Dark Image Or Black Page - Ricoh G186 Service Manual

The causes and solutions of Bad images

4.2.6 DARK IMAGE OR BLACK PAGE

Description:
The printed image is dark or the page is completely black.
Check and Cause
1. No charge voltage in the engine 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 PBA is Low
state.
4. Case back side the cleaning blade of
print cartridge.
G186
not solved by the above four
instructions.
6. Replace print cartridge.
Solution
1. Check the condition of the connector
which connects the engine board and
HVPS.
2. Clean the high voltage charge terminal.
3. Replace the HVPS if not solved by
steps 1 and 2 above.
4. Replace the LSU or Main PBA.
5. Replace print cartridge.
4-6 SM