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[
eseription
Output when T END S input in RECORD
Output in special PLAYBACK (Back and forth SEARCH, STILL, F. ADV
PLAY 3, etc.)
Signal to prohibit audio output/playback output
22
TAPE END
PI
yo
1¢301 (SYSTEM CONTROL) LC66516B-4A46
———
—————
re
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ey
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ee
[eP-t BOARD (SY-A(SYSCON) /TM-ACTIMER))
!
°
Description
ae
;
(SY-A (SYSCON) )
'
(TMA CTIMER J}
1
SSB IN
I
Input of serial data from timer microcomputer.
ALL_5. 0 Come
H
ep-1 ee
=
Gama
H
Ae
2
SSB OUT
eda: ¥ | ADMUTE
|
MUTE
Output of serial data to timer microcomputer.
(SV—A)
Output in the mode of delivering reproduced picture.
Signal to indicate record, and output in REC mode.
5
O/1 CLK
Input of CTL pulse used for detecting of no-signal part of tape and 12-24H
playback tracking.
0/1 DATA
CTL pulse "0" or "1" data (for VISS, VASS).
Not use.
Hse
cu
CN7I
eee
ee Be
ee
eee
(See page 66)
ROW ERASE
TP732
=TP73t
| Connectedtogrond.
=
sssisisi'"'s'"'"'sSC'*"d
to ground
Connected to ground
Clock oscillation terminal.
5
7
}— Se
=
=
(7s
10
seo eis) [ty
Bess | pack
Ft
| 30
TEST
PW—1 BOARD |—ALNATS_
3. BY [12 PART
Y
ti
ae serat — tee
T Y
alll
(See page 74) -}
afi
Y
=
0sCi
(18 :(NC
|
—
-
[eter en
7
4k-PWM
| |
ca
eed
a
| 8 |
| 9 | HOOMP |
10s |
eo
3 |
4
| t6 |
| 7 |
| |
fe alo tl
nS)
: om
4
RF SW 25
Input of head changeover signal used for timing of the servo circuit and detecting
of rotation of drum.
ig
100/6. 3
R3043
1K
-—
yee TT Rota in
SRP
a I ST
60 PWM
O
Signal to switch capstan FG signal.
Serial output data to SV IC.
RF SW30 P23
0/1 CLK
PSO
0/1 DATA P31
LODING MOTOR
DRIVE
17
T LAP ON
Zz fe}
-
=
nan
oO
0/1 DATA
| SVSDATA
|
SDATA
Capstan FG switch signal to change over frequency division.
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o
R3066
220K R3067
220K
R3068
220K
CTL
pulse changeover signal to detect VISS/VASS signal in ALARM. T/D
SEARCH.
H_coMP
(> REC_GATE
VD MUTE
—o_
<a
PSVSCEK [0 | Serial
outpurcockosVICSSSCSC~C~S—~—SCSY
po
Zz
Sos
oz
2*5
=
ae
2 eee
Not use.
For changeover of NTSC/PAL.
Output except for POWER OFF mode.
5V power supply terminal.
VOLTAGE : [REC)
PLAY
MODE
02
ICHROMA|
0
PEO FL END Sw
sw sic Paz (Ceo
|
;
| Oo | Output of SV serial output MC-F/R
as it is.
pos TEND S
F anv P43 Qa
rave
|
IC731
ai
24
"H" output in REC 2 mode 24 H RECORD and PLAY 2 mode 24 H continuous
:
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i
is
are
wee cu 150 (oop
Sarcen Be
IVERTEE
!
PLAYBACK.
| 0 | Output in each mode of STILL, R. STILL, PLAY 3, R-PLAY 3, F-ADV,
WC BRK
PS!
{
wuC_BRK
SV-A)
oFe,
[ay
;
prtiaaes
R-F-ADV.
'
H
ae
ME
rcisats
| © | Output in FF or REW mode. (For changeover of MIX AMP GAIN).
teh
nn
C___tew {7}
ia a Oa
© sv_cik
LI
ee
| or |
Reference voltage input for sensor comparator input.
lv
CD TIWER_OUT
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ALARM
OUT |
me
ae
a
2 24) sou I
ws
ne
| or
| SW to judge if the cassette is recordable or not.
no
TT)
;
TAPE END P71
=
=
{AOA
KH 07309
oa
TAPE END Out |
;
5
7
;
2. seam ——a
1
n3072
-
spray 92 Soo BGM) aoe
Is8i33
eet
a
78-1 poano
Sensor input to detect dew condensation. The input signal becomes HIGH when
(MECHANISM ——
al
wo wre #73 Qe
Lea
ese
(see vanase}
dew condensation is detected.
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{|
PB H PBO
:
[> PB)
re
:
anlane
mite
sola
|
Stew
Javon)
oie
Levant 3]
Drum servo (speed and phase)
[ocean
Sensor input to detect the beginning of tape.
'
een
Cen)
am
rh,
| Sensor input to detect the end of tape.
l
Cenco
|p
07303 $40
Capstan speed servo
seamen
tit?
a
=e
Scape
Jtsvea
wt |
| Cascten ohees etre
|
| ot
| Connected to ground.
a
=
5.11
-
Capstan
phase servo
;
q
F
sett
Mt
site
p eso2y
asone i
|
Poe
i.
7
Faont Ts
dee
P
p
SW for front loading mechanism. (Changes when front loading starts.)
m
w907
ass
@)
: fans wT pei nae |
Mi
Hoan vo_tW
Keer
Capstan servo (speed and phase)
SW to indicate mechanism position.
ie
lt
4a.
=
ee
pa
3)
A
@
we
GP BOARD | ays y COM
oa
Torb----
oats
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page
46)
=i
TBs soar
Ret sidral
ie Be
SW to indicate mechanism position.
;
wer
DTCI44es
8
As
ey
aye
5
a
(See page 47)
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soo
maou
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ae
a
H
18, soarof ="
;
er
(See page 62)
aa
SW to indicate mechanism position.
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1S8133
eas!
See page 43 VD-A) t
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ALIN
L eet
[aur
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rose Cpe?
DAG?
1C304
OT
a?
(See
pag
ys
tAD~a)
s
pers
.
DAS?
ay
DEW DETECT
,
us
(See page 47, 49 SV-A)
(See page 55)
]
vo Jeno
|
Oo |
REC_REF
TREEL FG AMP
'
os
4
Po
|
:
H
i ab
| For changeover of POWER ON/OFF.
a
recf
|
ld lr
|B |
a
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