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3.
Apply
one
drop of
#10
motor oil
to
the top
and
roller
(26)
bearing.
bottom capstan bearings.
N0TE:
Only a
small
amount
of
oil is
needed
on
CAUTI
0N:
Be
sure
no
oil
seeps
onto
the
drive
each
biaring.
It is
better to
use too
little
pulleys(66A)and
(66E)
or
onto
any
part
of
rather
than too
much. Oil
on
running
sur-
the
capstan
shalt
extending
above
the
top
faces,
between
motor
pulleys and rubber
deck
plate.
idlers,
could cause
poor
drive or
no
drive
atall,
aswellas excessivewow andflutter.
4.
Appiy
one
drop
of
#10
motor oil
to the pressure
MECHAN
I
CAL
ADJ
U
STMENTS
Reel Stands
twoallenset
screws
and
raise
or lowerthe
reel
stands.
Tighten the allen set
screws
to secure the
reel
stands
Ttre reel stands are
to
be
adjusted
so
the
tape
in
place.
does
not rub
on
the
reel edges. To adjust,
loosen
the
ELTCTRI
CAL
ADJUSTMENTS
Oscillator
Model
RP-32I (Erase
Head)
A8
for
I.
5V
With
the
unit
operating
in
record position,
measure
Record
Equalization
the oscillator plate
voltages (pins
I
and
6
of
Vb) with
an
AC
VTVM.
Adjust
the oscillator coil (Al,
Models
Connect
a
l00Q
+
l%
resistor in series with
the
low
side
320, 320A,
or
.A6,
Model RP-32I) forequal
voltages,
of
the
record hEad.
Connect
an
AC VTVM across
the
approximately I00V
RI!fS
AC.
Bias
resistor.
Remove the
bias oscillator tube. Inject
a
ISKC
Audio
signal
to
the
high level input
jack
and
adjust
the
equalizer
coil
to peak
at ISKC (Repeat procedure
for
second channel
on
stereo
models).
Connect
al00Q+
l%resistor
inseries
with
thelow
side
of
the record
h6ad.
Connect
an
AC VTVM aeross
the
Record Level Meter
resistor.
With
the
unit operating
in record
position,
adjust
as
follows:
Remove
the bias oscillator tube
and
disconnect
the
record head.
Set
unit
for
record,
1
l/
2 ips
operation.
Models
RP-320,
R.P-320A (4
Track
Head)
Inject
a
lKC audio signal to
the
high level input jack.
Left
Channel
3 3/4 ips A2
for.02V
Adjust volume control
for
3.?5VRMS
atthe
record
Models
RP-320, RP-320A
(2
Track
Head)
head
jack
(measured
with AC
\ITVM). Adjust
record
Left
ChanneL?
L/2
ips A3
for.055V
level meter adjust control, R3
or
R4
(RP320),
R?0
Models
RP-320, RP-320A
(4
Track
Head)
(RP32l)
Rl04
or
Rl05
(RP320A),
until indicator
eoin-
Right
ChanneL
3 3/ 4
ips
A4
for
.02V
cides v/ith
the
intersection of the red
and
black
areas
Models
RP-320, RP-320A
(2
Track
Head)
(Repeat
procedure
for
second channel
on
stereo
Right
ChanneL
7
L/
2
ips
A5
for
.055V
models).
TROUBLE CHART
Symptom
Cause
Remedy
Poor
tape
drive
in
Playback l.
Oil
or
grease
on
driving
sur-
l.
See
"Cleaning".
and Record.
faces
of
the
drive
wheel(66A)or
(66E)
and
on upper pulley
on
capstan
motor
(57).
2. Oil,
grease,
or
tape
coating
2.
See
"Cleaning".
oxide
on pressure roller
(26)
and
on
upper
portion of
capstan
shaJt.
No tape drive
at
7
l/
2
Lps l.
Motor
spring
(82)
disconneeted
l.
Replace
motor spring
(82).
speed
in
playback and
Re-
or
missing.
cord.
No
tape drive
at
3
3/4
ips
l.
Motor spring(?8)
disconnected
l.
Replaee
motor spring
(?8).
speed
in
Playback
and
Re-
or
missing.
cord.
Take-up
reelwill
not
takeup l.
Looseset screw
(3)inreel
plat- l.
Tighten set
screw
(3).
tape
in
Playback
or
Record.
form
(2) causing
reel
pladorm
to
slip
on
motor
shaJt.
No
rewind.
l.
Loose
set screw (3)
in
supply l.
Tighten set
screw
(3).
reel
pladorm
causing
reel
plat-
form to slip on
rewind motor
shaJt.
Page
6
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