Akai X-165D Service Manual

reel table base plate
VI.
MECHANISM
ADJUSTMENT
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1.
PINCH
WHEEL
ADJUSTMENT
It
is
important
that
the
pinch
wheel
shaft
be
kept
in
perfect
alignment
with
the
capstan
shaft.
Proper
pinch
wheel
pressure
is
between
1,000
and
1,150
grams
when
the
unit
is
operated
at
the
tape
speed
of
7-1/2
ips.
Any
deviation
from
this
specification
will
result
in
wow
and
flutter.
Check
pinch
wheel
pressure
with
a
spring
scale,
and
if
necessary,
adjust
the
pinch
wheel
load
spring.
2.
TAKE-UP
IDLER
WHEEL
ADJUSTMENT
The
take-up
idler
wheel
must
be
kept
in
perfect
alignment
with
the
take-up
reel
shaft.
In
fast
forward
operation,
the
idler
wheel
contacts
the
upper
knurled
wheel
of
the
take-up
reel
shaft
assembly,
and
conversely
contacts
the
lower
knurled
wheel
during
record
or
play
operation.
Adjust
idler
wheel
load
spring
so
that
the
idler
wheel
pressure
is
kept
between
50
and
80
grams.
The
idler
wheel
wears
rapidly
if
the
pressure
is
excessive.
Slippage
occurs
if
the
pressure
is
less
than
specified.
(a) Rewind reel shaft assy. (b) Take-up ree! shaft assy.
reel shaft __
ba
reel
table
__
reel
stcpper
felt Alutch
| drive shaft
rewind rubber
ABE
ring
rewind pulley ===
conical
spring
=
netal
washer
felt
clutch
a
retainer
HN
take-up
washer
drive
wheel
ay
.
Le
eed
ain
Star-shaped
spring
Laiibaass
washer
—-+===">>
metal
washer
=
retainer
—~—“s=——nylon
washer
|
i
plate
oil
ee
oilite
metal
mtg.
plate
TF
oilite
metal
Hf
star-shaped —pom : oe
spring
for
brake
|
==-—Paper
washer
3
coil
spring
ate + - 1
ia retainer __wasner
| pulley B =———retainer
x: nylon
—— washer
57 set sleeve
Fig. |
3.
REWIND
IDLER
WHEEL
ADJUSTMENT
The
rewind
idler
wheel
must
be
kept
in
perfect
alignment
with
the
rewind
reel
shaft.
The
amount
of
pressure
on
the
knurled
motor
bushing
should
be
about
50
grams
during
rewind
operation.
Adjust
both
the
idler
load
spring
and
rewind
roller.
4. INTERMEDIATE WHEEL ADJUSTMENT
The
intermediate
wheel
is
located
between
the
rewind
idler
wheel
and
the
rubber
ring
which
is
used
on
the
upper
part
of
the
supply
reel
shaft
assembly.
In
rewind
condition,
it
contacts
these
parts
while
simultaneously
transmitting
motor
torque.
An
adequate
pressure
is
50
grams.
Adjust
the
load
spring
of
the
intermediate
wheel
if
the
pressure
is
not
sufficient.
5. TAKE-UP REEL SHAFT ASSEMBLY
ADJUSTMENT
Felt
clutch
material
is
attached
to
the
bottom
side
of
the
reel
table
base
plate
so
that
recording
tape
will
not
stretch
during
fast
forward
operation
due
to
excessive
tension.
To
check
the
amount
of
friction
of
this
part,
install
a
5-inch
reel
with
a
60
m/m
diameter
tape,
and
gently
pull
the
end
of
tape
upward
with
a
spring
scale.
Adjust
the
conical
spring
so
that
the
amount
of
tension
at
this
part
is
kept
between
400
and
500
grams.
Other
felt
clutch
material
is
attached
to
the
take-up
drive
wheel.
This
is
to
provide
proper
slippage
during
record
or
play
operation.
The
procedure
for
checking
friction
of
this
part
is
the
same
as
the
foregoing,
and
between
150
and
200
grams
of
friction
provides
the
best
results.
Adjust
the
star-shaped
spring
just
under
the
take-up
drive
wheel.
When
the
unit
is
set
to
rewind
operation,
the
amount
of
friction
of
this
part
will
decrease
to
from
15
to
20
grams.
Check
to
see
whether
this
is satisfactory.
If
not,
readjust
the
star-shaped
brake
spring
and
the
pressure
of
the
spring
retainer
washer
accordingly.
(See
figure
1
(b)
at
right)
6. SUPPLY REEL SHAFT ASSEMBLY
ADJUSTMENT
Felt
clutch
material
is
used
between
the
lower
side
of
the
reel
table
base
plate
and
the
rewind
rubber
ring
to
protect
recording
tape
from
excessive
tension
during
rewind
operation.
To
check
the
amount
of
friction
of
this
part,
place
onto
the
supply
reel
table
a
5-inch
reel
with
a
60
m/m
diameter
tape,
and
gently
pull
the
end
of
tape
upward
with
spring
scale.
Adjust
the
conical
spring
so
that
the
tension
is
between
400
and
500
grams.
Other
felt
clutch
material
is
attached
to
the
rewind
drive
wheel
to
provide
proper
slippage
during
record
or
play
ope-
ration.
The
procedure
for
checking
friction
of
this
part
is
the
same
as
the
foregoing,
and
between
100
and
120
grams
of
friction
gives
best
results.
When
the
unit
is
set
to
fast
forward
operation,
the
amount
of
friction
will
decrease
to
from
15
to
20
grams.
Check
to see
whether
this
is
correct.
If
not,
readjust
coil
spring
and
spring
retainer
washer.
(See
figure
1
(a)
at
left)
1]
SAM Sd ante INR Oden EN A i a ome aN AD ZS

Akai X-165D Specifications

General

Brand	Akai
Model	X-165D
Category	Tape Deck
Language	English