Konica Minolta bizhub C200 Service Manual page 386

Field Service Ver. 2.0 Dec. 2008
Code
C2151 Secondary transfer roller
pressure welding alienation
C2152 Transfer belt pressure welding
alienation
C2164 PC charge malfunction
C2253 Color PC motor's failure to turn • The motor lock signal remains HIGH for a predeter-
C2254 Color PC motor's turning at
abnormal timing
C225D Color dev. unit engagement/
disengagement failure
C2451 Release new transfer belt unit • A new installation is not detected when a new trans-
C2551 Abnormally low toner density
detected cyan TCR sensor
C2552 Abnormally high toner density
detected cyan TCR sensor
Item
• During a retraction operation of the 2nd image trans-
fer 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 trans-
fer roller, the 2nd image transfer welding alienation
sensor cannot detect the 2nd image transfer roller at
its pressed position 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 cannot detect the
transfer belt at its retracted position within a prede-
termined period of time after the transfer belt retrac-
tion clutch is turned ON.
• During a pressure operation of the transfer belt, the
transfer belt retraction sensor cannot detect the
transfer belt at its pressed position within a predeter-
mined 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 predetermined period of time.
mined continuous period of time while the motor is
turning.
• The motor lock signal remains LOW for a predeter-
mined 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 pre-
determined period of time after the disengagement
operation is started by the color dev. unit engaged
motor.
fer cleaner unit (image transfer belt unit) is installed.
• TC ratio in the developing machine, which is deter-
mined by toner replenishing amount control mecha-
nism, is 4 % or less for a given number of times
consecutively.
• TC ratio in the developing machine, which is deter-
mined by Toner replenishing amount control mecha-
nism, is 11 % or more for a given number of times
consecutively.
• When the connector of the TCR sensor is discon-
nected.
17. Malfunction code
Detection timing
Rank
B
B
B
B
B
B
B
B
B
345