Audio-Contribution And Audio-Distribution Circuit - Philips CCS 800 Service Manual

10.2.7 Audio-Contribution and Audio-Distribution circuit

Noise level
Measure the noise, A-weighted & rms, at AUDIO-DISTR via M3 (pin 3 at X11 or X12), related to M2 (GND): Noise level
(A-weighted): < -70dBV.
X10
X110
LBB 3310/00, 3330/00 and 3331/00
4822 861 11006
90 ... 264V AC
~ ~
Power Supply
AC
24V DC
PCB CPSU
Loudspeaker
(GND)
M110 M111 M121 M122 M124
6 9 4 8
Line-IN Rec-IN Rec-IN
L
X205 M3
3
25Ω
M2
(GND) (GND)
M150 M151
2 7 2 5 X150
Telephone
R IN
Figure 6
page: 18
SERVICE MANUAL
X11
A1
Audio-distr.
+
V
-
003_006.cdr
Date of issue:
July 1998