Pioneer PD-J500T Service Manual page 27

@ Objective
To optimize the focus servo loop gain
Playback does not start or focus actuator noisy
connections
@ Player state Test mode, play
[Settings] @ Adjustment location
VR152 (FCS GAN)
CH1 CH2
20 mV/division 5 mV/division
X-Y mode
@ Disc YEDS-7
[Procedure]
(FCS IN)
4 PIN
(GND)
6 PIN
(FCS ERR)
Figure 6
Focus Gain Adjustment
Higher gain
Optimum gain Lower gain
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