Service manual

Symptoms, Causes, and Solutions of Bad Images
SM 4-7 M000/M009
Trouble-
shooting
4.2.6 DARK IMAGE OR BLACK PAGE
Description:
The printed image is dark.
Symptom and Cause Solution
1. No charge voltage in the main board.
2. Charge voltage is not turned on due to
bad contacts between power supply in
the side of the print cartridge and
charge terminal of HVPS.
3. VD0 signal of the main board is Low
state.
1. Check the condition of the connector
which connects the main board and
HVPS.
2. Clean the high voltage charge terminal.
3. Replace the HVPS if not solved by
step1 and 2 above.
4. Replace the LSU Unit or Main Board.
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA