System Control Block Diagram (Vhs) - JVC HM-HDS1EK Service Manual

4.35

SYSTEM CONTROL BLOCK DIAGRAM (VHS)

0
CN3003
5
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
2 4
D.FG
1 5
M
4
5 5 LOADING MOTOR
CN3002
LDM2
M 2
LDM1
1
ROT AR Y
CN3004
ENCODER
LSB
1
LSC
2
3
LSA
3
1 2
A/C HEAD
A/C HEAD CN2001
CN1
CTL HEAD ( - )
2 6
CTL CTL HEAD ( + )
1 7
D.FF
V . PULSE
VIDEO_ENV
C.SYNC/VREF
2
TO
A.MUTE(H)
VIDEO/AUDIO
A.FF
H.REC_ST(H)
N.REC_ST(H)
VHS(H)
FLY_ON(H)
1
Note : For the waveforms in this block diagram , refer to page 4-63.
A B
MAIN ( SYSCON )
3
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
TP4001
CTL.P
WF4
D.FF
WF6
TP3905
D3004
2 1
RESET
AL5.8V
3
IC3002
TP3903 TP3904
Vcc
( RESET )
C D
IC3001
( SYSTEM CONTROL MICRO PROCESSOR )
65
28
X1
CAP REV ( L )
X3001
TIMER
(32KHz)
64
101
X2
CAPPWM
8
CFG
69
OSC2 ( OUT )
X3002
MAIN
CLOCK
67
(10MHz)
OSC1 ( IN )
102
DRUMPWM
53
107
DPG S.CLK
51
108
S.DATA_TOSYS
DFG
52
S.DATA_FRSYS
46
KBUS_DATA_IN
54
48
SP_FG
KBUS_CLK
55
TU_FG
41
REC_SAFETY
35
LMC1
96
36
S_CASS(H)
LMC2
37
LMC3
15
END_SENSOR
14
START_SENSOR
26
LSB
I2C_DATA_A/V 49
27
LSC
I2C_CLK_A/V 50
25
LSA
91
OSD CS
6 ( AUDIO/VIDEO CTL )
CTLAMPOUT
3
CTL ( - )
1
CTL ( + )
FRONT(H)/EXP1_DATA 33 2
DATA1
WF5
CLK
100
V . FF 3
110
V.PULSE
21
VIDEO_ENV
98 V_UP(H) 103
C. SYNC
74
A.MUTE(H)
99
A.FF
104
SUB_CS/EXP2_DATA
88
79
H.REC_ST(H) SUB_RESET/EXP_CLK
58
N.REC_ST(H)
94
TU_DATA 61
VHS(H)
87
TU_CLK 60
FLY_ON(H)
66
RES
76
I2C_DATA2
I2C_CLK2 75
71
MODE
62
FWE
44
RMO
E
4-69 4-70
C3025
Timer clock
CLOCK
ONLY USED
FOR EU MODEL
SYSTEM
CN3011
CN3014
S3001
REC_SAFETY
S3002
S.CASS
END
Q3003
SENSOR
D.FF
STAR T
Q3002
SENSOR
IC3601
4
FRONT
9
D_TU
7
D_R2/R1Y/FV
8
FLY_REC(H)
9
D_TU
10
D_VHS
11
D_YV
14
OUT2D
IC3651
15
BIL_SEL/DEC(H) ( TUNER/REG CTL )
8
P.CTL(H)
15
FULL_E_ON
4
N.REC(L)
2
6
DATA2 SW1
3 7
SW2
CLK
5
SDA
6
IC3003
SCL
( SERIAL MEMORY )
Q7501
BUF
F
TO
VIDEO I/O SW
CN704
S.DATA_FRSYS
S.CLK
TO
DISPLAY
CN7001
3 S.CLK
4 S.DATA_TOSYS
5 S.DATA_FRSYS
TO
1 KBUS_DATA_IN
DIGITAL(ASIC IF)
KBUS_CLK
3
CN8002
D.FF
TO
I2C_CLK_A/V CONNECTION
I2C_DATA_A/V
CN501
TO
I2C_DATA_A/V
VIDEO/AUDIO
I2C_CLK_A/V
OSD CS
FRONT(H)
D_TU(H)
D_R2/D_R1Y/D_FV
TO
FLY_REC(H)
AUDIO I/O,
D_TU(H)
VIDEO I/O SW
D_VHS(H)
VIDEO/AUDIO
D_YV(H)
OUT2_D(H)
BIL_SEL/DEC(H)
V_UP(H) TO
SW.REG
P.CTL(H)
TO
FULL_E_ON(L)
VIDEO/AUDIO
N.REC ( L )
SW_1
SW_2
TU_DATA
TO
TU_CLK
TUNER
BIL_SEL/DEC(H)
I2C_CLK2
I2C_DATA2
CN7503
I2C DATA2
3
TO
2 I2C CLK2
TERMINAL
SAT_CTL
11
G H