Service manual

FrameMaker Ver5.5E(PC) CF3102/CF2002 TROUBLESHOOTING
02.06.13
T- 3 3
(7) P-21: Color Shift Test Pattern failure
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<Action>
(8) P-22: Color Shift Adjust failure
<Detection Timing>
<Action>
Warning Code Description
P-21
The number of points detected in the CD direction is more or less
than the specified value during CD registration correction.
The number of points detected in the FD direction is more or less
than the specified value during FD registration correction.
Relevant Electrical Parts
Image Transfer Belt Unit
Step Action
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.
Warning Code Description
P-22
The color shift amount is greater than the specified range during
CD registration correction.
The color shift amount is greater than the specified range during FD
registration correction.
The skew correction amount is greater than the specified value.
Relevant Electrical Parts
Regist Sensor 1 (UN20) Regist Sensor 2 (UN21)
Step Action
1
Check the LED retraction lever for locked position and, if there is any faulty
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.
3
Check the Vertical Transport Guide for installed position and correct as neces-
sary.