Konica Minolta bizhub C200 Service Manual page 333

17. Malfunction code
Code
C3721 Fusing abnormally high tem-
perature detection
(heating side)
C3723 Fusing abnormally high tem-
perature detection
(pressurizing side)
C3821 Fusing abnormally low temper-
ature detection (heating side)
C3823 Fusing abnormally low temper-
ature detection
(pressurizing side)
C4151 Polygon motor rotation trouble
(C)
C4152 Polygon motor rotation trouble
(M)
C4153 Polygon motor rotation trouble
(Y)
C4154 Polygon motor rotation trouble
(K)
C4551 Laser malfunction (C)
C4552 Laser malfunction (M)
C4553 Laser malfunction (Y)
C4554 Laser malfunction (K)
C5102 Transport motor's failure to
turn
C5103 Transport motor's
turning at abnormal timing
C5351 Power supply cooling fan
motor/1's failure to turn
C5354 Exhaust fan motor's failure to
turn
C5357 Cooling fan motor/1's failure to
turn
C6102 Drive system home sensor
malfunction
C6401 Other troubles of scanner
294
Item
• The heating roller thermistor continues to detect a
temperature higher than a predetermined one for a
predetermined period of time.
• Hard protection signal L is detected continuously
over a predetermined period of time.
• The temperature of the pressure roller continues to
be higher than a predetermined level for a predeter-
mined period of time after a temperature correction.
• The heating roller thermistor continues to detect a
temperature lower than a predetermined one for a
predetermined period of time.
• In the states other than a warm-up operation, a zero
cross signal cannot be detected after the lapse of a
predetermined period of time after the fusing heater
is turned ON or OFF.
• The power supply frequency cannot be detected.
• The temperature of the pressure roller continues to
be lower than a predetermined level for a predeter-
mined period of time after a temperature correction.
• 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 polygon motor is rotat-
ing.
• 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 image stabilization adjustment.
• The motor lock signal remains HIGH for a predeter-
mined continuous period of time while the motor
remains stationary.
• The motor lock signal remains LOW for a predeter-
mined continuous period of time while the motor
remains stationary.
• The fan lock signal remains HIGH for a predeter-
mined continuous period of time while the motor
remains stationary.
• The fan lock signal remains HIGH for a predeter-
mined continuous period of time while the motor
remains stationary.
• The fan lock signal remains HIGH for a predeter-
mined continuous period of time while the motor
remains stationary.
• The home position sensor (PS201) is defective or
the exposure unit operates erratically.
• The scan operation was terminated abnormally
because of a reason except defined trouble.
Field Service Ver. 1.0 Jun. 2008
Detection timing
Rank
A
A
A
A
B
B
B
B
B
B
B
B
B
B
B
B
B
B
B