JVC HR-S6850MS Service Manual page 63

0 3 MAIN(VIDEO, ON SCREEN, SECAM, MAIN TERMINAL)
I2C_DATA_A/V
I2C_CLK_A/V
TO
C.SYNC/V.REF
SYSCON
P.MUTE(L)
V.PULSE
HR-S8850MS
TO
TU_VIDEO
TUNER
5
HR-S8850MS
CN501
D.FF
1 15 D.FF
V.REF
2 14
I2C_DATA_A/V
3 12
I2C_CLK_A/V
4 11
C_FROM_DIGI
5 9
Y_FROM_DIGI
Y
6 7
EE(L)
7 6
V/Y_TO_DIGI
8 5
C_TO_DIGI
C
9
3
Fsc
10
1
HR-S8850MS
WF13
WF14
CN901
EE(L)
11 3
I2C_DATA
12 2
4 I2C_CLK
13 1
Y_TO_AV
Y
14 5
V_FROM_AV Y
15
7
REC_COLOR
C
16
9
WF15
WF16
WF17 CN905
Fsc
17 1
C_TO_DIGI
C
18 9
Y/V_TO_DIGI
Y
19 7
Y_FROM_DIGI
Y
20 5
C_FROM_DIGI
C
21 3
WF18
WF19 WF20
CN902
SECAM_PB_COLOR
22 3 SECAM_PB_COLOR
V_FROM_OSD
23 12
PB_COLOR
C
24 1
MAIN_ALC_DET
25 4
Y_TO_SUB
Y
26
5
P.MUTE(L)
3 27
6
FRONT_V_IN
28 7
V_TO_OSD
29 9
CHARA_DATA
30 10
WF21
WF22
WF23
J7105
FRONT
2
VIDEO IN
1
0 6 TERMINAL(I/O)
J7102
3 6 S-JACK
FRONT_S_IN
2 1
CN7108 CN916
FRONT_Y
3
4
Y 1
4 FRONT_C
2
C 3
2
FRONT_Y_IN
31
FRONT_C_IN
32
V_FROM_OSD
1 33
C_OUT
34
Y_OUT
Y
35
REAR2_C_IN
36
REAR2_Y_IN
37
REAR1_C_IN
C
38
REAR1_Y_IN
Y
39
Note : For the waveforms in this block diagram, refer to page 4-41.
A B
WF1
C
Q21
Y
BUF
Q14
B13
BUF 26 29 27 30 2
B12
HR-S6850MS
HR-S7850MS
HR-S7851MS
C.K
EE(L) C.SYNC
6dB AMP 6dB AMP
N P
C.SQUELCH
B.E
C B.D
SQUELCH
WHITE
LIMITER
EXT
CLEAR
SYNC
INT
25
Sync.Sep.
C.K
L-SECAM L-SECAM
MIX
LEVEL
ADJ
Clamp
21
P
APT CTL
22
Fsc
ATT
(-10dB ) R
20
NOT
ATT
USED (-10dB )
Video
AGC
18
NOT
ATT
USED (-10dB )
16
C
ATT
(-10dB )
C
WF10 I2C
46 LOGIC
DATA
45
CLK
P. MUTE(L)
Y
Y
IC901
Q909
24
BUF
1
23
CLAMP
22
3
NOT
21 CLAMP
USED
20 5
CLAMP
18
C
17 7
16 9
Q910
NOT 15
Q911,Q912
USED
SW 11
AV1
13
_YCIN(H)
DATA
14 12
C
CLK
C
C
IC2 (SWITCH)
SECAM_REC_COLOR
5
4 Q11, Q40
1 HR-S8850MS
TP106
7
PB.FM ES
2Fsc
3 Q10
NOT
BUF
Q24
USED
& EQ WF4
2
BUF
VHS(H)
PB_FM X2
WF2 BUF
WF3 Q5
1 34 44 42 40
LPF
X-tal
CR Det.
2fsc VCO VCO/OSC
2fsc
BDL C
VCA
LPF BDL P R
fH LOCK CTL
R P
LEVEL
Det1 PB REC REC PB/REC
Color Killer
ID Det. APC APC AFC Discri
CLPF Delay
LEVEL
ACC Det
Det2 APC
SW
R P
1/2
DOWN 1/2
Conv. 2FL VCO
Phase SW.
