Power supply trouble bizhub C350 Field Service Ver. 2.0 April 2004
4-50
IV
Troubleshooting
3.3 Fusing Heaters do not Operate
3.4 Power is not Supplied to Options
3.4.1 ADF
3.4.2 Optional Paper Feed Cabinet
Relevant Electrical Parts
Upper Right Door Switch (SW5)
Fusing Unit
DC Power Supply (PU1)
Step Check Item
WIRING
DIAGRAM
(Location)
Result Action
1
Is the power source voltage applied across
PJ2PU1-1 and 3 on PU1?
During this time, the Right Door should be
closed.
26-G
NO Check wiring from
power outlet to SW5 to
PJ2PU1.
2
Is the power source voltage applied across
CN44-1 and 3, or across 2 and 3?
3-G
YES Fusing Unit
NO Change PU1.
Step Check Item
WIRING
DIAGRAM
(Location)
Result Action
1
Is DC24 V being output from CN51-1 on DF-
601?
23-E
YES Malfunction in DF-601
2
Is DC24 V being output from PJ5PU1-4 on
PU1?
23-E
NO Check wiring from PU1
to CN53 to ADF.
3
Is the fuse (F201) on PU1 conducting? YES Change PU1.
NO Change F201.
Malfunction in DF-601
Step Check Item
WIRING
DIAGRAM
(Location)
Result Action
1
Is DC24 V being applied to hookup connector
CN28-1?
26-J NO
Malfunction in Paper
Feed Cabinet
2
Is DC24 V being output from PJ6PU1-2 on
PU1? 22-F NO
Check wiring from PU1
to CN49 to Paper Feed
Cabinet.
3
Is the fuse (F204) on PU1 conducting? YES Change PU1.
NO
Change F204.
Malfunction in Paper
Feed Cabinet
FS4.fm Page 50 Tuesday, April 27, 2004 4:01 PM
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