System Control Block Diagram (Vhs) - JVC SR-VS20E Service Manual

4.37

SYSTEM CONTROL BLOCK DIAGRAM (VHS)

5
CN3003
CAP MDA
CAP REV ( L )
6
M
CAP CTL V 3
CAP FG 2
CON1 CN3001
DRUM CTL V
DRUM MOTOR
3 3
D.PG
4 4
D.FG
5 5
M
4
LOADING MOTOR
5 5
CN3002
LDM2
M 2
LDM1
1
ROT AR Y
CN3004
ENCODER
LSB
1
3
LSC 2
LSA 3
1 2
A/C HEAD
A/C HEAD CN2001
CN1
CTL HEAD ( - )
2 6
CTL CTL HEAD ( + )
1 7
TO
VIDEO/AUDIO
D.FF
C.SYNC/VREF
2
8 5 JOG 3 6
JACK
FW7008 FW7007 CN7002 CN7507
JSA/SHUTTLE A
1 1 16 16
JSB/SHUTTLE B
2 2 15 15
JOG/SHUTTLE
1
SHUTTLE(L)
4 4 13 13
UNIT
J2/JOG_A
5 5 12 12
J1/JOG_B
6 6 11 11
Note : For the waveforms in this block diagram, refer to page 4-71.
A B
0 3 MAIN ( SYSCON, SUB CPU )
WF1
WF2
WF3
PC3001
PHOTO
SENSOR PC3002
IC3004
( LOADING MOTOR PHOTO
SENSOR
VOLTAGE CONTROL )
2 9
LDM2 LMC1
4 7
LDM1 LMC2
1
DRIVE VOL T AGE
Vref
CONTROL
Q3001
WF4
D.FF
TP3905
D3004
2 1
AL5.8V RESET
3
IC3002
TP3903 TP3904
Vcc
( RESET )
D3011
D3012
C D
IC3001
( SYSTEM CONTROL MICRO PROCESSOR )
65
28 X1
CAP REV ( L )
64
101
X2
CAPPWM
8
69
CFG
OSC2 ( OUT )
67
OSC1 ( IN )
96
S_CASS(H)
102 41
DRUMPWM REC SAFETY
107 53
DPG S.CLK
108 51
DFG S.DATA TOSYS
52
S.DATA FRSYS
54
SP FG 15
END SENSOR
55
TU FG
14
START SENSOR
35
LMC1
36
LMC2
37
LMC3
TP3303
17
26
LSB SUB_BUSY/WIDE_DET2
27 79
LSC SUB_RESET/EXP_CLK
104
25
LSA SUB_CS/EXP2_DATA
47
SUB_DATA_OUT/KBUS_DATA_OUT
TP4001 46
SUB_DATA_IN/KBUS_DATA_IN
CTL.P
48
SUB_CLK/KBUS_CLK
6
CTLAMPOUT
TP3901
3
CTL ( - )
1
TP3902
CTL ( + )
WF5
49
I2C DATA A/V
100
50
V . FF
I2C CLK A/V
98
C. SYNC
WF6
66
RES
61
TU DATA
60
TU CLK
71
MODE
62
FWE
76
I2C DATA2
97
75
JSA/STLA I2C CLK2
94
JSB/STLB
95
SHTL ( L )
4-77 4-78 E
AL5V
S3002
C3025 S.CASS
Timer clock
D3005
X3001
TIMER CLOCK
D.FF
(32KHz)
ONLY USED
X3002
FOR EU MODELS
MAIN SYSTEM
CLOCK
(10MHz)
S3001
REC_SAFETY
END
Q3003
SENSOR
STAR T
Q3002
SENSOR
TP3304
TP3305
IC3301
8
RXD
Q3305
15
SUB_BUSY
Q3306
60 9
SUB_RESET TXD
SW
64 59 Q3304
SUB_CS DIAL_PLAY(H)
SW
16 Q3303
SUB_IN 58
17 DIAL_OFF(H)
SW
SUB_OUT
Q3302
18 57
SUB_CLK DIAL_AUTO(H)
SW
56
HOUSING_SW
5
SDA
6
IC3003
SCL
( SERIAL MEMORY )
F G
TO
CONNECTION
D.FF
S.DATA FRSYS
S.CLK
TO
DISPLAY
CN7001
CN3011
3 S.CLK
4 S.DATA TOSYS
5 S.DATA FRSYS
TO
DV MAIN (DV SYSCON)
CN1002
CN3014
1 RXD
2 TXD
3 DIAL_PLAY(L)
4 DIAL_OFF(L)
5 DIAL_AUTO(L)
HOUSING_SW
6
TO
VIDEO/AUDIO
I2C DATA A/V
I2C CLK A/V
TO
TUNER
TU DATA
TU CLK
I2C CLK2
I2C DATA2
TO
CONNECTION
I2C DATA2
I2C CLK2
H