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Make/Model Information:

  • Brand:   Hewlett-packard
  • Models included:
    • HP Color LaserJet 4600
    • HP Color LaserJet 4610
    • HP Color LaserJet 4650

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English (EN)
  • Number of pages:   948
  • File size:  ∼ 27.80  MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   BMHP-1075

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service
hp color LaserJet
4600/4610n/4650
HP Color LaserJet 4600 Series printer
Service Manual
Table of contents
1 Product information
Model configurations
HP Color LaserJet 4600 Series printer
Printer features
Printer features
Printer assemblies
HP Color LaserJet 4600 models
HP Color LaserJet 4610n printer
HP Color LaserJet 4650 models
Identification, site requirements, and specifications
Model and serial numbers
Power and regulatory label
Site requirements
Space requirements
Physical specifications
Electrical specifications
Environmental specifications
Acoustic emissions
Supply storage requirements
Print media
Print-media specifications
Media to avoid
Media that can cause damage to the printer
Printing on special media
Transparencies
Glossy paper
Colored paper
Printing images
Envelopes
Heavy paper
HP LaserJet Tough paper
Preprinted forms and letterhead
Recycled paper
Weight equivalence table
Environmental product stewardship program
Protecting the environment
Ozone production
Power consumption
Paper use
ENWW iii
Plastics
HP LaserJet printing supplies
HP Printing Supplies Returns and Recycling Program Information
Recycled paper
Material restrictions
For more information
Hewlett-Packard limited warranty statement
Declaration of conformity
Country/region laser safety statements
Canadian DOC regulations
EMI statement (Korea)
VCCI statement (Japan)
Laser Statement for Finland
Japan power-cord statement
2 Service approach
Service approach
Parts and supplies
Ordering parts, supplies, and accessories over the Internet
Ordering directly through the embedded Web server (for printers with network
connections)
Ordering directly through the HP Toolbox software (HP CLJ 4650 only)
Exchange program
Supplies
World Wide Web
HP Service Parts Information
HP customer care
Online services
Telephone support
Software utilities, drivers, and electronic information
HP service information
HP service agreements
HP support and information for Macintosh computers
Ordering related documentation and software
3 Installation and configuration
Unpacking the printer
Installing the media tray
Connecting power
Installing the print cartridges
Installing a new overlay (HP Color LaserJet 4600 models)
Installing a new control-panel label (HP Color LaserJet 4650 models)
Testing the printer operation
Using PowerSave
To set PowerSave Time
To turn PowerSave on or off
Connecting to a computer
Parallel connections
USB configuration (HP Color LaserJet 4610n and 4650 models)
Auxiliary connection configuration (HP Color LaserJet 4650 models)
iv ENWW
Network connections
Direct to network (HP Color LaserJet 4600 and 4650 models)
Network print server (HP Color LaserJet 4600 and 4650 models)
Network print server (HP Color LaserJet 4610n printer)
Peer-to-peer (direct to network, HP Color LaserJet 4600 and 4650 models)
Peer-to-peer (parallel)
Enhanced I/O (EIO) configuration
HP Jetdirect print servers
Available enhanced I/O interfaces
NetWare networks
Windows and Windows NT networks
AppleTalk networks
LocalTalk configuration
LocalTalk network configuration
UNIX and Linux networks
Wireless printing
IEEE 802.11b standard
Bluetooth
Printer drivers
Available drivers
Additional drivers
Select the right printer driver for your needs
Printer driver Help
Software for Macintosh computers
HP LaserJet Utility
Installing the printing system software
Installing Windows printing system software for direct connections
Installing Windows printing system software for networks
To set up Windows-sharing to use the printer on a network
Installing Macintosh printing system software for networks
Installing Macintosh printing system software for direct connections (USB, HP Color
LaserJet 4610n and 4650 models only)
Installing the software after the parallel or USB cable has been connected
Network configuration
Configuring the printer for the network
Configuring Novell NetWare frame type parameters
Software for networks
HP Web Jetadmin
Utilities
