Konica Minolta bizhub C450 Service Manual page 437

18. Image quality problem
Step Section
Image Process
Adjustment
14
→ D Max Density
(Service Mode)
Image Process
Adjustment
→ Stabilizer →
15
Reset + Stabilizer
(Service Mode)
16
400
Check Item
The problem has been eliminated
through the adjust of D Max.
After the Reset + Stabilizer
sequence has been completed, run
Gradation Adjust; if the problem per-
sists, make adjustments of D Max
Density.
The problem has been eliminated
through the checks of steps up to 15.
Field Service Ver. 1.0 Mar. 2005
Result Action
NO Go to next step.
NO Go to next step.
NO Change Imaging Unit.
→ Change Image Transfer Belt
Unit.
→ Change LPH Assy.
→ Change LED Drive Board.
→ Change Copier Board.
→ Change MFP Control Board
→ Change LPH Unit.
→ Change High Voltage Unit/2
(Developing Bias).
→ Change High Voltage Unit/1
(Image Transfer, Neutralizing).