Brother FAX100 Service Manual page 71

Trouble
(3) Speaker silent during
on-hook dialing.
(4) Dial does not switch
between tone and pulse.
(5) Telephone does not
ring.
Communications related
Trouble
(1) No tone is transmitted.
• Check whether the ordinary dialing function (other than the on-
hook dialing with the hook key) works correctly or not.
- If yes, proceed to the following checks:
- If not, refer to item (1) above.
• Check the speaker.
• Check the NCU PCB.
• Check the main PCB.
• Check the main PCB.
• Check the speaker.
• Check the NCU PCB.
• Check the main PCB.
• Check the main PCB.
• Check the NCU PCB.
V – 19
Action to be taken
Action to be taken