JVC AV-32220/G Service Manual page 34

BLOCK DIAGRAM
FRONT JACK PWB
V
L
VIDEO
INPUT
R
Y
S-IN
C
V1
L1
VIDEO
INPUT 1
R1
L , R
V2
1
VIDEO L2 IN1
4
INPUT 2
R2 IN2
6
IN3
L
VARI/
8
FIX
IN4
R
A.OUT
IC801
COMPU
VIDEO
IC701
LINK EX SELECTOR
(MAIN)
3 ! 3 ! 3 ! 3 !
(MAIN PWB)
L , R
TU001
IF
CLK/DT/LOK/EN/AGC
DEG.
COIL
DEG.
RELAY
D901
MAIN PWB
No.51782
IC201
DIGITAL Y
COMB
4
FILTER C
IC661
Q212
V
AMP
BUF
10
5
6
IC671
AV SELECTOR PWB
AV SW
3
4, 8
9
29 17
V/F
KEY/ MUTE
REMO
IC701
IC702
SENSOR CONTROL PROCESSOR
MEMORY
& CLOSED CAPTION
SD AFC1
40 8
VCCD
PC902
AC PULSE
DRIVE
RY901
RERAY
T901
SW.
TRANSF.
B1
IC901 PC901 IC941
POWER
VOLTAGE ERROR
REG. FEED BACK AMP
Q942 <
PWR 1
Q928
Q944
SW
SW
PWR ON/OFF
PWR 2
AV-32220 AV-32220
Y
Q271
BUF
Y
IC803
S/OT
SELECTOR
15
Q253
8
13 9
BUF 11
10
Q851 <
C C
Q302 Q371 Q852
BUF SW
BUF
SV/OTH
25 37 39
26 36 38
7
COM
IC601
MTS
FIX L , R
Q671 <
Q672
12 40
41
13
SW
Q683 <
Q686
SW
1
2, 10
11
39 41<44
H.SYNC
V.SYNC
55
CAPTION
31 40 44
IF / DET DEF / VIDEO / CHROMA
MPX
Q161
54
BUF
C
Y
37 45
43
Q204
Q203 Q205
SW BUF BUF
C
IC701
2-3 2-4
CRT SOCKET
PWB
Q351 <
Q353
RGB DRV
FRONT CONTROL
RM
Q101
IF AMP
OSD
RGBYS
Q741
14<17 19<21
SF
V.INV
7, 8
R.G.B
IF
101
23
NFB
HP
IC201
30
7
VP
V.RAMP IC421
ABL HD VD VTV 24
SIF
V ERT OUT
36 32 22
2 4
47 52
Q232
Q131 CF161
SCENE
BUF 4.5MHz
CTRL
CF131
Q132 1+& 1+&
1+& 1+&
4.5MHz
BUFFER (AV SEL PWB)
TRAP
Q521 Q531
H.DRIVE H.OUT
B1
No.51782
CRT
PWB
LED SW
IC601
AUDIO AMP
L , R L , R
1 11
2 13
Q743
H.INV
HP
6
DEF YOKE
(ITC)
H
V
T522
HVT