Philips CCS 800 - Page 40

SERVICE MANUAL
LBB 3310/00, 3330/00 and 3331/00 page: 38 Date of issue:
4822 861 11006 July 1998
12.1 Block diagram CPSU
LBB3310/00 Central Control Unit CCS800
Microphone in
(balanced)
Line in
Recorder in
Telephone in
Insertion in
Audio distribution
Audio contribution
Control 2
Control 1
Supply positive
Supply negative
Ground
Audio distribution
Audio contribution
Control 2
Control 1
Supply Positive
Supply negative
Ground
Telephone out
Line out
Recorder out
Insertion out
Headphone
Trunk 1
Trunk 2
L
R
Mains switch
Microphone gain
Rec. gain
L
R
Volume
contribution units
Volume
Monitor
Insertion on/off
3
1
5
4
6
7
2
3
1
5
4
6
7
2
Mains
Mode
Power
Supply
P12
Lim