Toshiba e-STUDIO230L Service Handbook page 509

[C430] Thermistor abnormality after abnormality judgment
[C440] Fuser is abnormal after abnormality judgment
1,2.3. Check the thermistors, Heater and LGC board
Check the above components following the procedures 1, 2 and 3 for [C410].
4. Clear the status counter
Change the current status counter value (08-400) "4" to "0" for [C430] and "5", "7" or "9" to "0" for
[C440], taking the same procedure as that for [C410].
* 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 equipment has become ready: "7"
• The temperature detected by the center thermistor is 230°C or higher: "9"
• The temperature detected by the side thermistor is 230°C or higher: "9"
• The temperature detected by the edge thermistor is 230°C or higher: "9" only during printing.
[C450] Thermistor abnormality during printing
1. Check the edge thermistor
(1) Check if the connector is disconnected.
(2) Check if the edge thermistor is in contact with the surface of the fuser roller properly.
(3) Check if the harness of the edge thermistor is open circuited.
2. Check the LGC board
(1) Check if the connector CN308 is disconnected.
(2) Check if the conductor pattern on the board is short circuited or open circuited.
(3) Replace the LGC board.
3. Clear the status counter
Change the current status counter value (08-400) "6" to "0".
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