Read Panasonic FA-S280 Service Manual online
4-1
Troubleshhooting
Section IV Troubleshooting
Remember that failure indications can be caused by defects in harnesses and/or
connections.
4.1 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
Code
U4
oF
Message
"Close sorter"
"Sorter-full-Empty/Press
mode key"
mode key"
Cause
Sorter is not installed correctly
Transport cover is not closed
Transport cover is not closed
Paper overflow in the sorter
(a) U4:Sorter failure
When the sorter is not installed correctly.
Is the sorter installed correctly?
• Install the sorter correctly
Does the input of the connector J3-
5(JNTSW) change when the door
switch is turned ON/OFF?
• Door switch improper fitting or
failure
YES
NO
NO
(b) oF: Paper detection problem
When the number of sorted copies received by a sorter bin exceeds the specified
number of copies.
To clear "oF", remove all the copied sheets and press the "Sorter mode selection"
key.
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