Jack And Switch Circuit - Zenith C27A25 Service Manual

1 2
G
Y-MICRO
SHT.4
B-1
+9V
SWF
Q2900
121-1310A
C
B
E
Y-OUT
SHT.5
D-12 R2900M C2900M
R2901M
120 PROV
150
F
VIDEO-SYNC
SHT.5
D-12
C-OUT
SHT.5
E-12
TV-IN
SHT.5
F-12
C2917M
PROV
JP002
A-19268
E
EXT-L
R2916M
EXT-R
47
R2910
75
R2915M
VID-IN
47
R2914
75
D
R2906M
C
47
R2909
Y
75
Y/C
JP001
A-19267
Y/C R2919
C
1K
R2913
75
VID-IN
R2912
75
VMO-R
B
R2911
75
EXT-R
VMO-L
EXT-L
A
SHT.6 VM-OUT-L
C-12
VM-OUT-R
SHT.6
C-12
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER "X" IN THEIR
CM154
COMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.

Jack and Switch Circuit

3 4
+9V
SWF
R2926M
C
220
+9V
SWF
E
+9V
C
SW
R2927M
Q2901 B
R2929M
121-1310A
1K C
E
B 390
Q2903
R2902M 121-1310A
E
150
R2903M
R2933M
270
150
L2902
R2934M
220
PROV
C2918M
R2921M
PROV
10K
R2932M
1k
C2803M
R2803
C2901
0.1uF 5.6K
16V
10uF
C2802M
R2802
50V
5.6K
0.1uF
VC1
16V
C2908
ZD2901
5.1V
5
1uF 50V
103-279-10A
C2905
4
1CV
3
1uF 50V
ZD2900
5.1V
2
103-279-10A
C2910M
1 5
ZD2905 0.001
4
5.1V 50V
C2920M
103-
3
PROV
R2925
2
1K
1
C2921M
PROV
C2903
1uF
50V
R2917
47 C2909M
ZD2903
9.1V
279-00018A .001
C2922M
50V
R2920
PROV
47
ZD2906
9.1V
279-00018A
C2902
R2918
1uF 50V
47
ZD2904
7.5V
C2915M
279-00015A
0.01 50V
C2800M
R2800
5.6K
0.1uF
16V
C2801M
R2801
5.6K
0.1uF
16V
5 6
Q2902
121-1310A
B
R2904M
R2928M
0
1K
R2905M
1k
IC2900
221-01438
L2901
1 48 R2908M C2914M
YOUT1 TRAP
180uH
680 12pF
C2805M 50V
2 47
GND ROUT1
0.1uF
3 46
16V
COUNT1 VOUT1
4 45 C2804M
LTV LOUT1
0.1uF
5 44 C2911M
16V
TV CIN1
0.001
C2907
6 43
50V
RTV BIAS
10uF
C2906
7 42
50V
V1 YIN1
10uF
8 41
R2907M 50V +9V
LV1 MUTE
SWF
1K
L2900
9 40
Y1 VCC
18uH
C2913
10 39 R1325M
47uF
RV1 VOUT2
16V
68K
11 38
C1 ROUT2
Q1320
C2927M 121-1310A
12 37 C
S2-1 YOUT
B
PROV
13 36 C1324M
E
S-1 LOUT 2200pF
50V
14 35 C2926M
V2 COUT
PROV
C2925M
15 34
LV2 DC-OUT
PROV
16 33 R2935
Y2 SDA
220
17 32 R2930
RV2 SCL
100
18 31 R2931M
C2 ADR
220
19 30
N/C RV4
C2904
20 29
V4
S-2
10uF 50V
21 28
WT1200
V3 LV4
175-2770
22 27 C2924M
LV3 S-3 1
PROV
23 26 C2923M 2 TP1204
Y3 S2-3
PROV 3
24 25 C2916M
RV3 C3 4 R1218M
0.01 50V
5 100 R1216M
6 100
7
8
9
10
11
C1231 C1232M
100uF 1000pF
50V
50V
6-7
7 8
+5V +9V
TUNE SW
L1300
L1301 10uH C1300
10uH 100uF
16V
C1302 C1303M
470uF 1000pF
16V
50V
+33
V
C1304
10uF
ZD1300 +9V
50V
33V SW
0.5W
L1302
56uH
+5V
C1306
TUNE
100uF
16V
R1321M
+9V
100
SW
C1321M
R1300M
1000pF
C1322 E 1.5K
C1320
Q1321 50V
4.7uF
R1320M
Q1300
121-1311A
50V
121-1311A
B
330 E
1uF
R1301M
C R1322M
C1323M R1324M
50V
100K
B
470
2200pF 3.9K
R1326M C
R1323M
50V
10K
12K
C1233
4.7uF
50V
+5V
This schematic applies to
TUNE
the following XC models:
L1230
C27C35T(F)
PROV
C1230
C27C41T(F)
470uF +33
16V V
LGC29C35TM
ZD1200
33V
0.5W
ALL SYMBOLS WITH "M" ON END OF DESIGNATOR
INDICATE SURFACE MOUNTED COMPONENT
9 10
RIGHT-SW
SHT.3
E-1
CV-COMB
SHT.9
F-12
LEFT-SW
SHT.3
E-1
C-COMB
SHT.9
D-12
Y-COMB
SHT.9
E-12
SCL1
SHT.4
A-12
SDA1
SHT.4
A-12
WT1300
175-2705
C1301M 1
1000pF
50V 2
3
4
5
R1302M
100 6
R1304M
100 7
8
C1305M
9
1000pF
50V
TP1300 10
11
TP1301
12
C1307M
.01
R1289
13
25V
330
14
15
16
AFC2
SHT.4
C-12
COMP-AUD2
SHT.5_G-12
SD-PIP
SHT.4
B-1
CV-PIP
SHT.10
F-12
SHT.3
SDA
SHT.4
SHT.5
SHT.10
SHT.3
SCL
SHT.5
SHT.10
AGC
SHT.5
G-1
IF
SHT.5
F-1
XC SHEET 7