Minolta EP1054 Service Manual page 176

FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 TROUBLESHOOTING
98.05.15
C0998, C0999
Step Check Item
Check Shifter Return Position Sen-
1 sor PC4. See p. T-2
(PF-112) PWB-A IC2A PD1.
C099A, C099b
Step Check Item
Check Shifter Home Position Sen-
1 sor PC3. See p. T-2
(PF-112) PWB-A IC2A PC0
C099C
Step Check Item
Does M27 turn when the Drawer is
1 slid in with a paper stack loaded in
the Shift Tray?
Does the voltage across PJ10A-4
(moving to right) on PF-112 PWB-A
2
and GND change from DC0V to
DC24V when doing step 1?
Does the voltage across PJ9A-12
on PF-112 PWB-A and GND
3
change from DC0V to DC5V while
M27 is turning?
Result
YES Replace PF-112 PWB-A.
Check PWB-H, flat cable and PC4.
NO
Result
YES Replace PF-112 PWB-A.
Check PWB-H, flat cable and PC3.
NO
Result
Perform step 3.
YES
Replace M27 or check PWB-H and
YES
flat cable.
Replace PF-112 PWB-A.
NO
YES Replace PF-112 PWB-A.
Check the pulse disk, Gear, and
NO
Sensor.
T-54
Action
Action
Action