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Pp-xSs4a0mM
Setting
Jest
Edjusting
Adjustment
Adjustment
procedure
T
Points
Points
Pas
Vv
H
specifications
1 | TRACKING
OFFSET,
FOCUS
OFFSET
AND
RF
OFFSET
ADJUSTMENT
T
|
e Set to TEST mode.
(See page 34.)
VR5
45°
¢ Turn
VRS
TRK.BAL
{Tracking
balance)
volume
(TRK.BAL)
clockwise 45° from the center.
TP1
VR7
OV+50 mv
* Adjust with VR7 TRK OFS (Tracking offset) volume
PIN
2
(TRK.OFS)
so that the voltage of pin 2 TRK.ERR
(Tracking error)
(TRK.ERR)
of TP1 becomes OV+50 mV.
TPI
VRE
FOCUS
offset
* Adjust
VR6
FCS.OFS
(focus
offset}
so
that
the
PIN 6
(FCS. OFS)
OV+50 mV
FCS. ERR (focus error) voltage at TP1
pin 6 becomes
(FCS.ERR}
OV+50
mv.
TP1
VR2
RF offset
e Adjust VR2 RF.OFS (RF offset) so that the RF output
PIN 1
(RF.OFS)
100 mV+50 mv
voltage at TP1t
PIN 1 becomes
100 mV+50 mV.
(RF
OUTPUT)
2 [RF LEVEL
ADJUSTMENT
ia
e Set to TEST
mode.
(See page 34.)
TP
* Play TEST disc and connect probe of an oscilloscope
Pin 1
to pin 1 RF (RF output) of TP1 and measure the P-P
(RF)
voltage
of RF waveform.
VRI
1.5Vp-pt02 y
¢ Adjust VR1
(laser power) so that the value is within
Laser power
-0
1.5Vp-pt02.y,
| 3 | LD (LASER DIODE) OUTPUT POWER CONFIRMATION
e@Set to TEST mode. (See page 34.)
e@ Press TRACK
FWD key (C1) and turn ON LD (laser
diode).
'
y
Place
sensor
of the taser power
meter
immediately
Santmetan:
bove
the object
lens and
confirm
that
the output
above
c
confi
less than 0.13 mW
}
P
power of the LD is less than 0.13 mW.
L
FOCUS
LOCK
AND
SPINDLE
LOCK
CONFIRMATION
RF
output
exists
TP1
Normal
rotation
0.5V/div
| 100
Pin 1
msec/div
|(RF output)
36
Set
TEST
disc.
Set to TEST
mode.
(See page 34.)
Shift the pickup close to the center
of the disc by
pressing
the
MANUAL:
SEARCH
FWD
key (pe).
*
Note
that
this
step
must
be
performed.
¢ Observe
pin
1
RF
(RF
output)
of TP1
with
an
oscilloscope
and
confirm
that
the
RF
signal
is
output
after pressing
the TRACK
FWD
key (pty).
rotates
in normal
direction
at almost
the specified
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