JVC HR-S6950EU Service Manual page 82

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I2C_DATA_A/V
I2C_CLK_A/V
TO
C.SYNC/V.REF
SYSCON
P.MUTE(L)
V.PULSE
TO
TUNER TU_VIDEO
5
HR-S7950EU
HR-S7955EK
D.FF
1
V.REF
2
I2C_DATA_A/V
3
I2C_CLK_A/V
4
C_FROM_DIGI
5
Y_FROM_DIGI
6
V/Y_TO_DIGI
7
C_TO_DIGI
8
Fsc
9
WF13
WF14
EE(L)
10
I2C_DATA
11
4
I2C_CLK
12
Y_TO_AV
13
V_FROM_AV
14
REC_COLOR
15
WF15
WF16
WF17
Fsc
16
C_TO_DIGI
17
Y/V_TO_DIGI
18
Y_FROM_DIGI
19
C_FROM_DIGI
20
WF18
WF19
SECAM_PB_COLOR
21
V_FROM_OSD
22
PB_COLOR
23
MAIN_ALC_DET
24
Y_TO_SUB
25
P.MUTE(L)
3
26
FRONT_V_IN
27
V_TO_OSD
28
CHARA_DATA
29
WF21
WF22
J7105
FRONT
VIDEO IN
J7102
3 6
S-JACK
FRONT_S_IN
2 1
CN7108
FRONT_Y
3
Y 4
FRONT_C
4
2
C
2
FRONT_Y_IN
30
FRONT_C_IN
31
V_FROM_OSD
1 32
C_OUT
33
Y_OUT
34
REAR2_C_IN
35
REAR2_Y_IN
36
REAR1_C_IN
37
REAR1_Y_IN
38
Note : For the waveforms in this block diagram, refer to page 4-39.
A
0 3
MAIN(VIDEO, ON SCREEN, SECAM, MAIN TERMINAL)
C
Y
HR-S7950EU
B13
26
HR-S7955EK
B12
HR-S6950EU
HR-S6955MS
HR-S7955MS
C.SYNC
CN501
15
D.FF
14
12
11
C
9
Y
7
5
C
3
1
25
CN901
EE(L)
3
2
1
Y
5
Y
7
C
9
21
CN905
22
1 Fsc
C
9
Y
7 20
NOT
Y USED
5
C
3 18
NOT
USED
WF20
CN902 16
C
3 SECAM_PB_COLOR
12
WF10
C 46
1
4 45
Y
5
P. MUTE(L)
6
7
9
10
Y
WF23
2
1
0 6
TERMINAL(I/O)
CN916
1
3
Q909
24
BUF
23
22
NOT
21
USED
20
18
C
17
16
Q910
15
NOT
Q911,Q912
USED
SW
AV1
13
_YCIN(H)
DATA
14
C
CLK
Y
C
Y
B C
Q14
SECAM_REC_COLOR
BUF
HR-S7950EU/S7955EK
TP106
WF1
PB.FM
BUF
Q21
& EQ WF4
BUF
PB_FM
WF2
WF3
29 27 30 2 1 34 44
2fsc VCO
BDL C
VCA
P R
LPF BDL
fH LOCK CTL
C.K
R P
6dB AMP 6dB AMP
LEVEL
Det1 PB
Color Killer REC
N P
ID Det. APC APC
C.SQUELCH
CLPF Delay
LEVEL
B.E
APC ACC Det
B.D Det2
SW
R P
1/2
Phase
SQUELCH
Pulse
WHITE Gen.
LIMITER
EXT
CLEAR
CLPF
SYNC
INT
Sync.Sep.
Main Main
CTL TRAP
Conv2 Conv1 ACC
C.K
fH HPF
L-SECAM L-SECAM P R R P P
TRAP
R
P
PILOT
BPF C
ADD
MIX
R
LEVEL COMP
ADJ
SEP .
Clamp
SQPB
SQPB
G
DL
R EQ
N.L.
REC N.L.
SQPB
De.Emph
Emph DO
AGC Det
P DLIM
Det
PB ALC
DeMOD
SQPB SQPB
SQPB ET
D.E.
