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Block Diagrams, Testpoint Overviews and Waveforms F21RE 6. 38

Block Diagram (Audio and Supply)

AUDIO K2
AUDIO
K8
SOURCE SELECTION
K1
TUNER +
IF K3 SOUND
PROC.
1751
+8V6
AV8
AUDIO

7751
7777 MSP3440 21 20 45
SCART 1 TEA64220 I11
2809 I2S BUS
SIFM 23
L IN-SC1-SNDR 24 3866 SOUND AUDIO CENTER IN
6 R2 28 CLOCK 7 SND-CENTER
SDA SEE SIF DEMO-
IN-SC1-SNDL 5 DULATOR IN 5
10 L L2 BLOCK- 25
3 R 3867 DIAGRAM OUT 4 N.C.
9 R 1 27 2751
2 ERR SCL VIDEO I12 WS 6
R 25 11 PROC.
R1 AM SOUND 28
9 L 4 7840 A/B
SCART 2 L1
10 74HC4053D
7756 F809
A7 LM833D 0328 0328 F811 AUDIO-R
L SNDR-SC2-IN 23 12
6 R3 1 1 14 MON-OUT
SNDL-SC2-IN 6 R OUT 1 13 SNDR-SC1-IN 30 R 5 1 R SNDR-SSP 13 R
8 L 3 L3
3 R L OUT 1 12 SNDL-SC1-IN 31 57
7 R 1 DAC 2 2
2 L 56 3 7 L AUDIO-L
2
4 15 MON-OUT
3 3 SNDL-SSP L
1
SCART 3 3755 DSP A8
8 4 4
SDA ADC 10 11 F810
L DIGITAL ERR N.C F812
SNDR-SC3-IN 20 3756 25
6 R4 9 SOUND 5 5
SNDR-SC3-IN 9 SCL PROC.
5 L4 N.C
3 R SNDR-SC4-IN 19
1 R5 0352 6 6
2 SNDR-SC4-IN 10 +7V7 +7V7
6 L5 ADC TO
SNDR-U_I-IN 18 3 SCART 2 7 7
R6 10 7 CONSTANT 7752 7758
SCART 4 SNDR-U_I-IN 11 16 FDSR-OUT SNDR-SC2-IN 33 A24 LEVEL
L6 L OUT 3 4 HEF4052 LM833D A16
11 SNDL-SC2-IN 34 R 1 8 8
17 FDSL-OUT 5 3 3 1 R -7V7 -7V7
L R OUT 3 SNDR-SC3-IN 36 51 5
6 6 DAC R 9 9 7835
SNDR-SC3-IN 37 L 50 12 MUTE 7865
13 5 7 L N.C
3 R 14 7
1 TUNER L 10 10 SOUND ENABLE
2 A22
A25 SIGNAL
A17 8 SOUND
1 R R 11 11
ENABLE
2 48 F813
DAC
L 47 L 9 (2X) POWER VALID

A23 TO
SCART 1 10 (2X)
CENTER SELECT 7853
R AV8
N.C.
60 CONTROL
FRONT VIDEO AUDIO SOURCE DAC
FP1 PANEL
AV7 AV8 K8 SELECT SNDL-FROM-IN 40
L 59
N.C.
SNDR-FROM-IN 39

0309 0309 7810
TEA6422D 0373 0373
F706 F821
7 7 1 1 1
SNDL-FRONT 11 15 SNDR-SUB-OUT SNDR-U-1-IN
L L1 R OUT 2
9 9 3 3 2 SELECTOR SWITCHES
SNDR-FRONT 18 14 SNDL-SUB-OUT SNDL-U-1-IN
R R6 L OUT 2 M2
F709 F827 0352

7 10
FDSL-OUT
11
INPUT FDSR-OUT
SD SD. A7 VIDEO K2 OUTPUT
CONN. 0333
0305 0305 0333
F707 TUNER + 7621 FRONT PANEL
SNDL-SD 3 3 5 12 SNDL-MAIN-OUT
9 9
SNDL-FRONT-IN
M1 IF M5 AUDIO PART (DOUBLE WINDOW PANEL) 7622 7775
7620
TDA7309 7757
FP
L L1 L OUT 1 HP-OUT
(DOUBLE 7600 HEF4053 M26 M27 NJM4556AM M29 0344
TD A9820T/V1 FM-SOUND 17 0344
11 11
R
SNDR-SD 9 9 24
R2 R OUT 1
13 SNDR-MAIN-OUT SNDR-FRONT-IN WINDOW) 1600-1603
M24
13 14 18 2 5 7 1 1
3 MUTE L
SEE AM-SOUND 20 2 2
M25 12
F708 BLOCKDIAGRAM SIF 1
VIDEO FM 3 1 3 3
3822 AUDIO 0346 R
28 PROC. 16 7623
SDA FILTER DETECTOR 8 SNDR
SIF SELEC.
ERR 2 M28 M30
3824 1 FRONT-IN
AUDIO 27 31 NC 14
AV8 SCL
TO 0348 3
SNDL
FRONT-IN
13
MUTE