Konica Minolta magicolor 1600W, Service Manual

Page: 148 / 216

Field Service V er. 1.0 Nov. 200 8 1 8 . Power supply errors
111
magicolor 1600W magicolor 1650EN
T
roubleshooting
1 8 . Power supply errors
18.1 Machine is not energized at all (PU operation check)
18.2 Control panel indicators do not light
Relevant electrical parts
Power switch
Printer control board (PRCB) DC power supply (DCPU)
Step Check Item
Location (Electrical
component)
Result Action
1
Is the power source voltage being applied to
CN6 on DCPU? 1600W: L-3
1650EN: L-3
NO
Check wiring from
power outlet to
SW1 to CN1-N.
2
Are fuses (F1 and F2) on DCPU conduct-
ing?
⎯
NO
Change DCPU.
3
Are DC24 V and DC5 V being applied to
PJ17 on the printer control board?
1600W: E-5
1650EN: E-4 to 5
NO Change DCPU.
YES Change PRCB.
Relevant electrical parts
MFP board (MFPB)
Control panel DC power supply (DCPU)
Step Check Item
Location (Electrical
component)
Result Action
1
Is the power source voltage being applied to
CN6 on DCPU? 1600W: L-3
1650EN: L-3
NO
Check wiring from
power outlet to
SW1 to CN1-N.
2
Are fuses (F1 and F2) on DCPU conduct-
ing?
⎯
NO
Change DCPU.
3
Is PJ1 on PRCB properly connected?
1600W: F to G-4 to 5
1650EN: F to G-3 to 4
NO Reconnect.
For 1600W:
Is P105 on MFPB properly connected?
For 1650EN:
Is CN
8 on MFPB properly connected?
1600W: H-4 to 5
1650EN: F to G-3 to 4
For 1600W:
Is P102 on MFPB properly connected?
For 1650EN:
Is CN9 on MFPB properly connected?
1600W: I-6
1650EN: I-5
4
For magicolor 1600W
Is PJ1 on operation board properly con-
nected?
For magicolor 1650EN
Is CN1 on operation board properly con-
nected?
1600W: K-6
1650EN: K-5
NO Reconnect.
YES
Operation panel.
Change MFPB.