JVC HM-DH30000U Service Manual page 111

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V.PULSE
I2C_DATA_A/V
TO
I2C_CLK_A/V
SYSCON
SYNC_DET
WIDE_DET/SCR_ID
C.SYNC/V.REF
5
D.FF
1
V.REF
2
I2C_DATA_A/V
3
I2C_CLK_A/V
4
C_FROM_DIGI
C
5
Y_FROM_DIGI
Y
6
Y/V_TO_DIGI
Y
7
C_TO_DIGI
C
8
Fsc
9
I2C_DATA_A/V
10
I2C_CLK_A/V
11
4
Fsc
12
C_TO_DIGI
C
13
Y/V_TO_DIGI
Y
14
Y_FROM_DIGI
Y
15
C_FROM_DIGI
C
16
PB_COLOR
C
17
V.PULSE
18
MAIN_ALC_DET
19
Y_TO_SUB
Y
20
P.MUTE(L)
21
WIDE_DET
22
FRONT_Y_IN
23
FRONT_C_IN
24
FRONT_V_IN
25
REAR1_V_IN
26
V_TO_OSD
27
CHARA_DATA
28
Y_TO_AV
Y
29
V_FROM_AV
Y
30
3
REC_COLOR
C
31
J7194
3 6 JACK
S IN
1
CN7191
3 FRONT_Y_IN
Y 9
4 FRONT_C_IN
C 11
2 FRONT_V_IN
6
J7191
2
VIDEO IN
1
TO
TUNER/DEMOD
TU_VIDEO
2
TO DIGITAL
(AUDIO AD/DA)
CN9801
1
C_OUT
C
32
Y_OUT
Y
33
REAR2_C_IN
C
34
REAR2_Y_IN
Y
35
REAR1_C_IN
C
36
REAR1_Y_IN
Y
37
A
0 3
MAIN (VIDEO, SYNCDET, MAIN-TERMINAL)
Q251-Q253
SYNC
DET
V/STD/HS1.FF
CN7104 Fsc
15
14
12
11
9
7
5
3
1
CN7103
2
3
4
9
10
11
12
13
14
16
17
18 P.MUTE(L)
19
20 WF11
21
22
23
25
26
27
29
C
30
CN901
Y
3
Y
1
6
TP7101
Y_OUT
CN7107
Y
Y_IN 1
C
C_IN 3
CN7109
4
6
C
8
Y
10
12
14
Note : For the waveforms in this block diagram, refer to page 4-67.
B C
TP106
PB FM
WF1
C
Q5
BUF WF3
Y
BUF
& EQ BUF
Q21
WF4
WF2
26 29 27 30 2 1
BDL C
VCA
BDL
LPF
C .K
R P
6dB AMP 6dB AMP
LEVEL
Det1
N P
C .SQ UELCH
CLPF
LEVEL
B .E
B.D
Det2
R P
SQ UELCH
WHITE
LIMITER
EXT
CLEAR CLPF
SYNC
INT
25
NOT
Sync.Sep .
Main Main
USED
C .K Con v2 Con v1
L-SECAM L-SECAM
P R R P
P
PILOT C
BPF
ADD
MIX R
LEVEL
ADJ
Clamp
R
REC N.L. N.L.
De .Emph Emph
A GC Det
21 P
PB ALC
SQPB SQPB
SQPB
P D .E. EQ
ET ET
22 APT CTL N.C .
A TT
(-10dB) R
FBC/ALC
20
NOT
ATT
USED ( -10dB )
Video
18 A GC
ATT
( -10dB )
YNR
DO
16
Y DO
ATT /REC
( )
-10dB BDL
C
I2C R P R P
BDL
46 Clamp
LOGIC LPF
Clamp
D A T A
45
CLK
10 11 6 12 13
FILTER
WF10
WF9
0 6
TERMINAL-NTSC
WF2
TO DIGITAL
WF1
(VIDEO IF)
CN8803
CN7104
Y
D-Y_OUT 9
Cb
Cb_OUT 3
Cr
Cr_OUT
5
Y
Y_OUT
1
C
C_OUT
7
WF3
WF4
WF5
CN7105 CN7102
10 10
8 8
3 3
2 2
6 6
5 5
Published in Heiloo Holland
D E
4-75 4-76
Q12
BUF Fsc
X2
IC1
NOT
USED (VIDEO & AUDIO
SIGNAL PROCESSOR)
34 44 42 40 38 55
fsc IN
LPF
X-tal
CR Det
VCO/OSC
2fsc VCO
2fsc
P R
fH LOCK CTL
112
Head SW1
PB REC REC PB/REC D.FF CTL
Color Killer
Head SW2
ID Det. APC APC AFC Discri
Dela y
APC ACC Det
SW 111
1/2 HPF ENV DET
1/2
DOWN
Conv . 2FL VCO
Phase SW .
Pulse
Gen.
120
ME
SECAM TANC
DET
4Phase
Gen.
SP 101
P DET
2M LPF Comp
CTL TRAP
ACC DET
fH HPF
R EP
( LP )
P
HPF
TRAP
R
L-SECAM 104
LPF REC
YCA
MUTE
L-SECAM
COMP
SP2
SEP . +
P
105
SQPB
SP2
SQPB P 629
G FM GC A
DL EQ -
TRAP
EQ
R
CH2
DET
SQPB
DO
DLIM
Det
SP1
CH1 - 106
DeMOD
SP1
ET
LPF +
Sub LPF
+
108
Main REC LP2
De .Emph Filter -
CH2
LP2
FM MOD
CH1
109
-
R P
f o/De v Adj
Main Emph
LP1
Carr ier Offset S-DET
+
W .C/D .C
LP1
110
Y LPF
P R
8
14 7
WF7
SW
WF8
Q17
P.MUTE(L)
IC7103
2
8
3 7
4 6
IC7102
IC7101
4
C
2 2 8
6
Y
3 7
Y 4 6
C
C
Y
C
Y
F
29/11/2016
V/STD/HS1.FF
TO
SYSCON
V/STD/HS1.FF
VIDEO_ENV
WF5
NOT
USED
NOT
USED
U.DRUM
VIDEO
CN1
HEAD
8 8 8
WF6 WF6 SP CH2
7 7 7
6 6 6
SP CH1
5 5 5
4 4 4
EP(LP) CH1
3 3 3
2 2 2
EP(LP) CH1
1 1 1
TO
SYSCON
NORM/MESEC/S
VHS(H)
P.MUTE(L)
J7127
6
Y
Y_OUT
5
4
Cb
Cb_OUT
3
2
Cr
Cr_OUT
1
J7110
2
V_OUT1
1
J7114
2
V_OUT2
1
1
J7109
3
Y
Y
4 S_OUT1
C
C
2
1
J7113
3
Y
S_OUT2
4
C
2
J7102
2
V_IN
1
J7106
2
BSDEC.V_IN
1
1 J7105
4
C
BSDEC.S_IN
3
Y
2
1 J7101
4
C
S_IN
3
Y
2
G H