d-Color MF4003/MF3303
L TROUBLESHOOTING > 13. TROUBLES THAT DO NOT DISPLAY THE TROUBLE
CODE
L-119
13. TROUBLES THAT DO NOT DISPLAY THE TROUBLE CODE
13.1 Machine is not energized at all (DCPS operation check)
Contents
Trouble type
Machine is not energized at all
Rank
-
Trouble detection condition -
Trouble isolation
-
Relevant electrical parts
• Base board (BASEB)
• DC power supply (DCPS)
Procedure
Step
Check item
Location of electrical
component
Result
Action
1
Is a power voltage supplied across CN1-1 and
2 on DCPS?
7-V
NO
Check the wiring from power outlet to
DCPS CN1.
2
Are the fuses on DCPS conducting?
-
NO
3
Is DC5 V being output to CN5-1, 2 on DCPS?
7-S
NO
4
Is DC24 V being output to CN4-3 on DCPS?
9-S
NO
• Check the wiring from the wall
BASEB to DCPS.
•
•
5
The LED on BASEB is blinking?
-
NO
6
Is DC24 V being output to CN4-6 on DCPS?
9-S
NO
13.2 Fusing heaters do not operate
Contents
Trouble type
Fusing heaters do not operate
Rank
-
Trouble detection condition -
Trouble isolation
-
Relevant electrical parts
• Right door switch (SW5)
• DC power supply (DCPS)
• Base board (BASEB)
• Fusing unit
Procedure
Step
Check item
Location of electrical
component
Result
Action
1
Is a power voltage supplied across CN1-1 and
2 on DCPS?
During this time, the right door should be
closed.
7-V
NO
Check the wiring from power outlet to
DCPS to SW5.
2
Is the power source voltage applied across
DCPS CN6?
8-T
YES
NO
• Check the wiring from DCPS CN6 to
BASEB CN1E.
•
•
13.3 Power is not supplied to DF
Contents
Trouble type
DF is not energized at all
Rank
-
Trouble detection condition -
Trouble isolation
-
Relevant electrical parts
• DC power supply (DCPS)
• DF
Procedure
Step
Check item
Location of electrical
component
Result
Action
1
Is DC24 V being output to CN8-4, 5 on
DFCB?
23-S
YES
Malfunction in DF.
Y119930-3
Service Manual
Summary of Contents for d-Color MF 4003
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