Fusing Heaters Do Not Operate; Power Is Not Supplied To Option - Konica Minolta bizhub C200 Service Manual

18. Power supply trouble

18.3 Fusing heaters do not operate

Main power switch (SW1)
Right door switch (MS5)
Fusing unit
Step
Is the power source voltage applied across
CN_MCB-4 on DCPU?
1
During this time, the right door should be
closed.
Is the power source voltage applied across
2
CN1FIX-1 to 3 or CN1FIX-2 to 3?

18.4 Power is not supplied to option

18.4.1 DF-612
Step
Is CN13 on MFBUB to CN1 on DF-612
1
securely connected?
2 Is the fuse on DCPU conducting?
18.4.2 PC-105/104/204/405
Step
Is DC24 V being applied to hookup
1
connector CN79-14?
Is DC24 V being output from CN_OPN-2
2
on DCPU?
3 Is the fuse on DCPU conducting?
18.4.3 JS-505
Step
1 Are DC24 V being applied to CN86-1?
Is DC24 V being output from CN_OPN-1
2
on DCPU?
3 Is the fuse on DCPU conducting?
370
Relevant parts
Check item
Check item
Check item
Check item
Field Service Ver. 2.0 Dec. 2008
DC power supply (DCPU)
WIRING
DIAGRAM Result
(Location)
Check wiring from power
R-4 to 5 NO outlet to SW1 to
CN_MCB-4 to MS5.
YES Fusing unit
D-21
NO Change DCPU.
WIRING
DIAGRAM Result
(Location)
U to V-7 to 9 NO Reconnect.
YES Malfunction in DF-612.
—
NO Change DCPU.
WIRING
DIAGRAM Result
(Location)
Malfunction in paper feed
K-22 NO
cabinet
Check wiring from DCPU
R-5 NO to CN_OPN to paper feed
cabinet.
Malfunction in paper feed
YES
cabinet
—
NO Change DCPU.
WIRING
DIAGRAM Result
(Location)
K-25 NO Malfunction in JS-505.
Check wiring from DCPU
R-5 NO
to JS-505.
YES Malfunction in JS-505.
—
NO Change DCPU.
Action
Action
Action
Action