Line-In To Telephone-Out, Line-Out, Insertion-Out Circuit - Philips CCS 800 Service Manual

10.2.8 LINE-IN to TELEPHONE-OUT, LINE-OUT, INSERTION-OUT Circuit.

Noise level
Measure the noise, A-weighted & rms, successively at TELEPHONE-OUT (M109), LINE-OUT (M119) and INSERTION-
OUT (M169) all related to M2 (GND):
Noise level (A-weighted): < -84dBV.
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 Mx*
25Ω
M2
(GND) (GND)
M150 M151
2 7 2 5 X150
Telephone
R IN
Figure 8
page: 20
SERVICE MANUAL
A1
+
V
GND
-
* Mx Signal
M109 Telephone-out
M119 Line-out
M169 Insertion-out
003_008.cdr
Date of issue:
July 1998