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HP LaserJet 1200 series - Printer Control Panel Overview

HP LaserJet 1200 series
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EN
Chapter contents 129
6
Troubleshooting
Chapter contents
Basic troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130
Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Control panel light messages . . . . . . . . . . . . . . . . . . . 132
Fatal error secondary messages . . . . . . . . . . . . . . . .135
Checking the toner cartridge . . . . . . . . . . . . . . . . . . .137
Solving image-quality problems . . . . . . . . . . . . . . . . .138
Solving paper-feed problems . . . . . . . . . . . . . . . . . . . . . . . .146
Solving print paper-feed problems . . . . . . . . . . . . . . .146
Solving copying and scanning paper-feed problems .148
Functional checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .149
Engine test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Half self-test functional check. . . . . . . . . . . . . . . . . . . 150
Drum rotation functional check. . . . . . . . . . . . . . . . . . 151
Heating element check. . . . . . . . . . . . . . . . . . . . . . . . 152
High-voltage power supply check. . . . . . . . . . . . . . . . 153
Paper path check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Service mode functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
NVRAM initialization/cold reset . . . . . . . . . . . . . . . . . 156
PJL software commands . . . . . . . . . . . . . . . . . . . . . . 156
Troubleshooting tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Internal reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Repetitive image defect ruler . . . . . . . . . . . . . . . . . . . 161
Main wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .162
Locations of connectors . . . . . . . . . . . . . . . . . . . . . . . 164
Locations of LEDs, jumpers, and switches. . . . . . . . . 165

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