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Rs.ocro
I
7,
ANALOG PLAYBACK FREOUENCY RESPONSE ADJUSTMENT
(UAIN
P.C.B.)
Praper.llons
TGI
Setup
T@ls
A
Jigs
Maasurlng
lnstruments
1
2
ACC
?..i l.p.
(OZCFiii)
Scrowdrlver
(-)
1
2
Fr€quency Count€r
EVM (AC
Range)
. Adjustmrnt Sttps
(l)
Play
the tkHz
End (xlHz
lesi
lonos on th6
ACC
Tasl
rrp!
(OZZCFM)
8nd adjust
potenliomolGrs
ROls
(Lch) and
R6a0
(Bch)
unlll ihs
FIXED
ouT outpui lev.l
at
fil
Hz
ls within
0
r0/
-
1
dB lrom
thst
et
I
kHz.
(2)
Play
th€
lkHz
and
12.5kHz
lesl
tones on
the ACC
T.st
llp.
(OZCFll)
and
adlust polontlomst€rs
Ra43
(Lch) and
R64,1
(Bch) untll
ihe
FIXED OUT
oulput
l6v6l
at
12.5kHz
ls wlthln
0r0/-1dB
from
at
1
kHz
Nol[:
.
Ourlng adiustm€nt, monitor playback frequency
with
a Frequ€ncy Counter
.
Mlsallgnmont
wlll atfoct
thc
ACC
Test tape
(OZZCFM)
playback frequency
rosponse
8.
TAPE SPEED ADJUSTMENT (TRAY
P.C.B.)
arations
Tesl
Setup
T@lo
&
Jlgs
Measuring
I
1.
ACC
T.3t
tap.
(Ozz'CWAfI.
3kHz
-
1odB
2,Screwdriver(-)
1
Froquency Countet
. Adlustment
Stops
(l)
Plsy
foMard the
3O00Hz
tosi
tone on
the ACC
T..l
lrp.
(OZehrATland adjusl th6 sional
lroquency at
lhe
FIXED OUT
lack
lo
3000Hza
l0Hz
with potentlomster
RSO2
(See
Fio
29)
(2)
Pley backward
the
3000H2
test looe
on th6 ACC
T.rt t.pc
(OZZCWAT)
and adiust
ihe signal
froquency at
the
FIXED OUT Jaok
to
3000Hztl0Hz
with pot€nllometor
RSIIA
(See
Fig
29).
9.
OUICK
REVERSE
SENSOR ADJUSTfI,ENT
GRAY
P.C.B.)
.fho
purpose
of
thls
adlustment
is to
set
EOT
s€nsor's sensltlvity
to
the
magnetic
and
leador
portlons
ot
caslett€
tapas (qulck
r€verse
senso.)
.
Adlushent
Stepg
(1)
Play
th€
leader tape portlon
ol
an
ACC
Blrnk
l!p.
(MAXELL
UD-IgO)
8nd adjust
lhe polentlal
dilterence
bolw€en
JW32
and R03l
to
1
V
with
potentlomeier
R036.
Proparalions
Tesl
Selup
T@ls
&
Jlgs
M€asualnO
lnslrumenls
1
ICC
Bl.nl
trp.
(fAxELL
UD.r00l
(commcrclally
.vall.ble)
Scrowdrav€r
(-)
l.
EVM
(OC
F.nO.)
Fig.27
l-
|
(S@ Fig.25)
/;;P
-i@i@
I
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mv
p
c.e.
lP
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*'f,1'
- 16-
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