Ricoh Pro 8300S - Paper Transfer Roller Unit Error Detection (Leak); Sc450-01

1.SC Codes
73
SC450-01
Error Name
Paper Transfer Roller Unit Error Detection (Leak)
Pattern
D
Error Condition
Output of transfer power pack is abnormal (discharge current is leaking).
Major Cause
 Paper transfer bias roller (repulsion roller) is worn out.
 Image transfer belt is scratched, dirty, or broken.
 There are foreign particles on the paper transfer bias roller (repulsion roller), or it is dirty.
 Paper transfer bias roller (repulsion roller) and transfer power pack are not properly connected.
 IOB is not properly connected.
 Paper transfer roller is defective.
 Harness connected to the transfer power pack is defective.
 Transfer power pack board is defective.
 Harness connected to the IOB is defective.
 IOB is defective.
Solution
1. Check if the image transfer belt is scratched or dirty, and if it is broken.
 If it is scratched or dirty, replace the belt.
 If it is dirty, clean the belt.
2. Check the paper transfer bias roller (repulsion roller).
If there are foreign objects on the roller or it is dirty, clean the roller.
3. Check the harness between the transfer power pack and the paper transfer bias roller (repulsion
roller) (connector loose or disconnected)
4. Check the harness of the IOB (connector loose or disconnected)
5. Check the paper transfer roller.
If there are foreign objects on the roller or it is dirty, clean the roller.
If there are scratches on the roller, replace it.
6. Replace the transfer power pack harness.
7. Replace the transfer power pack board.
8. Replace the IOB harness.
9. Replace the IOB.