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Make/Model Information:

  • Brand:   Hewlett-packard
  • Models included:
    • HP LaserJet 1100A

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English
  • Number of pages:   217
  • File size:  ∼ 3.73  MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   BMHP-1048

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Hewlett-Packard Co.
Printed in USA
Manual Part No.
C4224-90962
*C4224-90962*
*C4224-90962*
C4224-90962
HP LaserJet 1100A Service Manual
Printed on at least
50% Total Recycled Fiber with
at least 10% Post-Consumer Paper
LaserJet 1100A HP
Service
HP LaserJet 1100A
Service Manual ______________
C4224-90962 5
Contents
1 Printer Specifications
Printer description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Hardware description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Firmware description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
FCC compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Environmental Product Stewardship Program . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Protecting the Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Material safety data sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Additional product stewardship . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Environmental conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Regulatory statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Laser safety statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Canadian DOC regulations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Korean EMI statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Laser statement for Finland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2 Product Operation
HP LaserJet 1100 Printer control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Printer key functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Scanner control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Printer paper handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Toner cartridge information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Warranty statement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
3 Functional Overview
Basic functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Printer functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Engine Control Unit (ECU)/power system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Printer engine control system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Power system on ECU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Formatter system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Control panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Draft mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Memory Enhancement technology (MEt) . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Enhanced I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Page Protect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
PJL Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Image formation system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Toner cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Printer paper feed system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Paper jam detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Solenoid, photosensors, and switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Document scanner system (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Basic sequence of operation (formatter to printer) . . . . . . . . . . . . . . . . . . . . . . . 58
6 C4224-90962
4 Removal and Replacement
Removal and replacement strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Required tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
External assemblies and covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Paper guides removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Document scanner removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Document scanner opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Contact image sensor removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Printer door removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Pod removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Back cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Internal paper guide removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Front cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Stabilizer bars removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Printer laser/scanner cover removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Internal assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Scanner assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Output roller removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Delivery assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Paper exit sensor flag removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Fusing element removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Fusing element removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Gear train motor and solenoid removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Solenoid removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Pressure roller removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Transfer roller removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Pickup roller removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Paper pick-up assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Kick plate removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Separation pad removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Bottom assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Formatter pan removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Document scanner cable removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Hinge mechanism removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
ECU pan removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Paper feed assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
C4224-90962 7
5 Troubleshooting/Maintenance
Basic troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Fatal errors/accessory errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Image formation troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Checking the toner cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Solving image quality problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Solving paper feed problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Cleaning procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Cleaning the toner cartridge area. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Cleaning the printer paper path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Cleaning the pickup roller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Cleaning the scanner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Functional checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Engine test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Self test page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Half-self test functional check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Drum rotation functional check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Heating element check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
High-voltage power supply check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Paper curl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Paper path check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
ServiceMode functions (PJL Software Commands) . . . . . . . . . . . . . . . . . . . . . 149
Troubleshooting tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Printer paper path. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Document paper path. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Repetitive image defect ruler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Main wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
6 Parts and diagrams
How to use the parts lists and diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Parts and supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Consumables and accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Ordering consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Common hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
External covers and panels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Document scanner parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Internal components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Feeder assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Engine controller assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Formatter pan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Parts list sorted by part number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Parts list sorted by part name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
8 C4224-90962
C4224-90962 Chapter contents 9
1 Printer Specifications
Chapter contents
Printer description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Hardware description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Firmware description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
FCC compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Environmental Product Stewardship Program . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Material safety data sheet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Regulatory statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
C4224-90962 Hardware description 11
Hardware description
The HP LaserJet 1100 Printer engine prints eight pages per minute. The HP LaserJet 1100
Printer has a compact design with vertical paper trays.
There is one main Paper Input Bin with a 125-sheet capacity for continuous, multiple-page
printing. Manual, single-sheet printing is possible through the Single Sheet Input Slot. Both
trays are center justified for all supported paper sizes. The output tray holds up to 100
sheets.
The HP LaserJet 1100 Printer has a very fast first-page-out, at less than twenty seconds. It
has a Control Panel containing two LEDs. A third LED is located on the Go Key. The
formatter board contains 4 MB of ROM, 2 MB of RAM, and a 32-bit MCF5202 chip. There is
one slot available for DIMM Memory Expansion (supporting a 4 MB, 8 MB, or 16 MB DIMM).
