HP LaserJet 4v/mv Service Manual - Page 137
Troubleshooting
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7 Troubleshooting Chapter Contents Preliminary Troubleshooting 7-3 Paper Path and Components 7-4 Printer Message Troubleshooting 7-5 Priority of Errors 7-5 Printer Status Messages 7-6 Service and Error Messages 7-11 Clearable Warnings 7-15 Image Formation Troubleshooting 7-16 Check the Toner Cartridge 7-16 Faulty Image Examples 7-16 Troubleshooting Checks 7-31 Engine Test 7-31 Engine Test Button Location 7-31 Printing an Engine Test 7-31 Half Self Test Functional Check 7-32 Drum Rotation Functional Check 7-33 High-Voltage Power Supply Check 7-34 Paper Curl 7-35 Troubleshooting Tools 7-36 Repetitive Image Defect Ruler 7-36 Wiring Diagrams 7-37 Troubleshooting 7-1
7
Troubleshooting
Chapter Contents
Preliminary Troubleshooting .
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. 7-3
Paper Path and Components .
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. 7-4
Printer Message Troubleshooting
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. 7-5
Priority of Errors .
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. 7-5
Printer Status Messages .
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. 7-6
Service and Error Messages
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. 7-11
Clearable Warnings
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. 7-15
Image Formation Troubleshooting .
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. 7-16
Check the Toner Cartridge
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. 7-16
Faulty Image Examples
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. 7-16
Troubleshooting Checks
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. 7-31
Engine Test .
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. 7-31
Engine Test Button Location
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. 7-31
Printing an Engine Test .
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. 7-31
Half Self Test Functional Check .
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. 7-32
Drum Rotation Functional Check .
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. 7-33
High-Voltage Power Supply Check
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. 7-34
Paper Curl
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. 7-35
Troubleshooting Tools
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. 7-36
Repetitive Image Defect Ruler .
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. 7-36
Wiring Diagrams .
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. 7-37
Troubleshooting 7-1