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Page
HP LaserJet 3100/3150 Product
Copyright Information
Warranty
Contents
Functional overview
Troubleshooting
Parts and diagrams
Figures
Contents-7
Fuser pressure plate removal 114
Page
Page
Tables
Contents-11
Page
Product Information
Chapter contents
Introduction
Product features Feature Description
Product features
Physical specifications Category Specification
Product specifications
Performance specifications Category Specification
Operating acoustical emissions per ISO 9296 specifications
Power specifications Category Specification
Skew specifications
Model number C3948A
Model and serial numbers
Model number C4256A
Document scanner path
Product overview
Printer path 1
Printer path 2
Rear view
Laser safety statement
Safety
Regulatory information
Transportation
Luokan 1 laserlaite Klass 1 Laser Apparat
Laser statement for Finland
Varoitus
Varning
FCC part 68 requirements
FCC regulations
RJ11C
Telephone consumer protection act U.S
IC CS-03 requirements
Declaration of conformity
Conforms to the following Product Specifications
Environmental product stewardship program
Canadian DOC regulations
Protecting the environment
This HP LaserJet printer design eliminates Ozone production
Paper use
Toner consumption
HP LaserJet Printing Supplies
Paper
Spare parts and consumables availability
Material safety data sheet
Installation and operation
Environmental requirements Category Requirement
Operating environment
Input for document feeder tray for document scanner path
Media requirements
Output capacities
Storage conditions
Toner cartridge information
Storing opened toner cartridges
Toner Recycling
Control panel layout
Control panel
Control panel messages Message Cause
Control panel messages
From Scanner
Clear Document
Communication Error
Control panel messages Message Cause Solution
Config. Tied Addr
Configuration
Decoding Error #
Encoding Error
Fax Memory Error
Lost Power failure
Fax Document was
#number
Memory Full Send
Modem Error #
Unscanned Pages
Memory is Full
No Memory for
When nothing was in memory
Report
Erase/Print
Paper Bin is Empty
Password must be
Please Add Paper
Digits
Printer Comm Error
Polling-In Error
Or No Cartridge Cartridge is not installed properly
Printer Cover Open
Call for Service Problem has occurred with the print Engine
Printer Laser Error
Printer Motor Error
Call for Service Engine
Redial Failed
Error
Remote Fax was
Busy Scan Reference
Speed Dial number
System Error
Is not Assigned
Memory Had been received to memory
To print a menu tree
Menu tree
Menu tree for the HP LaserJet 3100 product
Menu tree for the HP LaserJet 3150 product
Maintenance
Life expectancies of consumables
Life expectancies of consumables
Cleaning and maintaining the equipment
Cleaning the document scanner path
Page
Cleaning the print path
Page
Page
To use a cleaning
Using a cleaning
Page
Functional overview
Basic functions
Basic configuration
Printer functions
Printer unit functional block diagram
ECU loads
ECU/power system
Print engine control system
AC power distribution
Power system on ECU
DC power distribution
DC power distribution
High-voltage power supply circuit
High-voltage power distribution
Central processing unit
Formatter system
Memory
Read-only memory ROM
Random-access memory RAM
Draft mode
Parallel interface
Control panel
Toner cartridge
Image formation system
Scanning exposure
Primary charging
Developing
Transferring
Drum cleaning
Separating
Fixing stage
Printer feed system
9 10 11
Paper jam detection
Solenoid, photosensors, and switches
Solenoid, photosensors, and switches
Document scanner system
Simplified document path
Timing Period Purpose Remarks
Basic sequence of operation formatter-to-printer
General timing diagram
Removal and replacement
Removal and replacement strategy
After completing service
Before performing service
Required tools
Back cover
Covers
Back cover removal 2
To reinstall
Right side cover removal
Right side cover
Left side cover removal
Left side cover
Left front cover removal
Left front cover
Top cover removal
Top cover
RFI shield removal
RFI shield
Printer door
Document scanner assemblies
Printer door removal 2
Printer door removal 3
Document release door removal 1
Document release door
Document release door removal 2
Upper guide assembly removal 1
Upper guide assembly
Upper guide assembly removal 2
Contact image sensor removal 1
Contact image sensor
Contact image sensor removal 2
Document scanner assembly/motor removal 1
Document scanner assembly/motor
Document scanner assembly/motor removal 2
Document scanner pickup roller removal
Document scanner pickup roller
LIU board
Internal assemblies
Formatter board removal 1
Formatter board
Formatter board removal 2
Metal side plate removal
Metal side plate
Exit roller removal
Exit roller
Delivery assembly removal 1
Delivery assembly
Delivery assembly removal 2
Fuser pressure plate removal
Fuser pressure plate
Fuser pressure plate replacement
Front casing removal
Front casing
Heating element removal 1
Heating element
Heating element removal 2
Pressure roller guide removal
Pressure roller
Able to feel the spring’s release mechanism
Face-up/face-down lever
Fuser exit roller assembly removal
Fuser exit roller assembly
Paper exit sensor flag
Paper exit sensor flag replacement
Laser/scanner assembly removal
Laser/scanner assembly
Solenoid removal 1
Solenoid
Solenoid removal 2
Pickup roller assembly removal 1
Pickup roller assembly
Pickup roller assembly removal 2
Paper pickup roller assembly replacement
Paper feed frame removal 1
Paper feed frame
Paper feed frame removal 2
Paper feed frame removal 3
Transfer roller guide and transfer roller removal
Transfer roller guide and transfer roller
Kick plate removal
Kick plate
Kick plate spring replacement
Separation pad removal
Separation pad
Subpad removal
Subpads
Feed assembly removal 1
Feed assembly
Feed assembly removal 2
Feed assembly removal 3
Cable guide
Bottom assemblies
Motor removal
Main Motor
ECU
ECU removal 2
ECU removal 3
ECU removal 4
Feet removal
Feet
Troubleshooting
Verification steps Possible problems Solutions
Basic troubleshooting
Is Power On successful?
