Click 'Download sample' for the free sample file:

 Download sample

Make/Model Information:

  • Brand:   Hewlett-packard
  • Models included:
    • HP Color LaserJet 4500
    • HP Color LaserJet 4500 N
    • HP Color LaserJet 4500 DN
    • HP Color LaserJet 4550

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English
  • Number of pages:   1196
  • File size:  ∼ 30.39  MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   BMHP-1010

NOTE:  This list was created by program script and may not accurately represent the text from the source pages.   For full preview please click on 'Download sample':

 Download sample

hp color LaserJet
4550/4500 series
service
manual
achieve
Contents v
Contents
1 Printer description
Printer features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Site requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Printer specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Printer assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Media requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Environmental Product Stewardship Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Regulatory statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
2 Service approach
Service approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Parts and supplies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Warranty statement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
3 Installation and configuration
Unpack the printer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Connecting to a network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
Enhanced I/O (EIO) configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Printer drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
Network configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
Configuration tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Setting network security on the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
4 Printer maintenance
Cleaning the printer and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Approximate replacement intervals for consumable items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
Locating consumables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
Replacing consumable items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
DIMM configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98
5 Theory of operation
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
Basic operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103
Image formation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104
Toner density. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111
Mechanical system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112
Paper path. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122
DC controller subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132
Motors and fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133
Formatter system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135
Power supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135
6 Removal and replacement
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Consumable assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Covers, drawers, and top and front assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Right side assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Left side assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Rear assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Internal assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
7 Troubleshooting
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Troubleshooting process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Printer error troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Paper path troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Image formation troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
HP ColorSmart II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Matching colors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Four-color printing (CMYK). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Image defects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Overhead transparency defects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Repetitive defects troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Interface troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Control panel troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
Troubleshooting tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285
Service mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Diagnostics mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308
8 Parts and diagrams
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Ordering parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
Illustrations and parts lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329
Alphabetical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
Numerical parts list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
Contents vii
List of Figures
Figure 1-1 HP Color LaserJet 4500 family printers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Figure 1-2 HP Color LaserJet 4550 series printers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Figure 1-3 Model and Serial number information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Figure 1-4 Sample label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Figure 1-5 Space requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Figure 1-6 Front view, HP Color LaserJet 4500 and HP Color LaserJet 4550
(shown with 500-sheet paper feeder and duplex unit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Figure 1-7 Rear view, HP Color LaserJet 4500 (shown with 500-sheet paper feeder and duplex unit) . . . . .26
Figure 1-8 Rear view, HP Color LaserJet 4550 (shown with 500-sheet paper feeder and duplex unit) . . . . .27
Figure 3-1 Package contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Figure 3-2 Parallel cable with a “C” connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Figure 4-1 Imaging drum life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
Figure 4-2 OPC life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
Figure 4-3 Location of consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
Figure 4-4 Removing the formatter board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98
Figure 4-5 Do not remove the DIMM in slot #4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
Figure 4-6 Do not remove the DIMM in slot #3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
Figure 4-7 EDO and SDRAM memory modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
Figure 5-1 Basic system operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103
Figure 5-2 Image formation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104
Figure 5-3 Primary charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
Figure 5-4 Laser exposure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
Figure 5-5 Development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
Figure 5-6 Primary transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107
Figure 5-7 Secondary transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108
Figure 5-8 Separation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108
Figure 5-9 ITB residual toner cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109
Figure 5-10 Waste toner to waste toner reservoir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109
Figure 5-11 Fuser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110
Figure 5-12 Toner density sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111
Figure 5-13 Photosensitive drum cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112
Figure 5-14 Waste toner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113
Figure 5-15 Transfer unit function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113
