Konica Minolta bizhub C353P Service Manual page 458

Field Service Ver. 1.0 Oct. 2007
Code Item
C3101 Fusing roller separation
failure
C3201 Fusing motor failure to
turn
C3202 Fusing motor turning at
abnormal timing
C3301 Fusing cooling fan motor/
1 failure to turn
C3302 Fusing cooling fan motor/
2,3 failure to turn
C3421 Fusing heaters trouble
(heating side)
Detection timing
• With the fusing roller being retracted, the
pulse of the fusing roller retraction sensor
does not change even after the specified
period of time has passed after the fusing
retraction motor started rotating.
• With the fusing roller being pressed, the
pulse of the roller retraction sensor does not
change even after the specified period of
time has passed after the fusing retraction
motor started rotating.
• During a pressure operation of the fusing
roller, the fusing roller is not at the pressed
position even after the roller retraction sen-
sor counts the specified number of pulses
after the fusing retraction motor starts rotat-
ing.
• 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 motor lock signal remains HIGH for
a predetermined continuous period of time
while the motor remains stationary.
• The fan motor lock signal remains HIGH for
a predetermined continuous period of time
while the motor remains stationary.
• The temperature detected by the heating
roller thermistor/C does not reach a prede-
termined level after the lapse of a predeter-
mined period of time after the heating roller
fusing heater lamp lights up.
• The difference between the maximum and
minimum temperatures detected by the
heating roller thermistor/C within a predeter-
mined period of time after the start of a
warm-up cycle is below or above a predeter-
mined value.
• The temperature detected after a pressure
level correction remains under a predeter-
mined level even after the lapse of a prede-
termined period of time after the start of the
temperature detection.
• During a warm-up, a zero cross signal can-
not be detected after the lapse of a prede-
termined period of time after the fusing
heater is turned ON or OFF.
20. Malfunction code
Trouble iso-
lation com- Rank
pliant unit
⎯
B
⎯
B
⎯
B
⎯
B
⎯
B
⎯
A
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