Pioneer XR-P640M, XR-P340M XR-P740M, XR-P64M, XR-PS4M xR-P74, XR-P64trJ,XR-P340, Cm disc

XR-P740M, XR-P64()M, XR-PS4()M xR-P74(), XR-P64trJ_,XR-P340

I	Pictup Radial/Tangential Tilt Adjustment (For GD Single)
o	Objective	To adjust the angle of the pickup relative to the disc so that the laser beams are shone straight
		down into the disc for the best read out of the RF signals.

oSymptom when out Sound broken; some discs can be played but not others. of adjustment

Measurement	Connect the oscilloscopeto	O Player State	Test mode, play
Instrument	TP1, Pinl (RF).
Connections		o Adjustment Location	Pickup radial tilt adjustment screw
	[Settings] 2OmV division		and tangential tilt adjustment
	20Ons7ldivision		screw
	AC mode
		o Disc	8 cm disc
			[Hewever, those with approx. 20
			min of audio signal (music).1

lProcedurel

l.PresstheMANUAL/TRACKSEARCHFwD>>.>>!keyorREV[<<.<<￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿

external circumference of the disc.

Pressthe DOLBY NR key, thePLAY /PAUSE >/alkey twice in that order to closethe respectiveservosand put the player into play mode.

2.First, adjust the radial tilt adjustment screw with the hexagonwrench (GGK1002)so that the eye pattern (the diamond shapeat the center of the RF signal) can be seen the most clearly.

3.Next, adjust the tangential tilt adjustment screw with the hexagon wrench (GGK1002)so that the eye pattern (the diamond shapeat the center of the RF signal) can be seen the most clearly (Fig. 3).

X The ball-point type hexagonal wrench is used becausethe disc will get in the way if a normal hexagonalwrench is

used.

4.Adjust the radial tilt adjustment screw and the tangential tilt adjustment screw again so that the eye pattern can be seen the most clearly. As necessary,adjust the two screws alternately so that the eye pattern can be seenthe most clearly.

5.When the adjustment is completed, lock the radial and tangential adjustment screw.

Note: Radial and tangential mean the directions relative to the disc shown in Fig. 2.

direction

Radialdirection

Tangential

direction

Tangentialdirection

J " o 3

Disc

Fig . 2

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