Power Supply Errors; Machine Is Not Energized At All (Pu Operation Check); Control Panel Indicators Do Not Light - Konica Minolta magicolor 2590MF Service Manual

16. Power supply errors

16. Power supply errors

16.1 Machine is not energized at all (PU operation check)

Power switch (SW1)
Printer control board (PRCB)
Step
Is the power source voltage being applied to
1
CN1DCPU1 on DCPU1?
Are fuses (F1 and F2) on DCPU1 conduct-
2
ing?
Are DC24 V and DC5 V being applied to
3
PJ2PRCB on the PRCB?

16.2 Control panel indicators do not light

Image processing board (IPB)
Operation board
Step
Is the power source voltage being applied to
1
CN1DCPU1 on DCPU1?
Are fuses (F1 and F2) on DCPU1 conduct-
2
ing?
3 Is P7IPB on IPB properly connected?
Is P702 on Operation boad properly con-
4
nected?
252
Relevant Electrical Parts
Check Item
Relevant Electrical Parts
Check Item
Field Service Ver. 1.0 Aug. 2007
DC power supply1 (DCPU1)
Location
(Electrical Result
component)
Check wiring from power
J-6 NO
outlet to PG1 to CN1.
— NO Change DCPU1.
NO Change DCPU1.
G-6
YES Change PRCB.
DC power supply1 (DCPU1)
Location
(Electrical Result
component)
Check wiring from power
J-6 NO
outlet to PG1 to CN1.
— NO Change DCPU1.
I-10 NO Reconnect.
NO Reconnect.
G-10
Change Operation boad.
YES
Change IPB.
Action
Action