Figure 5-16 Home position detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114
Figure 5-17 ITB unit life detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115
Figure 5-18 Secondary transfer roller unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116
Figure 5-19 ITB unit contact/separation unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117
Figure 5-20 Toner carousel assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118
Figure 5-21 Toner carousel operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119
Figure 5-22 Toner cartridge contact/separation function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119
Figure 5-23 Toner level detection/toner cartridge detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120
Figure 5-24 Laser/scanner operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121
Figure 5-25 Paper jam sensors (shown with the optional 500-sheet paper feeder and duplex
unit installed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122
Figure 5-26 Tray 2 (cassette) operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123
Figure 5-27 Tray 1 manual feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124
Figure 5-28 Laser paper detected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125
Figure 5-29 Overhead transparency sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125
Figure 5-30 Pick-up and feed system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126
Figure 5-31 Fusing and delivery unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127
Figure 5-32 Reversing and duplex pick-up operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128
Figure 5-33 Reversing operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129
Figure 5-34 Side registration adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Figure 5-35 Duplex feed roller pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Figure 5-36 DC controller PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Figure 5-37 Motors and fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Figure 6-1 Phillips and Posidriv screwdriver comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Figure 6-2 Top cover removal and replacement (rear view of printer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Figure 6-3 Left side cover removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Figure 6-4 Right side cover removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Figure 6-5 Rear door removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Figure 6-6 Right rear cover removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Figure 6-7 Drum drawer (top drawer) cover removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Figure 6-8 Drum drawer (top drawer) cover tabs and levers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Figure 6-9 ITB drawer (middle drawer) cover removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Figure 6-10 ITB drawer (middle drawer) removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Figure 6-11 Control panel removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Figure 6-12 Front right cover removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Figure 6-13 RFI shield removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Figure 6-14 Laser/scanner assembly removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Figure 6-15 DC controller removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Figure 6-16 Developing PCB removal and replacement (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Figure 6-17 Developing PCB removal and replacement (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Figure 6-18 Top cover switch assembly removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Figure 6-19 Top cover switch assembly removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Figure 6-20 Drum drawer (top drawer) switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Figure 6-21 Drum drawer (top drawer) assembly removal and replacement (1 of 3) . . . . . . . . . . . . . . . . . . 164
Figure 6-22 Drum drawer (top drawer) assembly removal and replacement (2 of 3) . . . . . . . . . . . . . . . . . . 165
Figure 6-23 Drum drawer assembly removal and replacement (3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Figure 6-24 Densitometer removal and replacement (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Figure 6-25 Densitometer removal and replacement (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Figure 6-26 Formatter removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Figure 6-27 Formatter pan assembly removal and replacement (1 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Figure 6-28 Formatter pan assembly removal and replacement (2 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Figure 6-29 Formatter pan assembly removal and replacement (3 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Figure 6-30 Formatter pan assembly removal and replacement (4 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Figure 6-31 Power supply removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Figure 6-32 High-voltage power supply removal and replacement (newer version
HP Color LaserJet 4500 and HP Color LaserJet 4550 printers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Figure 6-33 High-voltage power supply removal and replacement (older version
HP Color LaserJet 4500 printers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Figure 6-34 Drum drive assembly removal and replacement (1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Figure 6-35 Drum drive assembly removal and replacement (2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Figure 6-36 Drum drive assembly removal and replacement (3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Figure 6-37 Large fan removal and replacement (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Figure 6-38 Large fan removal and replacement (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Figure 6-39 Toner level sensor assembly removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Figure 6-40 Carousel drive assembly removal and replacement (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Figure 6-41 Carousel drive assembly removal and replacement (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Figure 6-42 Paper size switch removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Figure 6-43 Switch plate assembly removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Figure 6-44 Paper feed PCB removal and replacement (1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Figure 6-45 Paper feed PCB removal and replacement (2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Figure 6-46 Paper feed PCB removal and replacement (3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Figure 6-47 Fuser motor removal and replacement (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Figure 6-48 Fuser motor removal and replacement (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Figure 6-49 Paper path motor removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Figure 6-50 Paper pick solenoid removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Figure 6-51 ITB cleaning roller clutch removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Figure 6-52 ITB clutch assembly removal and replacement (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Figure 6-53 ITB clutch assembly removal and replacement (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Figure 6-54 Transfer roller cam clutch removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .192
Figure 6-55 Left side gears removal and replacement (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .194
Figure 6-56 Left side gears removal and replacement (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .194
Figure 6-57 Large right side fan removal and replacement (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .195
