HP 1200 Service Manual - Page 131
Troubleshooting, contents, NVRAM initialization/cold reset ..156
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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 EN Chapter contents 129