Develop ineo 350 - Power Supply Trouble

Field Service Ver. 1.0 Aug. 2005 20. Power supply trouble
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Troubleshooting
20. Power supply trouble
20.1 Machine is not Energized at All (PU1 Operation Check)
20.2 Only the Power Supply Cooling Fan Motor turns
Relevant Electrical Parts
Main Power Switch (S1)
Power Supply Unit (PU1)
Mechanical Control Board (PWB-A)
MFBS Board (MFBS)
Step Check Item
Location
(Electrical
Component)
Result Action
1
Is a voltage being applied to the electrical
outlet?
- NO Provide a power supply.
2 Is the wiring to terminal S1 correct? W-22 NO Rewire
3
Is there continuity across the fuse (F101)
on PU1?
- NO Change the fuse.
4
Is there continuity across the fuse (F103)
on PU1?
- NO Change the fuse.
5
Is the wiring between the MFBS Board and
Mechanical Control Board correct?
- NO Rewire
6
Is the wiring between the Mechanical Con-
trol Board and Power Supply Unit correct?
- NO Rewire
7
Is DC 5 V being output from PJ8A-2 on the
PWB-A?
-
NO Change PWB-A
YES Change PU1
Relevant Electrical Parts
Power Supply Unit (PU1)
Control Panel (UN1)
Mechanical Control Board (PWB-A)
Step Check Item
Location
(Electrical
Component)
Result Action
1
Is DC 4.5 V being output from PJ8A-3 on
the PWB-A?
- NO Change PWB-A
2
Is DC 5 V being output from PJ9PU1-1 on
PU1?
-
NO Change PU1
YES Change UN1