Konica Minolta bizhub C250 Service Manual page 466

Field Service Ver. 3.0 Aug. 2006
Code
C2552 Abnormally high toner density
detected Cyan TCR Sensor
C2553 Abnormally low toner density
detected Magenta TCR Sensor
C2554 Abnormally high toner density
detected Magenta TCR Sensor
C2555 Abnormally low toner density
detected Yellow TCR Sensor
C2556 Abnormally high toner density
detected Yellow TCR Sensor
C2557 Abnormally low toner density
detected Black TCR Sensor
C2558 Abnormally high toner density
detected Black TCR Sensor
C2559 Cyan TCR Sensor adjustment
failure
C255A Magenta TCR Sensor
adjustment failure
C255B Yellow TCR Sensor adjustment
failure
C255C Black TCR Sensor adjustment
failure
C2651 Cyan Imaging Unit EEPROM
access error
C2652 Magenta Imaging Unit EEPROM
access error
C2653 Yellow Imaging Unit EEPROM
access error
C2654 Black Imaging Unit EEPROM
access error
Item
• TC ratio in the developing machine, which is
determined by Toner replenishing amount control
mechanism, is 12 % or more for a given number
of times consecutively.
• TC ratio in the developing machine, which is
determined by Toner replenishing amount control
mechanism, is 5 % or less for a given number of
times consecutively.
• TC ratio in the developing machine, which is
determined by Toner replenishing amount control
mechanism, is 12 % or more for a given number
of times consecutively.
• TC ratio in the developing machine, which is
determined by Toner replenishing amount control
mechanism, is 5 % or less for a given number of
times consecutively.
• TC ratio in the developing machine, which is
determined by Toner replenishing amount control
mechanism, is 12 % or more for a given number
of times consecutively.
• TC ratio in the developing machine, which is
determined by Toner replenishing amount control
mechanism, is 5 % or less for a given number of
times consecutively.
• TC ratio in the developing machine, which is
determined by Toner replenishing amount control
mechanism, is 12 % or more for a given number
of times consecutively.
• TCR Sensor automatic adjustment does not func-
tion properly, failing to adjust to an appropriate
value.
• The re-written data, which has been read out,
checked and founded as error, is read out again
and found as error.
• The error was found when reading out the counter
value.
16. Malfunction code
Description Rank
B
B
B
B
B
B
B
B
B
B
B
C
C
C
C
423