Embedded Web server (HP Color LaserJet 4600 and 4650 models only)
Features
HP Toolbox (HP Color LaserJet 4650 models only)
Other components and utilities
Setting network security on the printer
Locking the control panel
Levels of security
Using an ASCII PJL escape sequence to set network security
4 Maintenance
Cleaning the printer and accessories
Cleaning spilled toner
Vacuum specifications
Approximate replacement intervals for supply items
ETB life under different circumstances
Locating supplies
Replacing supply items
Changing print cartridges
Replacing the transfer unit
Replacing the transfer unit when it is not at end of life
Replacing the fuser
Replacing the fuser when it is not at end of life
Printer memory (HP Color LaserJet 4600 models)
Installing memory and font DIMMs (HP Color LaserJet 4600 models)
Enabling memory (HP Color LaserJet 4600 models)
Enabling the language font DIMM (HP Color LaserJet 4600 models)
Checking DIMM installation (HP Color LaserJet 4600 models)
Printer memory (HP Color LaserJet 4610n and 4650 models)
Installing memory (HP Color LaserJet 4610n and 4650 models) and fonts (HP Color
LaserJet 4650 models)
To install DDR memory DIMMs (HP Color LaserJet 4610n and 4650
models)
To install a flash memory card (HP Color LaserJet 4610n and 4650
models)
Enabling memory (HP Color LaserJet 4610n and 4650 models)
To enable memory for Windows 98, ME, and NT (HP Color
LaserJet 4650 models)
To enable memory for Windows 2000 and XP (HP Color
LaserJet 4610n and 4650 models)
Installing an HP Jetdirect print server card (HP Color LaserJet 4600 and 4650 models only)
Installing an HP Jetdirect print server card (HP Color LaserJet 4610n model)
5 Theory of operation
Basic operation
Operation sequence
Engine-control system
DC controller circuit
Motors, fans, and environment sensor
Fuser power-supply circuit
Heater temperature control
High-voltage power supply
Low-voltage power supply
Formatter system
PowerSave
Input/output
Parallel interface
Expanded I/O (HP Color LaserJet 4600 models)
USB 1.1 connector (HP Color LaserJet 4610n and 4650 models)
Flash (HP Color LaserJet 4600 models)
vi ENWW
Hard-disk accessory (HP Color LaserJet 4600 and 4650 models)
Printer memory
Read-only memory
Random-access memory
DIMM slots (HP Color LaserJet 4600 Series printer)
Firmware DIMM (HP Color LaserJet 4600 models)
Flash memory (HP Color LaserJet 4610n and 4650 models)
Nonvolatile memory
PJL overview
Control panel
Laser/scanner assembly
Scanner-motor control
Image-formation system
Image-formation process
Print cartridges
Memory tag
Toner-level detection
Developer rotations
Toner sensor
Photosensitive drum rotations
Developing cylinder disengaging control
Electrostatic transfer/transport belt (ETB) unit
Electrostatic-latent-image-formation block
Step 1: Primary exposure
Step 2: Primary charging
Step 3: Laser beam exposure
Development block
Step 4: Toner charging
Step 5: Development
Transfer block
Step 6: Attaching
Step 7: Transfer
Step 8: Separation
Fusing block
Step 9: Fusing
Cleaning block
Step 10: ETB cleaning
Step 11: Photosensitive drum cleaning
Calibration and cleaning
ETB cleaning
Photosensitive drum cleaning
Color-plane registration calibration
Drum phase calibration
Image stabilization control
Environmental change control (HP Color LaserJet 4610n and 4650 models). .156
Image density calibration control (DMAX)
Image halftone calibration control (DHALF)
Image density detection
ENWW vii
Pickup/feed system
Pickup/feed unit
Cassette detection and cassette paper-size detection
Overhead transparency detection
Small-size paper detection
Feed-speed control
Fuser/delivery unit
Duplex feed unit
500-sheet paper feeder
Pickup and feed operations
2 x 500-sheet feeder
Pickup and feed system
Cassette detection and cassette paper-size detection
6 Removal and replacement
Introduction
Repair notices
Caution regarding electrostatic discharge (ESD)
Required tools
Types of fasteners
Supplies
Print cartridges and ETB
Covers and external components
Rear cover
Top cover
Rear top cover
Left cover
Right cover
Multipurpose tray (tray 1)
Front cover
Control panel
Installing a new overlay (HP Color LaserJet 4600 models)
Installing a new control-panel label (HP Color LaserJet 4650 models)
Internal components
DC controller shield
Internal components (front)
Paper pickup unit
Paper pickup sensor PCA
Cassette (tray 2) paper pickup rollers
