LaserJet 2100 printer Service Manual
This manual contains the necessary information to service the HP LaserJet 2100 Series printer. Contents: 1 Product information
Printer features
Identification
Specifications
Product overview
External assembly locations
Internal assembly locations
Safety information
Toner safety
Laser safety
LED safety
Regulatory information
FCC regulations
Declaration of conformity
Environmental Product Stewardship Program
Protecting the environment
Service approach
Bench repair warranty
HP Express Exchange
Ordering information
Supplemental documentation
HP Direct ordering for genuine HP parts
Consumables
World Wide Web
HP service parts information compact disc
HP support assistant compact disc
Reseller sales and service support
Technical assistance
Worldwide sales and service offices
2 Operating requirements
Site requirements
Operating environment
Printer space requirement
Media specifications
General media specifications
Guidelines for selecting paper
Media input options
Tray 1 media sizes
Tray 2 and tray 3 (250-sheet feeder)
Tray 3 (500-sheet feeder)
Envelope specifications
Label specifications
Transparency specifications
Storing print media
Shipping print media
Paper fillers
Testing media specifications
Tools and suppliers
3 Printer configuration
Using the control panel
Control panel
Control panel lights
Job Cancel
Go
Printing a demo page
Self test/configuration page
Self test/configuration-page elements
JetDirect configuration page
JetDirect configuration-page elements
Continuous self test
Engine test
Performing an engine test
Service mode
Entering service mode
Entering escape characters
Setting the page count
Setting the cold reset default
Resetting the printer
Cold reset
NVRAM initialization
EIO card reset
Network printing
Installing an HP JetDirect EIO card
IR printing
Fast Infrared Receiver
Using the FIR port
4 Printer maintenance
Service check points
Periodic inspection of parts
Cleaning the printer and accessories
General cleaning
Internal cleaning
Engine cleaning
Toner cartridge information
Storage
Handling instructions
Refilled toner cartridges
Recycling toner cartridges
Toner cartridge weights
Toner cartridge life expectancy
Saving toner with EconoMode
Redistributing the toner
5 Theory of operation
Basic operations
Power-on sequence
Basic print-period operating sequences
Printer timing
Printer functionality and operation
Formatter system
Formatter hardware
Formatter subsystem
Engine control system
Engine control subsystems
Image formation system
Pickup/feed system
Sheet feeder
Media detection
Media detection
Media-size detection
Jam detection
Pickup sensors
Delivery sensors
Reversing sensors
Duplexer sensors
Paper-feed sensor
6 Removal and replacement
Removal and replacement strategies
Required tools
Toner cartridge removal and replacement
Remove the toner cartridge
Cover and tray removal and replacement
Remove tray 3
Remove the cassette from tray 2
Remove I/O cover
Remove EIO card
Remove DIMM cover
Remove rear cover
Remove top cover
Remove left cover
Remove tray 1
Internal disassembly and assembly
Remove transfer roller
Remove DIMM
Remove formatter PCB
Remove EIO shield and guide
Remove fuser assembly
Remove fuser-film heater assembly
Remove pressure roller
Remove duplexer tray
Remove duplexer media guide
Remove power supply assembly
Remove upper output delivery roller
Disassemble the upper output delivery roller
Remove lower output delivery rollers
Remove laser/scanner assembly .
Remove transport belts and rollers .
Remove ribbon cable harness
Remove duplexer reverse motor
Remove printer drive assembly
Remove engine controller assembly
Remove main motor
Remove motor plate
Remove printer drive assembly gears
Remove tray 1 pickup roller
Remove tray 1 pickup roller assembly
Remove tray 1 separation pad assembly
Remove tray 1 paper-sensor lever
Remove tray 1 solenoid
Remove tray 2 pickup roller assembly
Replace tray 2 pickup roller
Remove tray 2 pickup roller and refeeder assembly
Remove tray 2 solenoid
Remove duplexer drive gears and solenoid
Remove registration assembly
Remove tray 3 assembly connector
Remove cooling fan
Remove toner-cartridge guide
Remove dc bias voltage contacts (leaf springs)
Tray 3 disassembly and assembly
Remove tray 3 (250-sheet feeder) cassette
Remove tray 3 (250-sheet feeder) pickup roller
Remove tray 3 (250-sheet feeder) feeder drive assembly
Remove tray 3 (250 sheet-feeder) drive solenoid
Remove tray 3 (500-sheet feeder) cassette
Remove tray 3 (500-sheet feeder) pickup roller
Remove tray 3 (500-sheet feeder) feeder drive assembly
Remove tray 3 (500 sheet-feeder) drive solenoid
7 Troubleshooting
Troubleshooting process
Preliminary operating checks
Basic fault isolation
Troubleshooting process flow
Power-on
Troubleshooting with control-panel messages
Control panel lights
Control-panel light messages
Media-handling problems
Print test pages
Engine test
Self test/configuration page
Jam troubleshooting
Media problems
Evaluate the test pages
Status-log messages
Verify installed options
Image-formation troubleshooting
Image defect tables
Repetitive defect ruler
Half self test functional check
Drum-rotation functional check
Media troubleshooting
Determine the problem source: print media or printer
Isolate a paper path
Isolate a media brand
Isolate a media type
Evaluate media use practices
Evaluate environmental conditions
Communication troubleshooting
Communications check
Test message
EIO troubleshooting
JetDirect configuration-page elements
JetDirect configuration
Reference diagrams
8 Parts and diagrams
Introduction
Ordering parts
Ordering consumables
Consumables, accessories, and supplies
Common fasteners and torque values
Illustrations and parts lists
External covers and panels
Top cover assembly
Internal components
Power supply assembly
Printer drive assembly
Cassette pickup assembly
Fusing assembly
PCB assembly location
250-sheet feeder external covers
Tray 2 and 250-sheet feeder cassette
250-sheet feeder internal components
250-sheet feeder drive assembly
250-sheet feeder PCB assembly location
500-sheet feeder external covers
500-sheet feeder cassette
500-sheet feeder internal components
500-sheet feeder drive assembly
500-sheet feeder PCB assembly location
Alphabetical parts list
Numerical parts list
Index
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