Sc497-00 - Ricoh MP 305 Plus Field Service Manual

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 to see if the SC recurs.
2. Install the image transfer unit again.
When installing, make sure that the static charge eliminator and the junction plate spring are
not bent, and that they are properly connected to the main machine's frame.
3. Replace the transfer unit.
4. Reconnect the CN108 connector on the BiCU.
5. Reconnect the CN800 connector and T4 of the HVPS.
6. Replace the HVPS.
7. Replace the BiCU.
8. Replace the transfer output harness of the HVPS.

SC497-00

Error Name
Internal Temperature Sensor Error
Type
C
Symptoms
This SC is detected when the internal temperature sensor output is 0.56V or less, or 3.0V or more.
Possible Causes
• The internal temperature sensor is not installed properly (connector is loose or damaged).
• The internal temperature sensor is malfunctioning.
Troubleshooting Procedures
1. Turn OFF then ON the main power, and see if the SC recurs.
2. Check the connectors of the internal temperature sensor and the BiCU (check for
loose connections).
3. Replace the internal temperature sensor.
SC498-00
Error Name
Temperature/Humidity Sensor Error
SC 4xx
407