17.3 Fusing Heaters Do Not Operate; 17.4 Power Is Not Supplied To Option - Konica Minolta bizhub C353 Service Manual

Field Service Ver. 4.0 Jun. 2008

17.3 Fusing heaters do not operate

Main power switch (S1)
Right door switch (S5)
Fusing unit
Step
Is the power source voltage applied across
CN7-5 on DCPU?
1
2
During this time, the right door should be
closed.
Is the power source voltage applied across
2
2
CN47-1?

17.4 Power is not supplied to option

17.4.1 DF-611
Step
Is DC24 V being output from CN5-1 on DF-
1
2
611?
Is DC24 V being output from CN9-9 on
2
2
DCPU?
3 Is the fuse on DCPU conducting?
17.4.2 PC-104/204/405
Step
Is DC24 V being applied to hookup
1
2
connector CN44-13?
Is DC24 V being output from CN14-2 on
2
PRCB?
3 Is the fuse on DCPU conducting?
Relevant parts
Check item
Check item
Check item
17. Power supply trouble
DC power supply (DCPU)
WIRING
DIAGRAM Result
(Location)
Check wiring from power
Q-7 NO
outlet to S1 to CN7 to S5.
YES Fusing unit
D-21
NO Change DCPU.
WIRING
DIAGRAM Result
(Location)
Y-12 YES Malfunction in DF-611
Check wiring from DCPU
P-3 NO
to ADF.
YES Change DCPU.
—
NO Malfunction in DF-611
WIRING
DIAGRAM Result
(Location)
Malfunction in paper feed
J-16 NO
cabinet
Check wiring from PRCB
H-16 NO to CN44 to paper feed
cabinet.
YES Change DCPU.
—
Malfunction in paper feed
NO
cabinet
Action
Action
Action
551
2