Troubleshooting Procedures; 1 ] Control Panel Related; 2 ] Telephone Related - Brother IntelliFax-2600 Service Manual

2.4

Troubleshooting Procedures

[ 1 ] Control panel related

Trouble
(1) LCD shows nothing.
(2) Control panel inoperative.

[ 2 ] Telephone related

Trouble
(1) No phone call can be made.
(2) Speed dialing or one-touch
dialing will not work.
(3) Speaker silent during on-hook
dialing.
(4) Dial does not switch between
tone and pulse.
(5) Telephone does not ring.
Panel-main harness between the main PCB and the
control panel PCB
Control panel PCB
Low-voltage power supply PCB
Main PCB
LCD
Panel-main harness between the main PCB and the
control panel PCB
Control panel PCB
FPC key
Main PCB
FPC key
Control panel PCB
NCU PCB
Main PCB
Ordinary dialing function (other than the speed and
one-touch dialing)
If it works normally, check the main PCB; if not, refer to
item (1) above.
Ordinary dialing function (other than the on-hook
dialing with the hook key)
If it works normally, proceed to the following checks; if
not, refer to item (1) above.
Main PCB
Speaker
NCU PCB
Main PCB
VI - 14
Check:
Check: