Panasonic FP-7818 Service Manual & Parts Manual page 333

Section V Troubleshooting
Remember that failure indications can be caused by defects in harnesses and/or
connections.
5.1 Self-diagnosis/Machine malfunction
The self-diagnostic function detects machine malfunctions and indicates messages
on the display depending on the trouble area.
When malfunctions occur, the +24V power supply is interrupted and the machine is
stopped. At the same time the message appears in the display. Take necessary
measures depending on the message.
(1) Use error: Message appears on the copy number display
Message
"Close sorter"
"Clear sorter bins"
"Close staple cover of sorter"
"Replace staple cartridge"
"Sorter-full-Empty/Press
mode key"
Cause
Code
Sorter is not installed correctly
U4
Paper condition in the sorter
U11
is abnormal
Stapler cover is not closed
U12
Staple cartridge is not
–
detected
Paper overflow in the sorter
oF
Page
P5-2
P5-2
P5-2
P5-2
P5-3
5-1