Audio Processor - Zenith A19A02D Service Manual

1 2 3
PWRCONT
SHT.11
G
C1401M
4700pF
4.7 1
R1404M
5.6K 50V 3.0
C1403 2
0.22
C1404 3.3
3
1uF
3.3
50V 4
4.4 5
0
6
R1407M 0
7
3.3K
3.8 8
C1409
3.8 9
F
C1410
1uF
R1411M R1410M
47uF 25V 3.8 10
50V 13K 15K
3.8 11
B+
C1412M
R1409M
AUD
3.8 12
1.5K
0.022
R1412 C1411
16V
10K 0.1
4.4
R1402M
Block Diagram #8
PROV
E
Q1400
121-1311A
B
3.8
+15V
C
AUD
0
R1423
E
220(LCS)
150(MTS)
MTS
19
B+
009-01867
AUD WF
1 9
VCC
2
L+R
3 5.1
LOUT
4 5.1
D
ROUT
MTS
5 0
MUTE
STEREO 6
FSAP
ASSY'S 7 0.1 FORCEDMONO
FORCED
ONLY 8 0.2 MS0
MS0
9 10.1 MS1
MS1
10 5.1 SAP-IND
SAP-IND
11 5.1 STEREO-IND
ST-IND
12 COMP-AUD
5.1
MPXIN
13
0
C GND
J1 J1 J1
R1435 C1432
2
AUDIO
LEFT 22K
1uF
1
INPUT ZD1402 50V
R1436M
9.1V
PROV
78-NEW
103-279-18A
B
R1437 C1433
2
AUDIO
RIGHT 22K
1uF
1
INPUT ZD1403 50V
R1438M
9.1V
PROV
78-NEW 103-279-18A
2 R1447
EXT
VIDEO
47
INPUT ZD1404
1 R1446
9.1V
75
78-NEW 103-279-18A
A
COMPONENT LEVEL MODULE
009-01789 009-01789-01 009-01790 009-01790-01 009-01791 009-01791-01 009-01791-02 009-01831
REPAIR ONLY
FEATURES MONO
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER "X" IN THEIR
COMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
GA2 AUDIO PROCESSOR
4 5 6
C1423
1uF
24 3.3
3.3 50V CR1401
23
224-179
3.7 378KHz
22
0
21
B+
20 4.8
AUD
7.5
19
C1418M
3.0 C1420M
18
0.022
C1417
2700pF 50V 16V
17 3.0
C1416
16 3.8 0.1
10uF 50V
15 3.0
14 3.0
C1415
2.2uF
13 3.1
50V
IC1400
221-00907
Sheet 17
B+
AUD
ZD1400 C1490
7.5V-9.1V 22uF
P/L 50V
WF19
1.56V
1 mS
AUX-L
C1441
4700pF
50V
C1438M
PROV
50V
AUX-R
C1440
4700pF
50V
MONO LC STEREO LC STEREO LC STEREO LC STEREO
7 8 9
+9V
SW
9
C
R1420
B
Q1402
121-1310A
10K
4.6
E
3.9
R1421
IC830
1K
LA4285
221-1163
DC
AMP
VOL
C1434M
PROV
50V
C1451
R1452M
R833M
27K
1uF
3.3K
50V
C830
C1439M
C1435M
R1453M
10uF
PROV 4700pF
PROV
50V
50V 50V
R832
1K
IC850
221-1163 LA4285
DC
C1436M
AMP
VOL
PROV
50V
C1450
R1450M
6.2
27K
1uF
R853M
C1437M
R1451M
50V
4700pF
PROV
3.3K
50V
C850
10uF
50V
R852
1K
009-01831-01 009-01831-02 009-01976 009-01976-01 009-01977 009-01977-01
LC STEREO MTS STEREO MTS STEREO MTS STEREO LC STEREO LC STEREO
ALL SYMBOLS WITH "M" ON END OF DESIGNATOR
6-13
INDICATE SURFACE MOUNTED COMPONENT
10 11 12
COMP-AUD
SHT.13
PWRCONT
SHT.13
FORCEDMONO
SHT.13
STEREO-IND
SHT.13
MS0
SHT.13
MS1
SHT.13
SAP-IND
SHT.13
AUXSWITCH
SHT.13
VOL-CTRL
SHT.13
IC801
MONO
+15V
221-981
AUD
ASSY'S
15.2 R805
ONLY
0 10
C804M
C805
1W
0.01
1000uF
25V
25V
5 1
9M4
0
4
C802
C806M
2
R802M
1000pF
4.7K
50V 7.3 2
470uF
0.52 3 C803
16V
0.1 1
6 8 7
58-526-02
C801
R803
100uF
0 0 0
4.7
16V
R801M
MONO
680 SPEAKER
20
WF
WF20
4.2 (MAX)
0 (MIN)
B+
AMP
15
Composite Audio
C833
6.4
470uF
C832
16V
0.1
C831
50V
47uF
25V
9S4
R831
1
1
2
3
4
B+ 58-526-04
AMP
TO T.V. SPEAKERS
15
C853
6.4
470uF
C852
16V
0.1
C851 50V
47uF
25V
R851
+15V B+
1
AUD AMP
R820
0.51
C821M
1/2W C820
0.01
2200uF
25V
25V
EXT-VIDEO
SHT.13
MONO MONO
GA SHEET 13