5. ADJUSTMEI{T AI{O iIEASUREMET{T
(AUOIO)
IfSTRUCTT0IIS
:
-
Predulionr: Prior
ro any adjustmenl or
meâsuremênt,
carbon leir.chloride,
and
fully
demagnerize rhe heôdi,
clean the head slit' with
gauze
containing âlcohol or capsian
and
similâr
parts.
5.4
MECHANICAL
ADJUSTMENTS
r-
54.1 Pl.y
Operation Chock
{t)Tinin!
Ch.cr
.Depress
button
PLAY,
and
ch€ck
lo
make sure
that
the
take.up
reel rotates la.st
and then that
the
pinch
.olle. rotates. Samuitaneour rotation ol these reel
and roller is not
acceptable.
NOTE: For
this
check. slowly
depre$ th€ button
withour tape mounted regârdless ol locking conda.
.Slowly
depresr button
PLAY,
and the take-up
reel
will start rotation. At thât time, check
to
make sure
rhal â clearance belwe€n the
pinch
roller
and capslan
is less
ûan 0.5
mm.
ï
{21Timinr
Adiustm.nt
lf
ool of
specification,
bend the
pârt
of the
pinch
roller
b.acket which faces
thè
head chassis sropper.
In rhe
figùre
rhown above, bend the
pâ(
in the direction
ot
A
to
decreate
the clearance. To
increâse
the clearance,
bend
the
part
in
the direction of 8.
NOTE:
After adjùsûenÎ, check to be su.e that the
pinch
roller
bra€ket does
not
contact the
heâd
chassis
rtopper in PLAY mode.
5A-3 Torqu3
Adiurtm€nt
{FF,
REWI
Set thê extended
parts
{B
in
the figure shown
aoove,
of
the torque adiustmênt leaf spring
(A
in ûe liqure)
ot the FFIREW idler
on âny one
ot three srepprng
NOTE: To increase
torque, set the e)(tended
pârts
to
the stepping
pan
of
'INCRÊASE"
and ro decreâre it,
set
those to lhe ræpping
pân
of
"DÊCFEASE'.
Adjusting ranqe:
70
-
110
s.cm.
B
A
-E
5A-4 Pinch
Rollor
Pr€3ling
Forco
As shown
above,
meâsure
pressing
force
of
the
pinch
roller using
a
gauge.
Fof measurement,
proceed
ôs
follows. Pull
th€
pinch
roller
off the caprtan shalt
as shown wath the
a.row, and
graduallv
release
n 1o the
€apsran. Jusr when the
pinch.oller
star6 rorating,
reâd
an
indicat,on
ol â
gàuge.
Pressrng torcé
must range in
300
9
!50
9.
lf
our ot the
range,
bend th€
pinch
roller
spring in
ùe direclion of B or C at secrion
A shown
NOTE:
To increâse
pressing
force, bend the said spring
in
ihe di.ection ol 8, and to decreare
the
forc€,
bend
iÎ
in
the direction of C.
5A-2 Paui€ Timing
Depress
burton
PLAY,
slowly depress butîon PAUSE,
and
the takeup
reel
will
pause.
At
that time. check
to ensure
that a cleârance between the
pinch
roller
and capstan ranges from
0.2 to 0.5
mm.
lf
out of
the ran(le, adiun
a
bending
angle of $e
pinch
roller
brâcket ârm
(view
A).
NOTE: To increase a clêarance
between the
pinch
roller
.nd cap5tan. decreâse rhe dngle
{in
the d,'ecl,on
of C in
the
figure).
To decreâse the cleanrace, increase
theangle
{in
the
direct
on ol B).
.A
Y?-
B
c
:
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