JVC HR-S6850EU Service Manual page 56

HR-S8850EK/EU
5
D.FF
1
V.REF
2
I2C_DATA_A/V
3
I2C_CLK_A/V
4
C_FROM_DIGI
5
Y_FROM_DIGI
6
EE(L)
7
V/Y_TO_DIGI
8
C_TO_DIGI
9
Fsc
10
EE(L)
11
I2C_DATA
4 12
I2C_CLK
13
Y_TO_AV
14
V_FROM_AV
15
REC_COLOR
16
Fsc
17
C_TO_DIGI
18
Y/V_TO_DIGI
19
Y_FROM_DIGI
20
C_FROM_DIGI
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
J7102
3
FRONT_S_IN
2
1
3
Y
4
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 4-34.
A B
0 3 MAIN(VIDEO, ON SCREEN, MAIN TERMINAL)
I2C_DATA_A/V
I2C_CLK_A/V
TO
C.SYNC/V.REF
SYSCON
P.MUTE(L)
V.PULSE
TO
TU_VIDEO
RF_VIDEO
TUNER
CN501
15 D.FF
14
12
11
C
9
Y
7
6
5
C
3
1
HR-S8850EK/EU
WF13
WF14
CN901
3
2
1
Y
5
Y
7
C
9
WF15
WF17 WF16
CN905
1 Fsc
C
9
Y
7
Y
5
C
3
WF18
WF19
WF21
WF20
CN902
12
C
1
4
Y
5
6
7
9
10
WF22
J7105
FRONT
VIDEO IN
2
1
0 6
TERMINAL(I/O)
6 S-JACK
CN7108
CN916
FRONT_Y
4 1
FRONT_C
2 3
Q910
Q911,Q912
SW
C
Y
C
Y
C D
VHS(H)
WF4
TP106
WF1
PB.FM
Q6
C
ES
Q21 Q7-Q9
Y
Q5
BUF
BUF
& EQ BUF
WF3
WF2
26 29 27 30 2 1
BDL C
VCA
LPF BDL
C.K
R P
6dB AMP 6dB AMP
LEVEL
Det1
N P
C.SQUELCH
CLPF Delay
B.E LEVEL
B.D Det2
HR-S6850EU
R P
HR-S6851EU
HR-S6852EU SQUELCH
HR-S6855EK
WHITE
LIMITER
EXT
CLEAR
CLPF
SYNC
INT
25
Sync.Sep.
Main Main
Conv2 Conv1
C.K
L-SECAM L-SECAM
P R R P
P
PILOT
BPF C
ADD
MIX R
LEVEL
ADJ
Clamp
R
REC N.L. N.L.
De.Emph Emph
DO
AGC Det
21 P
Det
PB ALC
SQPB SQPB SQPB ET
D.E.
P EQ ET LPF
ET
APT CTL N.C.
22
ATT
(-10dB ) R
FBC/ALC
20
NOT ATT
USED (-10dB )
Video
AGC
18
NOT
ATT
USED (-10dB )
YNR
16 DO
C Y DO /REC
ATT
(-10dB ) BDL
C
WF10 I2C BDL R P R P
46 LOGIC Clamp
LPF
Clamp
DATA
45
CLK
P. MUTE(L)
10 11 6 12 13 14
FILTER
WF9
Q18
Y
BUF
Y
Y Y
IC901
20
Q909
24
Y/V.IN
BUF
V.OUT
1
23
CLAMP
22
3
NOT
CLAMP
21
USED
Q906-Q908
AMP
5
20
Y
CLAMP
18
C
17
7
20
Y/V.IN
16 9
V.OUT
NOT 15
USED
11
Y
AV1
13
_YCIN(H)
DATA
14 12
CLK
AV1_YCIN(H)
E
4-43 4-44
Q11, Q40
ES
2Fsc
Q10
BUF Fsc
WF5
Q24
BUF
X1
D.FF
34 44 42 40 38 55
fsc IN
LPF
X-tal
CR Det. VCO/OSC
2fsc VCO
2fsc
R
P
fH LOCK CTL
112
Head SW1
Color Killer PB REC REC PB/REC D.FF CTL
APC AFC Head SW2
ID Det. APC Discri
APC ACC Det
SW 111
ENV DET
1/2 HPF
DOWN 1/2
Conv. 2FL VCO
Phase SW.
Pulse
Gen.
120
ME
SECAM TANC
DET
4Phase
Gen.
101
SP
P DET
Comp
2M LPF
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 AGC
DL EQ TRAP -
EQ
R
DET CH2
SQPB
WF6
DLIM
SP1
-
CH1 106
DeMOD
SP1
+
Sub LPF
+
108
REC
Main LP2
Filter
De.Emph -
CH2
LP2
FM MOD
CH1
109
-
R P
fo/Dev Adj
Main Emph LP1
Carrier Offset S-DET
+
W .C/D.C
LP1
110
Y LPF
P R
IC1
( VIDEO
SIGNAL
7 8
WF7
Q17 SW
P. MUTE(L)
VHS(H)
WF8
BUF
Q207, Q208
CN903
9 5
8
CN913
1
Q903 J904
3
BUF Y
REAR
4
C
C
BUF
2 S-OUT
Q904
J902
AV2 IN/DECODER
18
V.GND HR-S8850EK/EU
IC201
C/R G B
19 15 11 7 ( ON
DISPLA
8
SYNC_DET
3
MUTE
J901
21
AV1 IN/OUT
CV_IN
19
18
CVOUT
V.GND
C/R G B
27
19 15 11 7
CS2
5
LN21
WF11
WF12
F G
TP111
D.FF
TO
SYSCON
D.FF
VIDEO_ENV
HEAD_SEL
U.DRUM
VIDEO
CN1 HEAD
8 8 8
SP CH2
7 7
7
6 6 6
SP CH1
5 5 5
4 4
4
EP(LP) CH2
3 3 3
2 2 2
EP(LP) CH1
1
1 1
& AUDIO
PROCESSOR)
NORM/MESEC/S
SYNC_DET(H)
VHS(H)
TO
I2C_DATA2
SYSCON
I2C_CLK2
OSD_CS
S.CLK
S.DATA_FRSYS
SCREEN
Y )
4
CHABLK
9
CS
10
SCLK
11
SDATA
2
XTAL_ IN 2Fsc
H