Ricoh Pro C901 Technical Bulletin page 47

Model:
Aries-P1.5/C1.5
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
1. Check the harness and connection.
2. Replace the ID/MUSIC sensor unit.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
496 C MUSIC sensor: Front patterns error 1
-014
-015 C MUSIC sensor: Center patterns error 1
-016 C MUSIC sensor: Rear patterns error 1
The front, center or rear MUSIC sensor detects the less number
of the MUSIC patterns on the ITB.
1. Check the harness and connection.
2. Replace the laser unit(s).
Note: If one of SC250 to SC257 has occurred before, you can tell
which is the problem laser unit (YM or CK).
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
496 C MUSIC sensor: Front patterns error 2
-017
-018 C MUSIC sensor: Center patterns error 2
-019 C MUSIC sensor: Rear patterns error 2
The front, center or rear MUSIC sensor detects too many MUSIC
patterns on the ITB.
1. Clean the ITB.
2. Replace the ITB.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
496 C MUSIC sensor: Y color shift error 1
-020
-021 C MUSIC sensor: M color shift error 1
-022 C MUSIC sensor: C color shift error 1
The yellow, magenta or cyan image shifting in the sub-scan
direction exceeds the capable correction range during process
control
T
echnical
ID/MUSIC sensor unit shutter defective
Harness of sensor unit disconnected or broken
Front, center or rear MUSIC sensor defective
Sensor harness disconnected or broken
LD board(s) defective
Image transferring to the ITB insufficient
ITB scratched or broken
Dust on the ITB
ITB scratched or broken
Dust on the ITB
New laser unit installed
Process control execution incorrect
B
ulletin
Date:
17-Feb-11
PAGE: 11/44
No.:
RM077018