Figure 6-58 Large right side fan removal and replacement (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .196
Figure 6-59 Left side fan removal and replacement (1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .197
Figure 6-60 Left side fan removal and replacement (2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .198
Figure 6-61 Left side fan removal and replacement (3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .198
Figure 6-62 Rear paper path assembly removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .199
Figure 6-63 Cartridge carousel replacement - formatter pan assembly (1 of 6) . . . . . . . . . . . . . . . . . . . . . .200
Figure 6-64 Cartridge carousel replacement - continuous toner level sensor assembly (2 of 6) . . . . . . . . .201
Figure 6-65 Cartridge carousel replacement - carousel brake (3 of 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .201
Figure 6-66 Cartridge carousel replacement - face-down delivery rod (4 of 6) . . . . . . . . . . . . . . . . . . . . . . .202
Figure 6-67 Cartridge carousel replacement - right-side carousel mounting plate (5 of 6) . . . . . . . . . . . . . .202
Figure 6-68 Cartridge carousel replacement - lift out the cartridge carousel (6 of 6) . . . . . . . . . . . . . . . . . .203
Figure 6-69 Paper transport assembly removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .204
Figure 6-70 Paper pick rollers removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205
Figure 6-71 Star wheel assembly removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .206
Figure 6-72 Transfer roller removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .207
Figure 6-73 Cam shaft removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .208
Figure 7-1 Troubleshooting flowchart (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .214
Figure 7-2 Troubleshooting flowchart (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .215
Figure 7-3 Jam sensors (shown with the optional 500-sheet paper feeder and duplex unit installed) . . . . .237
Figure 7-4 Jam locations (shown with the optional 500-sheet paper feeder and duplex unit installed) . . . .238
Figure 7-5 Jam locations by error message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .239
Figure 7-6 Image formation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .243
Figure 7-7 Color balance calibration page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .251
Figure 7-8 Repetitive defect ruler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .266
Figure 7-9 Imaging drum exposed to light (proportions not to scale) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .267
Figure 7-10 HP EIO configuration page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .268
Figure 7-11 4500 series menu map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .271
Figure 7-12 4550 series menu map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .272
Figure 7-13 4500 series (left) and 4550 series (right) printer configuration page . . . . . . . . . . . . . . . . . . . . .287
Figure 7-14 Supplies status page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .290
Figure 7-15 Usage page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .291
Figure 7-16 Hard disk file directory page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .292
Figure 7-17 Service mode menu map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .293
Figure 7-18 HP Color LaserJet 4500 series Service menu map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .294
Figure 7-19 HP Color LaserJet 4550 series Service menu map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .295
Figure 7-20 Registration page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .298
Figure 7-21 Location of the engine test button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .306
Figure 7-22 Sensor locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .308
Figure 7-23 Printer solenoids and clutches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .309
Figure 7-24 Printer motors and fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310
Figure 7-25 Miscellaneous sensors and clutches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310
Figure 7-26 Intermediate transfer belt sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .311
Figure 7-27 Miscellaneous sensors (with tray 1 front cover removed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .312
Figure 7-28 PS6 and PS7 sensor location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .312
Figure 7-29 Miscellaneous switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .313
Figure 7-30 Miscellaneous switches and sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .313
Figure 7-31 PS14 sensor location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .314
Figure 7-32 Miscellaneous parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .314
Figure 7-33 Imaging drum connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .315
Figure 7-34 Rear door interlock switch defeat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .316
Figure 7-35 Right rear fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .316
Figure 7-36 Fuse (F1) and CB101 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .317
Figure 7-37 Fusing assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .317
Figure 7-38 DC controller PCB connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .318
Figure 7-39 Location of connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .319
Figure 7-40 Location of duplexer and 500-sheet paper feeder connectors . . . . . . . . . . . . . . . . . . . . . . . . . 320
Figure 7-41 500-sheet feeder wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321
Figure 8-1 Assembly location diagram (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
Figure 8-2 Assembly location diagram (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Figure 8-3 PCB locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332
Figure 8-4 External covers, panels, etc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Figure 8-5 Top cover assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Figure 8-6 Internal components (1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337
Figure 8-7 Internal components (2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Figure 8-8 Internal components (3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
Figure 8-9 Developing carousel assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
Figure 8-10 Paper pick-up assembly (1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344
Figure 8-11 Paper pick-up assembly (2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
Figure 8-12 Paper pick-up assembly (3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
Figure 8-13 Upper drawer assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350
Figure 8-14 MP tray paper pick-up assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351
Figure 8-15 250-sheet cassette . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
Figure 8-16 500-sheet paper feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
Figure 8-17 Duplex unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
Contents xi
List of Tables
Table 1-1 Printer features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Table 1-2 Model names and numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Table 1-3 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Table 1-4 Environmental specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Table 1-5 Consumable storage requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Table 1-6 Printer dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Table 1-7 Acoustic emissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Table 1-8 Supported media specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Table 1-9 Printing on transparencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Table 2-1 Related documentation and software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Table 3-1 Printer security levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74
