Minolta EP5000 General, Mechanical/Electrical page 365

Interleaf EP5000/EP4000 TROUBLESHOOTING
97.04.01
uC0990, C0991
Step Check Item
Does PC19 operate properly?
Using the IC Port Data Check function,
1
make an input port check on PWB-A
(400) (IC1A) PG3.
uC0992, C0993
Step Check Item
Does PC35 operate properly?
Using the IC Port Data Check function,
1
make an input port check on PWB-A
(400) (IC2A) PB3.
Does PC2 operate properly?
Using the IC Port Data Check function,
2
make an input port check on PWB-A
(400) (IC2A) PC1.
uC0994
Step Check Item
Does M26 turn when the Paper De-
1
scent key is pressed?
Does the voltage across PF-105 PWB-
A PJ4A-6B or PJ4A-7B and GND
2 change from DC0V to DC24V when the
Tray is slid in or the Paper Descent key
is pressed?
Does the voltage across PF-105 PWB-
A PJ4A-5A and GND vary between
3
DC0V and DC5V while M26 is turning?
Result
YES Change PF-105 PWB-A.
Check the Paper Take-Up Roll for op-
eration and, if it is operational, change
NO
PC19.
Result
Change PF-105 PWB-A.
YES
Change PWB-H, flat cable, or PC35.
NO
Change PF-105 PWB-A.
YES
Change PC2, PWB-H, or flat cable.
NO
Result
Go to step 3.
YES
Change M26, PWB-H, or flat cable.
YES
Change PF-105 PWB-A.
NO
YES Change PF-105 PWB-A.
Check the pulse disk and gear.
NO
Change PC5.
T-90
Action
Action
Action