DRAFT
Field Service Ver. 1.0 Feb. 2010
14.4.12
0310: Laser malfunction
PH unit
Step
1
Check the connector between PH unit-
PRCB PJ19 for proper connection and cor-
rect as necessary.
2
Check the connector between PH unit-
MFPB PJ4 for proper connection and cor-
rect as necessary.
3
Change PH unit.
4
Change PRCB.
14.4.13
0500: Heating roller warm-up failure
14.4.14
0502: Thermistor open-circuit failure
14.4.15
0503: Thermistor resistance failure
14.4.16
0510: Abnormally low heating roller temperature
14.4.17
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 PJ26 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.
Relevant electrical parts
Action
Relevant electrical parts
Action
14. MALFUNCTION CODE
Printer control board (PRCB)
MFP board (MFPB)
WIRING DIAGRAM
Control signal
-
-
-
-
Printer control board (PRCB)
DC power supply (DCPU)
WIRING DIAGRAM
Control signal
-
-
-
-
-
-
Location (electri-
cal component)
-
-
-
-
Location (electri-
cal component)
-
-
-
-
-
-
213