Revox A76 Service Manual

The
REVOX A76
FM-Stereo Tuner
is a piece
of
high
quality
equipment
which
passes through
a
series
of
scrupulous
tests
during production
as well as
a
very
careful
final
inspection.
Therefore, when
servicing this
tuner,
it is
absolutely
ne
-
cessary to check
all
vital data
in
order to
ensure that
the
original characteristics
will be
maintained.
Important
When
soldering
Field
Effect
(
FET
)
and
Radio
Frequency
Transistors the
following
precautions
must be
observed:
Tuner must be
turned
off.
Work
with
earthed
soldering
iron only.
Provide
electrical contact
between
tip
of iron
and tuner
chassis.
2.
DISMANTLING
2J.
Removal of
front panel
—
pull
rotary knobs from
their shafts
—
carefully pull
off
front
panel
which is
held
by
six snap-on
fasteners
ZZ
Removal
from
cabinet
—
place
top
side
of cabinet onto a
soft
pad
—
undo
four
chassis
mounting
screws
—
pull chassis
from the
cabinet
—
remove
spacerplates
(with rubber
strips)
—
remove upper
and
lower
shielding
panel
Z3.1.
Stranded
steel-wire
—
Take
off pulley
(
1 )
and orient It so that
the
hole
between
two
angled eyelets
is in
12
o'clock
position.
—
Lace
large
loop of steel wire through
left
hand eyelet
and
wind 1 1/2
turns
of wire onto pulley.
Slide pulley
onto
shaft
and
secure it
by
pushing a
suitable rod
(round needle
file)
through hole
In pulley and hole
in panel behind.
—
Lace wire
over
guide rollers, along
pointer slide and
hook
onto removed drive-pulley
(2)
—
Turn
tuning
capacitor ccw
to stop, slide
drive pulley
with
slot
pointing downwards
onto capacitor
shaft.
—
Turn
drive pulley cw
to stop. (Allow
1 to
rotate).
In this
position there must
be exactly 2 turns
of
steel
cord
on
the
drive pulley.
2.3.2.
Nylon cord
—
Find
approx, centre
of cord and
wind
2
turns
onto
drive
shaft
(3)
—
Take
off drive pulley
(2)
and connect
R.H.
end
of
cord.
Put
drive pulley
back
onto
cap
shaft, slot
pointing up-
wards.
—
Turn
pulley
(
1 )
cw
to stop
and attach
nylon
cord via
spring
(4)
to the
R.H. eyelet.
—
Run
dial
drive
several times back
and
forth
and
check
for
proper winding
of
dial
cords.
4

Revox A76 Specifications

General

Brand	Revox
Model	A76
Category	Tuner
Language	English