Konica Minolta bizhub C360 Service Manual page 645

19. TROUBLE CODE
Code
C3923 Fusing sensor wire breaks
detection
(Pressurizing side)
C4101 Polygon motor rotation
trouble
C4501 Laser malfunction
C5102 Transport motor's
failure to turn
C5103 Transport motor's
turning at abnormal timing
C5351 Power supply cooling fan
motor's failure to turn
C5352 Undetectable
C5353 Undetectable
C5354 Exhaust fan motor's fail-
ure to turn
C5355 Cooling fan motor/3's
failure to turn
C5357 Undetectable
C5370 MFP control board cooling
2
fan motor's failure to turn
C5372 MFP control board CPU
2
temperature failure
C5501 AC signal abnormality
C5601 Engine control
malfunction
590
2
Item
• The maximum value and minimum value of
detected temperature of the pressure roller
thermistor are compared after a lapse of
given time from starting of warm up and the
gap between the value of maximum and
minimum is below or over a given tempera-
ture.
• The pressure heater lights up for a given
period of time consecutively.
• The polygon motor fails to turn stably even
after the lapse of a given period of time after
activating the polygon motor.
• Motor lock signal detects HIGH for a given
period time consecutively during the poly-
gon motor is rotating.
• SOS signal is not detected even after the
lapse of a given period of time after staring
the laser output.
• SOS signal is not detected for a given
period of time during printing or IDC sensor
adjustment.
• The motor lock signal remains HIGH for a
predetermined continuous period of time
while the motor remains stationary.
• The motor lock signal remains LOW for a
predetermined continuous period of time
while the motor remains stationary.
• The fan lock signal remains HIGH for a pre-
determined continuous period of time while
the motor remains stationary.
• The fan lock signal remains HIGH for a pre-
determined continuous period of time while
the motor remains stationary.
• The fan lock signal remains HIGH for a pre-
determined continuous period of time while
the motor remains stationary.
• The fan lock signal remains HIGH for a pre-
determined continuous period of time while
the motor remains stationary.
• Temperature failure of CPU on the MFP
board was detected.
• Signal is not detected for a given period of
interval when AC frequency is measured
with the power switch ON or when fusing
heater is turned ON/OFF.
• Engine control malfunction is detected with
port monitor control.
Field Service Ver. 2.1 Feb. 2012
Detection timing
Trouble iso-
Rank
lation
⎯
A
⎯
B
⎯
B
⎯
B
⎯
B
⎯
B
⎯
B
⎯
B
⎯
C
⎯
C
⎯
C
⎯
C