The HP LaserJet 1100 Printer engine has a 7,000 pager-per-month duty cycle and has no
fan. The toner life for the HP LaserJet 1100 Printer is 2,500 pages. The attachable scanner
has two Control Panel buttons and up to 20-page ADF.
Figure 1-1 Control panel
C4224-90962 Chapter contents 119
5 Troubleshooting/
Maintenance
Chapter contents
Basic troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Fatal errors/accessory errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Image formation troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Solving image quality problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Cleaning procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Functional checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
ServiceMode functions (PJL Software Commands) . . . . . . . . . . . . . . . . . . . . . 149
Troubleshooting tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
C4224-90962 Chapter contents 157
6 Parts and diagrams
Chapter contents
How to use the parts lists and diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Parts and supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Consumables and accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
C4224-90962 External covers and panels 163
External covers and panels
Figure 6-1 External covers, panels, etc.
Table 6-2. External covers, panels, ets.
KEY # PART # QTY DESCRIPTION
1 RF5-2827-000CN 1 COVER, FRONT
2 RF5-2828-000CN 1 COVER, REAR
2A RB2-4014-000CN 1 MEMORY DOOR
3 RB2-4018-000CN 1 POD, LEFT
4 RB2-4019-000CN 1 POD, RIGHT
5 RB2-4020-000CN 1 INPUT PAPER SUPPORT
6 RB2-4021-000CN 1 OUTPUT/SCANNER PAPER SUPPORT
7 RG5-4601-000CN 1 SINGLE SHEET BIN
8 RG5-4602-000CN 1 INPUT PAPER BIN
9 RG5-4604-000CN 1 PRINTER DOOR
501 XB2-7300-607CN 1 SCREW, M3X6
502 XB4-7401-007CN 4 SCREW, M4X10
RZ4-0690-000CN 2 SHIPPING BLOCK
C4224-90962 187
AC power distribution 46
accessories and consumables
ordering 161
adjusting registration 140
assemblies
fusing 53
high-voltage connector 147
assembly diagrams 158
bidirectional
ECP interface 48
dots on pages 127
dots on scanned images 132
pages 130
streaks on page 128
areas on page 130
bottom of page or graphic 131
pages 131
bottom of page or graphic cut off 131
cartridge sensor (SW101) 55
characters partially printed 131
charging the drum 52
checking registration 140
checks
drum rotation 143
half-self test 142
188 C4224-90962
high-voltage power supply 146
circuit
driver 56
circuitry
high-voltage 47
power 46
cleaning
photosensitive drum process 51
printer 137
printer paper path 137
toner cartridge connection points 146
components, internal
illustrations 165, 168, 172, 174, 176
connection points for toner cartridge 146
conserving toner 49
consumables and accessories
ordering 161
contact image sensor 56
control panel
description 49
control, paper motion 45
crooked pages 134
curled
pages 134
paper 147
customer support
ordering parts 159
Support Materials Europe (SME) 159
Support Materials Organization (SMO) 159
faxes 126
scanned images 126
date/time
C4224-90962 189
toner cartridge expiration 125
DC power distribution 46
delivery roller
motion 147
developing process 52
diagrams
assembly 158
timing 59
distribution of power 46
document sensor (PS801) 55
documents
fall out of feeder tray 136
door open sensor (SW101) 55
on pages 127
on scanned images 132
draft mode 49
DRAM (dynamic random-access memory) 48
driver
circuits 56
roller motion 147
dropouts in characters 131
drum rotation functional check 143
drum, photosensitive
charging 52
cleaning process 51
troubleshooting 125
dynamic random-access memory (DRAM) 48
ECP interface 48
ECU (engine controller unit)
description 44
loads 44
edge of paper, not printing to 126
190 C4224-90962
electrophotographic process 142
engine control function 43
engine test 140
engine test switch (SW201) 55
error messages
printer
light patterns 11, 26
ESD (electrostatic discharge)
caution 62
mat 63
exit rollers 53
expiration date of toner cartridges 125
faded print 127
fasteners, common 162
light or dark 126
feed assembly drive rollers 53
feed functions 43
feeding problems 135, 136
fixing
process 52
formatter 48
functional checks
drum rotation 143
gear motion 147
roller motion 147
fuses 46
fusing
assembly 53
element 52
graphic, bottom cut off 131
C4224-90962 191
half-self test 142
hardware
common 162
high-voltage
connector assembly 147
power distribution 46
power supply check 146
image fixing process 52
image formation
function 43
system 51
troubleshooting 125
