Uneven Image Density - Ricoh A219 Service Manual

1.3 UNEVEN IMAGE DENSITY

- Problem -
Uneven image density appears on the copies.
- Possible Cause -
1. Dirty optics
2. Uneven cutout position of the reflectors
3. Dirty corona wires or grid
4. Uneven height of the charge corona wire
- 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 and perform the necessary SP modes
in order (see Section 4 - Service Remarks for details).
The cutout position of the 1st scanner reflectors should not be changed.
Replace the 1st scanner unit.
Is the erase lamp or quenching lamp dirty?
No Yes
Clean the erase lamp or quenching lamp.
Are the corona wires or grid plate dirty?
No Yes
Clean the corona wires, grid plate, and casings.
Replace the charge corona unit.
SM
CÓPIA NÃO CONTROLADA
7-5
CÓPIA NÃO CONTROLADA
COPY QUALITY
A219