Electrostatic discharge .....................................................................................................82
User-replaceable parts .....................................................................................................82
Required tools ...................................................................................................................82
Before performing service .......................................................................................................83
Pre-service procedures ....................................................................................................83
Parts removal order ..........................................................................................................83
Covers......................................................................................................................................84
Left-side cover...................................................................................................................84
Right-side cover.................................................................................................................85
Back cover.........................................................................................................................87
Duplexer tray.....................................................................................................................90
Top cover...........................................................................................................................91
Control panel............................................................................................................................95
Formatter..................................................................................................................................97
Laser/scanner...........................................................................................................................98
Memory-tag-reader assembly..................................................................................................99
Duplex-drive PCA...................................................................................................................101
Fuser......................................................................................................................................103
Fan...................................................................................................................................103
Duplex-drive gears/face-down gears...............................................................................104
Duplex solenoid (SL3) (HP LaserJet 1320 Series printers only).....................................107
Fuser................................................................................................................................108
Interlock assembly.................................................................................................................119
ECU........................................................................................................................................121
Main motor.............................................................................................................................129
Pickup and feed assemblies..................................................................................................131
Transfer roller..................................................................................................................131
Registration assembly.....................................................................................................132
Main gear assembly/tray 2 pickup solenoid...........................................................................133
Print-cartridge door................................................................................................................137
Wireless communications card..............................................................................................139
7 Troubleshooting
Chapter contents....................................................................................................................141
Basic troubleshooting.............................................................................................................143
Paper-handling problems ......................................................................................................146
Paper jam .......................................................................................................................146
Print is skewed (crooked) ...............................................................................................146
More than one sheet of media feeds through the printer at one time ............................146
Printer does not pull media from the media input tray ...................................................147
Printer curled the media .................................................................................................147
Printed media does not exit to the correct path ..............................................................147
Print job is extremely slow ..............................................................................................147
Paper-path troubleshooting....................................................................................................148
Solving print paper-feed problems..................................................................................148
Printed page is different than what appeared on screen ......................................................150
Garbled, incorrect, or incomplete text ............................................................................150
Missing graphics or text, or blank pages ........................................................................150
Page format is different than on another printer .............................................................151
Graphics quality ..............................................................................................................151
Status light patterns ..............................................................................................................152
Fatal error secondary messages...........................................................................................158
Accessory error secondary messages...................................................................................161
Troubleshooting postscript (PS) errors .................................................................................162
Image troubleshooting............................................................................................................163
ENWW v
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