JVC TV-20F242 Service Manual page 55

BLOCK DIAGRAMS
MICON/
SCL
OPERATION/
SDA
DECK
HIFI TU1_AUDIO_A
Y/C/AUDIO/
HEAD AMP/ TU1_VIDEO
IN/OUT
TU601
1
SAW FILTER
CF601
4
1 4 5
5
11
Y/C/AUDIO/
MONITOR_V
HEAD AMP/
IN/OUT
AUDIO_OUT_L
HIFI
AUDIO_OUT_R
MICON/
OPERATION/ DEGAUSS_H
DECK
TH501
DEGAUSS ELEMENT
3 2
D501
F501
AC IN RECTIFIER
FEED BACK
Q507
FEED BACK
IC506 TLP621(GR)
SW.
Q502
SW.
Q512
SW.
No.51768
Q610, Q611
UNGER+8V
AT+13V
CHROMA
IC601 M61203CFP
63 48 56 57 55
DELAY ADJ
5.7Vreg
62
RF AGC
IF AGC VCO
1
VIDEO
VIF AMP
DET
64
APC
DET
RGB
LOCK
60 AFT
MATRIX
DET
CONTRAST
DEFEAT AFT OUT
BLACK STRETCH
VIDEO
GAMMA
MUTE
DEMODULATOR
CLAMP
31
VIDEO CHROMA
KILLER
TONE
BPF
DET
DELAY
ACC
ACC
DET
CHROMA
HPF
TRAP
CHROMA
VCXO
APC
DET
32
36 34 35
NC
X602
3.579545MHz
Q504
RY501
RELAY RELAY DRIVE
T501
8 15
10
5 1 4
12
POWER REG.
IC502
14
STR-G6624
9
P. CON + 9V
TV-20F242 TV-20F242
TV BLOCK DIAGRAM
AT+5V
REG
Q606
P.CON+8V
REG
Q602, Q603
REG P.CON+5V
NC
41 42 33 39 46 13 53
RESET
10
BUS
POWER ON
I/F
P-ON-ON 5
CONTROL
27
14
HV
DRIVE
BRIGHT CLAMP 26
BLK
AMP 15
16
R G B
CUT OFF
17
VERTICAL
V.RAMP
COUNT DOWN
29
HORIZONTAL
COUNT DOWN
AFC 1
H VCO AFC 2
VCO
ADJ
12 6 7
DIGITAL SOUND CONTROL
IC301 M62420SP
9
10
2 7 19 14
AT + 13V
UNREG + 8V
F502
5V REG.
Q501
P.CON SW. 1 3 P. CON + 5V
IC501 KIA7805PI
2-3 2-4
V. OUTPUT IC401 LA78040
THERMAL
PROTECTION
AMP
PUMP
UP
VCC
1
2 3 5 7
Q405 Q406
H. OUTPUT
H-DRIVE
FB401
8
+12
COL 10
9
+B
HV
4 ABL EF
G2
2 AFC
1 HEA
Q803, Q812
BLUE AMP
Q801, Q810
RED AMP
Q802, Q811
GREEN AMP
SOUND AMP
IC352 AN7522
2
6
4
SP352
SPEAKER
1
12
8
SP351
10 SPEAKER
5 9
Q508, Q509
AT+12V
SW.
POWER FAIL(DC)
VCR_POWER-H
TV_POWER-H
TV_A_MUTE
No.51768
DY
J801
F
7
V801
11
CRT
8
6
P. CON + 8V
X_RAY_TEST
VD
HD
MICON/
OSD_BLK
OPERATION/
OSD_B DECK
OSD_R
OSD_G
AFT_M
2
6
7
5
4
3
1
HEADPHONE
JACK
J351
MICON/
OPERATION/
DECK