Sharp AR-651 Service Handbook page 213

[C43] Abnormal thermistor after abnormality judgment
[C44] Abnormal fuser after abnormality judgment
1,2.3. Check the thermistors, IH control board, IH coil and LGC board
Check the above components following the procedure 1, 2 and 3 for [C41].
4. Clear the status counter
Change the current status counter value (08-400) "4" to "0" for [C43] and "5", "7" or "9" to "0" for [C44], taking
the same procedure as that for [C41].
* The status counter value is as follows in the following cases. Change them to "0" respectively.
• The error occurred during warming-up: "4" or "5"
• The error occurred after the machine has become ready: "6"
• The temperature detected by the center thermistor is 230°C or higher: "9"
• The temperature detected by the side thermistor is 270°C or higher: "9"
[C45] Abnormal side thermistor after the copier has become ready
1. Check the side thermistor
(1) Check if the connector is disconnected.
(2) Check if the side thermistor is in contact with the surface of the fuser roller properly.
(3) Check if the harness of the side thermistor is open-circuited.
2. Check the LGC board
(1) Check if the connector J334 is disconnected.
(2) Check if the conductor pattern on the board is short- or open-circuited.
(3) Replace the LGC board.
3. Clear the status counter
Change the current status counter value (08-400) "6" to "0".
5 - 63 AR-651/810 TROUBLE SHOOTING