Paper pickup drive unit
Multipurpose tray pickup roller and separation pad
Solenoids
Color registration detection unit
Internal components (left side)
Environment sensor (HP Color LaserJet 4610n/4650 models only)
Drum drive units
Memory-tag antenna PCAs
Developing disengaging motor assembly
DC controller PCA
Memory controller PCA
viii ENWW
Cassette paper-size-detection switch
Internal components (rear)
Formatter
Low-voltage power supply
Power-supply fan (HP Color LaserJet 4610n and 4650 models)
Formatter case
Laser/scanner components
Remove the laser/scanner cover plate
Remove the laser/scanner retaining bars
To remove the laser/scanner assemblies
Internal components (right side)
High-voltage power supply PCA
Toner level detection PCA
High-voltage contact blocks
Door switch
Internal components (top)
Fuser power supply PCA
Fuser drive unit
Fuser inlet paper sensor
Fuser delivery sensor
Output-bin-full sensor
Cartridge fan
Formatter fan
Optional 500-sheet paper feeder (HP Color LaserJet 4600 and 4650 models only)
500-sheet paper feeder top cover plate
500-sheet paper feeder drive unit
500-sheet paper-feeder pickup rollers
500-sheet paper-feeder PCA
Optional 2 x 500-sheet paper feeder (tray 3/tray 4) (HP Color LaserJet 4650 only)
2 x 500-sheet paper feeder front cover
2 x 500-sheet paper feeder rear cover
2 x 500-sheet paper feeder left cover
2 x 500-sheet paper feeder right cover
2 x 500-sheet paper feeder upper-cassette pickup assembly
2 x 500-sheet paper-feeder drive assembly
2 x 500-sheet paper-feeder feed sensor
2 x 500-sheet paper feeder upper- or lower-cassette paper sensor
2 x 500-sheet paper feeder upper- or lower-cassette paper-detection switch
2 x 500-sheet paper-feeder driver PCA
2 x 500-sheet paper feeder pickup rollers
7 Troubleshooting
Introduction
Troubleshooting process
Pre-troubleshooting checklist
Troubleshooting basics
Troubleshooting power-on
Printer-error troubleshooting
Status messages
Warning messages
ENWW ix
Error messages
Critical error messages
Alphabetical printer messages (HP Color LaserJet 4600 models)
Alphabetical printer messages (HP Color LaserJet 4610n and 4650 models)
Numerical printer messages (HP Color LaserJet 4600 models)
Numerical printer messages (HP Color LaserJet 4610n and 4650 models)
Replacement-parts configuration (HP Color LaserJet 4610n and 4650 models)
Formatter and DC controller
Formatter (new or previously installed in another printer)
DC Controller (new or previously installed in another printer)
Paper-path troubleshooting
Jam locations
Jam locations by error message
Jam recovery
To disable paper jam recovery
Avoiding jams
Persistent jams
Basic troubleshooting for jams
Data collection
General paper-path troubleshooting
Paper-path checklist
Jams in tray 1
Jams in tray 2
Jams in tray 3 or tray 3/tray 4 (2 x 500-sheet paper feeder, HP CLJ 4650
Jams in the paper path
Jams in the top cover
Jams in the duplex path (HP CLJ 4600 and 4650 models only)
Media-transport troubleshooting
Multiple pages are fed
Media is wrinkled or folded
Paper is skewed
Image-formation troubleshooting
Online print-quality troubleshooting tools (HP Color LaserJet 4610n and 4650 models). .343
Print-quality problems associated with media
Overhead transparency defects
Print-quality problems that are associated with the environment
Print-quality problems that are associated with jams
Print-quality troubleshooting pages
Understanding color variations
Common causes of color variation
Color selection process
Matching colors
PANTONE®* color matching
Swatch book color matching
Using color
HP ImageREt 2400 (HP Color LaserJet 4600 models)
HP ImageREt 3600 (HP Color LaserJet 4610n and 4650 models)
Paper selection
Color options
Print in Grayscale
Automatic or manual color adjustment
Manual color options
Halftone options
Neutral Grays
Edge Control
RGB Color
Adjusting color balance
To adjust color density
Image defects troubleshooting
Light image
Light color
Dark image
Dark color
Completely blank image
All black or solid color
Dots in vertical lines
Dirt on the back of the paper
Dirt on the front of the paper
Vertical lines
White vertical lines
Horizontal lines
White horizontal lines
Missing color
Blank spots
Poor fusing
Distortion or blurring
Smearing
Misplaced image
Repetitive defects troubleshooting
Interface troubleshooting
Communications checks
EIO troubleshooting (HP CLJ 4600 and 4650 models only)
