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PD-6010
Oscilloscope
Check items/
Position
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Adjustment
Adjustment procedure
Vv
H
P
posit
specifications
TRACKING OFFSET AND FOCUS OFFSET ADJUSTMENTS
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Set the player to test mode (see page 53)
VR2
e
Adjust the voltage at TP1 pin 9 TR.RT
(tracking return)
(TR. OF)
to OV +10mV by turning the VR2 TR.OF
(tracking off-
set) control.
VR6
Adjust the voltage at TP1
pin 3 FO.ER
(focus error) to
{FO.OF )
OV
+10mV
by turning the VR6
FO.OF
(focus offset)
control.
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L
LD (LASER DIODE) POWER CHECK
Set to normal
mode.
(Normal
mode can be set by switch-
ing the power off and on again.)
Position
the optical power
meter sensor
immediately
a-
bove the object lens.
Press the PLAY
key without a disc loaded, and check that
the LD
(laser diode) power reading in the optical power
meter is within the specified rating range (0.26mW +0.02
Specified rating
mW).
(0.26mW + 0.02mW)
FOCUS LOCK AND SPINDLE LOCK CHECKS
Load the test disc.
Set the player to test mode (see page 53)
Press the MANUAL
SEARCH
FWD
key (D>)
to move
the pick-up
to about
the center of the disc. Note that
step must be executed.
Vv
H
TP2
RF output
Observe
TP2
pin 4 RF
(RF output) by oscilloscope to
0.5V/div | 100msec|
pin 4
generated
check
that an
RF
output
signal is generated when
the
/div
(RF
TRACK FWD key (C4) is pressed.
output)
Normal rotation
Press the PLAY key ( [> ) and check that the disc rotates
at normal
speed
(about 300rpm
near the center
of the
disc) in the correct direction (clockwise).
55
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