Olivetti d-Color MF4003 Service Manual page 517

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