HP LaserJet 1010 Service Manual - Page 93

Troubleshooting

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Troubleshooting This chapter describes how to isolate and resolve printer problems, image problems, and media problems. Troubleshooting details are provided to resolve problems or to isolate replaceable parts. Basic troubleshooting...82 Control panel power-on functions 84 Power-on Functions: Time Ranges 84 Control Panel Pages...86 Control Panel Pages: Time Ranges 86 Control Panel Lights...87 Control Panel Light Patterns 87 Fatal Errors...91 Image troubleshooting...92 Print cartridge problems 92 Solving image-quality problems 92 Solving paper-feed problems 99 Solving print paper-feed problems 99 Functional checks...103 Half self-test functional check 103 Drum rotation functional check 105 High-voltage contacts check 105 Troubleshooting tools ...107 Repetitive image defect ruler 107 Circuit diagram ...108 Solenoid, sensors, and switches 109 ENWW 81

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Troubleshooting
This chapter describes how to isolate and resolve printer problems, image problems, and
media problems. Troubleshooting details are provided to resolve problems or to isolate
replaceable parts.
Basic troubleshooting
..............................................................................................................
82
Control panel power-on functions
...........................................................................................
84
Power-on Functions: Time Ranges
..................................................................................
84
Control Panel Pages
...............................................................................................................
86
Control Panel Pages: Time Ranges
.................................................................................
86
Control Panel Lights
................................................................................................................
87
Control Panel Light Patterns
.............................................................................................
87
Fatal Errors
.......................................................................................................................
91
Image troubleshooting
............................................................................................................
92
Print cartridge problems
...................................................................................................
92
Solving image-quality problems
.......................................................................................
92
Solving paper-feed problems
..................................................................................................
99
Solving print paper-feed problems
....................................................................................
99
Functional checks
.................................................................................................................
103
Half self-test functional check
.........................................................................................
103
Drum rotation functional check
......................................................................................
105
High-voltage contacts check
...........................................................................................
105
Troubleshooting tools
...........................................................................................................
107
Repetitive image defect ruler
..........................................................................................
107
Circuit diagram
..............................................................................................................
108
Solenoid, sensors, and switches
...........................................................................................
109
ENWW
81