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To
Remove
Recorder
from
Case
l.
Remove
all
aceesgories
from the recorder.
2.
Remove
all
control
knobs.
3.
Remove head
cover
(4).
4.
Remove
the
four
panel
retaining screws.
5. Lift
the panel (8) off.
6.
Remove
four screws
from
bottom
of
case-
Lift
recorder
out
of
case.
Unplug
the
speaker
plug
from the
amplifier
chassis,
To
reassemble, reverse
the
foregoing proced-
ure.
D
I
SASSEMBLY
ADJUSTMENTS
'l
.
8.
9.
Record-Playback
Head
l.
Thread astandard frequencytape onthe
record-
er'
2.
Adjust
thehead mounting screws
forthe
angular
position that
will
give
maximum
output while
playing
a
section
of the tape with more
than
?,000
cps.
3.
Tighten the mounting
screws.
Drive ldler
I.
Fasten a
string
around the
oil
cup
ofdrive idler
(66).
2.
Fasten
aspring scale to
the
string
and
measure
the
force
necessary
to
pull drive idler
(66)
away
from
the
motor pulley
(?9)
and
flywheel of
cap-
stan
(95).
CLEAN
ING
The
record
head, erase head, capstan,
pressure
roller,
and
tape guides should
be
cleaned
occasionally
to
remove the tape
residue
which
is
worn off
the
tape
as
it
passes these
parts.
Use
a
soft cloth
and
alcohol
to
remove
the
residue.
Clean
the rubber ti.red
idler
wheels and
belts
with
cleaning
fluid.
3.
A
force
of
I I/
4
to
L
b/
I
pounds
is
required.
4.
To
obtain
this force,
bend
the
metal
lug
that
drive
idler
tension
spring
(?4)
is
fastened to.
Pressure Roller
To vary the pressure of the pressure roller,
pressure
roller
arm
tension
spring
will
have
to
be
adjusted
by varying
the gap
between
the coils of
the
spring.
The
pressure
shou.Ld
be
from
2 5/
B
to
I
3/
g
pounds.
Takeup Torque
The
takeup
torque
is adjusted
by
varying
f
riction
spring (33).
It
should
be
adjusted
sothe
upper
limitis
between
l.
3
-
2.
I oz.
inches.
LUBRICATION
AII
rotating
parts areprovided
wi.th
oilite
bear-
ings and
are
lubricated before leaving
the
factory.
Under
normal use, no lubrication
is
required
for
a
long
period
of
time.
When
lubrlcation
is
necessary,
use sewing machine
oil
sparingly.
When
lubricating
the
flywheel,
remove the cap-
stan
screw
and
inject
4
or
5
drops of
sewing
oil.
TROUBLE
CHART
Symptom
Ca
use
Remedy
Weak output.
l.
2.
3.
Record-playback
head (f07)
not
properly
aligned.
Pressure
pad
(126)
not
contact-
ing
the
head
properly.
Record-playback
head
(10?)
de-
fective.
l.
See "Head
Adjustment".
2.
U pressure padis worn,
replace.
If
spring
(125)
is
broken, re-
place.
3.
Replace.
No
takeup
reel drive
in"Re-
cord"
or "Play"
position.
Iy.
Takeup
drive belt
(35)
broken.
Brake assembly (aa) does
not
open.
Coupling
between
takeup drive
puuey (34)
and
takeup
hub
(30)
too loose.
Takeup hub
(30)
or
takeup
drive
pulley
(34)
does
not rotate
free-
I.
Replace.
2.
Adjustorreplace brakeassembly
(44).
3.
Adjust
friction disc
(32).
4.
Lubricate with sewing
machine
oil.
1.
2.
3.
4.
Page
4
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