Fire-Lite 411UD - Controls and Indicators; Front Panel Controls; Front Panel Indicators; Circuit Board Indicators

411UD Document #50759 Rev. E 12/09/2008 P/N 50759:E 11
Controls and Indicators
1.4 Controls and Indicators
Front Panel Switch
• Silence Switch - press to silence local 411UD piezo sounder
411UD Piezo Sounder
• The 411UD piezo sounder is used to locally annunciate DACT troubles. DACT troubles include input chan-
nel open circuit, phone line 1 or 2 voltage fault, phone number 1 or 2 communication fault, total communica-
tion failure and communications disabled.
Front Panel Indicators
• Communication Fail - yellow LED
• DACT Trouble - yellow LED
• Channel Active - red LED
Circuit Board Indicators
• Primary Phone Line 1 (PH1) Active - red LED
• Secondary Phone Line 2 (PH2) Active - red LED
• Modem Active - green LED
TB2
TB1
R41
U8
U10
U11
J2
PH1
PH2
J1
J4
FIGURE 1-2:411UD Controls and Indicators
Channel
Active
LED
DACT
Trouble
LED
Comm.
Fail LED
Piezo
Silence
Switch
PH1 LED
PH2 LED
Modem
LED
Comm.
Fail LED
DACT
Trouble
LED
Channel
Active
LED
411udbrd.cdr
411udcvr.cdr