411UD Document #50759 Rev. E 12/09/2008 P/N 50759:E 39
Troubleshoot Mode
The secondary phone line may be tested by pressing the E key for touchtone dialing or the F key for rotary dialing
and then following the same procedure used for the primary phone line. A handset may be temporarily connected
across transformer T1 of the 411UD as indicated in Figure 3-2. The handset, when connected across T1, may be used
only as an amplifier/speaker or telephone with the keypad used for number dialing.
TB2
TB1
R41
U8
U10
U11
J2
PH1
PH2
J1
J4
FIGURE 3-2:Handset/Speaker Connection
Both Primary and Secondary Lines
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