0250: Power Supply (24 V) Failure - Minolta magicolor 7300 Service Manual

FrameMaker Ver.6E (PC) magicolor 7300 TROUBLESHOOTING
02.08.08
3023
Step Action
Check the motor connector for
1 proper connection and correct
as necessary.
Check the motor for proper
2 drive coupling and correct as
necessary.
3 M11 Operation check
4 Change PWB-Y.
5 Change PWB-A.

(30) 0250: Power Supply (24 V) Failure

<Detection Timing>
Malfunction
Code
When the Power supply alarm is continuously detected after the lapse of
0250 a predetermined period of time while the 24V remote is ON and the Hard
Alarm is OFF.
<Action>
Front Door Switch (S1)
Front Door Open Close Detecting Switch
(S2)
Left Door Switch (S3)
Right Door Open Close Detecting Sensor
(PC27)
Step Action
1 PC27 Operation Check
2 S1 Operation Check
3 S2 Operation Check
4 S3 Operation Check
5 Change PWB-T.
6 Change PWB-A.
7 Change PU1.
Ref. Page
Control Signal
—
—
PWB-Y PJ2-Y-1 to 4
T-3
(Pulse Output)
—
—
Description
Relevant Electrical Parts
DC Power Supply (PU1)
Control Board (PWB-A)
Ref. Page
Control Signal
T-1 PWB-A CNF1-A-9 (ON)
T-2 PWB-A CNFCO-A-1 (ON)
T-2 PWB-A CNPWC-A-1 (ON)
T-2 PWB-A CNPWC-A-1 (ON)
—
—
—
T-35
WIRING DIAGRAM
(Location)
(Electrical
Parts)
— —
— —
22-F
— —
— —
WIRING DIAGRAM
(Location)
(Electrical
Parts)
6-I
17-B
17-A
17-A
— —
— —
— —