Ricoh MP C6502SP Field Service Manual page 1444

5. Troubleshooting
Pro/Office
Pro
Pro/Office
Pro
Troubleshooting for Grainy image
Symptom
The image density is not uniform across image areas when printing onto paper that is not smooth
under High-temperature, High-humidity. (See sample below)
Cause
When using paper that has an unsmooth surface, the strength of the electrical field between the ITB
and the concaved areas in the paper weakens, causing low image density only in these areas.
Action
D135/D136:
Increase toner density by following SPs.
1. Change process control target from SP mode (Ideal setting: +0.03 to 1.0 from the default)
SP: 3-620-111 to 114 (Plain : Maximum M/ A : K, C, M, Y)
2. Execute manual process control from SP mode.
SP: 3-011-002 (Manual ProCon: Density Adjustment)
1442
SP No.
SP2-802-001 to [ITB Bias:K:FC] (for each
100 custom paper)
IMSS setting No.
38 Image
Setting: FC: Black
(for each custom paper)
SP Name
0 to 70
IMSS setting
Transfer Current 0 to 70
Value
Value