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Set the pitch control knob to “0” (center position).
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Pull out the connector CN102 of drive P.C.B.
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Connect the tester to terminals, 5 and 6 of connector CN102 on the pitch control P.C.B. side.
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Adjust VR302 so that the resistance value of the tester is 2.875±0.25kΩ.
(Fig.2)