Video Processor - Zenith C27A25 Service Manual

1 2
G
COMP-AUD
SHT.3
AGC
SHT.7
A-12
+9V
PIF
R 1 20 6 M
F
1 00
C1202M
R 1 20 4 M
0.01
1 .5 K
25V
B
IF C1201M
R 1 20 5 M
B
SHT.7
A-12 1.5
1 00
1000pF
R 1 20 2 M 50V R 1 20 3 M
1 00 3 90 R1207M
B
B
R1208M
E
FSC
SHT.9
C-12
FBLK-PIP
SHT.10
B-12
ROSD+PIP
SHT.10
D-12
D
GOSD+PIP
SHT.10
C-12
BOSD+PIP
SHT.10
C-12
2C5
58-526-04
C
1
TO
2
VIDEO
3
OUTPUT
4
MODULE
A
HALFTONE
B
SHT.4
B
G- 12
C2240M
PROV
50V
VRAMP
SHT.6_F- 1
SHT.10_E-1
SHT.4_C -12
SCL
SHT.3_C -12
SHT.7_A -12
SHT.10_D- 1
SHT.4_B -12
SDA
A SHT.3_C -12
SHT.7_B -12
A
SHT10_E-1
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER "X" IN THEIR
CM154
COMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
3 4
R 1 20 1 M
1 0K
L1201
C1200M
R1200M
0.01
20-4278B
12K
25V
B
L1200
R 1 20 9 M
U1200 R 1 21 0 M
0.82uH
100
4277-09A 224-160
C1204M 1 0K
1
4
C1205M
C
6.8 0.01
1000pF
R1211M
25V
50V C1206
Q1200 2
5
1 0K B
3 0.47uF
121-1261A
B
E 50V
0.8 B
2 2
+9V +9V
C1203M VSW PIF
1000pF
3 3
50V
C1211M
B B C1210
C1209M
0.01uF 470uF
1000PF
C1212
25V 16V
C1207
0.47uF
0.47uF
50V B B
R 1 23 1 M 3 .3 K B 50V
CR2201
C2202M
D2212M
12pF C1234M
50V 3.58MHZ 0.022uF 103-00461A
2 24 - 27 A 16V
R 2 20 1 M B
C2260M
120
C2203M
PROV
C2261M
0.1
C2204M
50V
PROV
C2262M
0.1
C2205M
50V
PROV
C2263M
0.1
50V
+9V PROV
SW
R2210
5 60
C2206M
0.01
25V C2207
4.7uF
50V
R2213
R
2 20 R2218
G
2 20
R2258M R2257M
910 910
D2209 D2208
103-461A 103-461A
R2222
B
2 20
R2255M D2207 R2256M
0 103-461A 910
C
Q2207
121-1310A
E
R2214M
27K
+9V
SW
R2216
10
C2209 C2210M
100uF 0.022
16V 16V
D
R2220
1 00
R2223
1 00

