Service manual
FrameMaker Ver5.5E(PC) CF3102/CF2002 TROUBLESHOOTING
02.06.13
T- 3 3
(7) P-21: Color Shift Test Pattern failure
<Detection Timing>
<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.