Btsc-Ndbx Stereo Decoder - Philips L01.1U Service Manual

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Circuit Diagrams and PWB Layouts
Mono Carrier: BTSC NDBX Stereo Decoder
1
BTSC - NDBX STEREO DECODER
A
SC1_RINA
A10-48
B
C
QSS_AM_DEM_OUT
A5-42
D
E +8V
SC1_LINA
A10-47
SCL
A7-13
F
SDA
A7-14
1
L01.1U AC
2 3 4
2865
2u2
2864
2u2
2884
3867
3K3
2u2
2885
220n
2803
220n
7861
TDA9853H 2 3 42
A12
2862
4V 4
STEREO DECODER
COMP
2u2
3862
35
4V
FDI
15K
DET AND
4V 33
VOLTAGE
FDO
CTRL AMP
32 31 30
5861
10u
A13
3866
100R
A14
3865
100R
2 3 4
7. 60
5 6
A12 A13 A14
200mV / div AC 10V / div DC 10V / div DC
1ms / div 20µs / div 20µs / div
43 5 1 6 25 26 1 2 17 22 29 34 44 23 24
DEMATRIX AUTOMATIC VOLUME
INPUT
L+R
+ MODE
VOLUME AND RIGHT
SELECT
SELECT CTRL
LEVEL CONTROL
L-R
FIL LOGIC VOLUME
AND I2C LEFT
SUPPLY
REF TRANSC CTRL
40 39 38 37 11 10 13
41 28 27 36 9 8 7
5 6
Published in Heiloo Holland
7 8 9
A15 A16
+8V
10V / div DC 10V / div DC
1ms / div 1ms / div
*
*
* 3891
*
4863 7891
BC847B
100R
4893
RES
*
*
2870
47n
21 20 19
A15
TONE
OUTR 18 4V
RIGHT
CTRL
A16
TONE
OUTL 16 4V
LEFT
CTRL
+8V
14 15
2869
47n
*
*
* 3894
*
*
4861 7892
BC847B
100R
4894
RES
*
7 8 9
22/11/2016
10
1861 C4
2803 C4
2862 C2
2863 C2
2864 B4
2865 B4
2866 E6
2867 E7
2868 E7
A
2869 D7
2870 C7
2871 C7
2872 C7
2873 B7
2874 E5
2875 E5
2876 B6
2877 E4
2878 E4
2879 E4
B
2880 E3
2881 E6
2882 E6
* 2892
R-OUT
2883 E4
A13-61
2884 B3
100n
2885 B4
2886 E4
2892 B10
2893 E10
3861 E6
3862 C3
3863 D3
C
3864 D3
3865 F3
3866 F3
Main_OutR
3867 B4
A8-46
3891 B8
3892 A9
3893 C9
Main_OutL
3894 E8
A8-45
3895 D9
3896 F9
4861 E7
4862 D8
D
4863 B7
4864 B8
4893 B8
4894 E8
5861 E3
7861 C4
7891 B9
7892 E9
9891 A9
9892 D9
E
* 2893
L-OUT
A13-60
100n
F
CL 26532119_018.eps
111202
10