Oki C9850 Maintenance Manual page 214

(A)
• NO [NG CALIBRATION LEFT/RIGHT] display
• YES
• NO
• NO
• NO
• NO
• NO [DYNAMICRANGE LEFT/RIGHT] display
• YES
• NO
• NO
• NO
(B)
43627911TH Rev. 3
Is the color drift sensor cover dirty?
YES Cleaning defect of the surface of the sensor cover by the clean-
ing blade on the rear of the shutter. Replace the shutter and
sensor cover then restore the cleaning performance.
Check the S2Z PCB (Color Drift Sensor PCB) connector, S2V PCB (engine
PCB) CSNS, power connector and the connector connected with Sensor-
Right Assy connection. Has operation been restored after checking con-
nection?
YES END
Replace the S2Z PCB. Has operation been restored?
YES END
Replace the engine PCB. Has operation been restored?
YES END
Replace the S2Z PCB, and Engine PCB connection cable. Has operation
been restored?
YES END
Is the color drift sensor cover dirty?
YES Cleaning defect of the surface of the sensor cover by the clean-
ing blade on the rear of the shutter. Replace the shutter and
sensor cover then restore the cleaning performance.
Is the shutter open/close operation abnormal?
• YES Replace the shutter. Has operation been restored?
YES END
• NO Replace the shutter open/close solenoid. Has operation been re-
stored?
YES END
Replace the belt unit. Has operation been restored?
YES END
Replace the ID unit. Has operation been restored?
YES END
Oki Data CONFIDENTIAL
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