Konica Minolta bizhub C200 Service Manual page 387

17. Malfunction code
Code
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
C2650 Main backup media access
error
C2651 EEPROM access error (IU C)
C2652 EEPROM access error (IU M)
C2653 EEPROM access error (IU Y)
C2654 EEPROM access error (IU K)
346
Item
• 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.
• 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.
• 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.
• TCR sensor automatic adjustment does not function
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.
• The machine detects that the service EEPROM
board is not loaded in position.
• An error was found when reading or writing data.
• The error was found when reading out the counter
value.
Field Service Ver. 2.0 Dec. 2008
Detection timing
Rank
B
B
B
B
B
B
B
B
B
B
C
C
C
C
C