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PD-S601
5.
ADJUSTMENTS
5.1
ADJUSTMENT METHODS
@ Adjustment items/verification items and order
TRIG FS. OF
[Sainte
[ri a
TP1, Pin 2(TRK. ERR)
VR102(TRK. BAL)
Pickup radial/tangential direction tilt
4
Radial tilt adjustment screw,
TP1, Pin i (RF)
sctee
g e
adjustment
Tangential tilt adjustment screw
RF level adjustment
TP}, Pin 1 (RF)
VRI (RF level)
vas
TPI, Pin 5(FCS. IN)
Vv
i
Focus servo loop gain adjustment
TPI, Pin6(FCS. ERR)
R152(FCS. GAN)
.
a h
o h
TP1, Pin3(TRK. IN)
Vv
3
Tracking servo loop gain adjustment
TPI, Pin 2(TRK. ERR)
RISI(TRK. GAN)
@ Abbreviation table
FCS.ERR
:Focus Error
FCS.OFS
:Focus Offset
TRK. ERR
:Tracking Error
TRK. BAL
:Tracking Balance
FCS.GAN_
:Focus Gain
TRK. GAN
:Tracking Gain
FCS.IN
—:Focus In
TRK.IN
— :Tracking In
@ Measuring instruments and tools
1. Dual trace oscilloscope (10:1 probe)
2. Low-frequency oscillator
3. Test disc (YEDS- 7)
4. 12- cm disc (with at least about 70 minutes recording)
5. Low-pass filter (39 kQ + 0.00! 4 F)
6. Resistor (100kQ )
7. Standard tools
27
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