Video Processor Circuit - Zenith H19F34DT Series Service Manual

1 2
G
Red
R R
Blue
B B
Green
F G G
IF
RM1201
Chroma (C-IN)
Luma (Y-IN)
Composite Video IF
Sound IF
SIF SIF AFC
E
Composite Audio
WF9
( ( ( ( ( ( ( (
V
ABL
10.0 µS
VERT-DRIVE
Luma (Micro) VNFB
WF13
Subcarrier Signal
FSC FSC
40.8 V
10.0 µS
IF
RM2206
FLYBACK
D
Vertical
WF13
HORZ-DRIVE
Horizontal
+8V
SW
L2205
V-Sync
V-SYNC V-SYNC
10µH
H-Sync
CN2C5B
H-SYNC H-SYNC
WF9
P/L
5
C
4
3
This schematic refers to
2
CL Chassis models
GND
1
H19F34DT
H20F34DT
WF11
5.18 V
H25F34DT
10.0 µS
H25F39DT
SYNC
B
H27F34DT H-SYNC
V-SYNC
H27F39DT
B
H25F36DT G
R
H27F36DT
FASTBLANK
H32F36DT
SDA
SCL
A FSC
SR25-3828VD0171B

Video Processor Circuit

3 4
+8V
SW
RM1208 L1202
100µH
100
CM1203
L1201 RM1207
0.01 U1201
100
0.82µH
25V 6200C000028
RM1203 GND
CM1204
M1962M
1.5K A
C
1000pF
CM1201
RM1204 Q1201
B 50V
0TR959009AA
100
1000pF BF959
GND
E
50V
A GND
RM1202
100 RM1205 A
390
33
GND
GND
A
A
CM1202
RM1206
1000pF
22
50V
WF10
GND GND
+8V
A A
SW
5.26 V
10.0 µS R1225
PROV
R1226
1K
CM1221 CM1220
RM1227
WF12
0.1 1000pF
+5V
PROV
16V 50V
SW
GND
GND
1.55 V
L1207
A A
10µH
C1222 CM1223
10.0 µS
47µF 0.01
16V 25V
GND GND
A A
RM2201
39K
CM2202
+5V PROV
SW 50V
+8V C2204
GND RM2202
SW B
D2201
6.8K CM2203
0DD414809ED CM2238 1µF
GND 0.01
RM2250
1N4148 50V
B
25V
82K
1000pF GND
R2203
B
50V
4.7K CM2205 10K
RM2204
RM2251
47pF
15K
50V
3.9K
GND GND
R2207
B B
1K
RM2208
+8 +8V
1K
VID SW
+8 WF12
GND
L2201
VID B
Q2201 CM2209
RM2211
+8VID 0TR733009AA 10µH 0.01
C2208 CM2207
470
KSA733C-Y 25V
47µF 0.01
C2230 GND
16V 25V
E GND
47µF GND
RM2212
R2210 B B
16V B
R R
GND 2.7K
+8 220
C GND
RM2209
VID C
C
2.2K
GND
WF10 C
GND
RM2215
C
R2214
470
G G
220
RM2213
E
RM2216
2.2K
B
2.7K +8
GND
GND
VID
C
C
R2218
Q2202 C
B B
0TR733009AA
C GND RM2219 220
KSA733C-Y
C 470
RM2217
+8
2.2K
E
VID
RM2220 GND
Q2203 B
2.7K C
WF11
0TR733009AA
GND
KSA733C-Y
C C
GND
C
H-SYNC
V-SYNC
RM2223
4.7K
RM2224
4.7K
RM2225
4.7K
R2226
JUMPER
RM2227
680
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER "X" IN THEIR
COMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
5 6
RM1211
1K
+8V
RM1210 CM1209
RM1212 SW
0.01
12K
220
25V
CM1208
C1207
GND GND
22pF
0.47
A A
50V
50V
GND GND
A A
CM1226
CM1206
PROV
50V C1216
0.01
GND
25V
A 47µF
RM1230
C1205 16V
470
CM1214
0.22
GND
50V 3900pF
A
50V
C1215
RM1219
CM1213
RM1209
P/L
1µF
10K
0.1
50V
16V
GND
A
C2201
1µF
50V
1
V RAMP CAP LIMITER IN
2
AFT OUT 8.7V REG OUT
3
VIF Vcc Cr IN
4
SIF Vcc Cb IN
5
RAMP OUT Hi Vcc
6
V RAMP F/B AUDIO ATT FILTER
7
ICM2200
AFC FILTER VREG Vcc
8
DEF GND 0ICTMMI044A TV/Y IN
9
LOGIC GND VIDEO/CHROMA Vcc
M61250FP
GND
10
B
FBP IN DRIVE Vcc
11
H OUT EXT/C IN
12
DEF Vcc CHROMA APC FILTER
13