Video Processor

5 6
ICX2200
221-1165 C1229
BLOCK DIAGRAM No.
5
10uF
C1227M
SEE SHEET No. 11
50V
27pF
50V
TP1246
1 56
0 C1216M
0 N.C. N.C.
120PF
50V
2 55
3.7 2.8
SND -OUT
EXT-AUD
TP1201 C1213M
3 54
4.0 5.7
RF-AG C
DE-E MPH
27pF
C1214
4 53 50V C
3.2 2.8
SIF
AUD IN C1215M
4.7MF
TP1200 47PF
5 52 50V 50V
4.6 0
AG CFIL
LIMITER
R 1 21 4 M R1223M
0.0 6 51 U1201
P R O V PIFGN D 0 1 K
0 224-139-1A
SIFGN D
C
C C
B B B
2.0 7 50 7.8
PIF-IN
L1207
PIFTAN K
C1228M
3
2.0 8 49 4
PR O V
PIF-IN
+9V
2
5 0V
PIFTAN K
7.8 SIF
6 1
8.7 9 48 2 0- 4 50 6 A
PIFVCC
SIF/VCC
8.8 TP1202
R1213M 4.4 10 47 C1224 C1225M
50V 3.7
LOO PFIL
100uF
0 .0 1
TV/DET
7 50 16V
2 5V
6.1 11 46
8.8 C C
APCFIL
VCC
12 45
4.7 1.8
VCXO
CIN
TP1203
13 44
0.0 3.3
GN D
AFT
14 43 C2231M
A 0.0 4.5
FBLNK
YIN
0.1uF
C2226
15 42 50V
4.7 4.6 R 2 24 4 M
RO SD 13
DC
1 00 K
1MF
16 41
4.6 3.2 50V A
GO SD
VSW-OUT
C2225
C2243M
+9V
17 40 0.01uF
4.6 5.1
BO SD
F
10uF 50V
BLK/DET
R 2 24 2 M
18 39 C2224M
3.6 1.6
D-VC C
4 70 K
VIN
0.01uF R 2 23 9 M
19 38 16V
2.2 3.3
RO UT
C2222
1K
ACL
0.1uF
C2223 50V
20 37
2.2 3.2
GO UT
TV-IN
1uF
21 36 50V
1.6 2.8 R 2 23 6 M
BO UT
ABL
10K
C2221M
22 35
+9V 0 0.1uF
VPULSE
SW 50V
DG ND
CR2202
R2212 23 34 5 03 K H Z
8.7 R2 23 1 M
NFB
32FH
5.7
100 3 90
C2216
24 33 2 24 - 17 8
5.0 7.2
VRAMP D
HAFC
1 uF
C2208 5 0V
25 32
6.0 1.2
VSEPFIL
H-O UT
2.2uF
R 2 22 7 M
26 31
50V 4.8 0.33
HVC C
1 K
SYNC
D
27 30
4.8 1.1
SCL
FLYBAC K
C2211M
C2214M
28 29 R 2 22 4 M
SDA
PRO V 47pF
1 5K
SHU TDOWN
50V
5.0
D
D D
1.7
D
C2213M
0.01uF
25V
D
Luma (Y-IN)
C2212M
PRO V
D
6-5
7 8
+9V +9V +9V +9V
+9V
SIF SW SW PIF
L1203 SIF L1205
10UH 120uH
C1217M C1226
L1202 R1222M
0.01 100uF
10uH 4.7K
25V 16V
L1204
8.8 C +9V
C
SIF
Q1201
3.7 B 12UH
121-1310A
C
E
3.0 R 1 22 4 M R 1 22 5 M
B
R 1 220 M
2 20 7 50
R 1 22 1 M
1 0K U1202
E
+9V +9V 3.0
1 K 4.5MHZ
F SW
L1206 2 24 - 23 A
C C
C
R1226M
1 K
JUMP ER
C1221M
C1219M C1220
20-
0.01 220uF 0 .0 1
25V 16V 2 5V
14
R1227M
A A
A 1 .5 K
C2249M C2247M
R 2 24 7 M
220pF 100
.01uF
C2248M
50V
+9V R2249M 50V R2248M L2202
27pF
F 39K PROV 4.7uH
50V
R1228M
100K
R 1 22 9 M
1K
C1222M C1223M
R1230M
1000PF .01
39K
50V 25V
C C2250M
C C
C2252M
330pF 50V R2250M
120pF 100
50V
L2201 C2251
15uH PROV
+15
ABL
Q2208
121-1311A
R2251M R2264
E
16V
47 1M
R 2 26 5 M
+15 B 10K
ABL +15
C C2241
D2205 R2263
ABL
33uF
330K
E 25V
103-461A R 2 24 1 M
10K
R 2 240 M E E
R 2 23 8 M
1.1 1.5K
390
Q2205
E
121-1311A
D2202 E D2203 1.8
2.7
103-461A B 1.6 12.9
103-461A
C
R 2 23 7 M
Q2204
+9V R2234M
121-1310A
R2233
SW C2218 10K
1K
C2217M 12.2
10uF
100
50V
0.01 E C2219 R 2 23 0 M R2232
R 2 22 9 M
25V PROV 100K 1.5K
9
16V
2 .2 K
E E
R2228 E
4 70
C2242M
11
0.0012
R 2 225 M R 2 22 6 M
50V
3 .3 K 4 .7 K
+9V
WF11
SW
C2215M
D2201 22 V
20 uS
470PF 103-461A
50V
Green Drive
Red Drive
Chroma (C-IN) R G
ABL
Horizontal
Vertical
ALL SYMBOLS WITH "M" ON END OF DESIGNATOR
INDICATE SURFACE MOUNTED COMPONENT
9 10
COMP-AUD2
SHT.7
C-12
WF14
0.15V
20 uS
8.8
Q1202
121-1310A
2.3
C2237M
47pF
50V
TV-IN
SHT.7
F-1
C
C-OUT
SHT.7
F-1
C2246M
PROV
0
AFC1
SHT.4
E-1
Y-OUT
SHT.7
G-1
VIDEO-SYNC
SHT.7
F-1
+15
ABL
D2204
103-00461A
R2260M
47
R2235
560
1/2W
ABL
SHT.6
B-1
C2220
0.1uF
50V
E
VERTICAL-ABL
SHT.6
A-1
HORZ-DRIVE
SHT.6
C-1
FLYBACK
SHT.6_G -1
SHT.4_B -1
SHT.10_F-1
SD-MAIN
SHT.4
C-1
SHUTDOWN
SHT.6
B-1
Blue Drive
B
XC SHEET 5