Zenith XBV243 series Service Manual - Mechanism - Vcr
MECHANISM - VCR
VR168 - 923-03485
4-13
D35E COMBO - SERVICING
Purpose: To
determine
if
the
Mechanism
is
in
the
correct
Position when a Tape is ejected.
Mechanism
Alignment
Position
Check
1)
Turn
the
Power
S/W
on
and
eject
the
Cassette
by
press-
ing
the
Eject
Button.
2)
Remove
the
Top
Cover
and
Plate
Assembly
Top,
visual-
ly
check
if
the
Gear
Cam
Hole
is
aligned
with
the
Chassis
Hole
as
below
Fig.
C-2.
3)
IF
not,
rotate
the
Shaft
of
the
Loading
Motor
to
either
Clockwise
or
Counterclockwise
until
the
Alignment
is
as
below
Fig.
C-2.
4)
Remove
the
Screw
which
holds the Deck Mechanism and
Main
Frame
and
confirm
That the Gear Cam is aligned
with the Gear Drive as below in Fig. C-1(B).
5)
Confirm that the Mode S/W on the Main P.C.Board is
aligned
as
below in Fig.C-1(B).
6)
Remount
the
Deck
Mechanism
on
the
Main
P.C.Board
and
check
each
operation.
Gear Cam
Gear Drive
(C)
Mode S/W
(B)
Test
Equipment/
Fixture
Blank
tape
Test
Conditions
(Mechanism
Condition)
Check
Point
Fig.
C-1
Fig. C-2
CHECK
DIAGRAM
BOT
TOM
VIEW
TOP VIEW
Gear
Cam
(o)
and
Gear
Drive
(o)
groove
alignment
VCR ALIGNMENT
ALIGNMENT POSITION CHECK