Magnavox W801 Service Manual

5283
THE MAahfcvfiX q:s?MFANY SCFWCC
OE^AnTMim
FORT
WAVri|. INDIANA
MODEL
W801, 802
&
812
AUTOMATIC
RECORD PLAYERS
GENERAL
These
Record" Players
utilize
an
11-
inch turntable
and
a
4^
pole,
synchronous
drive motor,
The W81
2 employs
a short
control post and the
W8Q1
employs
a tall
control post.
The
employs
a lighted (22)
tall
control post.
These
record
players,
are designed
for
use with 7",
W\
or
12"
records
at speeds of 16
2/3,
33
1/3,
45,
or
78
R.P.M.
Change
Cycle
The
changer
employs
a
"Velocity Trip"
mechanism which
initiates
the
change
cycle
when
the
Tone
Arm
undergoes
increased
inward
acceleration,
This takes place after
the
stylus enters the lead-out
groove
at
the
end of the
record.
As
the
Tone
Arm
tracks
the record, a post attached
to
the
Vertical Pivot Bracket
Assembly
(106) pushes against the
Striker Slide
[86-3).
The
Striker Slide
is.
fed inward, makes
contact with the Striker Friction Plate
(&2-4L
and moves
the Striker (62-3]
toward
the
Turntable Hub,
The
velocity
of
the
Tone Arm,
during normal
tracking,
is.
not
sufficient
to trip the
mechanism
because the wiping action of the
hub
projection
moves
the Striker
back with each
revolution
of
the
turntable.
However,
when
the stylus enters the lead-out
groove
at the
end
of
the
record,
the
velocity of the Striker Slide
is.
suff
ic-
ient to
cause the
Striker to
move
in
ahead
of
the turntable
hub
projection.
The
projection then engages the Striker
and
pushes
it
far
enough
to
move
the Intermediate Gear
(62-5!
out
of
the
recess
In
the periphery of the
Main
Cam
Gear
(B4). This meshes, the Intermediate
Gear with both
the
Turntable Gear
and
the
Main
Cam
Gear and
initiates,
the
change
cycle.
Failure of
this
automatic
trip
mechanism
may
be due
to
the presence of
contaminants on
the
Striker
and
Striker Friction pJate (Refer to Servicing the
Inter^
mediate Gear
&
Striker
Assembly).
As
the
Mam
Cam
Gear
starts
its
change
cycle rotation,
h
actuates the Muting Switch
Slider (3$),
which
in
turn causes
the Muting Switch Contact
to
ground the pickup
output.
While
the
Main
Cam
Gear
rotates,
the
roller
on
the
Tone
Arm
Lift
Lever (103)
rides
on
a series
of elevations
on
the
Main
Cam
Gear,
which
cause the
Lift
Lever
to pivot.
This
moves
the
Tone
Arm
Life
Rod
(98t
and
controls the
vertical
travel nf ihe
Tone Arm.
As
the
Main
Cam
Gear continues to
rotate,
the
Tone
Arm
sizes the next
record.,
The Cam-
Follower Pin
on
the
Feed
Lever (109)
moves
laterally
with
the
Tone
Arm
to
one
of
three
grooves
in
the
Main
Cam
Gear.
The
selected
groove
determines the
Tone
Arm
set-down
position.
As
the Mairi
Cam
Gear
rotates,
the
roller
located atop the
Record Dropping
Slide (661 contacts a
cam
lobe and
is
pushed outward,
away from
the center
of
the
cam.
This
causes
lateral
movement
of the
pawl
within the
Record
Propping
Spindle
(15)
which pushes
the
bottom
record off
of the
spindle shelf
and drops
it
onto
the turntable.
As
the
Record Dropping
Slrde
retracts,
the
Pawl
Lift
Spring pushes
the pawl
upward and
into position for the following
record.
Ar the end
of the change cycle the Intermediate
Gear
drops
into a recess
of the Main
Cam
Gear and
disengages
from
the
Turntable Gear As
this occurs the
Muting Switch Contact
opens and
the
Cam-
Follower Pin
moves
out
of the
cam
groove and
into
the "play
recess'
F
area of the
Main
Cam
Gear.
Issued:
Navtmtrtr,
1989