System Control Block Diagram - JVC HR-XVC25US Service Manual

PLAYBACK COLOR SIGNAL
PLAYBACK LUMINANCE SIGNAL
RECORD COLOR SIGNAL
RECORD LUMINANCE SIGNAL
DVD_POWER_CTL
VCR_POWER_ON-L
POWER_FAIL
POWER
RX
TX
TUNER/JACK DVD RESET
1G/VCR/T-REC_LED
SEG_5
SEG_1
VCR_LED
OPERATION/
DISPLAY
DVD_LED
2G/DUB/REC_LED
KEY-B
KEY-A
REM_IN
CENT LED
D3001
BOT SENSOR
Q3008
EOT SENSOR
Q3006
REEL SENS
Q3001
AT+5.2V
CP3001
11 CYL FG/PG
12 CYL DRIVE
10 LDM CTL
5 I LIMIT
CAPSTAN
DD UNIT 9 CAP CTL
1 CAP FG
4 CAP.M F/R
2 CAP VCO
8 LD/CY_VCO
AT+12.6V
POWER
MS_SEN B
Q3004
P.CON +5V

SYSTEM CONTROL BLOCK DIAGRAM

SYSCON/TIMER/SERVO
IC3001 OEC0138A
45 DVD_POWER_CTL
41 POWER ON-L
37 POWER FAIL
65
RX
OSC 2
80
X1001
10MHz
78 OSC 1
64 TX
44 DVD/RESET
48 1G/VCR/T-REC LED
63 SEG5
SEG1
55
47 VCR LED
46 DVD LCD
49
2G/DUB/REC LED
29
KEY-B
30 KEY-A
43 REM IN
AT 5.2V POWER
25
BOT-H
26
EOT-H
P.CON+5V
2 1 2 1
REEL SENS
Q3002
4 3 4 3
REEL-T
39
38 REEL-S
103
CYL SPEED UP
DFG/PG
104
DRUM PWM
107
LD M CTL
97
102 CAP FULL
108 CAP PWM
84 CAP LIMIT
CAP FG
9
98 CAP FWD-L
28
MS SEN-A
2 1 2 1
27 MS SEN-B
MS_SEN A
Q3005
3 4 3
4
2-37
HIFI ENV 32
HIFI H.SW 106
ST SELECT 31
4 FSC OUT
21
X3003
14.3818MHz
4 FSC IN 22
C.SYNC 111
DUMMY V.SYNC
109
VIDEO H.SW
105
C.ROTARY 99
Y/C CS 93
AUDIO MUTE-H 95
H.AMP SW 100
V.REC ST-H 96
V ENV 24
CTL(+)
3
CTL(-)
4
Y/C DATA
54
Y/C CLK
53
COMP 101
AV SW1
92
CV IN1 17
POWER MUTE L
87
AFT S.CURVE 33
CV OUT 19
VCR-H 86
IIC CLK 61
IIC SDA
62
40
VIDEO MUTE H
88
SYS_MUTE
RF_CH_SW 94
REC SAFTY
TAB SW 35
SW
IC3003
PST3231NR
2
RESET 77 1 SYSTEM
RESET
3
73
SEG 10
SEG 9 71
SEG 8 68
SEG 7 67
SEG 6 66
3G/TV/VCR LED
50
4G/TIME SHIFT LED 51
5G/CB/BS LED 52
SEG 2 58
SEG 3
59
SEG 4 60
2-38
V.REC_ST-H
AUDIO_MUTE-H
IIC_CLK
HIFI/
IIC_DATA
DEMODULATOR
HIFI_ENV.DET
HIFI_H.SW
ST_SELECT
C.SYNC
DUMMY_V.SYNC
H.SW
C.ROTARY
Y/C CS
AUDIO_MUTE-H
Y/C/AUDIO/
H.AMP_SW
CCD/HEAD AMP
V.REC_ST-H
ENV.DET
CTL+
CTL-
Y/C_DATA
Y/C_CLK
COMP
AV_SW1
SW_V_ OUT
POWER_MUTE-L
AFT-S.CURVE
VIDEO_OUT
TUNER/JACK
TV/VCR
IIC_CLK
IIC_DATA
VIDEO_MUTE-H
SYS_MUTE
RF_CH_SW
SCL EEPROM
6
IC3099
SDA S-24C02BDP-1A
5
AT+5V POWER
SEG 10
SEG 9
SEG 8
SEG 7
SEG 6 OPERATION/
DISPLAY
3G/TV/VCR_LED
4G/TIME SHIFT_LED
5G/CB/BS_LED
SEG 2
SEG 3
SEG 4