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5L, 6L
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Separation Guide Assembly
Models:
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6L
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Troubleshooting
Specs
Install
Parts list
Error codes
Image Formation Block Diagram
Connector Signal Name Remarks
Hardware Error There is an
Warranty
Dimension
Page 175
Image 175
Figure
8-9
Separation Guide Assembly
8-22
Parts and Diagrams
Page 174
Page 176
Page 175
Image 175
Page 174
Page 176
Contents
Page
HP LaserJet 5L HP LaserJet 6L C3941A C3990A
Warranty
Conventions
Chapter Descriptions
Here are required statements regarding RFI and laser safety
List of Figures
Figure B-1 Vcci Statement Japan
List of Tables
Viii
Product Information
Contents
Product Information
Paper Capacities and Sizes
Printer Features
Printer Features
Features Descriptions
Model and Serial
Identification
HP LaserJet 5L Model and Serial Numbers
HP LaserJet 6L Model and Serial Numbers
Acoustic Emissions
Specifications
Performance Specifications
Electrical Specifications
Front/Side Views of the Printer
Product Overview
Front Door Assemblies
Back View of the Printer
Ordering Consumables
Service Approach
Parts Exchange Program
Ordering Parts
Description
Related Documentation
Technical Assistance
Online Services for
North American Response Center
Worldwide Support
Warranty Exclusions
Warranty
Regulatory requirements
Warranty Limitations
Voltage Conversions
Products sold within one country to another country
Product Information
Site Requirements
Site Requirements
Environmental Requirements
Consider the following points before installing the printer
Site Requirements
Operating Environment
Description Dimension
Printer Space Requirements Printer Dimensions
Printer Space Requirements
Storage Conditions
HP C3906A/F Toner Cartridge
Storing Opened Toner Cartridges
Toner Cartridge Distribution
Toner Cartridge Handling Suggestions
Operating Overview
Operating Overview
Control Panel Layout
Using the Control Panel
It means this Do this
Indicator Lights 1
When this Indicator
LED Lights
Hardware Error There is an
Indicator Lights 2
Front Panel Button Usage
Front Panel Button
Function Lights Action Result
Self-test Page for HP LaserJet 5L
Printing a Self-Test
Self-test Page for HP LaserJet 6L
To print a self-test
Printer’s rated speed
Continuous Self Test
Engine Test Button
Useful for checking and adjusting registration
Refer to Engine Test in for the engine test procedure
Printing an Engine Test
To Reset the Printer
Resetting the Printer
Operating Overview
Printer Maintenance
Printer Maintenance
Life Expectancy of Consumables
Life Expectancy of Consumables
Five Percent Text Coverage
Toner Cartridge Life
Saving Toner with EconoMode
Toner cartridge box
Information
Some software applications may refer to this as draft mode
Refilled Toner Cartridges
Recycling Toner Cartridges
Cleaning the Printer
Contaminants on the roller can cause print quality problems
Cleaning Printer Components
Cleaning Printer Components
Stains into fabric
Cleaning Spilled Toner
Functional Overview
Functional Overview
Basic Printer Functions
Printer Functional Block Diagram
DC Controller Loads
DC Controller/Power System
Laser and Scanner Drive
Print Engine Control System
Power System on DC Controller PCA
T e
Functional Overview
Control Panel
Resolution Enhancement REt
EconoMode
EconoMode vs Normal Mode
Memory Enhancement technology MEt
Functional Overview 5
Image Formation System
Image Formation Block Diagram
Image Writing
Drum Cleaning
Toner Cartridge
Drum Conditioning
Image Developing
Image Fusing
Image Transferring
Paper Feed System
Simplified Paper Path
Name Description
Solenoid and Sensors Solenoid and Photosensors
Paper Jam Detection
Period Timing Purpose
Refer to Timing Diagram on the next
Basic Sequence of Operation
Printer Timing
General Timing Diagram HP LaserJet 5L
General Timing Diagram HP LaserJet 6L
Functional Overview
Removal and Replacement
Removal and Replacement
Removal and Replacement Strategy
Removal and Replacement
MByte card MByte total
Installing Memory Cards Dram
Remove the 3 screws -2, callout
Ease of replacement
Covers and Doors
Back Cover
Back Cover Removal 2
Make certain the Input Extender is up
EP Door Assembly Removal
EP Door Assembly
Memory Door Removal
Memory Door
Without removing the memory door
Main Cover and Paper Input Assembly
Main Cover and Paper Input Assembly Removal
Remove the toner cartridge Remove memory door
Control Panel Removal
Internal Assemblies
Exit Roller Removal
Exit Roller Assembly
Delivery Assembly Removal 1
Delivery Assembly
Delivery Assembly Removal 2
