0310: Laser Malfunction; 0500: Heating Roller Warm-Up Failure; 0502: Thermistor Open-Circuit Failure; 0503: Thermistor Resistance Failure - Konica Minolta bizhub C25 Service Manual

18. MALFUNCTION CODE
18.4.10

0310: Laser malfunction

PH unit
Step
1 Check the connector between PH unit-
PRCB PJ18 for proper connection and cor-
rect as necessary.
2 Check the connector between PH unit-
MFPB/2 CN15 for proper connection and
correct as necessary.
3 Change PH unit.
4 Change PRCB.
18.4.11

0500: Heating roller warm-up failure

18.4.12

0502: Thermistor open-circuit failure

18.4.13

0503: Thermistor resistance failure

18.4.14

0510: Abnormally low heating roller temperature

18.4.15

0520: Abnormally high heating roller temperature

Fuser unit
Step
1 Check the fuser unit for correct installation
(whether it is secured in position).
2 Check the connector between fuser unit-
PRCB PJ9 for proper connection and cor-
rect as necessary.
3 Check the connector between fuser unit-
DCPU CN2 for proper connection and cor-
rect as necessary.
4 Change fuser unit.
5 Change PRCB.
6 Change DCPU.
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Relevant electrical parts
Action
Relevant electrical parts
Action
Field Service Ver. 1.1 May 2011
Printer control board (PRCB)
MFP board/2 (MFPB/2)
WIRING DIAGRAM
Control signal
-
-
-
-
Printer control board (PRCB)
DC power supply (DCPU)
WIRING DIAGRAM
Control signal
-
-
-
-
-
-
Location (electri-
cal component)
-
-
-
-
Location (electri-
cal component)
-
-
-
-
-
-