Video Processor - Zenith A19A02D Service Manual

1 2 3
PWRCONT
SHT.3
COMP-AUD
SHT.3
AGC
G
SHT.3
J1200M
+9V
PROV
PIF
+9V +9V
SW PIF
R1224M
L1208 100
120uH
C1226M L1206
20-3907-25A
R1228 0.01
0.82uH
1.5K 25V
4277-09A
B
6.9
C
C1227M
F R1225M
B
Q1205
0.9
R 100 121-1261A
0.001
E
SHT.3
50V
1.6
G
R1229M R1227M
R1226M
SHT.3
100 470
22
B
SHT.3
B C1228M
FASTBLANK B R1230M
0.001
SHT.3 33
50V
IF
SHT.3 B B
E
WF7
2.6V
WF6
20 uS
3.40V
20 uS
+9V
D
SWF
6
R2260M
WF 470
Q2203
121-1311A
2.7 E
R2213M
2.0
R
R2283M
B
680 220
2C5 +9V
C
SWF
0
1 R-OUT 7
R2261M
WF
2 G-OUT 470
Q2204
TO
2.6 121-1311A
E
3 B-OUT
VIDEO
R2214M
1.9
R2284M
C OUTPUT
4
B
680
+9V
MODULE
C
5 SWF
A 0
C2237M +9V
50-2024-05
0.001 SWF
50V
R2262M
A
470
Q2205
121-1311A
2.7 E
WF
R2215M
2.0
8 R2285M
680 B
220
WF8
C
0
2.8V
B 20 uS
SCL
SHT.3
SDA
SHT.3
COMP-VIDEO
SHT.3
SYNC
SHT.3
AFC
SHT.3
VERT-DRIVE
SHT.3
FLYBACK
A SHT.3
EXT-VIDEO
SHT.3
COMPONENT LEVEL MODULE
009-01869 009-01869-01 009-01870 009-01870-01 009-01871
REPAIR ONLY
FEATURES MONO
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER "X" IN THEIR
COMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
GA1 VIDEO PROCESSOR
4 5 6
R1209
PROV(MONO)
R1221
C1202M
PROV (LCS,MTS)
R1210M
PROV
10K
PROV
C1223M
R1220M "A" FLYWIRE
0.01
TO R1452M
82K
25V
ONLY ON
C1208
9-1950
PROV
B B
C1210M 1
5.6
L1205
PROV
C
20-4278B 3.8 2
R1223
U1201
100
224-160
3
C1224M 2.2
1
4
0.001
R1222M 3.2 4
50V
2
5
3 10K
TP1200
C1225M
5
4.5
0.01
B B
25V
C1229
R1231M
B 0.47uF 0 6
PROV
50V
B B B 7
+9V 2.0
SWF
+9V
R1233M
PIF
10K 8
2.0
R2200M C1231M 9
8.8
3.3K C1236M
C1234M C1233
0.022
1000pF 470uF
1000PF
C1232
16V 10
50V 10V 50V R1232M 4.5
C1235
0.47uF
750
0.47uF
50V
11
B B B 50V 6.2
CR2200
12
4.8
C2202M
12PF 3.58MHZ 0 13
50V 224-27A
14
R2204M A A 0
1K
C2203
R2206M 4.7 15
4.7K 0.1
C2204
50V 16
R2208M 4.8
4.7K
0.1
C2205
R2210M 50V 4.7 17
4.7K 0.1
R2211M R2209M R2207M R2203M
C2207M 50V 18
3.6
680 680 680 PROV
0.01
D 25V 2.0 19
20
1.9
G
2.0 21
+9V
R2238
22
0.8
SW
560
220 VERT-DRIVE
4.9 23
NFB
24
5.0
C2206
R2218M C2211
+9V 1uF
6.3 25
47K
HVCC 50V
2.2uF
26
R2202 D D 50V 8.9
10
B 5.0 27
C2209M
C2208
0.022
470uF
16V
10V
28
5.0
C2240M
120PF
D D
C2241M
120PF
R2219
D
100
R2220
D Block Diagram #3
100
ABL Horizontal Vertical
MONO LC STEREO LC STEREO MTS STEREO MTS STEREO MONO W/JACKS MONO W/JACKS MONO
7 8 9
C1208
PROV
TP1201
C1206M C1202M
33PF PROV
C1209M
50V
C1230
56 PROV
SND-OUT +9V
PROV
REXT 0 C SIF
16V
C
C1207M
55
