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6.2 ADJUSTMENT TABLE
a
Ajustment name
Adjustment point
Measuring equipment and jigs
Measurement point
Player condition
Tilt Offset
Check and Adjustment
Coarse centering
adjustment
FCS balance adjustment
(1) TRK ERR MAX
FCS balance adjustment
(2) RF MAX
Tangential direction angle
adjustment
Fine centering adjustment
Crosstalk check and Tilt
offset adjustment
FCS Servo loop gain
adjustment
Tilt base
Centering adjustment
screw
Tilt base
TAN adjustment screw
Tilt base
Centering adjustment
screw
TV monitor
* Oscilloscope
* STD-901 or STD~902
© MIX resistor
10K
10K
* Oscilloscope
¢ STD-901 or STD-902
* Oscilloscope
* STD-901 or STD-902
* Oscilloscope
* STD-901 or STD-902
* Oscilloscope
° STD-901 or STD-902
© MIX resistor
10K
10K
¢ TV monitor
* GGV1003
© Oscilloscope
* GGV1003
Tilt indication on Test
mode screen
CN106
x: © Pin (TERR)
Y: OD + @ Pin (TRK SUM)
CN106
© Pin (TERR)
CN106
@ Pin (RF)
CN106
@ Pin (RF)
CN106
x: © Pin (TERR)
Y: D + @ Pin (TRK SUM)
Crosstalk check screen
CN106
X: No connection
Y: © Pin (FERR)}
« Power ON
* Test mode
* Disc not installed
* Test mode
TRK Servo Open
Tilt servo ON
* Innermost track of STD-901 or
STD-902 which does not come in
contact with the mechanical
stopper.
* Test mode
TRK Servo Open
Tilt servo ON
inner track of STD-901 or
STD-902
° Test mode
TRK Servo Close
Tilt servo ON
¢ Inner track of
© Test mode
TRK Servo Close
Tilt servo ON
* Inner track of STD-901 or
STD-902
* Test mode
TRK Servo Open
Tilt servo ON
* Innermost track of STD-901 or
STD-902 which does not come in
contact with the mechanical
stopper.
* Test mode
TRK Servo Close
Tilt servo ON
* GGV1003
#115 STILL
When
the crosstalk is still noticeable in spite of the adjustment in (7), use a hexagonal wrench driver (straight type, size:
3 mm) to
adjust the TAN adjustment screw on the bottom side of the player through the GGV1003
# 115 STILL screen. Afterwards, perform the
adjustment
procedures from (6).
* Power ON
* Test mode
« GGV1003
Disc mounted state
Adjustment procedure
1. Check if the tilt indication on the Test mode screen is at T-6 to T-8.
2. If the tilt indication is not at T-6 to T-8, adjust VR607 until the tilt
indication reaches T-6 to T-8.
1. Move the slider until it does not come in contact with the mechanical
stopper at the slider position indication S-IN.
2. Observe TERR (Xch) and TRK SUM (Ych) at the X-Y mode during
TRK Servo Open.
3. Tum the centering adjustment screw until the Lissajous' figure is
horizontal.
1. Observe TERR at CH1 of the oscilloscope during TRK Servo Open.
2. Adjust VR605 until the amplitude of the waveform reaches its maximum.
1. Close the TRK Servo and observe RF at CH1 of the oscilloscope.
2. Adjust VR6O6 unti! the amplitude of the waveform reaches its maximum
and the envelope is very clear.
1. Observe RF at CH1 of the oscilloscope during TRK Servo Close.
2. Adjust the TAN adjustment screw until the amplitude of the waveform
reaches its maximum and the envelope is very clear.
Perform fine centering adjustment by following the same procedure as in
"Coarse centering adjustment" (2}.
1, Search for address 115 of GGV1003 and still the address.
2. Check the crosstalk. If the crosstalk is pronounced, adjust VR607
until the crosstalk is not noticeable.
1. Short CN106 pin No. 7 (F IN) with CN106 pin No. 8 (GND).
2. Press the play { p) key to make a focus sweep.
3. Press the step reverse key (dj!) to set the focus balance to F-1.
4. Observe FERR output at Ych on the oscilloscope.
5. Adjust VR604 so that the amplitude of FERR output is 2.6V+0.1V.
CLD-S360, CLD-S260
Waveform and connection diagram
TRK OFF
Adjust VR607 while looking at the figure
on the Test mode screen.
X:
200mV/aiv
Y¥:
SOmV/div
AC mode
LIK
io
v.
SOmv/div
H:
10msec/div
DC mode
CN106
TERR
Adjust until the amplitude
reaches its maximum.
Vi
20mV/div
H:
Ipsec/div
Ac mode
Adjust until the ampitude reaches its maximum
and the envelope is very clear.
xX; 200mV/aw
Y:
SOmv/div
AC mode
LIKI
io)
Adjust until the Lissajous' figure 1s honontaal.
It the crosstalk is pronounced.
adjust until the crosstalk 1s not noticeable.
Front Panel
90000
K-FF
T-O:N
M-7
TRK OFF
FO
Al the test mode screen,
Set this figure to "1°.
48
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