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HP LaserJet 1000 series - Troubleshooting

HP LaserJet 1000 series
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Q1342-90910 Chapter contents 63
3
Troubleshooting
Chapter contents
Basic troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
LED status lights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Checking the toner cartridge . . . . . . . . . . . . . . . . . . . . 71
Solving image-quality problems . . . . . . . . . . . . . . . . . . 72
Solving paper-feed problems . . . . . . . . . . . . . . . . . . . . . . . . . 77
Functional checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Engine test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Half self-test functional check. . . . . . . . . . . . . . . . . . . . 81
Drum rotation functional check. . . . . . . . . . . . . . . . . . . 82
Heating-element check. . . . . . . . . . . . . . . . . . . . . . . . . 83
High-voltage power supply check. . . . . . . . . . . . . . . . . 84
Paper-path check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Troubleshooting tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87
Repetitive image defect ruler . . . . . . . . . . . . . . . . . . . . 87
Location of ECU Connectors . . . . . . . . . . . . . . . . . . . . 88

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