Minolta EPI 054 User Manual page 312

FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 TROUBLESHOOTING
98.05.15
C0400
Step Check Item
Does LA1 light up when the Start
1 Key is pressed?
Does the voltage across PJ14A-3
on PWB-A and GND become
2
DC4.3V or less when LA1 turns
ON?
Disconnect CN7 (2P). Is there con-
3 tinuity across CN7-1 and 2 on the
LA1 side?
Is the voltage across CN1-1 and 3
on PU1 AC100V?
4
C0410
Step Check Item
Does LA1 turn ON when the Power
Switch is turned ON or in the
1
standby state?
Does the voltage across PJ14A-3
on PWB-A and GND remain
2 DC4.1V or lower when the Power
Switch is turned ON or in the
standby state?
Result
Check the photo receiver of the AE
YES Sensor for contamination.
Replace PWB-H or PWB-A.
Replace PWB-A.
NO
Check LA1 and TF2 for continuity.
NO
YES Replace PU1.
Check Power Supply Unit PU2 and
NO
Power Supply Board PWB-C.
Result
Check to see if the photo receiver of
the AE Sensor is receiving extrane-
NO
ous light.
Replace PWB-H or PWB-A.
YES Replace PWB-A.
Replace PU1.
NO
T-44
Action
Action