HP LaserJet Pro 300 color MFP M375nw HP LaserJet Pro 400 color MFP M475dn/dw Service Manual, Parts List Manual and Software Technical Reference

Accurate, clear and concise text, combined with detailed illustrations, lists of error code, instruction and diagrams, guide you through procedure of repair, remediate, maintenance and adjustments your copier, printer or scanner.
Present service manual and parts list manual HP LaserJet Pro 300 color MFP M375nw HP LaserJet Pro 400 color MFP M475dn/dw contain clear instructions and procedures on how to fix the problems occurring in your equipment.
The information contained in this repair manual is necessary for the repair, but also prevention, resulting in a longer life of your equipment.
Format of the manual: PDF, makes it easy to navigate, instant download and print. English language.
To see what contain, please read table of contents:

Removal and replacement strategy
Removal and replacement strategy
Electrostatic discharge
Required tools
Types of screws
Service approach
Before performing service
After performing service
Post-service tests
Test 1 (print-quality test)
Test 2 (copy-quality test)
Test 3 (fax-quality test; fax models only)
Parts removal order
Removal and replacement procedures
Rollers and pads
Transfer roller
Pickup roller (Tray 2 and Tray 3)
Separation roller (Trays 2 or 3)
Reinstall the separation roller
Document feeder pickup roller assembly
Pickup roller and separation pad (Tray 1)
Main assemblies
Print-cartridge drawer
DIMM cover
Right cover
Document feeder input tray
Scanner assembly
Right-front cover and power button
Rear-upper cover (duplex product)
Paper-feed guide assembly
Rear-door stopper and link caps (simplex product)
Rear door (simplex product)
Rear door (duplex product)
Rear cover and feed guide (simplex product)
Remove the rear cover and feed guide (simplex product)
Rear-lower cover and rear-door links (duplex product)
Remove the rear-lower cover and rear-door links (duplex product)
Rear-door rib assembly (duplex product)
Remove the rear-door rib assembly (duplex product)
Link guide
Control panel and right-arm mount
Reinstall the control panel and right-arm mount
Upper-cover assembly
Remove the upper-cover assembly
Reinstall the upper-cover assembly
Left cover
Remove the left cover
Reinstall the left cover
Front-door assembly
Remove the front-door assembly
Reinstall the front-door assembly
Intermediate transfer belt (ITB)
Reinstall the ITB
Drum motor (M1) and developer motor (M2)
Reinstall the drum motor (M1) and developer motor (M2)
Intermediate PCA
Formatter PCA and fax PCA
Remove the formatter PCA and fax PCA
Wireless PCA
DC controller PCA
Remove the DC controller PCA
Fuser-motor assembly
Remove the fuser-motor assembly
Reinstall the fuser-motor assembly
High-voltage power-supply PCA
Remove the high-voltage power-supply PCA
Color-misregistration sensor assembly
Remove the color-misregistration sensor assembly
Reinstall the color-misregistration sensor assembly
Fan (FM1)
USB PCA (fax/memory-card models)
Remove the USB PCA
Duplex-reverse drive assembly
Remove the duplex-reverse drive assembly
Remove the fuser
Reinstall the fuser
Paper-delivery assembly
Remove the paper-delivery assembly
Tray cassettes and optional Tray 3 assembly

Solve problems checklist
Menu map
Troubleshooting process
Pretroubleshooting checklist
Power-on checks
Troubleshooting tools
Component diagnostics
LED diagnostics
Network LEDs (network models only)
Control panel LEDs
Memory card LED (memory-card models only)
Component tests
Control-panel tests
Plug/jack locations
Location of connectors
DC controller PCA
Location of major components
Major components
Motors and fans
Optional 250-sheet cassette
General timing diagram
General circuit diagram
CPU/ASIC diagrams
HVT/Toner EMP diagram
Driver PCA diagram
Duplexer PCA diagram
FSR diagram
Internal print quality test pages
Print quality troubleshooting page
Print quality assessment page
Print the Configuration Page
Service page
Clean the paper path
Print-quality troubleshooting tools
Repetitive image defects
Calibrate the product
Control panel menus
Setup Menu
HP Web Services menu
Reports menu
Quick Forms menu
Fax Setup menu
System Setup menu