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February 2002 © TOSHIBA TEC 4 - 55 FC-210/310 TROUBLESHOOTING
[CE2] Image quality sensor abnormal (no pattern level abnormal)
1. Check that the transfer belt unit is fully raised.
2. Check that the transfer/transport unit is securely inserted.
3. Check for any abnormal stain, large flaw or break on the transfer belt surface.
4. Check that the drum and transfer belt are operating. If abnormal, correct any mechanical
problem.
Is any of the connectors J113, J114, J115,J119 or J123 on the LGC board disconnected?
Is the connector J182 on the IMC board disconnected?
Is the harness between the LGC board and the IMC board open-circuited?
Is the connector of the image quality sensor disconnected or stained?
Is the harness between the LGC board and the image quality sensor open-circuited?
Is the main high-voltage transformer connector disconnected?
Is the harness between the LGC board and the main high-voltage transformer open-circuited?
Is the transfer transformer connector disconnected?
Is the harness between the LGC board and the transfer transformer open-circuited?
Is any of the high-voltage contact points of the transfer belt unit in faulty contact? Is any contact
points stained?
Is the harness of the main high-voltage transformer or the transfer transformer disconnected or
open-circuited?
Reconnect the connector. Replace the harness. Clean the connector or contact
point. Correct the contact point.
Is LED (D17) on the LGC board lit? Is the output voltage from the 12V-power supply normal?
Check the power supply system, and replace the switching power supply.
1. Replace the image quality sensor.
2. Replace the LGC board.
3. Replace the IMC board.
YES
NO
NO
YES