Ricoh MP C307 Field Service Manual page 438

SC3xx: Image Processing
No. Type
No. Type
SC370-00 D ID sensor calibration error
The reflection light output voltage of the ID sensor (Vsg_reg) is not adjusted within the target
range.
Upper limit: Default: 4.5 V
Lower limit: Default: 3.5 V
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•
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To check if the issue is resolved:
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Troubleshooting procedure:
1.
2.
3.
4.
5.
6.
7.
432
Details (Symptom, Possible Cause, Troubleshooting Procedures)
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Check the connection of the TD sensor connector.
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Check if the TD sensor harness is connected firmly.
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Replace the TD sensor if any abnormality is found.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Disconnected ID sensor connectors
Dirty or defective ID sensor
Defective image transfer belt
Do Vsg adjustment (SP3-320).
Check the result in SP3-323-001.
Correct: The result is "1"
Incorrect: The result is not "1"
Check all the connectors are firmly connected.
If not, reconnect the connectors. Check if the SC reoccurs by cycling the power off/on. If
the SC reoccurs, go to the next step.
Clean the detecting part of the ID sensor
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Do not wipe with a dry cloth.
If the SC reoccurs, go to the next step.
Check the ID sensor shutter.
If the shutter does not move correctly, replace the shutter solenoid. If the SC reoccurs, go
to the next step.
Replace the drum and/or ITB if the following is found:
Scratches, toner filming, wavy belt, or insufficient cleaning
Replace the ID sensor.
If the SC reoccurs, go to the next step.
Check and connect the related harness if it is disconnected.
Replace the BiCU.