Brother DCP-7030, Service Manual, Page: 263 / 315

App. 1-24
Confidential
<WSW19>
Note:
Selector 7 takes effect only in models supporting V.34 mode.
• Selectors 1 through 6: First and last choices of transmission speed for fallback
These selectors are used to set the MODEM speed range. With the first transmission
speed choice specified by selectors 1 through 3, the machine attempts to establish the
transmission link via the MODEM. If the establishment fails, the machine automatically
steps down to the next lowest 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 4 through 6.
If the MODEM always falls back to a low transmission speed (e.g., 4,800 bps), set the first
transmission speed choice to the lower one (e.g., modify it from 12,000 bps to 7,200 bps) in
order to deactivate the high-speed MODEM function and reduce the training time for
shorter transmission time.
Generally, to save the transmission time, set the last transmission speed choice to a higher
one.
• Selector 7: V.34 mode
If this selector is set to "0," selectors 5 through 8 on the WSW38 through WSW40 and on
WSW41, will become effective.
Selector No. Function Setting and Specifications
1
I
3
First transmission speed choice
for fallback
No. 1 2 3
No. 4 5 6
0 0 0: 2,400 bps
0 0 1: 4,800 bps
0 1 0: 7,200 bps
0 1 1: 9,600 bps
1 0 0: 12,000 bps
1 0 1: 14,400 bps
1 1 0: 14,400 bps
1 1 1: 14,400 bps
4
I
6
Last transmission speed choice
for fallback
7 V.34 mode 0: Permitted 1: Prohibited
8 V.17 mode 0: Permitted 1: Prohibited