Service manual
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIR
COMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
ALL SYMBOLS WITH “M” ON END OF DESIGNATOR
INDICATE SURFACE MOUNTED COMPONENT
6-13
GA SHEET 13
GA2 AUDIO PROCESSOR
1211109
G
F
E
D
C
B
A
87654321
+9V
SW
STEREO-IND
FORCEDMONO
AUX-L
AUX-R
COMP-AUD
MS0
MS1
SAP-IND
4.2 (MAX)
0 (MIN)
WF20
1.56V
1 mS
WF19
15
6.4
0
6.3
6.5
4.2
3.9
6.2
0
6.2
15
6.4
0
6.3
6.5
4.2
3.9
6.2
0
6.2
0
15.2
7.3
000
0
0.52
3.3
3.3
3.7
0
4.8
7.5
3.0
3.0
3.8
3.0
3.0
3.13.8
3.8
3.8
3.8
3.8
0
0
4.4
3.3
3.3
3.0
4.7
3.8
4.4
0
9
5.1
5.1
0
0.1
0.2
10.1
5.1
5.1
5.1
0
4.6
3.9
9
SPEAKER
MONO
AMP
AMP
VOL
VOL
DC
DC
ONLY
ASSY’S
MONO
ONLY
ASSY’S
STEREO
MTS
TO T.V. SPEAKERS
5
7
4
1
2
86
3
221-981
10uF 50V
16V
0.022
50V2700pF
0.1
0.1
10K
AUD
B+
E
B
C
1.5K
16V
0.022
1uF
50V
1
2
78-NEW
INPUT
LEFT
AUDIO
50V
4700pF
0.22
5.6K
47uF 25V
PROV
3.3K
PROV
PROV
15K
1uF
50V
100uF
16V
13K
2.2uF
50V
AUXSWITCH
SHT.13
EXT-VIDEO
SHT.13
1
2
EXT
VIDEO
INPUT
78-NEW
VOL-CTRL
SHT.13
AMP
B+
1
2
3
4
16V
470uF
0.1
4.7
1
2
COMP-AUD
SHT.13
0.01
25V
1K
AUD
+15V
1
2
78-NEW
INPUT
RIGHT
AUDIO
1uF
50V
1
0.01
25V
AUD
+15V
25V
1000uF
9.1V
47
75
50V
1uF
9.1V
PROV
22K
10
1W
50V
1uF
9.1V
PROV
22K
1K
AMP
B+
224-179
378KHz
1uF
50V
WF
20
50V
4700pF
27K
4.7K
2200uF
25V
AMP
B+
16V
470uF
0.51
1/2W
50V
1000pF
1
16V
470uF
50V
0.1
150(MTS)
220(LCS)
3.3K
50V
0.1
25V
47uF
50V
10uF
25V
47uF
50V
10uF
E
B
C
1K
4700pF
50V
10K
50V
4700pF
50V
PROV
P/L
7.5V-9.1V
AUD
B+
AUD
+15V
27K
22uF
50V
1uF
50V
50V
PROV
680
WF
19
PWRCONT
SHT.11
13
12
11
10
9
8
7
6
5
4
3
2
1
009-01867
GND
MPXIN
ST-IND
SAP-IND
MS1
MS0
FORCED
FSAP
MUTE
ROUT
LOUT
L+R
VCC
FORCEDMONO
SHT.13
STEREO-IND
SHT.13
PWRCONT
SHT.13
SAP-IND
SHT.13
MS1
SHT.13
MS0
SHT.13
AUD
B+
24
23
22
21
20
19
18
17
16
15
14
1312
11
10
9
8
7
6
5
4
3
2
1
221-00907
Block Diagram #8
Sheet 17
B+
AUD
10
9
8
7
6
5
4
3
2
1
LA4285
4700pF
50V
50V
PROV
50V
PROV
3.3K
10
9
8
7
6
5
4
3
2
1
LA4285
IC801
C1416
C1420M
C1418M
C1411
C1417
R1412
121-1311A
Q1400
R1409M
C1412M
C1404
J1
C1401M
C1403
R1404M
C1409
R1453M
R1407M
R1451M
R1402M
R1410M
C1410
C801
R1411M
C1415
J1
58-526-04
9S4
C802
C803
R803
58-526-02
9M4
C821M
R832
J1
C1450
R851
C804M
C805
103-279-18A
ZD1404
R1447
R1446
C1433
103-279-18A
ZD1403
R1438M
R1437
R805
C1432
103-279-18A
ZD1402
R1436M
R1435
R1421
CR1401
C1451
C1440
R1452M
R802M
C820
C853
R820
C806M
R831
C833
C832
R1423
R853M
C852
C851
C850
C831
C830
121-1310A
Q1402
R852
C1437M
R1420
C1441
C1439M
ZD1400
R1450M
C1490
C1423
C1438M
R801M
MTS
IC1400
221-1163
IC850
C1435M
C1436M
C1434M
R833M
221-1163
IC830
Composite Audio
M ODULE
009-01789 009-01789-01 009-01790 009-01790-01 009-01791 009-01791-01 009-01791-02 009-01831 009-01831-01 009-01831-02 009-01976 009-01976-01 009-01977 009-01977-01
FEATURES MONO MONO LC STEREO LC STEREO LC STEREO LC STEREO LC STEREO
MTS STEREO MTS STEREO MTS STEREO
LC STEREO LC STEREO
MONO MONO
COMPONENT LEVEL
REPA IR ONLY