Contents
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Conventions used in this guide
TIP:
WARNING
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Table of contents
2 Removal and replacement
3 Solve problems
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4 Parts and diagrams
Appendix A Service and support
Appendix B Specifications
Appendix C Regulatory information
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1 Theory of operation
Major printer systems
Printer block diagram
Figure
Normal sequence of operation
Sleep mode
SYSTEM SETUP
Input/output
CPU
Optional hard disk
Firmware
Nonvolatile memory
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Motors, fans, clutches, solenoids, switches, and sensors
Figure 1-3 Motors
Figure 1-4 Fans
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Figure 1-9 Sensors
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DC controller operations
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Fuser-controlcircuit
Fuser failure detection
Fuser temperature control
Fuser protective function
Low-voltagepower supply
Overcurrent/overvoltage protection
High-voltagepower supply
Formatter heartbeat LED
DIMM slots
Laser/scanner system
Laser failure detection
Electrophotographic process
Image formation process
Latent-imageformation stage
Developing stage
Transfer stage
Figure 1-23 Fusing
Cleaning stage
Toner detection
●Read
●Write
Paper trays
Photo sensors and switches
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Solenoids and clutches
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Cassette paper size detection/cassette paper detection
Cassette pickup
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Tray driver PCA
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Media level and size detection
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2 Removal and replacement
Electrostatic discharge
Required tools
Types of screws
Print-qualitytest
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Parts removal order
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Print cartridge
Reinstallation tip
Tray cassette (Tray 2, Tray 3, or Tray 4)
Sub cover
EIO disk
DIMM cover and DIMM
Reinstall the DIMM
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Formatter cover and formatter PCA
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Rear-doorassembly
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Left cover
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Right-rearcover
Tray 1 (multipurpose tray) cover
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Cartridge-doorassembly
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Top-rightcover
Control panel
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Front-rightand right-sidecover assembly
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Lower-rightcover and bracket
To remove the bracket only:
Reinstall the lower-rightcover
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Top cover
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Tray 1 (multipurpose tray) pickup roller
Tray 1 (multipurpose tray) separation pad
Tray 2, Tray 3, or Tray 4 pickup roller
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Tray 2, Tray 3, or Tray 4 separation pad
Tray 2, Tray 3, or Tray 4 base-plateroller assembly
Transfer roller
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USB port PCA
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Power-switchassembly
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Main fan, fan duct, and environmental sensor
To remove the main fan only
To remove the main fan and fan duct
If only the main fan was removed
Fuser
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Registration assembly
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Duplex media-feedassembly
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Laser/scanner
51.1 ERROR
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Engine control unit (ECU)
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Cassette pickup (Tray 2) solenoid or Tray 1 (multipurpose tray) pickup solenoid
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Fuser motor
Sub fan and fan duct
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To remove the fan and duct
To remove the fan only
High-voltagepower supply (HVPS)
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3 Solve problems
Correctly adjust the sliding media guides
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PRINT MENU MAP
Determine the problem source
Power-onchecks
LED diagnostics
Engine diagnostics
Fuser test page
Paper-pathtest (and automatic sensors test)
Sensor test (interactive)
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A TOP (Top-of-Page)sensor
B Fuser output sensor
C Duplex sensor
D Paper width sensor
E Tray 3 feed sensor
F Tray 4 feed sensor
G FD tray full sensor
H Face up detect sensor
I Cartridge-dooropen switch
J Rear cover open sensor
K Tray 1 paper sensor
L Tray 2 paper sensor
M Tray 2 detect switch
N Tray 3 paper sensor
O Tray 3 detect switch
P Tray 4 paper sensor
Q Tray 4 detect switch
Print/stop test
Component tests
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Block diagrams
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Plug/jack locations
Location of connectors
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Locations of major components
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timing General
charts
General circuit diagram
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Cleaning page
Configuration page
Repetitive image-defectruler
Use the menus
Show Me How menu
Retrieve job menu
Information menu
Paper handling menu
Manage supplies menu
Configure device menu
PCL sub-menu
PCL
Print Quality menu
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System setup menu
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I/O menu
Embedded Jetdirect and EIO <X> Jetdirect menus
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Diagnostics menu
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Service menu
Control-panelmessage types
Control-panelmessages
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59.30 and 59.40 errors
59.50 and 59.60 errors
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Print an event log
Show an event log
Sample event-logpage
Clear an event log
Event-logmessages
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Common causes of jams
Jam locations
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Clear jams from the input trays
Clear jams from Tray
Clear jams from Tray 2 or an optional 500-sheettray
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Clear jams from the duplexer
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Clear jams from the output areas
Clear jams from the rear door and the fuser area
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Registration and transfer area
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Jam causes and solutions
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Avoid repeated jams
Change jam recovery
AUTO
OFF
Set the jam recovery feature
JAM RECOVERY
Product feeds multiple sheets
Product feeds incorrect page size
Product pulls from incorrect tray
Paper does not feed automatically
Paper does not feed from Tray 2, 3, or
Transparencies or glossy paper will not feed
Envelopes jam or will not feed in the product
Output is curled or wrinkled
Product does not duplex or duplexes incorrectly (duplex models)
Image defect examples
Perform the following test
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Clean the product (service visit)
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Solve direct-connectproblems
Solve network problems
Service menu
Restore factory settings
Hard disk initialization
Skip disk-load
NVRAM initialization
NVRAM INIT
Service ID
Restore service ID
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Convert the service ID to an actual date
Product cold reset
Use the flash executable file to update the firmware
Use FTP to upload the firmware through a browser
Use FTP to upgrade the firmware on a network connection
Use HP Web Jetadmin to upgrade the firmware
Use Microsoft Windows commands to upgrade the firmware
Device Management
Navigation
Device Lists
Device Tools
Jetdirect Firmware Update
4 Parts and diagrams
Order parts, accessories, and supplies
Related documentation and software
Supplies part numbers
Accessories part numbers
Whole-unitreplacement part numbers
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Base product (no optional trays or accessories)
Base product (optional trays or accessories)
Figure 4-3 Covers
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500-sheetinput tray (Tray 3 and Tray 4)
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A Service and support
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B Specifications
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C Regulatory information
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Protecting the environment
Ozone production
Power consumption
Toner consumption
Paper use
United States and Puerto Rico
Non-U.S.returns
Material restrictions
Chemical substances
Material Safety Data Sheet (MSDS)
For more information
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Laser safety
Canadian DOC regulations
VCCI statement (Japan)
Power cord statement (Japan)
EMC statement (Korea)
Laser statement for Finland
Luokan 1 laserlaite
VAROITUS
VARNING
HUOLTO
Substances Table (China)
Index