Service manual

15
Functional Description
DCB, DCFCB and DCFCTB Models
Communications/Controller Board Layout
ACFCTB Communications / Controller Board Layout
Refer to Figure 3 Communications/Controller Board Layout on page 24.
Reference
Description
Indication
D48
CPU LED
Microprocessor Heartbeat
D12
RECEIVE LED
RF Carrier Indicator on with carrier
D7
TRANSMIT LED
Transmit
D25
RELAYS ARMED
Power to relays on
D29
RELAY #1 LED
Relay #1 closed
D38
RELAY #2 LED
Relay #2 closed
D39
RELAY #3 LED
Relay #3 closed
D43
RELAY #4 LED
Relay #4 closed, or PA mode
D15
PRESSURE LED
Pressure Sensor input
D13
INTRUSION LED
Intrusion Sensor input
D18
CURRENT LED
Current Sensor input
D14
ROTATION LED
Rotation Sensor input
D16
LOW BATTERY LED
Low Battery Sensor (internal)
D17
AC POWER FAIL
LED
AC Power Fail Sensor (internal)
D34
POWER LED
12 V Operating Power
D36
ISO 12V
Isolated 12V power
D34
ISO 5V
Isolated 5V power
U16
LCD Display
Displays Function Counters, Decodes and Software
Revision
JP1
SINAD
1
Receiver module carrier detect, short to pin 2 when using SINAD
board along with both sides of JP4 and remove D1.
2
External transceiver carrier detect.
JP2
Test Speaker
1
0 to 2 Vp-p, Audio Source: Receiver Audio during P.A. functions,
Siren Audio during Electronic Siren functions.
2
Ground
JP3
Short For VOX Carrier Detect
1
Short to (JP3, pin 2), for VOX carrier detect.