Ricoh FT 4015 Service Manual page 192

COPY QUALITY
- Action -
Is the charge corona wire cleaner knob fully inserted?
Is the cleaner mechanism working properly?
Yes No
Fully insert the knob or fix the cleaner pad bracket.
Are the charge and transfer corona units correctly installed?
Yes No
Install the charge and transfer corona units correctly.
Are the charge and transfer corona wires broken?
No Yes
Replace the corona wires.
Is leakage occurring in the endblocks or receptacles?
No Yes
Replace the defective parts.
Are the imaging unit drive gears worn or broken?
No Yes
Replace the drive gears.
Check CN102-4 and 102-5 (Charge/Transfer trigger lines)
1) If the signal stays HIGH after the
main board.
2) If the charge or transfer corona does not turn on even if the signal
changes to LOW, replace the high voltage supply board.
If there is no problem with the signal lines, replace the drum if the sensitivity
does not recover even when the drum is not exposed to light.
key is pressed, replace the
7-2
20 December 1996