1-7-1
BLOCK DIAGRAMS
Servo/System Control Block Diagram
T7500BLS
CONTR
OL
HEAD
CL402
AC HEAD ASSEMBLY
MAIN CBA
KEY 1
ST-SENS.
T-REEL
KEY 0
DV-SYNC
C-SYNC
C-SYNC
V-ENV
REMOTE
CTL(+)
RESET
ROTA
D-REC-H
D-REC-H
REC-SAFETY
A-MUTE
SCL
SDA
A-MUTE
CTL(-)
DV-SYNC
V-ENV
ROTA
END-SENS.
IC201
(SERVO/SYSTEM CONTROL)
14
94
95
9
7
80
34
15
10
13
74
33
44
65
72
6
5
RS201
REMO
TE
SENSOR
CTL AMP OUT
97
AL+5V
D203
S-LED
CTL
TP201
(DECK
ASSEMBLY
)
END-SENS.
T-REEL
ST-SENS.
Q202
Q206
Q201
Q205
RESET
TIMER+5V
SP-MUTE
SP-MUTE
12
SW211
REC
SAFETY
TO
VIDEO BLOCK
TO
AUDIO BLOCK
KEY
SWITCH
KEY
SWITCH
SW201 SW204,SW206
SCL
(MEMORY)
SDA
6
5
REC LED
22
REC LED
23
P-DOWN
84
P-ON-H
P-DOWN
P-ON-H
31
D204
REC
AL+5V
LD-SW
1
I
2
C-OPEN
45
71
SW212
LD-SW
CS
7
TO
POWER SUPPLY
BLOCK
SW205,SW207 SW210
SDA
SCL
TO
CHROMA /TUNER
BLOCK
SDA
SCL
IC202
WF3
22
CTL(+)
11
CTL(-)
M
M
LOADING
MOTOR
CYLINDER ASSEMBLY
CAPSTAN MOTOR
SENSOR CBA
(ST-SENSOR)
SENSOR CBA
(END-SENSOR)
DRUM
MOTOR
PG
SENSOR
CL201
C-FG
C-CONT
D-PFG
90
76
87
LD-CONT
82
D-CONT
77
P-ON+12V
P-ON+5V
M
CAPSTAN
MOTOR
C-F/R
66
D/L+12V
DEF+B
AFT-IN
AFT-IN
8
IF-MUTE
IF-MUTE
21
1
P-ON+12V
2
P-ON+5V(2)
3
C-FG
4
C-F/R
5
C-CONT
6
FG-GND
7
LD-CONT
8
D-CONT
9
D-PFG
10
M-GND
11
D/L+12V
12
D/L+15V
26
FM/TV-SW
FM/TV-SW
YCA-SOUT
YCA-SCLK
YCA-CS
68
69
70
YCA-SCLK
YCA-CS
YCA-SOUT
RF-SW
18
RF-SW
