JVC TV-20F242 Service Manual page 56

HIFI FSC
Y/C/A/CCD/H.AMP
IC4001
LA71067M-MPB
CP4001
EP/LP-CH2 (L)
1
2 EP/LP COM
3 EP/LP-CH1 (R)
4 SP-CH2 (L)
CYL 5 SP COM
6 SP-CH1 (R)
7 HF2(L)
8 HF COM
HF1(R)
9
HF1
HIFI HF COM
HF2
CP4003
FE HEAD (HOT)
1
FE HEAD
2 FE HEAD (GND)
CP4002
AUDIO PB
6
5 AUDIO REC
4 CTL+
A/C HEAD
3 CTL-
2 AE HEAD(-)
1 AE HEAD(+)
Q4001, Q4002
Y/C/AUDIO/HEAD AMP/IN/OUT BLOCK DIAGRAM
X4001
Q604
3.579545MHz
BUFFER
61 51
62
PULL
VX01
TIMMING
L
85
H.SW
REC
H FM-EQ
84
AGC KIL
AMP
83
C-LPF
H
P
R
82
H.AMP
SW
GCA
88
L
R
P
FM
89
AGC
90
DELAY
H
PB
H.SW
FM-EQ
91 L
PB
DOUBLE
PHASE-EQ
LIM
7 REC AMP
5
6
AUTO BIAS
EQ
AMP
4
PB.EE
99 3 2 1
T4001
Q4005
5 2 BIAS CTL
6 3
Q4006
BIAS OSC P.CON+5V
1
4
Q4003
AUDIO PB SW SW
No.51768
TV-20F242 TV-20F242
Q4009
BUFFER
NC
49
53 47
OUT
CCD CLAMP
DRIVER
NL DATAIL
FM WC
EMPHA ENH
MOD DC
V/I
CONV
P
Y-LPF
R
Main 3.58M YNR/
B-UP
CONV BPF2 COMB
AMP
P N.L.
ACC
DEEM
3.58M
AMP
BPF1
R
KIL NC1
PB
B.D.
AMP
Y/C MIX
P
FM SUB
DEM LPF
R
V-AGC
P R
LINE
ALC
AMP
MUTE
SYNC
SEP
40
80 78 76 38 42
100 96 98 97
2-5 2-6
59
55
30
19
CLAMP 25
P
28
R
VCA 46
CLAMP 44
Y/C R/P 16
AUDIO R/P
17
C ROT 14
1/2
RF SW IN 13
AUDIO
12
FBC
MUTE
H.A R/P 11
ENV DET
93
Chara
31
INS.
Q4007
6dB
35 BUFFER
34
NC
2 3
L4004
No.51768
SP/LP/EP-H
MICON/
INPUT_SEL
OPERATION/
TRICK_PB-H/EE-H
DECK
DOC_XO_CTL
MONITOR_V
TV
TU1_VIDEO
REC/EE/PB
C.ROTARY
H.SW
VCR_A_MUTE
MICON/
V.REC_ST-H
OPERATION/
DECK
ENV.DET
DUMMY_V.SYNC
SD_VIDEO
FRONT_VIDEO_IN
NORMAL_A
HIFI
REAR_VIDEO_IN
Y/C_AUDIO
MICON/
CTL+
OPERATION/
CTL-
DECK