5-1
Troubleshooting
When the finisher is installed.
a) The finisher entry paper feed sensor does not detect paper with a predetermined
time after the copier paper exit sensor detected paper.
b) The finisher entry paper feed sensor does not turn off within a predetermined
time.
c) The finisher paper exit sensor does not detected paper within a predetermined
time after the finisher entry paper feed sensor detected paper.
d) The finisher paper exit sensor (straight) does not turn off within a predetermined
time.
e) The finisher paper exit sensor (invert) does not turn off within a predetermined
time.
1) Are the exit options installed correctly?
2) Exit options connector is shorted or broken.
3) Exit options connector is defective.
4) Finisher CPU PCB connector is shorted or
broken.
5) Finisher CPU PCB is defective.
6) LVPS connector is shorted or broken.
7) LVPS is defective.
8) CPU PCB connector (CN15) is shorted or
broken.
9) CPU PCB is defective.
Too many copies in the finisher bin. The paper
must be removed and press the finisher mode
key. (Face down only)
Section V Troubleshooting
5.1 Error detection by self-diagnostics
The self-diagnostics function detects troubles in important areas of the finisher. When
any trouble occurs, the machine is stopped. The error indication appears in the
“message” display of the copier and the “Wait” indicator on the copier turns ON.
(1) User error
Code
Problem
Cause/Check
U4
oF
Finisher Inverting unit/Inverting
shift tray (option)
Finisher bin capacity
(2) Paper Jam
Code
Contents
J60
