Zenith C27A25, Service Manual

Page: 52 / 59

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
A
B
C
D
E
F
G
1 2 3 4 5 6 7 8 9 10
6-5 XC SHEET 5 CM154
Video Processor
+9V
SW
MODULE
OUTPUT
VIDEO
TO
1.8
12.9
12.2
1.6
2.7
1.1
5.7
3.3
3.2
3.3
0.33
1.1
1.7
4.8
4.8
8.7
2.2
2.2
4.0
22 V
0.15V
WF14
20 uS
WF11
20 uS
0.8
1.5
0
2.8
2.8
0
0
7.8
7.8
8.8
3.7
8.8
1.8
4.5
4.6
5.1
1.6
3.2
2.8
0
5.7
7.2
1.2
6.8
8.8
3.0
2.3
8.8
3.7
3.0
5.0
6.0
5.0
1.6
3.6
4.6
4.6
4.7
0.0
0.0
4.7
6.1
4.4
8.7
2.0
2.0
0.0
4.6
3.2
3.7
0
A
25V
0.01
1 K
C-12
FSC
SHT.9
B
B
B
PRO V
1 0K
1 00
25V
0.01
B
P R O V
0.47uF
50V
B
1 0K
2 2
D
B
50V
1000pF
B
1 00
25V
0.01
PIF
+9V
1K
B
12K
50V
1000pF
224-139-1A
0
B
1 00
B
50V
1000pF
3 90 1 00
B
0.47uF
50V
B
50V
1000PF
25V
0.01uF
B
A
PIF
+9V
D
50V
12pF
1K
C
50V
0.1uF
VSW
+9V
3 .3 K
PRO V
16V
0.01uF
10K
A
E
E
16V
PROV
B-12
FBLK-PIP
SHT.10
E
ABL
+15
0
5 60
1
2
3
4
SW
+9V
390
25V
0.01
D
10K
1 0K
D
2.2uF
50V
D
27K
4.7MF
50V
16V
0.022
C
120uH
C
SW
+9V
6
4
1
2
3
A-1
SHT.6
VERTICAL-ABL
SHT.7_A -12
SHT.10_D- 1
SHT.3_C -12
SCL
SHT.4_C -12
SHT.7_B -12
SHT10_E-1
SHT.3_C -12
SDA
SHT.4_B -12
A-12
SHT.7
AGC
A-12
SHT.7
IF
SHT.3
COMP-AUD
E
33uF
25V
C
10K
220uF
16V
C
E
B
C
1 2 3
20-4278B
E
B
C
SIF
+9V
C-1
SHT.4
SD-MAIN
C
1 K
4.5MHZ
2 24 - 23 A
50V
47PF
50V
120PF
C
4.7K
C
1 K
2 20
E
B
C
7 50
1 K
C
1 .5 K
5 0V
PR O V
10uF 50V
2 5V
0 .0 1
SW
+9V
SIF
+9V
A
A
25V
0.01
1 00
C
A
SW
+9V
25V
0.01
C
C
2 5V
0 .0 1
50V
1000PF
39K
C
1 00 K
A
100K
100
1 uF
5 0V
4 70 K
3 90
D
10K
D
E
1 .5 K
E
0.47uF
50V
13
B-1
SHUTDOWN
SHT.6
D
50V
47pF
E
1 5K SW
+9V
C-1
HORZ-DRIVE
SHT.6
100K
SW
+9V
11
F
+9V
25V
0.01
50V 330pF
50V
47pF
B-1
ABL
SHT.6
SW
+9V
560
1/2W
1K
9
1.5K
910
1uF
50V
50V
27pF
ABL
+15
4.7uH
ABL
+15
E
PIF
+9V
14
910
E-1
SHT.4
AFC1
SHT.10_F-1
SHT.4_B -1
FLYBACK
SHT.6_G -1
SHT.10_E-1
VRAMP
SHT.6_F- 1
2 20
F
+9V
F
+9V
910
103-461A
3 3
0.01uF
16V
E
B
C
121-1310A
2 .2 K
B
E
B
C
121-1310A
50V
0.1
D
50V
0.1
50V
0.1uF
1 0K
50V
0.0012
B
1MF
50V
2 20
4 70
100
F-1
SHT.7
VIDEO-SYNC
SIF
+9V
0.1uF
50V
100uF
16V
E
B
C
F-1
SHT.7
C-OUT
G-1
SHT.7
Y-OUT
PROV
+9V
SIF
F-1
SHT.7
TV-IN
PROV
JUMP ER
10
G- 12
HALFTONE
SHT.4
39K
PROV
ABL
+15
PROV
.01
25V
330K
2 20
50V
470PF
4277-09A
0.82uH
100
3.58M HZ
2 24 - 27 A
10uH
12UH
47
15uH
16V
100uF
25V
0.01uF
4.7uF
50V
47
120
50V
120pF
16V
100uF
50V
10uF
E
0
PROV
50V
220pF
50V
27pF
2 24 - 17 8
5 03 K H Z
29
30
31
32
33
34
35
36
37
38
39
40
41
42
28
27
26
25
24
23
22
21
20
19
18
17
16
15
43
44
45
46
47
48
49
50
51
52
53
54
55
56
14
13
12
11
10
9
8
7
6
5
4
3
2
1
221-1165
N.C.
