BASF 6106 - Page 52

4.3.2
SPINDLE
DRIVE
SYSTEM
The
spindle
drive
system
consists
of
the
drive
otor,
the
drive
motor
pulley,
the
spindle
drive
belt
and
the
spindle
drive
pulley.
4.3.3.1.
DRIVE
MOTOR
AND
DRIVE-
BELT
CHECKS
a.
Turn
off
the
DC
input
power
b.
Rotate
drive
motor
manuelly
and
in-
spect-
drive
belt
for
wear
,
cracks
or
fraying
edges.
Replace
drive
belt,
if
necessary.
c.
Rotate
motor
manuelly
and
inspect
for
bearing
noises
or
binding.
Replace
drive
motor,
if
nenessary.
(Ref.
to
Drive
Motor
Replacement
Procedure)
d.
Turn
on
DC
power
to
mini
disk
drive
e.
Start
drive
motor
(MOTOR
ON/
active)
f.
Verify
that
drive
motor
and
drive
belt
operates
normally
and
that
drive
belt
tracks
evenly
and
smoothly
in
center
of
both
pulleys.
•«*«•
.-
to
,
l
i
r
4.3.2.2.
DRIVE
BELT
TENSION
CHECK
a.
Take
a
dial
gauge
and
press
it
against
the
drive
belt
until
the
deflection
of
the
belt
is
5 mm.
b.
The
reading
on
the
gauge
must
be
~
80
p
c.
If
the
measured
value
is
out
of
li-
mits
perform
drive
belt
tension
ad-
justment.