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HP Color LaserJet Pro M377/M452/M477 series repair manual

M5H23A Repair Manual View Repair Manual

Table of Contents

Certificates of volatility
Solve problems
Theory of operation
Basic operation
Certificates of volatility
Clean the printer
Clear paper jams
Document feeder system
Engine laser/scanner system
Engine pickup, feed, and delivery system
Engine-control system
Fax functions and operation (fax models only)
For additional service and support
For additional service and support
Formatter-control system
Input accessories
Prevent paper jams
Scanning and image capture system
Service mode functions
Solve connectivity problems
Solve email problems
Solve fax problems (fax models only)
Solve image quality problems
Solve paper-handling problems
Solve performance problems
Tools for troubleshooting
Troubleshooting process
Update the firmware
Advanced configuration with HP Embedded Web Server (EWS) and HP Device Toolbox (Windows)
Advanced control language (ACL) overview
Auto On / Auto Off mode
Cannot connect to the email server
Change the fax speed
Checklist for solving fax problems
Clean the pickup and separation rollers
Clean the pickup rollers and separation pad in the document feeder
Clean the scanner glass strip and platen
Clean the touchscreen
Clear paper jams in the document feeder (M477 models only)
Clear paper jams in the duplexer (duplex models)
Clear paper jams in the output bin
Clear paper jams in the rear door and the fuser area (simplex models)
Clear paper jams in Tray 1
Clear paper jams in Tray 2
Computer and network security features
Control panel
Control panel checks
Control panel menus
Control panel message document (CPMD)
Determine the problem source
Distinctive ring function
Document feeder simplex operation
Duplexing unit
Engine-control unit
Experiencing frequent or recurring paper jams?
Fax by using voice over IP (VOIP) services
Fax card in the fax subsystem
Fax error messages on the control panel
Fax logs and reports
Fax page storage in flash memory
Fuser control
Image-formation system
Improve print quality
Individual component diagnostics
Input/output (I/O)
Intermediate transfer belt (ITB) unit
Jam detection/prevention
Laser/scanner failure detection
Low end data model (LEDM) overview
Low-voltage power supply
Method one: Update the firmware using the control panel
Method two: Update the firmware using the Firmware Update Utility
Motors, clutches, and solenoids
Output is curled or wrinkled
Paper does not feed from Tray 2
Paper jam locations
Perform a fax diagnostic test
Photo sensors and switches
Power subsystem
Print a cleaning page
Print quality troubleshooting guide
Printer does not pick up paper or misfeeds
Printer feeds incorrect page size
Printer job language (PJL)
Printer management language (PML)
Printer pulls from incorrect tray
Printer resets
Printer will not duplex or duplexes incorrectly
PSTN operation
Receive faxes when you hear fax tones
Secondary service menu
Sequence of operation
Service menu
Set the fax-error-correction mode
Sleep delay
Solve general fax problems
Solve problems checklist
Solve problems receiving faxes
Solve problems sending faxes
Solve USB connection problems
Solve wired network problems
Solve wireless network problems
The fax subsystem
Toner cartridges
Tray 1 (multipurpose)/Tray 2 (base printer)
Tray 3
Tray 3 jam detection
Troubleshoot fax codes and trace reports
Use fax on a DSL, PBX, or ISDN system
Validate the LDAP gateway (Windows)
Validate the SMTP gateway (Windows)
Walk-up USB

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