Table 4-1 Cleaning the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Table 4-2 Approximate replacement interval for consumable items . . . . . . . . . . . . . . . . . . .83
Table 5-1 Toner carousel assembly components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118
Table 5-2 Motors, solenoids, sensors, and switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124
Table 5-3 Motors, solenoids, clutches, and sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124
Table 5-4 Solenoids, sensors, switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126
Table 5-5 Paper size detection switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127
Table 5-6 Fusing and delivery unit components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128
Table 5-7 Motors, solenoids, and sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129
Table 5-8 Motor and fan locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133
Table 6-1 Types of screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141
Table 6-2 Approximate replacement interval for consumable items . . . . . . . . . . . . . . . . . .142
Table 7-1 Pre-troubleshooting checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .213
Table 7-2 Alphabetical printer error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .217
Table 7-3 Numerical printer error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .226
Table 7-4 HP Color LaserJet 4500 jam locations and associated error messages . . . . . . .239
Table 7-5 HP Color LaserJet 4550 jam locations and associated error messages . . . . . . .240
Table 7-6 Explanation of alternating message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .240
Table 7-7 Image defect table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .253
Table 7-9 Defect spacing chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .267
Table 7-10 Communications check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .268
Table 7-11 HP Color LaserJet 4500 Information Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . .273
Table 7-12 HP Color LaserJet 4550 Information Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . .273
Table 7-13 HP Color LaserJet 4500 Paper Handling Menu . . . . . . . . . . . . . . . . . . . . . . . . .274
Table 7-14 HP Color LaserJet 4550 Paper Handling Menu . . . . . . . . . . . . . . . . . . . . . . . . .275
Table 7-15 HP Color LaserJet 4500 Configuration settings . . . . . . . . . . . . . . . . . . . . . . . . .276
Table 7-16 HP Color LaserJet 4550 Configuration settings . . . . . . . . . . . . . . . . . . . . . . . . .277
Table 7-17 HP Color LaserJet 4500 Printing Menu settings . . . . . . . . . . . . . . . . . . . . . . . .278
Table 7-18 HP Color LaserJet 4550 Printing Menu settings . . . . . . . . . . . . . . . . . . . . . . . .279
Table 7-19 HP Color LaserJet 4500 I/O Menu settings . . . . . . . . . . . . . . . . . . . . . . . . . . . .280
Table 7-20 HP Color LaserJet 4550 I/O Menu settings . . . . . . . . . . . . . . . . . . . . . . . . . . . .280
Table 7-21 HP Color LaserJet 4500 Calibration Menu settings . . . . . . . . . . . . . . . . . . . . . .281
Table 7-22 HP Color LaserJet 4550 Calibration Menu settings . . . . . . . . . . . . . . . . . . . . . .281
Table 7-23 HP Color LaserJet 4500 Resets Menu settings . . . . . . . . . . . . . . . . . . . . . . . . .282
Table 7-24 HP Color LaserJet 4550 Resets Menu settings . . . . . . . . . . . . . . . . . . . . . . . . .282
Table 7-25 HP Color LaserJet 4550 Quick Copy Jobs menu . . . . . . . . . . . . . . . . . . . . . . . .283
Table 7-26 HP Color LaserJet 4550 Private/Stored Jobs menu . . . . . . . . . . . . . . . . . . . . .284
Table 7-27 Formatter diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .300
Table 7-28 Engine diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .302
Table 7-29 Paper path sensors and switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .303
Table 7-30 Paper size settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .304
Table 7-31 Sensor status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Table 7-32 Sensor function and locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308
Table 7-33 Solenoid and clutch functions and locations . . . . . . . . . . . . . . . . . . . . . . . . . . . 309
Table 7-34 Printer motors and fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Table 7-35 Miscellaneous sensors and clutches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
Table 7-36 Intermediate transfer belt sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
Table 7-37 PS3 and PS4 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
Table 7-38 PS6 and PS7 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
Table 7-39 Switch description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313
Table 7-40 SW2, SW5, and PS13 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313
Table 7-41 Density sensor location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314
Table 7-42 Miscellaneous parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314
Table 7-43 Imaging drum connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
Table 7-44 Fuse F1 and CB101 location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 317
Table 7-45 110-volt fusing assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 317
Table 8-1 Consumables, accessories, and supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
Table 8-2 Types of screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328
Table 8-3 PCB assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
Table 8-4 Printer cover and door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Table 8-5 Top cover components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Table 8-6 Internal components (1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337
Table 8-7 Internal components (2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Table 8-8 Internal components (3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
Table 8-9 Developing carousel assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
Table 8-10 Paper pick-up assembly (1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
Table 8-11 Paper pick-up assembly (2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
Table 8-12 Paper pick-up assembly (3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
Table 8-13 Upper drawer assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350
Table 8-14 MP tray paper pick-up assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351
Table 8-15 250-sheet cassette . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
Table 8-16 500-sheet paper feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
Table 8-17 Duplex unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
Table 8-18 Alphabetical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
Table 8-19 Numerical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
C7085-90921 Index 365
Numerics
10/100Base-TX networks 66
10Base2 networks 65
10BaseT networks 66
AC bias 105
AC/DC power supply 135
access denied 73
accessories
cleaning 78
ordering 41, 325
acoustic emissions 23
Acrobat, Adobe 249
adding memory 98
adhesive labels
printing 32
supported sizes 29
adjusting colors
automatic 246
balance 250
Adobe Acrobat 249
Adobe Illustrator 249
Adobe InDesign 250
Adobe PageMaker 249
Adobe PhotoShop 247, 249
air filters
locating 84
replacing 91
alerts page 286
alphabetical lists
error messages 217
part numbers 355
altitude 22
ammonia-based cleaners, avoiding 78
applications
PANTONE support 249
sRGB support 247
ASCII escape sequence 75
assemblies
locating 25
remanufactured 42
removing 139
replacing 40
atmospheric pressure 23
automatic color adjustment 246
automatic PANTONE calibration 248
B connector 58
backgrounds, troubleshooting
gray 258
scatter 254
balance, adjusting
color 250
gray 252
banding, troubleshooting 254