SND-OUT
LEXT 2.8 C1213M L1201
PROV R1212M
120PF 10uH
C
54 4.7K
4.5
RF-AGC 50V 4277-39A
C1212M
DE-EMPH 9.0
C1211 47PF
53 2.8 C
SIF 50V Q1203
3.9
B
AUDIN 121-1310A
TP1202
P/L
52 E
0
AGCFIL 3.3
LIMITER
R2250M
R1211M 10K R1213M
U1200
51 0
PIFGND 1K
1K +9V
224-00139-01A
SIFGND
SWF
C
C C C C L1204
50
PIF-IN
L1200
PIFTANK 7.9
JUMPER
C1214M C1219M
49 3 C1220
4
PIF-IN PROV 0.01
+9V 220uF
2
PIFTANK 50V 25V
7.9
6 1 SIF 16V
48 20-4506
PIFVCC 14 A A
8.9
SIF/VCC
WF
C1216M C2225M C2250M
47
3.9
LOOPFIL 0.01
TV/DET 25V 180pF
50V
46 C
8.9
APCFIL C2234M
R2243M 120pF L2202
VCC
39K 6.8uH
50V
45
1.8 4277-20A
VCXO
CIN
TP1203
44 1.2 C C C
GND
AFT
43 C2212
4.6 R2266
FBLNK
YIN
47
0.1 R2228M
C2215 WF
42 4.7 R2221M
50V 470
ROSD 13
12
DC 3.9
100K
1uF E
WF
41
3.4 50V A R2227M
GOSD
Q2201
VSW-OUT B
220 121-1311A
+9V 3.4 C
40 5.1
BOSD SWF
R2239M 0
BLK/DET
C2216 10K
39 C2226
1.6
D-VCC
10uF 50V
VIN
A
PROV R2224M
C2230M
38 2.9
ROUT PROV
470K
ACL
37
3.3 R2252
GOUT
T-VIN
47
36 3.0 R2226M
BOUT
C2217
1K
ABL
P/L
+9V
35
0
VPULSE SW
C2220M A
DGND
R2234M
CR2205
34 6.0 R2229M 503KHZ
NFB 0.01 10K
D2203
C2218
103-461A
32FH 25V
P/L
390
D
C2219
33 224-178
7.5 R2230M
VRAMP
9
HAFC A
2.2K
1uF
WF
50V
32 1.2 R2231
VSEPFIL
H-OUT
470
R2259M
31
0.4
HVCC 1K
+9V
10
SYNC
D SW
WF
30 1.5 SYNC
SCL
D2206
R2257M
FLYBACK
103-461A R2233
P/L
29
SDA 1.2
P/L
SHUTDOWN
C2221M
R2235M
PROV WF10
ICX2200
PROV
50V
4.12V
221-01165
20 uS
D D
Sheet 7
Red Drive Green Drive Blue Drive
R G B
009-01871-01 009-01950 009-01950-01 009-01990 009-01990-01 009-01991 009-01991-01 009-01992
ALL SYMBOLS WITH "M" ON END OF DESIGNATOR
6-4
INDICATE SURFACE MOUNTED COMPONENT
10 11 12
SHT.5
PWRCONT
+9V +9V
SW SIF
L1202
10uH
20-3907-12A
C1217
C1215M
100MF
0.01
16V
25V
C C
C
L1203
+9V
12uH
SIF
20-4277-23A
9.0
C
R1214M R1216M 3.2 B Q1204
121-1310A
220 100
E
U1202
2.6
+9V
224-23A
R1217M
SW
180 WF14
C
0.3V
20 uS
R1218M
C1218M
180
0.01
25V
+9V C
A SWF
WF13
1.0V
R2282 R2242M
20 uS
470 470
62pF
R2241M
50V
+9V
3.9 100
E SWF
WF12
3.4 R2240M
1.8V
Q2202 R1235M
B
220
100K 20 uS
121-1311A C
0
R1219 AFC
1K
+9V
C1222
C1221M R1234M
R2232M
SWF
0.1
1000PF 39K
C2214M 470 50V
50V
PROV
C C C
R2222M
50V
390
R2223M
PROV
L2203 R2225M
PROV PROV
C2210M
PROV
EXT-VIDEO
C2227
VERT-DRIVE
1MF
SHT.5
50V
D2202
NFB
103-461A
SHT.5
HORZ-DRIVE
D2204
SHT.5
JUMP
WF9
0.78V
SHUTDOWN
20 uS
SHT.5
11
WF
FLYBACK
SHT.5
WF11
17.5V
20 uS
ABL
SHT.5
Composite Audio
MONO LC STEREO LC STEREO MTS STEREO
GA SHEET 4