T69_70.PDF part of Minolta T69 70 T69_70.PDF, Minolta Copiers CF3101 LINKFILE T69

Text preview for : T69_70.PDF part of Minolta T69 70 Minolta Copiers CF3101 LINKFILE T69_70.PDF

Back to : T69_70.PDF | Home

Power Supply-Related Malfunctions
(1) Copier is not energized at all.

Relevant Electrical Parts
IO Board (PWB-IO) DC Power Supply 1 (PU1)
DC Power Supply 2 (PU2)

WIRING
Step Check Item DIAGRAM Result Action
(Location)
Check wiring
Is a power voltage supplied across
1 30-H NO between the wall
PJ3PU1-1 and 3 on PU1?
outlet and PJ3PU1.
Are the fuses (F1 and F2) on PU1 con-
2 -- NO Change PU1.
ducting?
Is a power voltage supplied across
3 30-F NO Change PU1.
CN1PU2-1 and 2 on PU2?
4 Is the fuse (F1) on PU2 conducting? -- NO Change PU2.
Is DC5 V being output from CN2PU2-3
5 31-F NO Change PU2.
on PU2?
Is DC5 V being input to PJ15PU1-1 on
6 28-F NO Change PU2.
PU1?
Is DC5 V being input to PJ1IO-3 on the NO Change PU1.
7 14-E
IO Board? YES Change PWB-IO.
(2) Only the Power Supply Cooling Fan rotates.

Relevant Electrical Parts
PIC Board (PWB-PIC) DC Power Supply 1 (PU1)
DC Power Supply 2 (PU2)

WIRING
Step Check Item DIAGRAM Result Action
(Location)
Is DC3.3 V being output from PJ9PU1-1
1 29-F NO Change PU1.
on PU1?
Is DC5 V being output from CN2PU2-2
2 31-F NO Change PU2.
on PU2?
Is DC3.3 V being input to PJ1PIC-1 on YES Change PWB-PIC.
3 32-C
PWB-PIC and DC5 V to PJ1PIC-3? NO Check the wiring.

(3) Control panel indicators do not light.

Relevant Electrical Parts
Image Processing Board (PWB-C) DC Power Supply 3 (PU201)
Control Panel (UN201)

WIRING
Step Check Item DIAGRAM Result Action
(Location)
Reconnect or
Is the I/F cable between the IR and
1 -- NO change the I/F
engine connected properly?
cable.
Check the wiring
Is a power voltage being applied across
2 22-H NO from the wall outlet
CN3PU201-1 and 2 on PU201?
to CN3PU201-1/2.
3 Is the fuse (F1) on PU201 conducting? -- NO Change PU201.
Is DC5.1 V being output from
4 CN2PU201-1 on PU201 and DC24 V 22-H NO Change PU201.
from CN2PU201-3?
Is PJ12C on PWB-C securely con-
5 26-E NO Reconnect.
nected?
NO Reconnect.
Is CN12 on UN201 securely con-
6 24-F Change UN201.
nected? YES
Change PWB-C.