Wsw39 - Brother MFC8420 Service Manual

Selector
No.
1 First transmission speed choice
| for fallback
4
5 Last transmission speed choice
| for fallback
8
NOTE:
WSW39 takes effect only in V. 34 mode. For the transmission speed setting in other modes,
refer to WSW19.
l
Selectors 1 through 8:
These selectors are used to set the modem speed range. With the first transmission speed
choice specified by selectors 1 through 4, the machine attempts to establish the transmission
link via the modem. If the establishment fails, the machine automatically steps down to the
next highest speed and attempts to establish the transmission link again. The machine
repeats this sequence while stepping down the transmission speed to the last choice
specified by selectors 5 through 8.
If the modem always falls back to a low transmission speed (e.g., 24,000 bps), set the first
transmission speed choice to the lower one (e.g., modify it from 31,200 bps to 26,400 bps) in
order to deactivate the high-speed modem function and reduce the training time for shorter
transmission time.
WSW39 will be limited by selectors 3 through 8 of WSW40.
WSW39 (Function setting 17)
Function
First and last choices of transmission speed for fallback
A-41
MFC-8420/8820D/8820DN, DCP-8020/8025D/8025DN
Setting and Specifications
No. 1 2 3 4
No. 5 6 7 8
0 0 0 0 :
0 0 0 1 :
0 0 1 0 :
0 0 1 1 :
0 1 0 0 :
0 1 0 1 :
0 1 1 0 :
0 1 1 1 :
1 0 0 0 :
1 0 0 1 :
1 0 1 0 :
1 0 1 1 :
1 1 0 0 :
1 1 0 1 :
1 1 1 0 :
1 1 1 1 :
SERVICE MANUAL
2400 bps
4800 bps
7200 bps
9600 bps
12000 bps
14400 bps
16800 bps
19200 bps
21600 bps
24000 bps
26400 bps
28800 bps
31200 bps
33600 bps
33600 bps
33600 bps