3-19
3-20
4. SYSTEM BLOCK DIAGRAM
77
76
8
4
2
33
49
71
22
41
16
IC501
GMS3974
MODE S1
MODE S2
MODE S3
MODE S4
T-UP Reel
CST IN
Vss (A/D)
Vss (SERVO)
Vss (OSD)
Vss (SYSCON)
Vcc (SYS)
Vcc (SERVO)
CAP. PWM
CTL +
CTL -
DFG
CFG
CAP. REV 'H'
CAP. ADJ
DRUM ADJ
V. ENV
V.H/SW30
MODE S/W MS501
TO/ FROM AVCP/SECAM
TO/ FROM AVCP/SECAM
T-UP END
T-UP REEL
SUP REEL
CST. TAB SW.
5.3VA
5.3VA
RS501
RS502
CS501
R544
R548
R5C6
C552
5.3VA
5.3VA
LD501
DECK IR LED
C.ROTARY
DPG
D.V.Sync
X501
PML01
10MHz
17,73447MHz
OSC
72
73
OSC
OSC2
4fsc in
4fsc out
OSC1
CHAR.
OSC
51
50
DOSC IN
DOSC OUT
53
52
T-UP SENSOR
1
X503
M
LD +
LD
2
1
L/D MOTOR
12V
19 LD (-)
LD (+)
20
5
6
4
7
8
1
10
Vcc 1
Vcc 2
OUT 1
C529
OUT 2
GND
IN 2
IN 1
V ref
IC502
ZD501
2
31
32
38
40
61
78
80
81
12
24
28
26
39
27
25
DRUM PWM
REG 9V
1
2
RESET
GND
Vcc
3
IC504
3
SUP SENSOR
SUP END
82
15
R/C
PM901
5
1
P9M01
R/C
+
+
Vcc (A
/D)
96
97
98
79
59
54
43
REC LED
LP / EP LED
PLAY LED
CST IN LED
REC START 'H'
7
SECAM DET 'H'
85
SE / MES 'H'
62
A. MUTE 'H'
90
CLK
91
DATA
OSD 'H'
I - LIMIT
C. SYNC
45
C.Vout
C.Vin
TO/ FROM DECK
TO/ FROM DECK
R550
R551
C536
R557
R555
R554
R553
R556
R559
Q515
R558
R552
R5C5
R526
R525
R5C7
C535
C534
R560
R564
C537
C505
C501
C521
C516
C500
+
C561
C506
L502
ZD506
ZD503
ZD502
ZD507
ZD504
ZD505
C538
C539
99
STAND-BY LED
13
KEY RTN 0
14
KEY RTN 1
Vcc (OSD)
42
75
74
C504
C503
C531
R516
PM901,902
KEY SW
KEY SW
LED
P9M01, M02
ES501
ES502
95
+
+
Q514
5
SUP Reel
+
+
Q522