NC VIDEO/CHROMA GND
14
R OUT DRIVE GND
15
G OUT X-TAL 3.58
16
B OUT ACL/ABCL
B
+5V
SW
+8V
SW
C2220
47µF
+5V
16V
R2222
SW
GND
100
R2221
B
1M
CM2210
L2602
0.01
25V JUMPER
RM2622
CM2211
CM2212 0.1 16V
0.1 16V CM2213
0.1 16V
RM2228 RM2229 RM2230
R2231 R2232
680 680 10K
CM2214
100 100
GND GND GND
D D D
47pF 50V GND
D
6-4
7 8
L1206
STEREO ONLY
10µH
CM1224
RM1224 L1208
CM1217 C1218 120pF
P/L 10µH
0.1 100µF 50V CM1225
16V 16V RM1222
C
10K
47pF
Q1203
B 50V
0TR959009AA
BF959
E
W1201
JM1200
RM1221 RM1223
PROV
PROV
10K 470
L1204
18µH
R1215 RM1216
220 100
GND
U1202
R1220
A
4.5MHz
( ( ( (
( ( ( (
6200C000027
3.3K
GND
TPS4.5MB9
A
U1203
WF15
6200C000026
4.5MHz
580mV
SFSH4.5MDB
10.0 µS
JM1202
P/L
+8V
48
CM2235
SW
L2204
47
0.1 16V
10µH
GND
46 CM2232 C2233
E
0.01 47µF
CM2234
45
25V 16V
GND GND
C2231
44 0.1 16V
E E
43
1µF GND
50V E
42
41 C2228
40 1µF 50V
WF14
39
38
CM2226 C2227
0.01 47µF
37
25V 16V
C2224 GND GND
36
CM2223
0.47 CM2225 E E
GND 0.015
35 50V
E 50V
GND 0.1
34
CRY2201 E RM2249 16V
R2243 RM2244
CM2222
33 8.2K WF15
+8V
19"/20" 516K JUMPER
GND
ABL
25" 3.9K 100
120pF
E
GND
27"/32" 3.3K 47
3.579MHz 50V E
156-A01B
D2203
RM2239
0DD414809ED
1M
1N4148
RM2234
100
RM2236
CM2217 0TR733009AA
47
0.01
25V C2219
GND
E RM2235
+8V P/L
B RM2237
Q2204 B 18K
ABL 50V
0TR733009AA
L2202 10K GND GND
+8VABL KSA733C-Y
C B B
10µH
GND
B
CM2216
PROVISION
C2218
0.1
+8V
RM2238
22µF
16V
SW1
750K
GND 16V
+8V
B GND GND
SW1
B B
RM2608
10K RM2616
C Q2601 RM2614
C2609
C2604
0TR945009AA 470
B
D2602
KSC945C-Y
0DD414809ED
E
100µF 100µF
E C2608
1N4148
16V 16V
B
RM2607 Q2602
47µF
3.3K RM2609 RM2610
RM2613
4.7K C
16V 0TR733009AA
4.7K 10K
10K
KSA733C-Y
+8V
SW1
RM2611 R2620 B
D2601
4.7K
10K
CM2612
RM2612 0DD414809ED RM2621
470pF
4.7K 1N4148 PROV
50V
ALL SYMBOLS WITH "M" ON THE DESIGNATOR
INDICATE SURFACE MOUNTED COMPONENT.
9 10
AGC
R1213
39K
SIGNAL-METER
SIF
SIF SIF
U1204
6200C000026
4.5MHz
SFSH4.5MDB
+5V
SW
L1205
10µH
CM1211 C1212
C 0.01 47µF
25V 16V
B
GND GND
Q1202
A A
E
0TR945009AA
KSC945C-Y
CM1210
RM1217
PROV
22
50V
TV
WF14
1.044 V
RM1218
470
10.0 µS
GND
A
EXT-AUD
COMP-AUD
+8.7
L2206
VSB
220µH
CM2236
C2237
0.1
100µF
16V
16V
GND GND
E E Y-MAIN
+5V
SW
L2207
+5V
SW
10µH
L2203
+5V
TP2
10µH CM2240
TNR
C2241
W2201
0.01
47µF
25V
16V
GND GND PROV
E E
C-MAIN
+8V
ABL
+8V
ABL
D2205
RM2244
RM2240
1K
P/L
0DD414809ED
R2243
RM2245
1N4148
P/L
10K 1/2W
E
B R2242 ABL
100
Q2206
C
1/2W C2221
0.01
KSA733C-Y
100V
RM2241 GND
270 B
VERTICAL-ABL
GND
B
+8V
+8V
+8V SW1
SW
+8V
SW1 L2601
+8VSW1
SW1
10µH
C2601
CM2602
47µF
RM2617 0.01
16V
10K 25V
C
910
C2610
Q2603
B
0TR945009AA
KSC945C-Y
47µF
E
Y-MICRO
16V
RM2615
RM2618
RM2619
330
4.7K
470
C
Q2604
0TR945009AA
KSC945C-Y
E
C2215
RM2233
JUMPER
1µF
50V