Brother FAX4750 Service Manual page 145

Selector
No.
1 Not used.
2 Ringer OFF setting
3
| Not used.
7
8 Toner save mode
Selector 2: Ringer OFF setting
l
This selector determines whether or not the ringer can be set to OFF.
WSW27
(Function setting 5)
Function
V - 39
Setting and Specifications
0: Yes 1:
0: Yes 1:
No
No