Panasonic Panafax UF-4000, Service Manual

Page: 81 / 284

81
4.3.5. Information Codes: 408, 409, 417, 418, 490
START
END
Is communication with
the reference unit
successful?
Is the unit transmitting or
receiving?
Yes
Transmitting
Receiving
No
Yes
No
Change Function
Parameter #018:Reduce
Rx Modem Speed
Does the problem still occur?
1. Replace the SC PCB.
Does the problem still
occur?
Change Function
Parameter #013: Increase
G3 Rx Equalization
Does the problem still
occur?
END
Does the problem still
occur?
Yes
Yes
No
Change Function
Parameter #071: Increase
Error Tolerance
Change Function
Parameter #011: Reduce
Rx Sensitivity Level
Does the problem still
occur? No
No
Yes
Yes
No
Does the problem still
occur?
Change Function
Parameter #010: Reduce
Tx Attenuation Level
Change Function
Parameter #017: Reduce
Tx Modem Speed
The telephone line may have
a high level of white noise
and/or frequent impulse noise.
Ask the telephone company
to check the line.
Does the problem still
occur?
No
Yes
Yes
No
Check the telephone line
condition.