Troubleshooting Guide
• Remove the NVRAM from the original engine control board and install it on the new one when you
replace the engine control board.
Blank Print
Symptom
Possible cause
Necessary actions
No image is printed.
Defective LDU
Replace the LDU.
Defective PCU
Replace the PCU.
Defective transfer belt unit
Replace the transfer belt unit.
Incorrect action of transfer roller
Check the guide and the transfer
roller.
Defective high voltage supply
board
Replace high voltage supply
board 1 or 2.
Defective engine board (EGB)
Replace the engine board (EGB).
All-black Print
Symptom
Possible cause
Necessary actions
All the paper is black.
Incorrectly installed PCU
Install the PCU correctly.
Defective PCU
Replace the PCU.
Defective high voltage supply
board
Replace high voltage supply
board 1 or 2.
Defective LDU
Replace the LDU.
Defective engine board (EGB)
Replace the engine board (EGB).
Defective main board
Replace the main board.
4. Troubleshooting
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Содержание G-P3
Страница 1: ...Model G P3 Machine Code G190 SERVICE MANUAL January 2008 Subject to change...
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Страница 77: ...11 Harness guide C x 2 12 Drive unit D x 6 x 16 3 Replacement and Adjustment 76 3...
Страница 91: ...3 Replacement and Adjustment 90 3...
Страница 137: ...LEDs No LEDs are used for this model except for the Network Interface 4 Troubleshooting 136 4...
Страница 337: ...5 Service Tables 336 5...
Страница 411: ...MEMO 410...
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