Pioneer PD-J500T Service Manual page 18

__ PD-J500T_
8. ADJUSTMENTS
1. Adjustment Methods
1-1 Adjustment items/verification items and order
= Focus offset adjustment TP1, Pin 6 (FCS. ERR) VR103 (FCS. OFS)
Grating adjustment TP1, Pin 2 (TRK. ERR) Grating adjustment slit
Tracking error balance adjustment TP1, Pin 2 (TRK. ERR) VR102 (TRK. BAL)
Pickup radial/ Radial tilt adjustment screw, Tangential
| os | RF level adjustment TP1, Pin 1 (RF) VRi (RF level)
TP1, Pin 5 (FCS. IN)
TP1, Pin 6 (FCS. ERR)
: eer TP1, Pin 3 (TRK. IN)
Tracking servo loop gain adjustment TP1, Pin 2 (TRK. ERR) VR151 (TRK. GAN)
ee Focus error signal verification TP1, Pin 6 (FCS, ERR) L———-
@ 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
Focus servo loop gain adjustment VR152 (FCS, GAN)
1-2 Measuring instruments and tools
Dual trace oscilloscope (10:1 probe)
Low-frequency oscillator
Test disc (YEDS-7)
12-cm disc (with at least about 70 minutes of recording)
Low-pass filter (39 kQ + 0.001 uF)
Resistor (100 kQ )
Hex. wrench (L-Shaped type, size: 1.5mm)
Standard tools
9: SED A Re Noe
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