Gradation Reproduction Failure - Konica Minolta magicolor 5430 DL Service Manual

Image Quality Problems
5.1.6

Gradation reproduction failure

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
1 Toner Cartridge Is the outside dirty?
2 PH Unit
AIDC Sensor/Rt,
3
AIDC Sensor/Lt
4
4036fs4048c0
Check Item
Is the window surface dirty?
Is the sensor dirty?
Has the problem been eliminated
through the checks of steps up to
3?
4-38
Main Unit Field Service
4036fs4049c0
Result Action
YES Clean.
YES Clean.
YES Clean.
Change the Toner Cartridge.
→ Change the PH Unit.
→ Change the AIDC Sensor.
NO
→ Change High Voltage Unit/1.
→ Change High Voltage Unit/2.