Ricoh FT5535 Service Manual page 196

3.4 UNEVEN IMAGE DENSITY
- Problem -
Uneven image density appears on copies.
- Possible Cause -
1. Dirty optics
2.The exposure adjustment plates are out of positon
3. Dirty drum charge roller
4. Improper function of cross mixing in the development unit
- Action -
Does the uneven image area shift when a reduction copy is made?
No Yes
Is the optics section dirty?
No Yes
Clean the optics.
Adjust the exposure adjustment plates on the 1st scanner.
(See Uneven Exposure Adjustment in the Replacement and Adjustment
section.)
Is the erase lamp, quenching lamp, or toner shield glass dirty?
No Yes
Clean the erase lamp, quenching lamp, or toner shield glass.
Clean or replace the drum charge roller.
FSM 6-9 FT5535/4527/4522