Fuser Pressure Plate Removal
Fuser Pressure Plate
Fuser Pressure Plate Replacement
Heating Element Removal 1
Heating Element
Heating Element Removal 2
Lift the Heating Element out
Make sure the connectors are properly reattached
Heating Element Removal 3
On the right side of the shaft. Refer to for a part number
Pressure Roller
Pressure Roller Guide Removal
Release mechanism
Face-Up/Face-Down Lever Replacement
Face-Up/Face-Down Lever
Unchanged. -17 shows the lever from an HP LaserJet 5L
Shows the white tab from an HP LaserJet 5L
Fuser Exit Roller Assembly
Fuser Exit Roller Removal
Paper Exit Sensor Flag Replacement
Reinstalled to exactly this position
Paper Exit Sensor Flag
Laser/Scanner Assembly Removal
Laser/Scanner Assembly
Top Assemblies
Solenoid Removal 1
Solenoid
Solenoid Removal 2
Only one way
Pickup Roller Assembly Removal 1
Pickup Roller Assembly
Pickup Roller Assembly Removal 2
Paper Pickup Roller Assembly Replacement Inside/Front View
Assembly Figure
Paper Feed Frame Removal 1
Paper Feed Frame
Paper Feed Frame Removal 2
Paper Feed Frame Removal 3
Paper Feed Frame Removal 4
Release the sensor unit connector Figure
Transfer Roller Guide & Transfer Roller
Kick Plate Removal
Kick Plate
Kick Plate Spring Replacement
Separation Pad Removal
Separation Pad
Press toward the top of the printer
Subpads
At the same time
Place your index finger on the subpad
Feed Assembly Removal 1
Feed Assembly
Feed Assembly Removal 2
Remove the Feed Assembly
Feed Assembly Removal 3
Memory Door Guide
Bottom Assemblies
Memory Door Guide Removal
Motor Removal
Motor
DC Controller Removal 1
DC Controller
DC Controller Removal 2
ESD Sensitive
DC Controller Removal 3
Correct pieces should you need to replace them
Formatter PCA
Formatter Board Removal
Removal and Replacement
Troubleshooting
Troubleshooting
Start
General Troubleshooting Flowchart
Exit
Paper Path and Components
Paper Path and Components
DC Controller Diagram
Persists
Printer Error Troubleshooting
Priority of Errors
∙ Status Messages ∙ Service and Error Messages
Printer Status Messages 1
Printer Status Messages
LEDs Description Recommended Action
Unclearable Error
Happens, troubleshoot using -3 below
Printer Status Messages 2
Service and Error Messages 1
Service and Error Messages
Beam Error. There are a number of causes
Formatter Error
Service and Error Messages 3
Check the Toner Cartridge
Image Formation Troubleshooting
Oz grams
∙ Replace the DC Controller
Image Defect Examples
Vertical Lines
∙ Your paper may not meet the requirements for the printer
Character Voids
Dropouts
Is completely blank. If you get occasional blank pages
∙ Replace the DC Controller Troubleshooting
White Horizontal Line
Distorted Image or BD Failure
Engine Test
Troubleshooting Checks
Engine Test
Troubleshooting
Drum Rotation Functional Check
Checks Action
High-Voltage Power Supply Check
High-Voltage Power Supply Check
Toner Cartridge High Voltage Connection Points 1
Toner Cartridge High Voltage Connection Points 2
Paper Curl
Paper Curl Troubleshooting
Possible Cause Recommended Action
Overriding PS204 and SW101
Troubleshooting Tools
Paper Path Check
Remove the Printer Covers Figures 6-2, 6-3,
Repetitive Image Defect Ruler
Repetitive Image Defect Ruler
Troubleshooting
Main Wiring Diagram
Cable Pinouts
Connector Signal Name Remarks
Frsth
Troubleshooting
Parts and Diagrams
Parts and Diagrams
How to Use the Part Lists and Diagrams
Parts and cannot be ordered through SMO
Accessories and Supplies
Accessories and Supplies
Product Number Description
Example Description
Common Hardware
Major Assembly Locations
Covers and Doors
Qty Description
Internal Components 1
LaserJet 5L Part No
Internal Components 2
LaserJet 5LPart No
Internal Components 3
Parts and Diagrams
DC Controller/Formatter and Cables
DC Controller Case
Pickup Roller Assembly
Parts and Diagrams
Feed Assembly
Parts and Diagrams
Separation Guide Assembly
Parts and Diagrams
Delivery Assembly
Parts and Diagrams
Parts and Diagrams
Parts Index A-1
Parts Index
Parts Index
Alphabetical Parts List
Parts Index
Index
Parts Index A-3
Parts Index
Parts Index A-5
501/502
Numerical Parts Index
Parts Index A-7
Numerical Parts List
Parts Index A-9
Parts Index
Parts Index A-11
Parts Index
Regulatory Information
Laser Safety U.S.A
Regulatory Information
Laser Statement Finland
Ozone Emission
Toner Safety
Regulatory Information B-3
Figure B-1
FCC Statement Class B
Fuser Accordian Jams
Service Notes C-1
C3941A-01
Solution
Service Notes
Fuser Jam Clearing Countermeasure
Service Notes C-3
C3941A-02A
Service Notes
Index-1
Index
Index-2
Index-3
Safety
Index-4
C3990-90991
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