C2557: Atdc Sensor Failure; C255C: Atdc Adjustment Failure; C2654: Eeprom Failure; C2702: Abnormal Image Transfer Voltage - Konica Minolta bizhub 250 Service Manual

19. Malfunction code
19.3.10

C2557: ATDC Sensor Failure

19.3.11

C255C: ATDC Adjustment Failure

ATDC Sensor (UN2)
Step
Check the UN2 connector for proper connection and
1
correct as necessary.
Remove the Developing Unit from the IU, and then
2
replace UN2.
3 Run F8.
4 Change PWB-A
5 Change PU1
19.3.12

C2654: EEPROM Failure

Mechanical Control Board (PWB-A)
Step
Disconnect and then connect the power cord. Turn
1 OFF the Main Power Switch, wait for 10 sec. or
more, and turn ON the Main Power Switch.
Check the EEPROM on the Mechanical Control
2 Board for proper connection, and correct as neces-
sary.
3 Change PWB-A
4 Change EEPROM
19.3.13

C2702: Abnormal Image Transfer Voltage

Transfer Roller
Step
1 Check the installation of the Transfer Roller.
2 Change HV1
242
EDNord - Istedgade 37A - 9000 Aalborg - telefon 96333500
Relevant Electrical Parts
Mechanical Control Board (PWB-A)
Power Supply Unit (PU1)
Action
Relevant Electrical Parts
Action
Relevant Electrical Parts
High Voltage Unit (HV1)
Action
Field Service Ver. 1.0 Aug. 2005
WIRING DIAGRAM
Location
Control Signal (Electrical
Component)
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WIRING DIAGRAM
Location
Control Signal (Electrical
Component)
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WIRING DIAGRAM
Location
Control Signal (Electrical
Component)
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