Do engine tests and internal
Is the product ready?
Reports print?
Does the product send a fax?
Is the copy function operational?
Does the product receive a fax?
Is the software installed correctly?
Does the product print from
Computer?
Decoding Error
Error messages
Message Cause
#number Image processing chip
No Modem Installed
If neither of these solutions works, replace the formatter
Error LaserJet 3100/3150 product
Call for Service Damaged
Servicing
Check the toner cartridge
Image formation troubleshooting
To redistribute toner in the cartridge
Problem Cause
Solving image quality problems
Parts of the page around the edges aren’t printing
Images will not
Or print is not faded, but vertical white stripes appear on
Horizontally
Aligned black Installed Streaks or smears Appear
Shadows or Repetitive marks Appear on
Light character
Character voids
Solid black Paper
Characters are
Completely black
Only partially Printed also
Referred to as Dropouts
Blank pages are
Always printing Installed
Print is misaligned on the page skewed pages
Clear
Scanned text is not
Scanned images
Print at a reduced Image Size
Pages are coming
Solving paper feed problems
Long pages stop
Feeding through
Scanned items are
Crooked Adjusted properly
Paper guides are not adjusted properly
Tray fall forward out
Not install a driver Windows will not prompt
Solving general software problems
Not connected to your computer
Software did not install Windows 95, 98, or NT4.0
Is securely connected
All in One on
Your HP LaserJet
Network
Find an All in One at
Simple hardware test
Functional checks
To perform the simple hardware test
Engine test button location
Engine test
To print an engine test
Internal reports
To print a configuration report
To run a self-test and print a self-test report
To print a demonstration
To print all reports at once
Printing all reports at once
Half-self test functional check
Drum rotation functional check
Heating element check
Checking the toner cartridge connection points
High-voltage power supply check
Paper curl
Checking the high-voltage connector assembly
To override SW101
Paper path check
Paper path and components
Troubleshooting tools
Document path and components
Document path and components
Repetitive image defect ruler
Repetitive image defect ruler
Document scanner recalibration
Pressing VOLUME+CONTRAST
Press once to display Service and press ENTER/MENU
General circuit diagram 1
Main wiring
General circuit diagram 2
Control panel service menu
Service menus
Tests in control panel service mode
Control panel service menu
Extended service menu
Control panel can
Extended service menu tree
Fax memory test #1 Program test #1
Self-test in extended service mode
Extended service mode tests Test Explanation
Other tests in extended service mode
Extended service mode reports Report Explanation
Reports in extended service mode
Clear memory in extended service mode
To change the country code softswitch
Softswitches
Press Stop/Clear
Country/region code softswitch sequences
Firmware and software downloads
Hardware, software, and firmware compatibility
Hardware, software, and firmware compatibility
Translating the fax trace report
Fax trace report
Sequence Calling station Called station
Fax phase sequence
Appropriate responses
Commands Comments Appropriate responses
Fax abbreviations
Abbreviation Function Signal format X= any #
MSG
Example of a successfully sent fax
Example of a successfully received fax
Explanation of DBM
Troubleshooting
Parts and diagrams
Ordering parts
How to use the parts lists and diagrams
Consumables and accessories Product number Description
Consumables and accessories
Power cable- Hong Kong SAR
Ordering consumables
Common fasteners ExampleDescription
Common hardware
Major assembly locations
Supports
Supports Reference Part number Description
External covers and panels
External covers and panels Reference Part number Description
Printer door 1
Printer door 1 Reference Part number Description
Printer door 2
Printer door 2 Reference Part number Description
Document scanner assembly
Document scanner assembly Reference Part number Description
Internal components 1
Internal components 1 Reference Part number Description
Internal components 2
Internal components 2 Reference Part number Description
Internal components 3
Internal components 3 Reference Part number Description
Electrical components assembly
Common hardware
Paper pickup assembly
Paper pickup assembly Reference Part number Description
Feed assembly
Feeder assembly Reference Part number Description
Separation guide assembly
Separation guide assembly Reference Part number Description
Delivery assembly
Delivery assembly Reference Part number Description
Alphabetical parts list Part name Part number
Alphabetical parts list
Alphabetical parts list
Figure # Reference
Figure # Reference
Figure # Reference
Figure # Reference
Figure # Reference
Numerical parts list Part number Part name
Numerical parts list
Figure # Reference
Paper path lever-LJ 3150 darker in color
Figure # Reference
Cable, grounding, document scanner motor
Figure # Reference
When to replace the document scanner separation pad
Document scanner separation pad replacement
Document scanner separation pad replacement
How to replace the document scanner separation pad
Index
Index
Index
Index
Index
Index
Index
Index
Index
Index
Index
Index
Index
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Manual Part No. C4256-90954