Minolta EPI 054 User Manual page 314

FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 TROUBLESHOOTING
98.05.15
C0500, C0510
After resetting a C0510 condition, C0500 will be shown if the same problem recurs. For
this reason, the same troubleshooting procedure is used for C0500 and C0510.
Step Check Item
Does H1 light up when the Power
Switch is turned ON?
1
Disconnect CN14 (4P). Is the resis-
2 tance across CN14-2 and 3 on the
TH1 side infinity?
Does the voltage across PJ7A-2 on
PWB-A and GND change from
3 DC5V to DC0V when the Front
Door is closed with the Power
Switch ON?
Disconnect CN5 (2P). Is there con-
4 tinuity across CN5-1 and 2 on the
Fusing Unit side?
C0520
Step Check Item
Does H1 remain lit up even after the
1
copier has completed warming up?
Does the voltage across PJ7A-2 on
PWB-A and GND remain DC0V
2
even after the copier has completed
warming up?
Disconnect CN14 (4P). Is the circuit
3 across CN14-2 and 3 on the Fusing
Unit side short-circuited?
Result
Check TH1 for installation or clean
YES
it.
NO Begin with step 3.
YES Replace TH1.
Replace PWB-A.
NO
Replace PWB-A.
NO
YES Replace SSR1.
Check H1 and TF1 for continuity.
NO
Result
YES Begin with step 2.
NO Begin with step 3.
YES Replace PWB-A.
Replace SSR1.
NO
YES Replace TH1.
Replace PWB-A.
NO
T-46
Action
Action