Description: Thermistor abnormal or heater disconnection at power ON
Remedy: Note) Before carrying out checks (1) and (2) below, first disconnect the power cord to prevent the danger of electric shock. (1) Check the thermistor. • Are the connectors disconnected? • Are the main and sub (end section) thermistors firmly contacting the heat roller? • Are the harness of the main and sub (end section) thermistors broken? (2) Check the heater lamp and SSR. • Is the heater lamp broken? • Is the heater lamp connector disconnected? • Is the thermostat blown? • Is the SSR connector disconnected? • Are the SSR and switching power supplies damaged? (3) Check the LGC board. • Is connector J326 disconnected? • Check the circuits for breaks, short-circuits or other troubles. • Replace the LGC board. (4) Reset the status counter. Carry out the following after you have repaired the location where error [C41] occurred: • Turn the power ON while holding the 0 and 8 keys down. • Enter “400” from the number key pad, and press the START key. • Overwrite currently displayed status counter 1 or 2 to 0, and press the SET or INTERRUPT key to cancel error [C41]. • Turn the power OFF then back ON, and check the machine enters a normal standby state.
Code: C42
Description: Drum thermistor disconnection
Remedy: (1) Check the Drum thermistor connector (the relay connector is attached to the front frame of Cleaner Unit) • Thermistor broken? • Is the connector disconnected? • Is the Pin disconnected? (2) Check the relay connector J728: the connector for the Cleaner Unit) • Is the connector disconnected or about to become so? • Is the pin disconnected out? (3) Replace the LGC board
Code: C43
Description: Thermistor abnormal during warming-up or at standby after disconnection judgement
Remedy: Carry out the same checks as (1) to (3) in error [C41]. (4) Reset the status counter. • The status counter for error [C43] indicates 4 or 6, and 5, 7 or 9 for error [C44]. Reset these counters to 0 by following the same procedure for error [C41].
Code: C44
Description: Heater abnormal during warming-up or at standby after disconnection judgement
Remedy: Carry out the same checks as (1) to (3) in error [C41]. (4) Reset the status counter. • The status counter for error [C43] indicates 4 or 6, and 5, 7 or 9 for error [C44]. Reset these counters to 0 by following the same procedure for error [C41].
Code: C45
Description: Upper heat roller end thermistor abnormal
Remedy: (1) Check the sub (end section) thermistor. • Are the connectors disconnected? • Is the sub (end section) thermistor firmly contacting the heat roller? • Is the sub (end section) thermistor harness broken? (2) Check the LGC board. • Is connector J326 disconnected? • Check the circuits for breaks, short-circuits or other troubles. • Replace the LGC board. (3) Reset the status counter. Reset status counter 8 to 0 by following the same procedure for error [C41].
Code: C46
Description: Lower heat roller thermistor abnormal at standby
Remedy: (1) Check the thermistor • Are the connectors disconnected? • Is the thermistor firmly contacting the pressure roller? • Is the thermistor harness broken? (2) Checking of the LGC board is the same as with [C41]. (3) Reset the status counter • When [C46] occurs, reset the status counter 3 to 0 by the same procedure as for error [C41].