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SL-P200
SS) i 4 018)
Mi MEASUREMENTS AND ADJUSTMENTS
Caution:
@ It is very dangerous to look at or touch the laser beam.
(Laser radiation is invisible.)
With the unit turned "on", laser radiation is emitted from the pickup lens.
Avoid exposure to the laser beam, especially when performing adjustments.
PLAYER SETTING
1. Remove the cabinet. (Refer to page 7.)
2. Remove
the disc clamper
and
magnet.
(Refer to
page 7.)
3. Remove
the
disc
holder
and
power
switch
rod.
(Refer to page 7.)
¢ Setting of the test disc (Shown at the right figure.)
1. Place the test disc and magnet.
2. Turn
"ON"
the power
switch
of the player, while
holding
the
levers
of the
switches
(S101,
S102)
in the direction of the arrow.
3. Release
the levers of the switches
(S101, $102)
after the test disc starts rotating.
ADJUSTMENT POINTS
e Servo P.C.B.
yy
Z|
ee
rae!
oh
(Focus
offset adj.)
Vaiog
VR501] (PLL adj.)
(Tracking
VR102!
(Tracking gain adj.)
balance adj.)
[vR101] (Best eye adj.)
Main P.C.B.
LINE OUT
l
PLL adjustment test point
D158 (+12V)
+"
Connect the red lead
p21
_ of servo gain ajuster.
© (~12V)
Connect the blue lead
wire of servo gain adjuster.
e Filter for turntable height adjustment
Resistor: 10kQ
(ERDS2TJ 103)
To oscilloscope (+)
Capacitor: 0.1pF
Measuring Instruments and Special Tools
@ Servo gain adjuster (SZZ2P1017F)
e@ Test discs
Test disc (SZZP1014F) old or new type
Inspection test disc (SZZP1054C)
Uneven disc (SZZP1056C)
Black band disc (SZZP1057C)
Adjustment Procedure
Step 1:Make the temporary setting of
each VR.
(Refer to page 13.)
Step 2:Best eye ( PD balance ) adjustment.
(Refer to page 13.)
Step 3:Connect the servo gain adjuster.
(Refer to page 12.)
Step 4:Focus gain adjustment.
(Refer to page 13.)
Step 5:Tracking gain adjustment.
(Refer to page 13.)
Step 6:Focus offset adjustment
(Refer to page 14.)
Connection of Servo Gain Adjuster
Low-frequency oscillator
©OOO
Servo gain adjuster
@ Ordinary disc
@ Two-channel oscilloscope (with trigger)
of 30MHz or over
@Low frequency oscillator
@ Conversion connector(SZZP1032F)
Step 7:Tracking offset adjustment.
(Refer to page 14.)
Step 8:Tracking offset balance
adjustment.(Refer to page 14.)
Step 9:Disconnect the servo gain
adjuster.
Step 10:PLL adjustment.
(Refer to page 15.)
Step 11: Check of play operation after
adjustment.
(Refer to page 15.)
(SZZP1017F)
GND OSC
Oscillator connection terminals
@ ON/OFF switch
@
C2
ON
.
GND ©
Selector
©) ;
osc @
aoe
3
Oscilloscope
Oscilloscope connection
wn)
O_O
terminals
we}
©
OO}
Tp2 TP3 TPI
CHI ft? f ¢
G
—12V
GND
+12V
(Main) (Chassis) (Main)
Conversion connector
{SZZP1032F)
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