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5. SM40 SURVEILLANCE CENTRE MODULES
100V/20kHz
LINE
R(Ohms)
100V
70V
50V
SM40 SURVEILLANCE BASIC SYSTEM (LBB 1370)
TB
16
9
8
1
TB
FIG.4
Amplifier Surveillance Board (ASB) LBB 1368
S1
+
ON
1
+15V
11
LSB
2
28
12
3
Data
1
13
5
Line
4
1K8
820
560
Loudspeaker Surveillance Board (LSB) LBB 1367
ON
LSB
SW-1
1
IC2
DATA
13
3
PGC
CPC
SM40 SURVEILLANCE
CENTRE (LBB 1370)
RS232
B
C
S2
MSB
IC2
B
C
S4
1
B
SW-2
MSB
8
LED
10K
TRAFO
5
4 12
2
CRC
U-1
PSU
15V
External error
SSC
Communication
1
1- 8
6
7
15
14
+5V
1
RE1
8
C
9
S3
+15V
11
1
5. Printer error
4. System error
3. External error
2. LSB/ASB error
1. General error
TB
IN
TO
8 x 128
LSBs/ASBs
Power supply
5
39
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