AUTOEXEC.BAT standard configurations
Parallel MS-DOS commands
Printer Job Language (PJL) commands
@PJL [Enter]
@PJL COMMENT
@PJL INFO CONFIG
@PJL INFO ID
@PJL INFO USTATUS
@PJL INFO PAGECOUNT
@PJL JOB
@PJL EOJ
@PJL ECHO
@PJL USTATUS JOB=ON/OFF
@PJL USTATUSOFF
ENWW xi
Control-panel troubleshooting
Printing a menu map
Information menu
Paper handling menu
Configure device menu
Printing menu
Print quality menu
System setup menu
I/O menu
Resets menu
Diagnostics menu
Service menu
Tools for troubleshooting
Embedded Web server (HP Color LaserJet 4600 and 4650 models only)
To open the embedded Web server
Information tab
Settings tab
Networking tab
Other links
Printer Status and Alerts software
To specify which status messages appear
To view status messages and information
Printer information pages
Menu map
Configuration page
Supplies status page
Usage page
Demo page
File directory page
PCL font list page
PS font list page
RGB samples page (HP Color LaserJet 4610n and 4650 models)
CMYK samples page (HP Color LaserJet 4610n and 4650 only)
Diagnostics
LED diagnostics
Engine diagnostics
Diagnostics mode
Diagnostics that put the engine into the special diagnostics mode
Diagnostic tests
Individual diagnostic tests
Print the event log page
View the event log on the control-panel display
Print the PQ troubleshooting pages
Disable cartridge check (special mode test)
Paper path sensor test (HP Color LaserJet 4610n and 4650 models)
Paper-path test
Sensor Test (special mode test)
Manual sensor test (special mode test; HP Color LaserJet 4610n and 4650
models)
Component test (special mode test)
xii ENWW
Print/Stop test
Information menu
Configure device menu/printing menu
Configure device menu/resets menu
Configure device menu/print quality menu
Test pages
Engine test page
Formatter test page
Engine resets
Cold reset
To perform a cold reset
NVRAM initialization
To initialize NVRAM
Resetting the calibration values for the DC controller
To reset the calibration values for the DC controller
Hard disk initialization
To initialize the hard disk
Calibration bypass
To bypass calibration
Calibrate Now (HP Color LaserJet 4600 models)
Quick Calibrate Now (HP Color LaserJet 4610n and 4650 models)
Full Calibrate Now (HP Color LaserJet 4610n and 4650 models)
Service menu
Using the Service menu
Clear event log
Total page count
Transfer kit count
Fuser kit count
Serial number
Service ID
Restoring the Service ID
Converting the Service ID to an actual date
Cold reset paper
Diagrams
Main parts
Switches
Sensors
Solenoids
Motors and fans
DC controller PCA
Connectors
General circuit diagram
8 Parts and diagrams
Introduction
Ordering parts and supplies
Parts that wear
Customer support
ENWW xiii
Supplies and accessories
Common fasteners
Illustrations and parts lists
Locations of major components
External covers and panels
Internal components
500-sheet paper feeder (HP CLJ 4600/4650 models only)
2 x 500-sheet paper feeder (HP CLJ 4650 models only)
Alphabetical parts list
Numerical parts list
xiv ENWW
1 Product information
This chapter contains information about the following topics:
Model configurations
Printer features
Printer assemblies
Identification, site requirements, and specifications
Print media
Environmental product stewardship program
Hewlett-Packard limited warranty statement
Declaration of conformity
Country/region laser safety statements
Japan power-cord statement
Model configurations
This manual describes the HP Color LaserJet 4600 models, the HP Color LaserJet 4610n model,
and the HP Color LaserJet 4650 models, which are referred to collectively as the HP Color LaserJet
4600 Series printers.
HP Color LaserJet 4600 Series printer
The following figures and table show the configuration for the various models of HP Color
LaserJet 4600 Series printer. The HP Color LaserJet 4600 printer and the HP Color LaserJet 4650
printer each come in five models.
Figure 1-1 HP CLJ 4600 Series printers
1 HP Color LaserJet 4600, 4600n, 4600dn, 4650, 4650n, and 4650dn printer and the HP Color LaserJet 4610n printer
2 HP Color LaserJet 4600dtn, 4600hdn, and 4650dtn printer
3 HP Color LaserJet 4650hdn printer
Table 1-1 HP Color LaserJet 4600 model configurations
Base model: HP Color LaserJet 4600 printer (product
number C9660A)
The HP CLJ 4600 printer is the base model, which includes
96 megabytes (MB) of synchronous dynamic random access
memory (SDRAM) and one 500-sheet input tray.
