Ricoh MP C307 - Page 436

SC3xx: Image Processing
430
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
• Replace the drum motor (CMY) (SC397)
• Reconnect the connector for the drum motor.
• Replace the harness for the drum motor.
• Replace the BiCU.
• Replace the PCDU.
Image Processing 2: Drum
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC360-01 D TD sensor (Vt high) error 1: Bk
SC360-02 D TD sensor (Vt high) error 1: Cy
SC360-03 D TD sensor (Vt high) error 1: Ma
SC360-04 D TD sensor (Vt high) error 1: Ye
• count is higher than the threshold which detects no developer
• count is lower than the upper/lower target thresholds three consecutive times.
• TD sensor (mu sensor, sensor) failure
• Harness loose or disconnected
• An old PCDU may be installed
Troubleshooting procedure:
1. Check all the related connecters are connected.
If not good, reconnect the connectors. Check if the SC reoccurs by cycling the power
off/on. If the SC reoccurs, go to next step.
2. Check the development unit (e.g. Gear/harness disconnected? Heat protection seal
removed? Using an old PCDU?).
If not good, replace the development unit. If the SC reoccurs, go to the next step.
3.
Check whether the TD sensor is deformed, scratched, damaged or has dust sticking
to it.
If not good, replace the PCDU. If the SC reoccurs, go to the next step.
4. Check the TD sensor harnesses, and the harness between the mainframe and
PCDU.
If not good, replace the harness. If the SC reoccurs, go to the next step.
5. Replace the BiCU.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC361-01 D TD sensor (Vt) upper limit error: Bk
SC361-02 D TD sensor (Vt) upper limit error 1: Cy
SC361-03 D TD sensor (Vt) upper limit error 1: Ma
SC361-04 D TD sensor (Vt) upper limit error 1: Ye
The machine detects that Vt (TD sensor output, SP3-210-001) is higher than the upper limit