Paper Transfer Unit Open/Close Led Always Lit - Ricoh MP C2504 Field Service Manual

6. Troubleshooting
Execute an OUTPUT check without an object (e.g. paper) placed within
the sensor detection range.
Solution:
• Clean the LED.
• Reconnect the connector.
• Replace the LED.
• Replace the Paper Transport IOB.
• Replace the harness.

Paper transfer unit open/close LED always lit

Target Part/SP No.:PTR Open/Close Sensor / SP5-803-028 (PTR Open/Close Sensor)
Execute an INPUT check with an object (e.g. paper) placed within the
sensor detection range
Execute an INPUT check without an object (e.g. paper) placed within
the sensor detection range
Solution:
• Clean the sensor.
• Reconnect the connector.
• Replace the sensor.
• Replace the Paper Transport IOB.
• Replace the harness.
Target Part/SP No.:Paper Transfer Unit Open/Close LED / SP5-804-206 (PTR Open/Close
LED)
Turn OFF the paper transfer unit open/close LED with OUTPUT check
Solution:
• Clean the LED.
• Reconnect the connector.
1042
Cause verification
Cause verification
Cause verification
Problem Judgement
0: Open
Problem Judgement
1: Close
0: Open
Problem Judgement
LED lit