Power Supply Trouble; Fusing Heaters Do Not Operate - Konica Minolta bizhub C360 Service Manual

22. POWER SUPPLY TROUBLE

22. POWER SUPPLY TROUBLE
22.1 Machine is not energized at all (DCPU operation check)
Main power switch (SW1)
Printer control board (PRCB)
Step
1 Is a power voltage supplied across CN001-
1 and 2 on DCPU?
2 Are the fuses on DCPU conducting?
3 Is DC24 V being output from CN007-1, 3
on DCPU?
4 Is DC5 V being input to CN006-5 to 7 on
DCPU?
5 Is DC5 V being input to CN2-10, 11 on
PRCB? (LED on PRCB does not blink.)

22.2 Fusing heaters do not operate

Main power switch (SW1)
2.1
Right door switch (MS2)
Fusing unit
Step
1 Is the power source voltage applied across
CN008-3 on DCPU?
During this time, the right door should be
closed.
2 Is the power source voltage applied across
CN8-1 and 10?
696
2.1
Relevant parts
Check item
Relevant parts
Check item
Field Service Ver. 2.1 Feb. 2012
DC power supply (DCPU)
WIRING
DIAGRAM Result
(Location)
S to T-4 NO Check the WIRING from
the wall outlet to SW1
CN001.
— NO Change DCPU.
Q-2 NO Change DCPU.
Q-6 NO Change DCPU.
E-15 NO Change DCPU.
YES Change PRCB.
DC power supply (DCPU)
WIRING
DIAGRAM Result
(Location)
Q-3 NO Check wiring from power
outlet to SW1 to CN008 to
MS2.
K-13 YES Fusing unit
NO Change DCPU.
Action
Action