Pioneer PL 990 Service Manual - Page 11

Adjustments

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5. ADJUSTMENTS 5.1 SPEED ADJUSTMENT (1) Press the Cueing button to the 33-1/3rpm speed. (2) Lift the tonearm from its cradle to play the track for 33-1/3rpm of test record. (3) Insert your screwdriver into the L hole (33-1/3rpm) of the mo- tor, adjust the VR to get the speed value and W&F value from the jitters meter, the speed value must in the range of 2940 3090Hz and the W&F value is 0.2%. (4) Lift the tonearm to play the track for 45rpm of the test record. (5) Insert your screwdriver into the H hole (45rpm) of the motor, adjust the VR to get the speed value and W&F value, the range of speed value 2900 - 3090Hz and W&F value is 0.2%. (6) Reset the speed value and W&F value of 33-1/3rpm again. TOP VIEW PL-990 BOTTOM VIEW 0 00 5.2 CHANGE THE LINE VOLTAGE SELECTOR (for RDXCN1 type) The line voltage selector switch is located on the top of the cabinet of this turntable. 2 2 22 0 II 0 0

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PL
-990
5.
ADJUSTMENTS
5.1
SPEED
ADJUSTMENT
TOP
VIEW
(1)
Press
the
Cueing
button
to
the
33-1/3rpm
speed.
(2)
Lift
the
tonearm
from
its
cradle
to
play
the
track
for
33-1/3rpm
of
test
record.
(3)
Insert
your
screwdriver
into
the
L
hole
(33-1/3rpm)
of
the
mo-
tor,
adjust
the
VR
to
get
the
speed
value
and
W&F
value
from
the
jitters
meter,
the
speed
value
must
in
the
range
of 2940
-
3090Hz
and
the
W&F
value
is
0.2%.
(4)
Lift
the
tonearm
to
play
the
track
for
45rpm
of
the
test
record.
(5)
Insert
your
screwdriver
into
the
H
hole
(45rpm)
of
the
motor,
adjust
the
VR
to
get
the
speed
value
and
W&F
value,
the
range
of
speed
value
2900
-
3090Hz
and
W&F
value
is
0.2%.
(6)
Reset
the
speed
value
and
W&F
value
of
33-1/3rpm
again.
5.2
CHANGE
THE
LINE
VOLTAGE
SELECTOR
(for
RDXCN1
type)
The
line
voltage
selector
switch
is
located
on
the
top
of
the
cabinet
of
this
turntable.
2
2
2
2
0
0
II
0
BOTTOM
VIEW
0
00