Audio Processor - Zenith A19A02D Service Manual

1 2 3
PWRCONT
SHT.22
PWR-CTL
SHT.22
G
4.14
C1403M
4.15
0.015
16V
C1406M C1431M 4.14
0.022 0.01
16V 25V
4.14
TP451
C1408
R1423
F
4.15
TP450
2.2K
4.7uF ZD1401
50V
103-279-18A
4.15
4.12
4.12
R1424 C1410
4.12
2.2K
4.7uF
ZD1402
50V
103-279-18A 4.12
0.65
E C1432
4.7uF
R1409M 0.71
50V
1M
C1415
R1405M 4.07
3.9K
1uF
C1414
50V 1.68
10uF
C1417
50V 4.14
10%
LOW-LEAKAGE 10uF
25V 4.13
LOW-LEAKAGE C1419
1.72
3.3uF 10%
D R1407 C1422
50V 4.13
3K 0.047
50V C1424
R1408M 4.08
3.3K 2700pF
50V
4.14
C1426
4.09
10uF
C1428
25V 3.8
4.7uF
50V 4.14
C
C1427
4.15
10uF
25V
B
VALUES IN ( ) INDICATES SPEAKERS OFF
A
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER "X" IN THEIR
COMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
GA3 AUDIO PROCESSOR
4 5 6
C1401M
48 1 4.15
BASSL2
BASSL1
&20321(17
0.015
16V C1402M
47 2 4.14 5() '(6
TRE-R
BASSR2
6800pF
C1404M 50V
46 3 4.14
TRE-L
BASSR1
6800pF
50V
45 4
SURRIN
4.12
SURRTC
44 5
SURROUT 4.15
TVOUT-L
43 6
4.15
LSOUT-R
TVOUT-R
42 7 4.15
LSOUT-L
AUX2-L
41 8
0
AUX2-R NC
40 9
4.92 R1401
AUX1-L SDA
100
39 10
4.92 R1402
AUX1-R SCL
100
C1435M C1434M
38 11
0 PROV PROV
VLTC DGND
37 12
0
VLDC SAD
36 13
4.12
MAININ
VCAWGT
R1425M
C1416
35 14
4.01 1M
MAINOUT
VCATC
C1421
10uF
34 15
25V
VCAIN NC 0 5600pF
50V
33 16 C1420
4.15 R1406M
PCINT1
VEOUT
100K 0.012
32 17 50V
4.00
PCINT2
VETC
C1418
31 18
5.33
PLINT
VEWGT
1uF
C1436
30 19 50V
4.13 R1421M
VE COMPIN
1uF 8.2K
C1413
29 20 50V
1.28
SAPIN VGR
R1422M
10uF
10K
28 21 50V
1.27 R1404M
IREF
SAPOUT
61.9K
27 22 1%
0
GND
NOISETC
C1425
26 23 +9V
4.55
SAPTC
SW
STIN
4.7uF
25 24 50V
8.95
VCC
SUBOUT
C1430 C1433M
IC1400 100uF 0.022
16V 16V
221-01127
Block Diagram #12
Sheet 28
Composite Audio
COMPONENT LEVEL MODULE
009-01996
REPAIR ONLY
FEATURES MTS STEREO
7 8 9
3257 78%( 121 3257 78%(
9$/8( 9$/8(
C862
50  . .
100uF
16V
50  . .
R854M
150
PORT TUBE
C861 MODELS ONLY
R861M
10K
10uF
C851
50V R851M
10K *
*
10uF
C855M
C865M
R852M R862M
50V
6800pF
6800pF
P/L
P/L
50V
50V
C852
100uF
R864M
+9V
SW
R1456M
8.93
10K
C
B
Q1405
121-1310A 7.78
C1447
E
R1457M 330uF
7.08
100K 16V
R1444M
220
R1441M
1.5K
6.44
E
Q1402
14.02
121-1311A
B
5.75
C C
C1449
2.93
R1491M 2.23 B
Q1401
121-1310A
2.2K
1uF
E
50V 1.59
R1445M ZD1403
R1442M
C1440
1K
103-279-18A
750
0.01
50V
C1442
R1443M
4.7uF
1K
50V
R1452M
220
R1449M
1.5K 6.44
E
5.75
Q1404
121-1311A
B
5.75
C C
C1448
2.91
R1490M 2.23 B
Q1403
121-1310A
2.2K
1uF
E
50V
1.58
R1453M ZD1404
C1444
1K
103-279-18A
0.01 R1450M
50V 750
C1445
R1451M
4.7uF
1K
50V
009-01997 009-01997-01 009-01998
MTS STEREO MTS STEREO MTS STEREO
ALL SYMBOLS WITH "M" ON END OF DESIGNATOR
6-23
INDICATE SURFACE MOUNTED COMPONENT
10 11
PWRCONT
PWR-CTL
EXT-L
EXT-R
R843
18.84 (0.065)
330
C
+18V
B 0.016 (0.69)
AUD
C843
Q800
100uF
121-1310A
E
25V
0
C842
C841
0.1 1000uF
MUTE
50V 25V 9S4
C864
19.08
3 9
1000uF
1 C863 1
0.58
19.16 25V
10 0.1
2 2
50V
0.4 9.64
TO_TV
3 SPEAKERS
R863
5
0.37 3.3
4
9.67
0.58 6
058-00526-04
7
4
C854
0 0
1000uF
16V C853 25V
0.1
50V
150
R853
IC804
3.3
221-00598-01
126-03684
Block Diagram #9
Sheet 28
C1443
R1446M VM-OUT-L
2.2uF 100
50V
C1446
R1454M VM-OUT-R
2.2uF 100
50V
SDA
SCL
COMP-AUD
009-02041
MTS STEREO
12
SHT.24
SHT.24
SHT.24
SHT.23
SHT.24
SHT.24
SHT.24
SHT.24
SHT.24
SHT.24
GA SHEET 23