JVC HR-S5900AM Service Manual page 65

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
I2C_DATA_A/V
1 12
I2C_CLK_A/V
2 11
C_FROM_DIGI
3 9
Y_FROM_DIGI
Y
4
7
V/Y_TO_DIGI
5 5
C_TO_DIGI
C
6 3
Fsc
7 1
WF13
WF14
CN901
I2C_DATA
8 2
I2C_CLK
9 1
Y_TO_AV
Y
10 5
Y
V_FROM_AV
11 7
REC_COLOR
C
12 9
WF15
WF17 WF16
CN905
Fsc
1 Fsc
13
C_TO_DIGI
C
14 9
Y/V_TO_DIGI
Y
15 7
Y_FROM_DIGI
Y
5
16
C_FROM_DIGI
C
17 3
WF18
WF19
WF21
WF20
CN902
V_FROM_OSD
18 12
PB_COLOR
C
19 1
MAIN_ALC_DET
20 4
Y_TO_SUB
Y
21 5
P.MUTE(L)
22 6
FRONT_V_IN
23 7
V_TO_OSD
24 9
CHARA_DATA
25 10
WF22
J7105
FRONT IN
2
1
0 6
TERMINAL(I/O)
J7102
3 6 S-JACK
S IN
1
CN7108 CN916
FRONT_Y
3
Y 4 1
FRONT_C
4
2 3
C
2
FRONT_C_IN
26
FRONT_Y_IN
27
REAR_V_IN
28
V_FROM_OSD
29
C_OUT
C
30
Y_OUT
Y
31
REAR2_C_IN
C
32
REAR2_Y_IN
Y
33
Note : For the waveforms in this block diagram, refer to page 4-34.
WF1
C
Q21
Y
BUF
26 29 27 30
C.K
6dB AMP 6dB AMP
N
C.SQUELCH
B.E
B.D
C
SQUELCH
WHITE
LIMITER
CLEAR
SYNC
25
Sync.Sep.
L-SECAM
LEVEL
ADJ
Clamp
21
P
APT CTL
22
ATT
(-10dB ) R
20
NOT ATT
USED (-10dB )
Video
18 AGC
NOT ATT
USED (-10dB )
16
C
ATT
(-10dB )
WF10 I2C
46 LOGIC
DATA
45
CLK
Y
2 J911
1
V.IN
Q910
2
J914
BUF
1
V.OUT
1
Q904
J904
4
C
BUF C
3 S-OUT
Y
BUF Y
2
Q903
1
J903
4
C
C
3 S-IN
Y
Y
2
WF4
TP106
PB.FM
2Fsc
Q7-Q9
Q5
BUF Q24
& EQ BUF
BUF
WF3
WF2
2 1 34 44 42
LPF
CR Det.
2fsc VCO
2fsc
BDL
C
VCA
LPF BDL P R
fH LOCK CTL
R P
LEVEL
Det1 PB REC REC PB/REC
Color Killer
P
ID Det. APC APC AFC Discri
CLPF Delay
LEVEL
ACC Det
APC
Det2
SW
R P
1/2
DOWN 1/2
Conv. 2FL VCO
Phase SW.
Pulse
Gen.
EXT
4Phase
CLPF
Gen.
INT
P
Main Main 2M LPF
CTL TRAP
Conv2 Conv1 ACC
C.K
fH HPF R
L-SECAM P
P R R P
HPF
TRAP
R
L-SECAM
P
LPF
PILOT
C
BPF
ADD
MIX L-SECAM
R
COMP
SEP .
SQPB
SQPB
P
G FM AGC
DL EQ
R EQ
N.L.
REC N.L. DET
SQPB
De.Emph Emph
DO
AGC Det DLIM
P
Det
PB ALC
DeMOD
SQPB SQPB
SQPB ET
D.E.
EQ ET ET LPF
Sub LPF
N.C.
FBC/ALC
Main
De.Emph
R P
YNR
Main Emph
Carrier Offset
DO W .C/D.C
Y DO
/REC
BDL
C Y LPF
BDL R P R P P R
Clamp
LPF
Clamp
10 11 6 12 13 14 7
WF7
FILTER Q17 SW
WF9
Q18
WF8
BUF
Y
BUF
Q207, Q208
4-43 4-44
Q11, Q40
ES
Q10
BUF Fsc
X2 X1
40 38 55
fsc IN
X-tal
VCO/OSC
WF5 TP111
D.FF TO
SYSCON
112
Head SW1
D.FF
D.FF CTL
Head SW2
VIDEO_ENV
HEAD_SEL
111
HPF ENV DET
120
ME
SECAM
TANC
DET
SP 101
DET
Comp
DET
EP
(LP)
104
REC
YCA
MUTE
SP2
+
P
105
SP2
629 CN1
TRAP -
R
8
CH2
WF6
7
SP1
CH1 - 106
6
SP1
+ 5
+ 4
108
REC LP2
3
Filter
-
CH2
LP2 2
FM MOD
CH1 1
109
-
fo/Dev Adj
LP1
S-DET
+
LP1
110
IC1
( VIDEO & AUDIO
SIGNAL PROCESSOR )
8
NORM/MESEC/S
VHS(H)
SYNC_DET(H)
OSD_CS
S.CLK
S.DATA_FRSYS
IC201
( ON SCREEN
)
DISPLA Y
8
SYNC_DET 4
CHABLK
3
MUTE 9
15 CS
CV_IN 10
13 SCLK
CVOUT 11
SDATA
2
2Fsc
XTAL_ IN
WF11
WF12
U.DRUM
VIDEO
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