• 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].

• Code: C56
• Description: Communication error between PFC and M-CPU
• Remedy: (1) Check the signal patterns (REQ, ACK, RXD, TXD) between IC11 (G/A) and IC21 (PFC) on the LGC board for breaks and short-circuits. (2) Replace the LGC board.

• Code: C57
• Description: Communication error between M-CPU and IPC
• Remedy: (1) Check the circuit patterns mainly on IC50 and IC56 on the LGC board for breaks and shortcircuits. (2) Check the pattern on the IPC board for breaks and short-circuits. (3) Replace the IPC board. (4) Replace the LGC board.

• Code: C58
• Description: Communication error between IPC and the finisher
• Remedy: (1) Make sure that only the specified finisher is attached. (2) Check the pattern on the IPC board for breaks and short-circuits. (3) Check the harness connected to connector J2 on the IPC board for disconnected pins and breaks. (4) Check fuse F5 on the power supply unit to see if it is blown. (5) Check the pattern on the control board inside the finisher for breaks and short-circuits. (6) Check the connectors leading up to the PPC board for disconnected pins and the harness for breaks (7) Replace the IPC board. (8) Replace the LGC board

• Code: C59
• Description: Communication error between M-CPU and L-CPU
• Remedy: (1) Check the harness between the LGC board and the laser unit for disconnection and breaks. (2) Check mainly the IC circuits on the LGC board for breaks and short-circuits. (3) Replace the LGC board. (4) Replace the laser optical unit.