Sc500 (Paper Feed And Fusing) - Ricoh Aficio MP171 Field Service Manual

SC No. Level
SC498-00 C

SC500 (Paper Feed and Fusing)

SC No. Level
SC508-00 B
Error Name/Error Condition/Major Cause/Solution
Temperature/humidity Sensor error
• Temperature Sensor output error: Out of range between 0.76 V and
2.90 V
• Humidity Sensor output error: 2.4 V or more
• Unmounted Sensor (Unset connector or broken wire)
• Failed Sensor
• Turn the main power OFF and then ON.
• Check that the connector is set.
• Set the sensor.
• Replace the Sensor.
• Replace the connector.
Error Name/Error Condition/Major Cause/Solution
By-pass bottom plate operation error
The signal from the by-pass bottom plate position Sensor has not
changed (that is, the signal has not changed from ON to OFF or vice
versa) for 4 seconds or more after the start of reverse Paper Feed Unit
rotation.
If the error is detected three times in succession, the appropriate SC
number is displayed on the operation panel unit.
• By-pass bottom plate Sensor connector disconnected or other error
• By-pass bottom plate Sensor feeler stuck or other error
• Replace the by-pass bottom plate Sensor feeler.
• Check and replace the by-pass bottom plate Sensor connector
connection.
• Replace the Paper Feed Motor.
• Replace the harness.
• Replace the BCU.
Service Call
125