base memory 16
base models 14
beam detect (BD) mirror 120
bidirectional parallel cable
connecting 59
pin configuration 60
specifications 58
troubleshooting 268
black lines, troubleshooting 255, 261
black pages, troubleshooting 255, 257
black toner cartridges
density setting 252
installing 51, 54
part numbers 327
replacement intervals 142
replacing 86
blade, cleaning 109
blank pages, troubleshooting 256
blurry images 257
BNC ports 65
board, formatter 98
brush, cleaning 85
C connector 26, 58
cabinet, ordering 326
cables
DIN-8 72
Ethernet 65
parallel 58
part numbers 325
ThinLan 65
calibration
PANTONE 248
toner cartridges 54
Calibration Menu 281
caliper, transparencies 31
diagrams 348
ITB 114
pick-up 124
removing 208
secondary transfer roller 115
capacity
circuit 22
input trays 29
output bins 17
cardstock
printing 32
supported sizes 29
carousel, toner
assembly diagrams 331
components 118
drive assembly, removing 179
housing assembly
removing 200
motor (M3) 118, 133
operations 118
position sensor (PS10) 118, 119
cartridge, photosensitive drum 112
cassette feed solenoid (SL2) 123, 188
cassette paper sensor (PS8) 123
CD, service part information 42
Central Processing Unit (CPU) 68
366 Index C7085-90921
characters, troubleshooting
dropouts 257
voids 257
wavy 262
charge
development 106
eliminator 108
laser exposure 106
primary 105
transfer 107
checklist, pre-troubleshooting 212
circuit
assemblies 40
breaker, diagram 317
capacity 22
cleaning
printer and accessories 78
toner density sensor 85
waste toner operation 109, 113
cleaning brush 85
cleaning roller clutch (CL3)
operations 114
removing 189
cleaning roller, operations 114
clearing
error messages 217, 282
event log 297
clothing, toner on 37
clutches
CL1 (registration) 123
CL2 (ITB unit contact/separation) 114, 116, 190
CL3 (ITB cleaning roller) 114, 189
CL4 (secondary transfer roller) 114, 115, 192
diagrams 309, 311, 314
removing 189
CMYK 248
coated media 30
collimator lens 120
automatic adjustment 246
balance, adjusting 250
calibration 54
Calibration Menu 281
CMYK 248
density test 243
halftone settings 245
HP ColorSmart II 246
map settings 246
missing 260
page count tracking 296
PANTONE matching 248
PostScript 250
settings 244, 246
software applications 249
sRGB 246
troubleshooting 257
variation 244
Color LaserJet 4500 family printer models 14
Color LaserJet Transparencies, ordering 326
color print speed 17
colored paper 31
ColorLaserJet Soft Gloss Paper 326
colorless output, troubleshooting 257
ColorSmart II 246
commands
DOS 269
PJL 269
Commercial Service and Support Organization-America (CSSO-A) 41
Commercial Service and Support Organization-Europe (CSSO-E) 41
communication, bidirectional
establishing 58
troubleshooting 268
compact disc, service part information 42
components
diagrams 337
replacing 40, 139
condensation 213
Configuration Menu 276
configuration page 287
configure printer page 286
configuring
network parameters 70
Novell NetWare 70, 71
Windows networks 71
connecting
10/100Base-TX network 66
10Base2 network 65
10BaseT network 66
LocalTalk networks 64
networks 64
parallel cable 59
power cord 50
connectors, diagrams 314, 318, 319
consumables
locating 84
ordering 41, 325
replacement intervals 83, 142
replacing 85
status information 290
storing 23
control panel
Calibration Menu 281
changing overlay 154
Configuration Menu 276
display language 61
EIO Menu 280
error messages 217
formatter PCB 135
I/O menu 280
Information Menu 273
locating 25
locking 73
menu map 271
Paper Handling Menu 274
Printing Menu 278
Private/Stored Jobs Menu 284
Quick Copy Jobs Menu 283
removing 153
Resets Menu 282
service mode 293
control panel overlays
installing 154
ordering 326
controller, DC
assembly diagrams 333
connectors 318
formatter PCB 135
operations 132
removing 158
replacing 297
Copy Jobs Menu, Quick 283
cord, power
connecting 50
unplugging 139
CorelDRAW 247, 249
C7085-90921 Index 367
count, page
color 296
consumables 142
definition 80
ITB 114
printing report 291
total 297
counter, ITB 114
country of origin, determining 18
covers, cleaning 78
covers, removing
diagrams 335
drum drawer 149
front right 155
ITB drawer 151
left side 145
middle drawer 151
protective scanner 139
right rear 148
right side 146
switch assembly, top 161
top 144
top drawer 149
cradle, formatter PCB 169
CSSO-A (Commercial Service and Support Organization-America) 41
CSSO-E (Commercial Service and Support Organization-Europe) 41
cutouts 30
cyan toner cartridges
adjusting density 251
installing 51, 54
part numbers 327
replacement intervals 142
replacing 86
cylindrical lens 120
Dainippon Press (DIC) 248
dark gray release button 51
Data Link Control (DLC) 72
DC bias 105
DC controller
assembly diagrams 333
connectors 318
formatter PCB 135
operations 132
removing 158
replacing 297
default settings
Configuration Menu 276
print jobs 278
restoring 282
defeat, rear door switch 316
defects, troubleshooting
images 253
repetitive 265
transparencies 263
delivery deflector solenoid (SL3102) 129
delivery paper sensor (PS7) 122, 127, 312
delivery rollers 127
Deneba Canvas 249
densitometer assembly, removing 166
density sensor, toner (PS14)
cleaning 85
operations 111
density, adjusting
color 250
print 243
depth, printer 23
Designer, Micrografx 249
DeskJet transparencies, avoiding 31
Detail option 245
detection port, toner cartridge 120
detection switches, paper size 123
developer
assembly diagrams 333
testing 303
developer sleeve 118, 119
developing carousel assembly 343
developing PCB, removing 159
development process 106
device page set 286
diagnostics
control panel 271
engine 302
formatter 300
mode, entering 300
using 40
diagrams, internal components 337
DIC (Dainippon Press) 248
dimensions, printer 23
adding 98
localized 325
ordering 326
supported 16
DIN-8 cable 72
DIN-8 port 64
diodes 111, 120
disconnecting power 139
display language, selecting 61
distorted images 257
DLC (Data Link Control) 72
documentation, ordering 43
diagrams 335
rear, removing 147
sensor test 304
switches 135
DOS commands 269
DRAM DIMMs
adding 98
supported 16
drawer assembly, upper 350
drawers, removing
drum assembly 112, 163
middle 152
switch assembly 182
top assembly 163
drive assemblies, removing
carousel 179
drum 176
drivers, printer
color output 244
ordering 43
settings 69
dropouts, troubleshooting 257
drum drawer
assembly, removing 163
cover, removing 149
locating 25
versions 335
drum drive assembly, removing 176
drum kits
life span 83
ordering 325
replacement intervals 142
drum motor (M4) 134
368 Index C7085-90921
drum test 303
imaging, installing 57
imaging, replacing 80, 88
life span 80
photosensitive 112
duplex feed motor (M3101) 129
duplex feed roller pressure release solenoid (SL3101) 129
duplex pick-up paper sensor (PS3104) 122, 129
duplex pick-up sensor (PS3103) 122, 130
duplex unit
assembly diagrams 354
connector diagrams 320
locating 25, 26
models with 15
ordering 326
supported media 30
duplexing
drum life 80
glossy paper, avoiding 30
paper path 128
pick-up operations 131
duty cycle, maximum 24
edges, detecting
leading 114
trailing 129
EDO DIMMs, not supported 16
EEPROMs 112
configuration 67
event log, printing 292
Menu 280
slots, locating 26
troubleshooting 268
electrical specifications 22
electrical surface resistivity 31
electrostatic discharge 139
eliminator, charge 108
e-mail page 286
embedded Web server 285
embossed media 30
emissions
acoustic 23
engine
diagnostics 302
testing 306
entering
diagnostics mode 300
service mode 293
envelopes
printing 32
supported sizes 29
environmental specifications 20, 22
environmental stewardship program 34
EPSF Charts 249
error logs, printing 292
error messages
alphabetical list 217
clearing 217, 282
jams 239
numerical list 226
ESD (electrostatic discharge) 139
ESD strap 140
Ethernet connections 65
Euro-standard CMYK 248
event log
clearing 297
printing 292
exchange program 42
exhaust fans 134
exiting diagnostic mode 300
exposure, laser 106, 120
Extended Data Output (EDO) DIMMs, not supported 16
face-down assembly, removing 199
face-down bin
