Philips SM30 - Block Diagram

3
Zone relay
module
module
Zone relay
module
Zone relay
Control relay
module
Power
supply
Displ/keyboard
Line output module
Music input
Microphone
Call station
Control input
module
module
module
Microprocessor
board
1
6
7
12
13
18
1
12
1
2
3
1
2
3
1
2
3
1
8
1
2
SM30
SQ45
2-channel p.a. amplifier for
call and music applications
Sound Management
System
AC
DC
Radio
CD
Cassette
Loudspeaker
zones 7-12
Loudspeaker
zones 1-6
Loudspeaker
zones 13-18
Relay
outputs 1-12
input output
music
call
input
module
3
4
5
6
100/70/50V 1V
Optional
4SM30011
Pilot tone
Recorded
message
module
input
input
module
Chime-,
attention-,
alarm-,
signals
Fig. 1 - Block diagram
GB/SM 30 user manual 5/26/98 10:17 AM Page 3