Panasonic PANAFAX DF-1100, Service Manual

Page: 117 / 333

Troubleshooting
4–5
4.3.1 Information Codes: 400, 420
START
400
END
END
Enable the monitor speaker.
(Refer to Sect. 5.3 Parameter
No. 08)
Does the remote unit repeat
the 300 bps signal every 3
sec.?
1. Refer to Sect. 4.6.
2. Check the remote unit.
(Remote unit defective)
(Remote unit defective)
2. Check the telephone
1. Check the remote unit.
number to the remote unit.
Perform a transmission test to
the remote unit in question.
Does the remote unit send the
CED and 300 bps Fax signal ?
Is transmission to the
reference unit successful?
1. Replace the LCE PCB.
2. Replace the FCB PCB.
Does the trouble still occur?
Yes
Yes
Yes
No
No
No
Yes
No
START
420
END
2. Check the remote unit.
1. Misdialed call.
(Remote unit defective)
3. Refer to Sect. 4.6.
Check the line connection
from the wall jack to the ”Line”
on the LCE PCB.
Is reception from a reference
unit successful?
Replace the FCB PCB.
Yes
No