P-21: Color Shift Test Pattern Failure; P-22: Color Shift Adjust Failure - Minolta CF2002 Service Manual

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P-21: Color Shift Test Pattern failure

<Detection Timing>
Warning Code
• The number of points detected in the CD direction is more or less
P-21
• The number of points detected in the FD direction is more or less
<Action>
Image Transfer Belt Unit
Step
1 Wipe clean the surface of the Transfer Belt with a soft cloth, if it is dirty.
2 Change the Image Transfer Belt Unit if the Transfer Belt is damaged.
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P-22: Color Shift Adjust failure

<Detection Timing>
Warning Code
• The color shift amount is greater than the specified range during
P-22 • The color shift amount is greater than the specified range during FD
• The skew correction amount is greater than the specified value.
<Action>
Regist Sensor 1 (UN20)
Step
Check the LED retraction lever for locked position and, if there is any faulty
1
condition evident, slide out the IU and reinstall it in position.
2 Reinstall or reconnect UN20 or UN21 if it is installed or connected improperly.
Check the Vertical Transport Guide for installed position and correct as neces-
3
sary.
than the specified value during CD registration correction.
than the specified value during FD registration correction.
Relevant Electrical Parts
CD registration correction.
registration correction.
Relevant Electrical Parts
T-33
Description
Action
Description
Regist Sensor 2 (UN21)
Action