VIDEO
111
BLOCK
REEL
SERVO
BLOCK
RAM
-
~
SUPPLY
REEL
DRIVE
IC507
...
14
AMP
••
TAKEUP
REEL
DRIVE
-
f----------~
3
~1C510
9
~
4
--------~------~
QA505, QA506 _..,_
1
_
SET POWER I ...
AMP I
26
15
IC5D1
(AN3621NK)
25 20
CHANGE OF
THIS
SW. PLEASE REFER
TO
MODE INFORMATION
(SUPPLY
TAKEUP
SW
CONTROL)
AS SHOWN
ON
LEFT SIDE
;F
THIS
BLOCK
DIAGRAM
CONSTANT
I I SUPPLY/TAKEUP
23
FF/~_j,J.L
~L~C~
VOLTAGE I ,
·~~fOGIC
FREQUENCY
~J--
..
1----!---1-f-L
__
::_----i_jj
SUPPLY
TAPE}~
GENE
~-
-
1-
;;;;;LV
-~-1-:;:;,~~U~
AMP
DOUBLLER
,---------i
AMP
f--------•"""'
...
-+--,
2
SW
_____2,....
SW I
I 6
[j
DIAMETER
B.P.M
[
....
I 3
~
0'--T-t'
..
~----,
DETECTION +
-"
S·REW I 4
I~
I ....
,---------,
TAKEUP
~
t
,~~
T-FF :
po
•
11
fo I
FREQUENCY
l"'wt·----+------1·1
DIAMETER B.
P.
M
..
COMPARATOR I A I T-REW I S·FF
DOUBLLER
I""
I DETECTION f
L-----.-
-
___
A_j
AMP I
I I
SUPPLY/
~-------J
~~~~TROL:
CONSTANT CONSTANT
H/M/L
VOLTAGE VOLTAGE
DECORDER GENE GENE
------------t---+---------f-+------1~
SUPPLY-REEL
I
i;~~~~~L
10 14
19
...
22
17
M1
M2
12
,.
I P2505
....
M3
4
IC510
S
POWER
CTL P2507
13
H
2
,.
SET
....
r-4iu14
11
F BK
S
REEL
POWER
....
~
I
SON
L
I
S POWER DET
I
!
MOTOR I
SATURATION I
DETECT
IC5D3
AN3834K
( SUPPLY REEL MOTOR
DRIVE)
24
23
19
QJQj~
~t~~
I
DIFFERENTIAL
J-rl
diFFERENTIAL
~
AMP
AMP j
~
t L_+ t t
~
POSITION
SIGNAL
PROCESS
5678910
FFMODE n n n
J
\_/
'--(
\
IC8@
120mVp-p
n n
Y\,:
__!
\_/
\.-1.
\,_
IC8
@ 120mVp-p
n n
i:\
IC8
@ 120mVp-p
'
'-._/
'--1
i : \
I
22
...
RIPPLE
CANCELLER
16
15
TORQUE DIRECTION I
CONTROL I
I
P2~7
l
,----------------'-T_:_A:::E=.:EL::....:..:POW=E::.:R_
4
..fllll--'-=:-=
1
'--t
TO/FROM
SERVO
T
POWER
CTL
,--------~M~1~~~~P:::2~50:::6~~-----,
12
,.
-._
IC501
,.
IC510
......___
""-
:::::--..
MODE INFORMATION (SUPPLY TAKE
UP
CONTROL) 1
~
I P2507
...
~b~\~~~M3.,...
~,..
~~~w
M2
P2506
llrio..
M1
M2
.-----~~-+:::1~5~~-----,
M3
P2506
llrio..
--..,
"@
'-----t--+--t---t--+---'-
2
-ti--<JL
'5
TET
@"'-,
H M L
H
@REW
£oADING
~ADING
•
10
~,.
4-llt
....
-----------'
IC5D2
(MIN15542)
M
®~~~~~
@~~7~D
CD~~?L~/
(REC-PLAY) STILL ADV
PIN PORT FUNCTION
ACTIVE
FUNCTION
PORT PIN
L
@)
FF
@REV
(DFWD
A 0 27
t---+-+--+
L•
OVp-p
M,
2Vp.p
H'
5Vp.p
---------f+--------1~
10 TNG ABNORMAL TENSION L
RO
28
t---+-+-..__H--+-+-t«t-----,
MODE CONTROL
~
SEE
TABLE
X501 6 37
R1
29
~-t-o_s_c-t
__
c_L_o_c_K
____
+-~+----1----~~--~-R-'_,_~-;t---+-+--H-+-+~
QR
515
38 OSC
CLOCK
H
~~~~~~E@
F BK 15
J----J-+-H--1---------------------'
---------+-+----'
H
~~~~~:E@
A BK
17
J----1-+-H--J-----------------------'
---------++----~~19
FWD
FWERD@
TPE
WHITE
TAPE
.....
8
SAP
S FG PULSE
....
'---------i
9
TAP
T
FG
PULSE
-----------------1~41
AST
RESET
-----------------1~42
VDD
+
5V
IC511, AA501
D/A
SUPPLY@
ON
TAKE
UP@
ON
FF
FEW
(!;)
BACK
TENSION CONT
BACK
TENSION CONT
ABNORMAL TENSION
REVERSE@
SET CHAING
SON
13
TON
14
HS(b)
11
f----- -
OFF
16
DREW
18
TEN
NG
22
r---
REV
20
1---------'
SCH N
36
j--
----1
TET CHAING
TCH
N
35
~~2'-R~Ol_D~--~
I
1S,/'-'13=--,-I--41---+-I
SUPPLY TAKE UP I 9
~
8 I
I
"-.....'
I .... 3
1
SB
1
TENTION DATA TENSION DATA
TB
1 2
3
...
I v I
I
~
3 I
~-+--+---S-U-P-PL-Y-----1---+t----1---T-AK_E_U_P
____
,__-+-~t-~~~~-~~~1~1~...
I
I
~
..
•
~f-"--'-~-·----~
32
SB2
TENTION DATA TENSION DATA
TB2
24
I
~yv~
I
I
t_.
..
~
11
II
SUPPLY TAKE UP 1
1
13
~
..
___:
II
f'"~l-'-'--'--------<1,..
..........
-1
33
SB
3
TENTION
DATA TENSION DATA
TB
3
25
f----·---:~~vv~:
I 6
/f-'5:...._;-1_
..................... 34
SB3
SUPPLY TAKE
UP
TB4
26
t----
.....
-------'1'-----"-15
~
6 :
I
rlr.
~
1 TENTION DATA TENSION DATA I V
',J,.
I
L-------~
L
________
~
.....
1
cr5-'-'o6'-01'---<,l,:r7---,
_.
8
AMP
A BK
T
POWER DET
T ON L
REW MODE
IC5D4
4
24
( TAKEUP REEL MOTOR
DRIVE)
23
1~2
19
22
!
MOTOR I
SATURATION I
DETECT
QJQ)~
~·~~
I
DIFFERENTIAL
rr
DIFFERENTIAL
~
AMP
AMP
j
""-l---
t L_+ i +
J\JV'
fV\_[\
1\J\)t\
•''
~
POSITION
SIGNAL
I
PROCESS
IC9
@ 120mVp-p
IC9
@ 120mVp-p
IC9
@ 120mVp-p
5 6 7 8 9 10
H1+
P25Q6
H1-..o!lil~
~
H2+
P2506
H3+
"""~
REF
NO.
2000
SERIES
RIPPLE
CANCELLER
FROM
TAKEUP
REEL
...
16
15
TORQUE DIRECTION I
CONTROL
BLK-5
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