Pulse
Gen.
4Phase
CLPF
Gen.
P
Main Main 2M LPF
CTL TRAP
Conv2 Conv1 ACC
fH HPF
R
P
P R R P
HPF
TRAP
R
L-SECAM
P
LPF REC
PILOT C
BPF MUTE
ADD
R L-SECAM
COMP
SEP .
P
SQPB
SQPB P 629
G FM AGC
DL EQ TRAP
R EQ
R
REC N.L. N.L.
SQPB DET
De.Emph
Emph DO
AGC Det
P DLIM
Det
PB ALC
DeMOD
SQPB SQPB
SQPB ET
D.E. EQ ET LPF
ET
Sub LPF
N.C.
FBC/ALC Main REC
Filter
De.Emph
FM MOD
R P
fo/Dev
YNR
Main Emph
S-DET
Carrier Offset
DO W .C/D.C
Y DO /REC
BDL
Y LPF
R P R P P R
BDL
Clamp
LPF
Clamp
10 6 12 14
11 13 7
WF7
FILTER Q17 SW
WF9
VHS(H)
WF8
Y
BUF
Q207, Q208
CN903
9 5
8
CN913
1
Q903
Y 3
BUF Y
C 4
C
BUF
2
Q904
J902
AV2 IN/DECODER
20 18
Y/V.IN V.GND HR-S7850MS
V.OUT C/R G B
HR-S7851MS
19 15 11 7
HR-S8850MS
Q906-Q908
AMP
Y
J901
AV1 IN/OUT
20 18
Y/V.IN V.GND
C/R G B
V.OUT
19 15 11 7
Y
AV1_YCIN(H)
D E
4-51 4-52
SECAM SECTION
HR-S6850MS, HR-S7850MS, HR-S7851MS
V_TO_OSD
C
SECAM_PB_COLOR
BUF Fsc
C.SYNC
IC301
27 17
D.FF WF5
X1
SYNC GATE MUTE
TP111 GEN
SYNC
38 55 /V-SEP
GEN
D.FF
fsc IN PB 4.3MHz
VCA
MUTE BPF
2.2MHz 4.3MHz
X2 X2
BPF BPF
1.1MHz
VCA
BPF
IC301
REC
112 MUTE
Head SW1 AGC
D.FF CTL DET
Head SW2 R/P
2 16 11 14
111
AGC
HPF ENV DET FILTER
Fsc
WF27
120 WF26
ME
SECAM TANC
DET
SP 101
DET
Comp
EE(L)
DET
EP
(LP)
104
YCA
SP2
+
105
SP2
CN1
-
8
CH2
WF6
7
SP1
CH1 - 106
6
SP1
5
+
+ 4
108
LP2
3
-
CH2
LP2 2
CH1 1
109
-
Adj
LP1
+
LP1
110
IC1
(
VIDEO & AUDIO
SIGNAL PROCESSOR)
8
NORM/MESEC/S
P. MUTE(L)
SYNC_DET(H)
VHS(H)
I2C_DATA2
I2C_CLK2
OSD_CS
S.CLK
V_TO_OSD
S.DATA_FRSYS
J904
REAR
S-OUT
IC201
(
ON SCREEN
)
DISPLA Y
8
SYNC_DET 4
CHABLK
3
MUTE 9
CS
21
CV_IN 10
19 SCLK
CVOUT
11
SDATA
27
CS2 2
2Fsc
XTAL_ IN
5
LN21
WF11
WF12
F
WF24
WF25
15
REC
PB
REC
SYNC
PB LIM GATE
REC
SYNC
1/4
GATE
PB
REC/PB
MUTE
AGC SECAM
DET
AMP
MODE
CTL
13 1 26
SECAM_DET
SECAM(H) TO
D.FF
SYSCON
VIDEO_ENV
HEAD_SEL
VIDEO
U.DRUM
HEAD
8
8
SP CH2
7 7
6 6
SP CH1
5
5
4 4
EP(LP) CH2
3 3
2
2
EP(LP) CH1
1 1
TO
SYSCON
G H