System
Block
diagram
+35V
+24V
+18V
+12V
+5V
GND
AC
230V
-240V/50-60Hz
POWER
SUPPL
Y
DC
24V
EMERGENCY
INPUT
24V
DC
GAIN
MIC1-MIC2
MIC3/LINE1
LINE2/LINE3
PL
AYER
FM ANT
BT ANT
CH
PL
AYER
LEVEL
GND
TEL
IN
GND
CHIME
IN
CH
GND
FIRE
IN
FIRE
LINE
OUT
TONE
CONTROL
70V
70V
50V
35V
25V
COM
INDICATOR
4-8 OHM OUTPUT
70V
DIRECT OUTPUT
70V
ZONE1-4 OUTPUT
ZONE
OUTPUT
SELECTION
ZONE
VOL
UME
CONTROL
PROTECTOR
POWER AMPLIFIER
MASTER
100Hz
10kHz
MUTE
MUTE
MUTE
NORMAL0
NORMAL1
NORMAL2
NORMAL3
NORMAL3
NORMAL2
NORMAL1
NORMAL0
PRIORITY0
PRIORITY
PRIORITY[0:1]
NORMAL[0:3]
INPUT-LEVEL
GND
PHANTOM
+24V
PRIORITY1
PRIORITY
INPUT-LEVEL
GND
INPUT-LEVEL
PRIORITY0
PRIORITY1
OUTPUT
TRANSFORMER
L
R