• Code: 495
• Description: TD sensor Y error • The TD sensor for a color determines that no developer is in the development unit at TD sensor initialization. • The TD sensor for a color does not detect a normal output from the development unit during printing.
• Causes: • No developer in the development unit • Agitation auger defective
• Remedy: 1. Check or reinstall developer in the development unit. 2. Replace the development unit.

• Code: 496-011 ... 496-013
• Description: -011 C MUSIC sensor: Front LED adjustment error -012 C MUSIC sensor: Center LED adjustment error -013 C MUSIC sensor: Rear LED adjustment error The LED adjustment for the front, center or rear MUSIC sensor fails at the Vsg adjustment.
• Causes: • ID/MUSIC sensor unit shutter defective • Harness of sensor unit disconnected or broken • Front, center or rear MUSIC sensor defective
• Remedy: 1. Check the harness and connection. 2. Replace the ID/MUSIC sensor unit.

• Code: 496-014 ... 496-016
• Description: -014 C MUSIC sensor: Front patterns error 1 -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.
• Causes: • Sensor harness disconnected or broken • LD board(s) defective • Image transferring to the ITB insufficient
• Remedy: 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).

• Code: 496-017 ... 496-019
• Description: -017 C MUSIC sensor: Front patterns error 2 -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.
• Causes: • ITB scratched or broken • Dust on the ITB
• Remedy: 1. Clean the ITB. 2. Replace the ITB.

• Code: 496-020 ... 496-022
• Description: -020 C MUSIC sensor: Y color shift error 1 -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
• Causes: • ITB scratched or broken • Dust on the ITB • New laser unit installed • Process control execution incorrect
• Remedy: 1. Execute the manual process control with SP3820-001. 2. Clean or replace the ITB. 3. Replace the laser unit YM or CK.

• Code: 496-023 ... 496-025
• Description: -023 C MUSIC sensor: Y color shift error 2 -024 C MUSIC sensor: M color shift error 2 -025 C MUSIC sensor: C color shift error 2 The yellow, magenta or cyan image shifting in the main-scan direction exceeds the capable correction range in the process control
• Causes: • ITB scratched or broken • Dust on the ITB • New laser unit installed • Process control incorrect
• Remedy: 1. Execute the manual process control with SP3820-001. 2. Clean or replace the ITB. 3. Replace the laser unit YM or CK.

• Code: 496-026 ... 496-028
• Description: -026 C MUSIC sensor: Y magnification correction error 1 -027 C MUSIC sensor: M magnification correction error 1 -028 C MUSIC sensor: C magnification correction error 1 The magnification correction in the main-scan for yellow, magenta or cyan image exceeds the capable range in the process control.
• Causes: • ITB scratched or broken • Dust on the ITB • New laser unit installed • Process control execution incorrect
• Remedy: 1. Execute the manual process control with SP3820-001. 2. Clean or replace the ITB. 3. Replace the laser unit YM or CK.

• Code: 496-029 ... 496-031
• Description: -029 C MUSIC sensor: Y magnification correction error 2 -030 C MUSIC sensor: M magnification correction error 2 -031 C MUSIC sensor: C magnification correction error 2 The left and right magnification correction in the main-scan for yellow, magenta or cyan image exceed the capable range in the process control.
• Causes: • ITB scratched or broken • Dust on the ITB • New Laser unit installed • Process control execution incorrect
• Remedy: 1. Execute the manual process control with SP3820-001. 2. Clean or replace the ITB. 3. Replace the laser unit YM or CK.