delivering to 127
paper full sensor (PS9) 127, 224
face-up bin
delivering to 127
duplexing operations 129
faded print, troubleshooting 258, 259
diagrams 310, 316
large fan housing, removing 178
large right side, removing 195
left side, removing 197
locations 133
motor 134
Fast InfraRed Receiver (FIR) 68
features, printer 15
feed PCB, removing 183
feed rollers
cleaning 78
operations 122
feeding operations
cassette 123, 126
duplex unit 128
manual 124
paper path 122
filters
locating 84
replacing 91
Finnish laser safety statement 38
FIR (Fast InfraRed Receiver) 68
firmware
replacing 307
upgrading 98
flags 118, 119
flat-blade screwdrivers 140
flowchart, troubleshooting 213
adding 98
localized DIMMs, ordering 325
standard 15
formatter
assembly diagrams 333
board, removing 98
diagnostics 300
operations 135
pan assembly, removing 170
processor 68
removing 169
replacing 297, 307
four color printing 248
Fractal Design Painter 249
Freehand, Macromedia 249
front door switch 135
front right cover, removing 155
full-page ghosting 258
C7085-90921 Index 369
assembly diagrams 330
cleaning 78
locating 84
maintenance count 296
replacing 92
fuser kits
life span 83
ordering 325
replacement intervals 142
replacing 92
status report, printing 290
fuses 317
fusing
operations 110
temperature specifications 31
fusing assembly, diagram 317
fusing delivery rollers 127
fusing motor (M1)
operations 114, 127, 133
removing 185
fusing unit pressure release sensor (PS6) 127, 312
diagrams 346
removing 193
ghosting, full-page 258
glossy paper
duplexing, avoiding 30
HP Soft Gloss 326
printing 31
supported sizes 29
gray background, troubleshooting 258
gray balance 252
grayscale option 246
guides, ordering 43
halftone options 245
hard disk dependent menus 283
Hard disk file directory page 292
hard drives, included 14
heavy paper
printing 32
supported weights 29
height, printer 23
high-voltage power supply
operations 136
removing 174
home page set 286
home position detection sensor (PS5) 114, 223
home position sensor, side registration (PS3105) 130
horizontal lines, troubleshooting 254
housing, removing
carousel 200
large fan 178
HP Color LaserJet 4500 family printer models 14
HP Color LaserJet Soft Gloss Paper 326
HP Color LaserJet Transparencies 326
HP ColorSmart II 246
HP Distribution Center 43
HP JetAdmin software 67, 70
HP JetDirect print servers
connecting 10/100Base-TX 66
connecting 10Base2 65
connecting 10Base-T 66
installing 67
ports 64
supported configurations 71
HP LaserJet Family Print Media Guide 28
HP LaserJet Utility for Macintosh 70
HP LocalTalk Cable Kit 72
HP PCL 17
HP Support Assistant 42
HP Toner Cleaning Cloth 78
HP-UX 72
hubs, rollers 94
humidity
site requirements 20, 22
storing consumables 23
I/O Menu 280
I/O switching 58
IBM OS/2 LAN servers 72
ICC color profiles 249
identification page, device 286
Illustrator, Adobe 249
image formation system
operations 104
troubleshooting 243
images
aligning on page 114
defects, troubleshooting 253
definition 80
drum life 80
imaging drum
connector diagram 315
defects 265
installing 57
kits, status report 290
laser exposure 106, 120
life span 80
locating 84
primary charge 105
protecting 139
replacing 88
shipping 54
InDesign, Adobe 250
Information Menu 273
InfraRed Receiver, Fast (FIR) 68
initializing NVRAM 307
inkjet transparencies, avoiding 31
inks, specifications 33
input trays
capacity 29
locating 25
margins, setting 299
settings 274
supported media 29
installing
imaging drum 57
memory 98
software 59
toner cartridges, older versions 51
interfaces
parallel 58
settings 280
standard 17
troubleshooting 268
370 Index C7085-90921
internal assemblies
diagrams 337
removing 200
Internet Explorer, Microsoft 285
IP-based networks 285
IPX/SPX 71
IrDA-compliant 68
isolating problems 40
cleaning roller clutch (CL3) 114, 189
clutch assembly, removing 190
drawer cover, removing 151
home position detection sensor (PS5) 114, 223
lift cams 114
locating 25, 84
maintenance count 296
operations 113
paper path 122
replacing 90
secondary transfer roller 115
sensor diagrams 311
transfer operations 107
unit contact/separation clutch (CL2) 114, 116, 190
unit life sensor (PS1) 114
waste toner cleaning 109
jam sensors 122, 237
checklist 241
error messages 239
locations 238
log, printing 292
recovery, enabling 242
sensors 122, 237
JetAdmin software 67, 70
JetDirect print servers
connecting 10/100Base-TX 66
connecting 10Base2 65
connecting 10Base-T 66
installing 67
ports 64
supported configurations 71
jobs, print
monochrome, affect on drum life 81
settings 278
short 80
ordering 325
replacement intervals 142
replacing 89, 92
status report, printing 290
labels
printing 32
supported sizes 29
languages
changing control panel overlay 154
display 61
embedded Web server 286
localized DIMMs 325
printer job (PJL) 269
printer language support 17
universal exit (UEL) 269
laptop computers 68
large fan housing, removing 178
large right side fan, removing 195
image exposure 106
operations 120
laser safety statements
Finland 38
United States 37
laser/scanner assembly, removing 157
LaserJet 4500 family printer models 14
LaserJet Family Print Media Guide 28
LaserJet Soft Gloss Paper 326
LaserJet Transparencies, ordering 326
LaserJet Utility for Macintosh 70
last paper detection roller 125
last paper sensor (PS3) 124, 125, 312
leading edge, detecting 114
LEDs 111
left side assemblies, removing 182
left side cover, removing 145
left side fan, removing 197
left side gears, removing 193
lenses 120
letterhead, printing 33
level detection, toner 119
level location 49
levels, security 74
life span
consumables 83
imaging drum 80
ITB 114, 296
kits 142
photosensitive drum cartridge 112
status page, printing 290
toner cartridges 83, 142
lift cams 114
lifting printer 49
light print, troubleshooting 259
light, affects on color variation 244
light-emitting diodes (LEDs) 111
lines, troubleshooting
black 255
horizontal 254
vertical 261
white 261
localized font DIMMs 325
LocalTalk networks
configuring 68
connecting 64
HP Cable Kit 72
location requirements 20, 21
locking control panel settings 73
log, event
clearing 297
printing 292
low toner cartridges, detecting 120
machine screws 141
Macintosh
DIN-8 connection 72
FIR compliance 68
HP LaserJet Utility 70
Macromedia Freehand 249
C7085-90921 Index 371
magenta toner cartridges
density settings 251
installing 51, 54
part numbers 327
replacement intervals 142
replacing 86
maintenance counts 296
male connectors 58
management, color 246
manual color adjustment 246
manual feeding
operations 124
solenoid (SL1) 124
color 246
menu 271, 294
marbled output, troubleshooting 260
margins, setting 298
matching color
HP Color Smart II 246
PANTONE 248
variation 244
Material Data Safety Sheet (MSDS) 37
non-supported 30
ordering 326
selecting 28
sizes 29
special 31
specifications 241
storing 33
weights 29
memory
access location 26
adding 98
configuration report 288
duplex unit 15
localized font DIMMs 325
non-volatile (NVRAM) 100
NVRAM initialization 307
ordering 326
resetting 282
standard 16
supported 16
menu map, printing 271, 294
Calibration 281
Configuration 276
EIO 280
hard disk dependent 283
I/O 280
Information 273
locking 73
Paper Handling 274
Printing 278
Private/Stored Jobs 284
Quick Copy Jobs 283
Resets 282
Service 296
messages, error
alphabetical list 217
clearing 217, 282
jams 239
numerical list 226
Micrografx Designer 249
Microsoft Internet Explorer 285
Microsoft Office 247, 249
Microsoft Publisher 249
middle drawer cover, removing 151
middle drawer, removing 152
mirrors 120
misfeeds 241
missing colors 260
model numbers 18
models
drum drawers 335
HP LaserJet 4500 14, 140
diagnostics 300
service 293
monitors, affect on color 244, 247
monochrome print speed 17
motors
diagrams 310
fan 134
locations 133
M1 (fusing), operations 114, 127, 133
M1 (fusing), removing 185
M2 (pick-up), operations 122, 126, 133
M2 (pick-up), removing 187
M3 (carousel) 118, 133
M3101 (duplex feed) 129
M3102 (reversing) 129
M3103 (side registration) 129, 130
M4 (drum) 134
M5 (toner cartridge) 118, 134
