Sc392-00 - Ricoh MP 305 Plus Field Service Manual

• The HVPS is defective.
• Load-related causes:
• There is a grounding fault when charging, or there is a short circuit with other power
outputs.
• There is not sufficient creeping distance or spatial distance in the charging output path
(including the distance from other power outputs).
• There is abnormal deterioration of the PCU, or excessive current due to a pinhole.
• There is an abnormal gap between the PCU and the charge roller (PCU is defective).
• There is excessive current due to condensation on the PCU.
• The PCU is not installed correctly.
Troubleshooting Procedures
Depending on the machine model, the defective part and whether it can be serviced is different.
Change the order of the steps as necessary.
This SC is detected when processing a printing job. After performing the following steps, it is
necessary to turn OFF then ON the main power in order to resend the job.
1. After turning OFF then ON the main power, print one sheet of paper to see if the SC
recurs.
2. Install the PCU again.
3. Replace the PCU.
4. Reconnect the CN108 connector on the BiCU.
5. Reconnect the CN800 connector and T1 of the HVPS.
6. Replace the HVPS.
7. Replace the BiCU.
8. Replace the harness of the charge roller (output).

SC392-00

Error Name
Developer Set Error
Type
D
Symptoms
A scanning error has occurred with the ID sensor pattern that is generated during initialization.
This SC is detected if the heat protection seal is not removed, or there is no developer when the Vsp
output is 2.5V or more.
SC3xx
403