SERVICE MANUAL
LBB 3310/00, 3330/00 and 3331/00 page: 22 Date of issue:
4822 861 11006 July 1998
10.2.9 REC-IN-L and REC-IN-R to REC-OUT Circuit.
Noise level
Measure the noise, A-weighted & rms
, at REC-OUT (M129) related to M2 (GND):
Noise level (A-weighted): < -90dBV.
629548 27
25Ω
X205
M129
X150X110
X10
AC
24V DC
Power Supply
90 ... 264V AC
~~
Loudspeaker
PCB CPSU
M110 M111 M121 M122 M124 M150 M151
M2
(GND) (GND) (GND)
LR IN
Rec-INLine-IN Rec-IN Telephone
+
-
A1
V
003_010.cdr
Figure 10