Panasonic UF-E1, Service Manual

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UF-E1
69
4.3.7. Information Codes: 459, 494, 495
START
END
between the telephone jack on
Check the line connection
the wall and the NCU PCB.
Is communication with the
reference unit successful? No
Yes
No
Does the problem still occur?
1. Replace the SC PCB.
No
1. Check the remote unit in
question. (Remote unit defective)
2. Refer to Sect. 4.6.
2. Replace the NCU PCB.
If the telephone line frequently
disconnects at the beginning of each
communication, ask the telephone
company to check the line.
Does the trouble occur
regardless of the remote unit?
END
Have the telephone line checked.
Yes
Yes