Callout 1 in
Figure 1-1 HP CLJ 4600 Series printers shows
the HP Color LaserJet 4600 printer.
2 Chapter 1 Product information ENWW
8 Parts and diagrams
This chapter contains information about the following topics:
Introduction
Ordering parts and supplies
Illustrations and parts lists
External covers and panels
Internal components
500-sheet paper feeder (HP CLJ 4600/4650 models only)
2 x 500-sheet paper feeder (HP CLJ 4650 models only)
Alphabetical parts list
Numerical parts list
ENWW 451
Locations of major components
Figure 8-1 Major components of the HP Color LaserJet 4600 Series printer
1 Fuser assembly
2 ETB assembly
3 Paper pickup assembly
4 Cassette
5 Paper pickup drive assembly
6 Disengaging drive assembly
7 Drum drive assembly (cyan/magenta)
8 Drum drive assembly (yellow)
9 Drum drive assembly (cyan/magenta)
10 Drum drive assembly (black)
11 Fuser drive assembly
ENWW Illustrations and parts lists 461
hp color LaserJet 4600
4600n, 4600dn, 4600dtn, 4600hdn
service
LaserJet 4600
HP Parts Reference Guide™
www.hp.com/go/ hpparts
500 Sheet Feeder Assembly
Tray Assembly
C9664-67901 Optional 500 sheet paper feeder and Tray 3 paper feeder assembly
500 Sheet Tray
2 RB2-8349-000CN Paper size arm - Senses paper size in paper tray - 3 used
3 RF5-3750-020CN Tray 2 separation pad
RF5-3749-000CN Separation plate for Tray 2 - Black plastic T shape with friction pad
Roller
5 RG9-1529-000CN Pickup roller for multi-purpose tray/Tray 1 - Mounts in top/front of Tray 2
6 RG1-4140-080CN 500 sheet paper feeder paper cassette - Optional 500 sheet feeder paper tray
Tray Assembly
7 RG5-6476-090CN Tray 2 paper cassette assembly
Accessories
Cable (Interface)
92215N Interface cable kit - For HP peripherals designed for use in an AppleTalk/Phonenet network - Not for Macintosh
models that have recessed I/O connectors
92215S RS-422 serial cable - 8 pin (M) to 8 pin (M) - 2.0m (6.6ft) long - For connecting Apple Macintosh with
LocalTalk/serial connector
C2946A IEEE-1284 Bi-Tronics parallel cable - DB-25 (M) connector (type A) to 36 pin high density IEEE-1284C (M)
connector (type C) - 3.0m (9.8ft) long
Cartridge
C9720-67901 Black toner cartridge - For the LaserJet 46XX series
C9720-67902 Black toner cartridge - For the LaserJet 46XX series - For sale in Europe ONLY
C9720A Black toner cartridge - For the LaserJet 4600 series
C9721-67901 Cyan toner cartridge - For the LaserJet 46XX series
C9721-67902 Cyan toner cartridge - For the LaserJet 46XX series - For sale in Europe ONLY
C9721A Cyan toner cartridge - For the LaserJet 4600 series
C9722-67901 Yellow toner cartridge - For the LaserJet 46XX series
C9722-67902 Yellow toner cartridge - For the LaserJet 46XX series - For sale in Europe ONLY
C9722A Yellow toner cartridge - For the LaserJet 4600 series
C9723-67901 Magenta toner cartridge - For the LaserJet 46XX series
C9723-67902 Magenta toner cartridge - For the LaserJet 46XX series - For sale in Europe ONLY
C9723A Magenta toner cartridge - For the LaserJet 4600 series
Cleaning Supplies
5090-3379 Toner cleaning cloth - Specially treated cloth for absorbing toner (1 per package) - Ideal for clening up toner spills
Film (Transparency)
C2934A Color LaserJet transparency film - A size (8.5 x 11-inches) - 50 sheets per box
C2936A Color LaserJet transparency film - A4 size (21.0cm x 29.7cm) - 50 sheets per box
Fusing Assembly
C9725A Image fuser assembly - Bonds toner to paper with heat - For 100 to 127VAC operation
C9726A Image fuser assembly - Bonds toner to paper with heat - For 220 to 240VAC operation
IR Assembly
C4103A HP FIR pod - Fast Infrared Connection pod
© 2004 Hewlett-Packard Development Company, L.P. venerd́ 30 luglio 2004 1


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