images
lines on page 128
too light or dark 126
installing self-tapping screws 62
kick plate
motion 53, 147
LED (light-emitting diode) array 56
faxes 126
printing 127
scanned images 126
light patterns
printer 11, 26
light-emitting diode (LED) array 56
on scanned images 128
192 C4224-90962
memory
DRAM (dynamic random-access memory) 48
RAM (random-access memory) 48
misaligned print 132
missing bottom of page or graphic 131
mode, draft 49
monitoring paper motion 45
motion control 45
description 45
rotation 147
multiple pages feeding 135, 136
optical system 56
ordering
accessories and consumables 161
overcurrent 46
overview of processes 42
overvoltage 46
separation 53
sub 53
engine test 140
blank print 131
bottom cut off 131
completely black 130
crooked 134
curled or wrinkled 134
long stop feeding 134
multiple feeding 135, 136
C4224-90962 193
skewed 132, 134
curl 147
feed problems 134
motion 53
not being picked up 147
not moving through path 147
not printing to edge 126
paper exit sensor (PS201) 53, 54, 55
paper jams 135, 136
paper motion control 45
paper out sensor (PS202) 54, 55
paper path
check 147
paper registration sensor (PS203) 53, 54, 55
partially printed characters 131
lists 158
scanner 56
path, paper
check 147
photosensitive drum
charging 52
cleaning process 51
troubleshooting 125
phototransistor array 56
pickup roller assembly
motion 147
pickup/feed functions 43
plates
kick 53, 147
pliers required for servicing 63
194 C4224-90962
AC distribution 46
DC distribution 46
high-voltage distribution 46
shutoff switch 45
supply check 146
system description 44, 46
primary charging 52
misaligned 134
skewed 134
print engine control system 45
printer
functions 43
isolating problems 140
laser/scanner functions 43
light patterns 11, 26
specifications 13 14
printing
engine test page 140
faded 127
misaligned 132
to edge of paper 126
won’t print 126
product
block diagram 43
overview of processes 42
protection, overcurrent 46
RAM (random-access memory) 48
random-access memory (RAM) 48
recycling toner cartridges 38
registration checking and adjusting 140
rod lens array 56
rollers
C4224-90962 195
exit 53
feed assembly drive 53
motion 147
rotation, drum 143
process 142
scanned images
lines on page 128
too light or dark 126
scanned text unclear 133
scanner
path 56
system 56
scattered toner on page 130
screwdrivers required for servicing 63
screws
common 162
installing 62
self-tapping 62
self-tapping screws, installing 62
sensors
contact image 56
document 55
door open 55
location and function 55
paper exit 55
paper exit (PS201) 53, 54
paper out (PS202) 54, 55
paper registration (PS203) 53, 54, 55
toner cartridge 55
separating process 52
separation pads
description 53
196 C4224-90962
service and support
ordering parts 159
Support Materials Europe (SME) 159
Support Materials Organization (SMO) 159
shutoff switch 45
skewed
pages 134
print 132
smears on page 128
smudges on page 127
solenoid 55
solenoid assembly 147
specifications
printer 13 14
stains on page 127
streaks
on pages 128
on scanned images 132
stripes on page, white 127
subassembly diagrams 158
subpads
description 53
summary of processes 42
support and service
ordering parts 159
Support Materials Europe (SME) 159
switches
engine test (SW201) 55
location and function 55
power shutoff 45
engine switch (SW201) 55
page for engine 140
C4224-90962 197
engine 140
half-self 142
text, scanned, unclear 133
timing diagram 59
draft mode for conserving 49
scattered on page 130
toner cartridge 38
recycling 38
refilled 38
toner cartridges
checking 125
checking and cleaning connection points 146
description 51
expiration date 125
photosensitive drum 125
sensor 55
weight when full and empty 125
servicing 63
troubleshooting 147
transfer process 142
transfer roller
motion 147
documents fall out 136
troubleshooting
drum rotation 143
image formation 125
paper feed problems 134
printer
light patterns 11, 26
process malfunctions 142
198 C4224-90962
tools 147
video controller 56
void areas on page 130
voltage
distribution 46
high 46
over 46
power supply check 146
protection 46
warranty statement 39
weight
toner cartridge when full and empty 125
areas on page 130
stripes on page 127
wrinkled pages 134
Hewlett-Packard Co.
Printed in USA
Manual Part No.
C4224-90962
*C4224-90962*
*C4224-90962*
C4224-90962
HP LaserJet 1100A Service Manual
Printed on at least
50% Total Recycled Fiber with
at least 10% Post-Consumer Paper
LaserJet 1100A HP
Service


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