P EQ ET LPF
ET
Sub LPF
APT CTL N.C.
ATT
(-10dB )
R
FBC/ALC
Main
De.Emph
ATT
(-10dB )
Video
AGC
ATT
R P
(-10dB )
YNR
DO
DO
ATT Y /REC
(-10dB ) BDL
C Y LPF
I2C R P R P P R
BDL
Clamp
LOGIC
LPF Clamp
DATA
CLK
10 11 6 12 13 14 7
WF7
FILTER Q16 SW
WF9
WF8
Y
CN903
9 5
8
CN913
Q903
Y Y
BUF
C
J902
IC901
AV2 IN/DECODER
20 18
1
Y/V.IN V.GND
C/R G B
V.OUT
CLAMP
19 15 11 7
3
CLAMP
Q906-Q908
AMP
5
Y
J901
CLAMP
AV1 IN/OUT
7
20 18
Y/V.IN V.GND
9
C/R G B
V.OUT
19 15 11 7
11
Y
12
AV1_YCIN(H)
Digitized in Heiloo Netherland
D 4-49 4-50
C
Q11, Q40
HR-S6950EU/S6955MS/S7955MS
ES
2Fsc
Q24 Q10 C.SYNC
BUF Fsc
BUF
WF5
X2 X1
D.FF
TP111
42 40 38
D.FF
LPF
X-tal
CR Det. VCO/OSC
2fsc
92
Head SW1
REC
PB/REC D.FF CTL
Head SW2
AFC Discri
91
ENV DET
HPF
DOWN 1/2
Conv. 2FL VCO
SW.
100
ME
SECAM TANC
DET
4Phase
Gen.
81
SP
DET
P
Comp
2M LPF
DET
R EP
(LP)
HPF
L-SECAM 84
LPF REC
YCA
MUTE
L-SECAM
SP2
+
P
85
SP2
P 629
FM AGC
EQ -
TRAP
R
DET CH2
WF6
SP1
- 86
CH1
SP1
+
+
88
REC LP2
Filter
-
CH2
LP2
FM MOD
CH1
89
-
fo/Dev Adj
Main Emph LP1
Carrier Offset S-DET
+
W .C/D.C
LP1
90
IC1
( VIDEO & AUDIO
PROCESSOR )
SIGNAL
8
P. MUTE(L)
V_TO_OSD
BUF
Q207, Q208
1
J904
3
Y
REAR
4
BUF C
2 S-OUT
Q904
IC201
HR-S7955MS
( ON SCREEN
HR-S7950EU
)
DISPLA Y
HR-S7955EK
8
SYNC_DET 4
CHABLK
3
MUTE
9
CS
21
CV_IN 10
SCLK
19
CVOUT
11
SDATA
27
I2C_DATA 2
XTAL_ IN
5
LN21
WF11
WF12
E F
3/28/2017
HR-S6955MS/S7955MS
SECAM SECTION
V_TO_OSD
C
SECAM_PB_COLOR
WF24
WF25
IC301
27 17 15
SYNC GATE MUTE
GEN
SYNC
/V-SEP
GEN
REC
PB 4.3MHz
VCA
MUTE BPF PB
REC
SYNC
LIM
PB GATE
2.2MHz 4.3MHz
X2 X2
BPF BPF
REC
SYNC
1/4
1.1MHz
GATE
VCA
BPF
PB
REC/PB
IC301
REC
MUTE
MUTE
AGC AGC SECAM
DET AMP DET
R/P MODE
CTL
2 16 11 14 13 1 26
AGC
FILTER
Fsc
WF27
WF26
SECAM_DET
EE(L) TO
SECAM(H)
D.FF
SYSCON
VIDEO_ENV
VIDEO
HEAD
CN1
SP CH2
6
5
SP CH1
4
3
LP/EP CH2
2
1
LP/EP CH1
NORM/MESEC/S
SYNC_DET(H)
VHS(H)
TO
I2C_DATA2
SYSCON
I2C_CLK2
OSD_CS
S.CLK
S.DATA_FRSYS
2Fsc
G H