SND -OUT
RF-AG C
SIF
AG CFIL
PIFGN D
PIF-IN
PIF-IN
PIFVCC
LOO PFIL
APCFIL
VCXO
GN D
FBLNK
RO SD
GO SD
BO SD
D-VC C
RO UT
GO UT
BO UT
VPULSE
NFB
VRAM P
VSEPFIL
HVC C
SCL
SDA
SHU TDOWN
FLYBAC K
SYNC
H-O UT
HAFC
32FH
DG ND
ABL
TV-IN
ACL
VIN
BLK/DET
VSW-OUT
DC
YIN
AFT
CIN
VCC
TV/DET
SIF/VCC
PIFTAN K
PIFTAN K
SIFGN D
LIMITER
AUD IN
DE-E MPH
EXT-AUD
N.C.
5
11
1.5K
C
16V
470uF
100
100
10UH
50V
PROV
D-12
SHT.10
ROSD+PIP
C-12
SHT.10
GOSD+PIP
C-12
SHT.10
BOSD+PIP
1
2
3
4
5
224-160
50V
0.1
PROV
50V
.01uF
1M
50V
0.1uF
PROV
7 50
E
B
C
121-1261A
50V
10uF
4 .7 K
50V
27pF
C-12
SHT.7
COMP-AUD2
SEE SHEET No.
BLOCK DIAGRAM No.
D2203
103-461A
C1200M
R 2 22 7 M
C2212M
R 1 21 0 M
R 1 20 6 M
C1205M
R 1 21 4 M
C1212
R1211M
R1207M
C1204M
R2220
C1202M
R 1 22 9 M
R1200M
C1203M
U1201
R 1 20 5 M
C1201M
R 1 20 3 M R 1 20 2 M
C1207
C1211M
C1209M
C2202M
R 2 23 9 M
C2222
R 2 225 M
C2211M
C2243M
R 2 23 6 M
C2219
R2255M
R2210
58-526-04
2C5
R 2 240 M
C2206M
R 2 24 1 M
R 1 220 M
C2208
TP1201
TP1202
R2214M
C1214
C2210M
L1205
L1207
2 0- 4 50 6 A
C2241
R 2 26 5 M
C1220
TP1200
121-1311A
Q2208
L1201
Q2205
121-1311A
R1223M
U1202 C1215M
C1216M
R1222M
TP1246
R 1 22 1 M
R 1 22 4 M
Q2207
121-1310A
R 1 22 5 M
R1226M
R1227M
C1228M
C2225
C1225M
C1219M
R2223
C1217M
C1221M
C1222M
R1230M
R 2 24 4 M
R 2 23 0 M
R 1 20 9 M
C2216
R 2 24 2 M
R2 23 1 M
D2205
103-461A
R2234M
R 1 20 4 M
C1206
C2214M
R 2 22 4 M
R1228M
C2217M
C2250M
C2237M
R2235
R 2 23 7 M
R 2 23 8 M
R2258M
C2223
C1213M
L2202
R2257M
D2207
103-461A
R2222
R2256M
D2201
R1208M
C2224M
Q1201
R 2 22 9 M
Q1202
C2204M
C2205M
D2202
103-461A
C2231M
R 1 20 1 M
C2242M
C2226
R2218
R2228
R2233
C2221M
C2209
Q2204
121-1310A
C2263M
C2262M
20-
L1206
D2209
103-461A
R2216
R2249M
C2261M
C2260M
C1223M
R2263
R2213
C2215M
L1200
R2212
CR2201
L1202
L1204
R2251M
D2204
103-00461A
L2201
C1226
C2213M
C2207
R2260M
R 2 20 1 M
C2252M
C1224
C2218
C2246M
C2247M
C2248M
CR2202
ICX2200
R2232
C1210
D2208
103-461A
R2250M
R 2 24 7 M
L1203
C2240M
U1200
TP1203
C2203M
R2248M
C2249M
R2264
C2220
C2251
R1213M
Q1200
C1229
R 2 22 6 M
C1227M
Vertical
Horizontal
ABL
Red Drive
Green Drive
Blue Drive
R
B
G Chroma (C-IN)
Luma (Y-IN)
R
B
G
B
16V
0.022uF
C1234M
103-00461A
D2212M
R 1 23 1 M 3 .3 K