Reinstall the pickup assembly ........................................................................... 88
Pickup solenoid .................................................................................................................. 90
Remove the pickup solenoid ............................................................................. 90
Engine controller PCA ....................................................................................................... 94
Remove the engine controller PCA ................................................................... 94
Reinstall the engine controller PCA .................................................................. 98
2 Solve problems ........................................................................................................................................... 101
Solve problems checklist .................................................................................................................. 102
Troubleshooting process .................................................................................................................. 105
Determine the problem source ....................................................................................... 105
Power subsystem ............................................................................................................ 106
Power-on checks ............................................................................................. 106
Tools for troubleshooting .................................................................................................................. 107
Individual component diagnostics .................................................................................... 107
Engine diagnostics .......................................................................................... 107
Engine-test button .......................................................................... 107
Components tests ........................................................................................... 108
Drum rotation functional check ...................................................... 108
Half self-test functional check ......................................................... 108
Diagrams ......................................................................................................................... 109
Plug/jack locations .......................................................................................... 109
HP LaserJet Professional M1130 MFP series ................................ 109
HP LaserJet Professional M1210 MFP series ................................ 110
Location of connectors .................................................................................... 111
Locations of major components ...................................................................... 112
General timing charts ...................................................................................... 115
General circuit diagram ................................................................................... 116
Internal print-quality test pages ........................................................................................ 117
Cleaning page ................................................................................................. 117
Configuration page .......................................................................................... 118
Print-quality troubleshooting tools .................................................................................... 119
Repetitive defect ruler ..................................................................................... 119
Interpret control-panel light patterns (HP LaserJet Professional M1130 MFP series
only) ................................................................................................................................. 120
Interpret control-panel messages (HP LaserJet Professional M1210 MFP series
only) ................................................................................................................................. 123
Control-panel message types ......................................................................... 123
Control-panel messages ................................................................................. 123
Clear jams ........................................................................................................................................ 126
Common causes of jams ................................................................................................. 126
Jam locations ................................................................................................................... 127
Clear jams from the document feeder (HP LaserJet Professional M1210 MFP series
only) ................................................................................................................................. 128
ENWW vii
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