Sony CCD-TRV67 - Video Camera Recorder 8mm, Service Manual

Page: 52 / 228

CCD-TR317/TR517/TRV17/TRV37/TRV47/
TRV57/TRV57P/TRV67/TRV87/TRV87P
3-13 3-14
( ) : Page No. shown in ( ) indicates the page to refer on the schematic diagram. 3-6. SERVO BLOCK DIAGRAM
IC401
wg
IC401 wk
50mVp-p
80mVp-p
13
µ
sec
13 µ sec
IC401 tj , tl , ya»
1.3Vp-p
5.6 msec
IC401
ws
IC401
qh
2.8Vp-p
2.8Vp-p 30 Hz
5.6 msec
IC301
yf¢
IC301
tk
0.75Vp-p
2.2
µ
sec
0.75Vp-p
2.2
µ
sec
CFG VCC
CFG(+)
CFG(-)
WAVE SHAPER
CAPSTAN FG
LPF
WAVE
SHAPER
WAVE SHAPER
CAPSTAN SERVO
PROTECT
SWITCHING
DRIVE
SWITCHING
PWM
PWM
DRIVE
SWITCHING
COM
OUTPUT
DRIVE
VS
DRUM MOTOR
M901 U IN
V IN
W IN
U
V
W
OUTPUT
DRIVE
BUFFER
H3(-)
H3(+)
H1(+)
H1(-)
H2(+)
H2(-)
Vcc
STBY
FRC
U IN 1
U IN 2
V IN 1
V IN 2
W IN 1
W IN 2
POWER
OFF
HE
POWER
U
V
W
VH+
VH-
CAPSTAN MOTOR
M902
H1(+)
H1(-)
H2(+)
H2(-)
H3(+)
H3(-)
LOGIC
VS
CAPSTAN MOTOR DRIVE
VTR UNREG
CAPSTAN FG
VTR D/D ON
OSC
V REF
CONTROL
LOGIC
)
120
CAP ON
OUTPUT
VCC 56
MT UNREG
MT UNREG
MT UNREG
VTR UNREG
D 2.8V
VTR/CAMERA CONTROL
(CN931
Q311
DRUM FG/PG WAVE SHAPER
DRUM/CAPSTAN PWM DRIVE
DRUM MOTOR DRIVE
L305
L304
DRUM SERVO
VC-234 BOARD
DD-134 BOARD
(SEE PAGE 4-27)
B200-MECHA
COM
U
W
V
4
62
60
58
59
61
57
6 63 9 42
1
2 5
IC401
(5/6)
IC001
+
-
-
+
+
-
H
H
H
46
48
46
48
DRUM START
45
47 47
45
8
7
STANDBY
FRC
VCC 2
SWITCHING
Q312
58
1
64
10
11
13
21
22
30
17
15
14 -
+
+
-
-
+
-
+
14
43
44
43
44
29
30
32
27
-
+
+
-
LPF
IC401
IC301
28
25 +
-
13
62
61
64
25
80
19
78
79
47
44 87
96
85
94
98
97
89
95
MECHA VD
MECHA FLD
XCS KINUTA
VC SI
VC SO
XVC SCK
SWP
ATF SAMPLE
VDD
VDD
VDD
AVRH
A VDD
X1
X0
DRUM FG
DRUM PG
1
2
68
X901
20MHz
69
50
DRUM ON
CAP ON
CAP FWD
DRUM START
DRUM PWM
CAP PWM
IC902
(2/2)
SERVO
22
16
20
19
18 3
2
1
ATF
REC Y RF
REC ATF
PB ATF
+ 7
49
IC201
IC101
CAMERA/VIDEO(2) BLOCK
CH SP1
CH SP2
VIDEO
HEAD
FG
FG-PG-COM
PG
VCC1
IC001
(2/2)
A/D
D/A
REC/PB
AMP
LPF
LPF CAP ERROR
DRUM ERROR
CN981 CN931
0.25V
CN931 CN981
DRUM VS
DRUM ON STBY
CAP ON
CAP FWD
9
3
4
C HALL GND
C HALL VCC
CAP U
CAP V
CAP W
•
•
•
9
10
7
8
5
6
CN976
VTR UNREG
CAP VS
CN978
•
SELSLP2
RF
• •
Vcc2 Vcc1
120
101
100
(4/6)
116
117
CAP FG 115
CFG HMS 109
D 2.8V
118
111
16
REC C RF
11
6
REC RF
PB C RF
27
28
34
33
•
•
• •
IC401
(6/6)
R408-410
DRUM DRIVE
CURRENT SENS
PG
FG
DRUM FG
DRUM FG
(1/2)
FG OUT
OFF SET
ADJ
10
1
2
D 2.8V
(IC291 ) 21
CFG DUTY
CAMERA/VIDEO(2)
12
11
RF SWP
CAP FG
FOR CHECK
CN982
(4-25)
(4-28)
(4-91)
(4-12)
(4-17)
(4-28)
(4-28)
(4-27)
(4-27)
(SEE PAGE 3-10)