Konica Minolta Magicolor 5440 DL - Manual (Page 225)

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