removing 185, 187
mottled output, troubleshooting 260
moving printer 49
MS-DOS commands 269
MSDS (Material Data Safety Sheet) 37
multifeeds 241
multipart forms, avoiding 30
multipurpose tray sensor (PS4) 124, 312
Navigator, Netscape 285
NDS (Novell Directory Services) 71
needle-nose pliers 140
Netscape Navigator 285
networks
10/100Base-TX 66
10Base2 65
10BaseT 66
configuring parameters 70
connecting 64
EIO configuration 67
embedded Web server 285
IBM OS/2 LAN 72
LocalTalk 64
Novell NetWare 70
security 73, 74
troubleshooting 268
UNIX 72
Windows 71
noise, printer 23
non-volatile memory (NVRAM)
function 100
initializing 307
Novell Directory Services (NDS) 71
Novell NetWare, configuring 70, 71
numbers
model 18
part 355, 359
serial 18, 140, 296
numerical lists
error messages 226
part numbers 359
372 Index C7085-90921
NVRAM (non-volatile memory)
function 100
initializing 307
Office, Microsoft 247, 249
OHT sensor (PS301) 125
ordering
documentation 43
drivers 43
parts 41, 325
software 43
OS/2 servers, IBM 72
output bins
capacity 17
face-down 127
face-up 127
rear 26
top 25
overcurrent protection 136
overlays, control panel
installing 154
ordering 326
overvoltage protection 136
package contents 48
packing tape, removing 49
page count
color 296
consumables 142
definition 80
ITB 114
printing report 291
total 297
page sets, embedded Web server 285
PageMaker, Adobe 249
black, troubleshooting 255
blank 256
last, detecting 125
leading edges, detecting 114
per month maximum 24
trailing edges, detecting 129
white 256
palettes, PANTONE 249
pan assembly, formatter 170
PANTONE colors 248
non-supported 30
ordering 326
preprinted 33
recycled 33
selecting 28
Soft Gloss 326
specifications 241
supported sizes 29
paper feed PCB, removing 183
paper feed rollers
locating 84
replacing 94
paper feeder paper detection sensor (PS3001) 126
paper feeder paper-size detection switches (SW3001,3002,3003) 126
paper feeder pick-up solenoid (SL3001) 126
Paper Handling Menu 274
paper jams
checklist 241
error messages 239
locations 238
log, printing 292
recovery, enabling 242
sensors 122
paper path
duplex unit 128
jam checklist 241
operations 122
test 302
troubleshooting 237
paper pick rollers
cleaning 78
removing 205
paper pick-up assembly, diagrams 345
paper size
detection sensors 126
detection switches 123, 127, 313
Paper Handling Menu 274
paper size switch PCB, removing 181
paper sizes, supported 17, 29
paper transport assembly, removing 204
parallel cable
connecting 59
pin configuration 60
specifications 58
troubleshooting 268
parallel connector 26
parallel port 58
parameters, network 70
part numbers
alphabetical list 355
consumables 325
numerical list 359
compact disc information 42
ordering 41
replacing 139
passwords, setting 74
PCBs, removing
assembly diagrams 333
developing 159
formatter 169
paper feed 183
paper size switch 181
PCL support 17
perforations 30
Phillips screwdrivers 140
phone numbers
Commercial Service ans Support Organizations 41
HP Distribution Center 43
ordering parts 41
ordering supplies 325
photoconductive material 105, 106
photodiodes 111
photosensitive drum
cartridge 112
operations 116
PhotoShop, Adobe 247, 249
pick-up assembly, diagrams 345
pick-up motor (M2)
operations 122, 126, 133
removing 187
pick-up rollers
operations 124
removing 205
pin configuration, parallel cable 60
C7085-90921 Index 373
pins, memory 98
PJL (Printer Job Language)
commands 269
Technical Reference Manual 75
placement requirements 20, 21
plates, waste toner transfer 109
pliers 140
Plug and Play 59
LocalTalk 64
parallel 58
RJ-45 66
Posidrive screwdrivers 140
postcards
printing 32
supported sizes 29
PostScript
color matching 250
support 17
pouches, ESD 139
consumption 22
rating information 19
troubleshooting 216
power button 50
power cord
connecting 50
unplugging 139
power receptacle, locating 26
power supplies
AC/DC 135
duplex unit 128
high-voltage 136
removing 173
power switch (SW6)
locating 25
overcurrent protection 136
PowerSave
formatter PCB control 135
power consumption 22
settings 63
preprinted forms 33
presses, commercial 248
pressure release sensor, fusing unit (PS6) 127, 312
pressure release solenoid, duplex feed roller (S3101) 129
pressure, atmospheric 23
pre-troubleshooting checklist 212
primary charge roller 105
primary transfer 107
print in grayscale option 246
print jobs
monochrome, affect on drum life 81
settings 278
short 80
print media
guide 28
printer drivers
color output 244
ordering 43
settings 69
Printer Job Language (PJL)
commands 269
Technical Reference Manual 75
printer language support 17
printer status page 286
printing
configuration page 287
event log 292
menu map 271, 294
supplies status page 290
usage page 291
Printing Menu 278
prism mirror 120
Private/Stored Jobs Menu 284
processor 68
production number 18
Publisher, Microsoft 249
punched paper 30
quality, troubleshooting 253
Quark Xpress 249
Quick Copy Jobs Menu 283
quick-reference guides, ordering 43
Radio Frequency Interference (RFI) shield, removing 156
raised spots, troubleshooting 259
raster images 249
rear assemblies, removing 195
rear door
interlock switch defeat 316
locating 26
removing 147
switch 135
rear output bin
capacity 17
locating 26
recovery, jam 242
recycled paper 33
registration adjustment 130
registration clutch (CL1) 123
registration page 297
registration paper sensor (PS2) 122, 123, 131
registration roller
cleaning 78
operations 123
regulatory information
power rating 19
release button
dark gray 51
top cover 25
remanufactured assemblies 42
removing
packing tape 49
parts, important notices 139
sealing tape 52
repair notices 139
repetitive defects
causes 265
ruler 266
transparencies 263
replacement intervals
consumables 83
imaging drum 80
ITB 114, 296
kits 142
photosensitive drum 112
status page, printing 290
toner cartridges 83, 142
374 Index C7085-90921
replacing
air filters 91
consumables 83, 85
fuser 92
fuser kit 92
gears 193
imaging drum 88
paper rollers 94
parts 139
toner cartridges 86
transfer kits 89
reservoir, waste toner 109
Resets Menu 282
resetting printer 97
retaining ring screws 141
reversed paper sensor (PS3101) 122, 129
reversing motor (M3102) 129
reversing operations, duplex unit 129
RFI (Radio Frequency Interference) shield, removing 156
RGB, Standard (sRGB) 246
right rear cover, removing 148
right rear fan, diagram 316
right side assemblies, removing 168
right side cover, removing 146
right side fan, removing 195
RISC processor 68
RJ-45 ports 66
rollers
cleaning methods 78
cleaning roller 114
feed 122
fusing delivery 127
last paper detection 125
pick-up 124
primary charge 105
primary transfer 107
registration 123
removing 205, 207
replacing 89, 94
secondary transfer 107, 115
transfer 114
ruler, repetitive defects 266
safety information 37
scanner
assembly, removing 157
operations 120
protective cover 139
scatter, background 254
Screen Match 246
screwdrivers 140
screws, types of 141
SDRAM DIMMs
adding 98
supported 16
sealing tape, removing 52
secondary transfer process 107
secondary transfer roller
operations 115
paper path 122
secondary transfer roller clutch (CL4)
operations 114, 115
removing 192
security page 286
security, network 73, 74
selecting media 28
self tapping screws 141
sensors
diagrams 308, 311, 314
paper jam 122, 237
PS1 (ITB unit life) 114
PS10 (carousel position) 118, 119
PS11 (toner cartridge contact/separation) 118, 119
PS12 (toner level) 118, 119
PS13 (waste toner) 113, 313
PS14 (toner density) 85, 111
PS2 (registration paper) 122, 123, 131
PS3 (last paper) 124, 125, 312
PS3001 (paper feeder paper detection) 126
PS301 (overhead transparency) 125
PS3101 (reversed paper) 122, 129
PS3103 (duplex pick-up) 122, 130
PS3104 (duplex pick-up paper) 122, 129
PS3105 (side registration home position) 130
PS4 (multipurpose tray) 124, 312
PS5 (home position detection) 114, 223
PS6 (fusing unit pressure release) 127, 312
PS7 (delivery paper) 122, 127, 312
PS8 (cassette paper) 123
PS9 (face-down bin paper full) 127, 224
testing 303, 304
separation pad
cleaning 78
