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LaserJet Pro 400 CZ195ABGJ manual
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118 pages, 27.05 Mb
LASERJET PRO 400
Repair Manual
M401
Contents
Page
Page
Page
Page
Conventions used in this guide
Page
Table of contents
2 Parts and diagrams
Page
Page
List of tables
Page
List of figures
Page
Page
Page
1 Removal and replacement
Removal and replacement strategy
Electrostatic discharge
Required tools
Types of screws
Service approach
Before performing service
After performing service
Post-servicetest
Print-qualitytest
order removal Parts
Removal and replacement procedures
Rollers
Multipurpose (MP) tray pickup roller
Multipurpose (MP) tray separation pad
Reinstallation tip
Page
Tray 2 and optional Tray 3 pickup roller
Tray 2 and optional Tray 3 separation pad
Covers and control panel
Left cover
Right cover
Top cover with LCD control-panelmodule
LCD control panel
Page
Top cover with touchscreen control-panelmodule
Page
Touchscreen control panel
Page
Rear cover, rear door, and feed assembly
Page
Page
Cartridge door and front cover assembly
Page
Page
Main assemblies
Laser scanner assembly
Registration roller assembly
Page
Fuser assembly and paper feed guide
Page
Page
Face down drive or duplex drive assembly
Page
Solenoids
Tray 1 solenoid
Duplex solenoid
Page
Motors and fans
Main motor
Page
Fan
Page
Printed circuit-boardassemblies (PCAs)
Engine controller assembly (DC controller) PCA
Page
Page
Page
Page
Universal serial bus (USB) PCA
Page
Formatter PCA
Wireless PCA
Power switch PCA
Page
Connecting PCA
Miscellaneous parts
Transfer roller
Multipurpose (MP) tray pickup gear assembly
Optional paper feeder (Tray 3)
Optional paper feeder right cover
Optional paper feeder driver PCA
Optional paper feeder paper sensor PCA
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Page
Page
2 Parts and diagrams
Order parts by authorized service providers
Order replacement parts
Related documentation and software
Supplies part numbers
Whole-unitreplacement part numbers
Page
How to use the parts lists and diagrams
Assembly locations
HP LaserJet M401a, M401n, M401d models
HP LaserJet M401dn and M401dw models
Optional paper feeder
Covers, panels, and doors
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Page
Page
Internal assemblies
Page
Page
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Page
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Page
Page
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Page
Page
Input devices
500-sheetpaper feeder
Paper feeder covers
Page
Paper feeder main body (1 of 2)
Page
Paper feeder main body (2 of 2)
Page
Alphabetical parts list
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Page
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Page
Numerical parts list
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Page
Index
