Konica-Minolta bizhub 165 Error Codes List page 1 from 3

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  • Code: C0211
  • Description: Bypass tray lift-up failure • When a print cycle is completed, a jam is fixed, or the power switch is turned ON, if the bypass lift sensor (PS4) does not change from the unblocked to blocked condition after the lapse of a given period of time after the bypass pick-up solenoid (SD1) is turned ON, the machine retries the depressing motion. This trouble code is displayed if the PS4 is not blocked after the retry. • While the bypass lift sensor (PS4) is blocked, if the PS4 is not unblocked after the lapse of a given period of time after the bypass pick-up solenoid (SD1) is turned ON, the machine retries the lifting motion. • This trouble code is displayed if the PS4 is not unblocked after the retry.
  • Causes: Bypass lift sensor (PS4) Bypass pick-up solenoid (SD1) Main motor (M1) Printer control board (PRCB)
  • Remedy: 1 Check the connector between M1-PRCB CN6 for proper connection and correct as necessary. 2 Check M1 for correct drive coupling and correct as necessary. 3 Check the connector between PS4-relay CN6-PRCB CN8 for proper connection and correct as necessary. 4 Check the connector between SD1-relay CN4-relay CN6-PRCB CN8 for proper connection and correct as necessary. 5 PS4 I/O check, sensor check. PRCB CN8-8 (ON) 11-E 6 M1 operation check. PRCB CN6-7 (LOCK) 9-D 7 SD1 operation check. PRCB CN8-12 (REM) 11-E 8 Change PRCB.
  • Code: C2351
  • Description: Suction fan motor malfunction • The fan lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.
  • Causes: Suction fan motor (FM5) Printer control board (PRCB)
  • Remedy: 1 Check the connector between FM5-relay CN13-PRCB CN14 for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM5 operation check. PRCB CN14-2(REM) 3-E 4 Change PRCB.
  • Code: C2557
  • Description: Abnormally low T/C ratio • The T/C ratios detected by the TCR sensor board (TCRSB) are below the threshold for the detection of abnormally low T/C ratio for three successive times. However, if a toner empty condition is detected, this abnormality is not detected.
  • Causes: TCR sensor board (TCRSB) Printer control board (PRCB)
  • Remedy: 1 Check to see if developer is available. 2 Check the connector between TCRSB-relay CN14-PRCB CN10 for proper connection and correct as necessary. 3 Change TCRSB. 4 Change PRCB.
  • Code: C2558
  • Description: Abnormally high T/C ratio • The T/C ratios detected by the TCR sensor board (TCRSB) are above the threshold for the detection of abnormally high T/C ratio for three successive times. • The connector between TCRSB to PRCC is disconnected.
  • Causes: TCR sensor board (TCRSB) Printer control board (PRCB)
  • Remedy: 1 Check to see if developer is available. 2 Check the connector between TCRSB-relay CN14-PRCB CN10 for proper connection and correct as necessary. 3 Change TCRSB. 4 Change PRCB.
  • Code: C255C
  • Description: TCR sensor adjustment failure . When [SERVICE MODE] - [FUNCTION] - [TCR AUTO ADJUST] is performed, the difference between the TCR sensor output voltage determined by TCR AUTO ADJUST and the standard voltage is greater than the given value
  • Causes: TCR sensor board (TCRSB) Printer control board (PRCB)
  • Remedy: 1 Check to see if developer is available. 2 Check the connector between TCRSB-relay CN14-PRCB CN10 for proper connection and correct as necessary. 3 Change TCRSB. 4 Change PRCB.
  • Code: C2702
  • Description: Abnormal image transfer voltage • The image transfer voltage remains more than 100 V continuously for a given period of time while the drum remains stationary.
  • Causes: Transfer roller unit High voltage unit (HV1) Printer control board (PRCB)
  • Remedy: 1 Check the transfer roller unit for installation. 2 Change HV1. 3 Change PRCB.
  • Code: C3451
  • Description: Warming-up failure • The surface temperature of the fusing roller does not reach a given level even after the lapse of a given period of time during a warm-up cycle.
  • Causes: Fusing unit Right door switch (SW2) DC power supply (DCPU) Printer control board (PRCB)
  • Remedy: 1 Check the fusing unit for correct installation. 2 Check the open/close operation of the right door. 3 Check the fusing unit, DCPU and PRCB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change PRCB. 6 Change DCPU.
  • Code: C3751
  • Description: Fusing failure (abnormally high fusing temperature 1) • The temperature detected by the thermistor/1 (TH1) remains higher than a given temperature for a given period of time.
  • Causes: Fusing unit Right door switch (SW2) DC power supply (DCPU) Printer control board (PRCB)
  • Remedy: 1 Check the fusing unit for correct installation. 2 Check the open/close operation of the right door. 3 Check the fusing unit, DCPU and PRCB for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change PRCB. 6 Change DCPU.