operations 124
separation process 108
separation rollers
cleaning 78
locating 84
serial numbers
locating 18, 140
setting 296
server, embedded Web 285
service approach 40
service mode 293
settings
color 244, 246
color balance 250
Configuration Menu 276
halftone 245
interface 280
locking 73
margins 298
network security 74
paper trays 274
PowerSave 63
print jobs 278
printer drivers 69
registration values 297
restoring defaults 282
shafts, removing
cam 208
roller 205
sharkskin, troubleshooting 260
sharpness, settings 245
sheet-metal parts, handling 139
shipping printer 54
shutting down printer 139
side registration adjustment 130
side registration home position sensor (PS3105) 130
side registration motor (M3103) 129, 130
Simple Network Management Protocol (SNMP) 67
site requirements 20, 21
skewed images 257
memory 16, 98
C7085-90921 Index 375
smart color 246
smeared toner 261
Smooth option 245
SNMP (Simple Network Management Protocol 67
Soft Gloss paper 326
software
installing 59
JetAdmin 67, 70
ordering 43
PANTONE applications 249
sRGB applications 247
Solaris 72
solenoids
diagrams 309, 314
removing 188
SL1 (manual feed) 124
SL2 (cassette feed) 123, 188
SL3001 (paper feeder pick-up) 126
SL3101 (duplex feed roller pressure release) 129
SL3102 (delivery deflector) 129
sound intensity level 24
space requirements 21
spacing chart, defects 266
special media, printing 31
specifications
electrical 22
environmental 22
media 29
preprinted paper 30
printer 23
site requirements 20
space requirements 21
speed, printing 17
spilled toner
cleaning 78
washing off clothing 37
spots, troubleshooting 259, 260
Standard RGB (sRGB) 246
Standard Web Offset Press (SWOP) 248
standby button 25, 50
standby mode
acoustic emissions 23
button for 50
power consumption 22
star wheel assembly, removing 206
static discharge 139
status pages
printer 286
supplies 290
stirrer, toner 120
stop position flags 118, 119
stored jobs menu 284
storing
consumables 23
media 33
printer 22
strap, ESD 140
streaks, troubleshooting
faded 258
transparencies 264
vertical 261
subassemblies 40
sunburn, troubleshooting 260
SunOS 72
supplies
ordering 325
status page, printing 290
Support Assistant, HP 42
surface resistivity, electrical 31
swatches, sRGB 249
sweeper strip 109
switch assembly, removing 161
switch boxes 268
switches
diagrams 313, 314
drawer assembly, removing 182
front door 135
paper size PCB, removing 181
rear door 135
rear door interlock defeat 316
SW3001,3002,3003 (paper feeder paper-size detection) 126
SW6 (power) 25, 136
SW801,802,803 (paper size detection) 123, 127, 313
SWOP (Standard Web Offset Press) 248
system requirements, Fast InfraRed Receiver (FIR) 68
T connectors 65
tape, removing
packing 49
sealing 52
TCP/IP 71
technical reference guides 43
temperature
ink requirements 30
maximum change rate 23
site requirements 20, 22
storing consumables 23
testing
developer 303
diagnostics mode, entering 300
door sensors 304
drum 303
engine 306
paper path 302
paper path sensors 303
printer operation 62
text, troubleshooting 257, 262
theory of operations
clutches 114
duplex unit 128
fusing 110
image formation system 104
ITB 113
laser/scanner 120
paper path 122
secondary transfer roller 115
toner carousel 118
waste toner cleaning 109, 113
ThinLan cables 65
TIFF files 249
cleaning spilled 78
development process 106
fusing operations 110
smeared 261
stray, troubleshooting 259
washing off clothing 37
waste, cleaning 109, 113
toner cartridges
access cover 25
contact/separation sensor (PS11) 118, 119
installing older versions 51
level detection 120
life span 83
locating 84
motor (M5) 118, 134
part numbers 327
376 Index C7085-90921
replacement intervals 142
replacing 86
safety data sheet 37
shipping 54
status report, printing 290
transfer operations 107
Toner Cleaning Cloth, HP 78
toner density sensor (PS14)
cleaning 85
operations 111
toner level sensor (PS12) 118, 119
tools, required 140
top cover
release button 25
removing 144
switch assembly, removing 161
top drawer assembly, removing 163
top drawer cover, removing 149
top output bin
capacity 17
locating 25
top-of-page signal 114
total page count 297
tracking
color page count 296
fuser maintenance 296
page count 297
transfer maintenance 296
trailing edge, detecting 129
transfer kits
life span 83
ordering 325
replacement intervals 142
replacing 89
status report, printing 290
transfer maintenance count 296
transfer operations 107
transfer plates, waste toner 109
transfer roller
cleaning 78
locating 84
operations 114
removing 207
replacing 89
transparencies
defects, troubleshooting 263
detection sensor (PS301) 125
HP-supported 30
ordering 326
print speed 17
printing 31
supported sizes 29
transport assembly, removing 204
Tray 1
assembly diagrams 351
capacity 29
feeding operations 124
locating 25
margins, setting 299
sensor (PS4) 124, 312
settings 274
special media handling 32
supported media 29
Tray 2
assembly diagrams 352
capacity 29
cassette feed solenoid (SL2) 123, 188
feeding operations 123
locating 25
margins, setting 299
paper size switches 123
replacing paper rollers 94
sensors 123
settings 274
supported media 29
Tray 3
assembly diagrams 353
capacity 30
connector diagrams 320
feeding operations 126
locating 25
margins, setting 299
ordering 326
paper size switches 126
replacing paper rollers 96
settings 274
supported media 30
wiring diagram 321
trays, input
capacity 29
locating 25
margins, setting 299
settings 274
supported media 29
troubleshooting
checklist 212
color 243
communications 268
configuration page, printing 287
control panel 271
diagnostics mode 300
event log, printing 292
flowchart 213
image defects 253
image formation system 243
paper path 237
power 216
quality 253
supplies status page, printing 290
transparencies 263
usage page, printing 291
trus head screws 141
turning off printer 139
UEL (universal exit language) 269
unit life sensor, ITB (PS1) 114
universal exit language (UEL) 269
UNIX networks 72
unpacking 48, 49
unplugging power cord 139
upgrading firmware 98
upper drawer assembly 350
usage page, printing 291
user guides, ordering 43
vacuuming 78
values, registration 297
variation, color 244
vector graphics 249
ventilation 20
versions
drum drawers 335
printers 140
vertical banding, troubleshooting 255
vertical lines, troubleshooting 261
Vivid color map 246
C7085-90921 Index 377
voids, character 257
voltage
AC/DC power supply 135
duplex unit 128
exposed 213
high-voltage power supply 136
operating 19
overvoltage protection 136
paper feeder 126
part numbers 324
power consumption 22
primary charge 105
Warp servers 72
warranty statement 44
waste toner
cleaning operation 109, 113
sensor (PS13) 113, 313
wavy characters, troubleshooting 262
Web server, embedded 285
websites
HP JetAdmin software 70
Material Data Safety Sheet (MSDS) 37
PANTONE palettes 249
product and support information 42
service part information 42
specifications 22
weight
media 29
printer 20, 23
wheel assembly, removing 206
white lines, troubleshooting 261
white pages, troubleshooting 256
width, printer 23
Windows
FIR compliance 68
network configurations 71
wiring diagrams 321
Word, Microsoft 249
Xpress, Quark 249
yellow toner cartridges
density settings 251
installing 51, 54
part numbers 327
replacement intervals 142
replacing 86
Service Manual October 1999 Edition
Hewlett-Packard Co.
Printed in USA
Manual Part No.
C4084-91077
HP Color LaserJet 4500, 4500 N, 4500 DN Printer Service Manual
4500, 4500 N, 4500 DN Printer
*C4084-91077*
*C4084-91077*
C4084-91077
Printed on at least
50% Total Recycled Fiber with
at least 10% Post-Consumer Paper
Service Manual
4500, 4500 N, 4500 DN Printer


Payment

Before sending payment please download the sample file to verify the following:

  •   Check the Brand, Model and Year.
  •   Review the Table of Contents (TOC).
  •   Review the Bookmarks.
  •   Inspect the quality of images.

7.00USD

Paypal
Credit card*
Debit card**

*Credit card or Debit card processing at Paypal portal.
**Debit card: available only from selected countries/territories.