Konica Minolta bizhub C353 Service Manual page 534

Field Service Ver. 3.0 Jan. 2008
Code Item
C2151 Secondary transfer roller
pressure welding alien-
ation
C2152 Transfer belt pressure
welding alienation
C2164 PC charge malfunction
C2253 Color PC motor's failure to
turn
C2254 Color PC motor's turning
at abnormal timing
C225D Color dev. unit engage-
ment/disengagement
failure
C2351 K toner suction fan
motor's failure to turn
C2451 Release new transfer belt
unit
Detection timing
• During a retraction operation of the 2nd
image transfer roller, the 2nd image transfer
welding alienation sensor cannot detect the
2nd image transfer roller at its retracted
position within a predetermined period of
time after the 2nd image transfer retraction
motor starts rotating.
• During a pressure operation of the 2nd
image transfer roller, the 2nd image transfer
welding alienation sensor cannot detect the
2nd image transfer roller at its pressed posi-
tion within a predetermined period of time
after the 2nd image transfer retraction motor
starts rotating.
• During a retraction operation of the transfer
belt, the transfer belt retraction sensor can-
not detect the transfer belt at its retracted
position within a predetermined period of
time after the transfer belt retraction clutch is
turned ON.
• During a pressure operation of the transfer
belt, the transfer belt retraction sensor can-
not detect the transfer belt at its pressed
position within a predetermined period of
time after the transfer belt clutch is turned
ON.
• When electrostatic charge output is ON,
electrostatic charge leak detection system
continues to detect leaks for a predeter-
mined period of time.
• The motor lock signal remains HIGH for a
predetermined continuous period of time
while the motor is turning.
• The motor lock signal remains LOW for a
predetermined continuous period of time
while the motor remains stationary.
• The gears remain disengaged after the
lapse of a predetermined period of time
after the engagement operation is started by
the color dev. unit engaged motor.
• The gears remain engaged after the lapse
of a predetermined period of time after the
disengagement operation is started by the
color dev. unit engaged motor.
• The motor lock signal remains HIGH for a
predetermined continuous period of time
while the motor is turning.
• A new installation is not detected when a
new transfer cleaner unit (image transfer
belt unit) is installed.
16. Malfunction code
Trouble iso-
lation com- Rank
pliant unit
⎯
B
⎯
B
⎯
B
⎯
B
⎯
B
⎯
B
⎯
B
⎯
B
489