Panasonic UF-580 Service Manual page 97

4.3.7. Information Codes: 459, 494, 495
Check the line connection
between the telephone jack on
the wall and the MJR PCB.
Is communication with the
reference unit successful?
Does the trouble occur
regardless of the remote unit?
If the telephone line frequently
disconnects at the beginning of
each communication, ask the
telephone company to check
the line.
START
No
Yes
Yes
END
1. Replace the MJR PCB.
2. Replace the SC PCB.
Does the problem still occur?
Yes
Check the telephone line
condition.
No
1. Check the remote unit in
question.
(Remote unit is defective)
2. Refer to Sect. 4.6.
97
No
END