Pioneer pl-530 Service Manual page 43

11.4 AUTO RETURN STARTING POINT
r Stopper Pin Position Adjustment
1. With power ON, set for play mode.
2. In this mode, disconnect power cord from AC
output.
3. Move tonearm once to center shaft, then return
it to the arm rest.
4. Gently tum the platter in its reverse direction
(1 turn).
5. Gently raise the platter. So that space between
plate H and stopper becomes 1 - 1.5mm,
adjust by moving stopper (Fig. 21-a).
7 Stopper
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F is. 2,t -a
o Auto Retum Detection Position
1. Set mechanism for end of play condition.
2. With cartridge stylus 64mm from center shaft,
so that tip screw of plate F and plate G contact,
adjust tip screw (fig. 21-b).
1 1 .5 DE F E C T IV E T O N E A R M O P E R A T IO N
l-. Measure plate D torque during auto retum and
lead-in operations.
2. Measuring position is 40mm from plate D
center (rotation shaft). Turn adjusting nut so
that torque at this time becomes 40 to 609.
Fis.22-a
Fi q .2 2- b
11.6 SHORTING SWITCH ADJUSTMENT
So tbat switch spacing during record playing
becomes 0.5mm, adjust with switch mounting
scew (Fig. 23).
Plate H
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