Sony DVP S530D User Manual download pdf (Page 37)

Incline Gear

Sled Sensor

No Power Tray Removal – From the Top

1. Remove the two screws and the mechanism’s top cover to expose

the tray and laser platform.

2. Locate the top pawl under the tray by inserting a small screwdriver

between the platform and tray. The pawl is just in front of the spindle

motor.

3. Slide the pawl to the right to lower the platform and free the tray.

4. Remove the tray.

Tilt Motor

Purpose

Maximum RF output level occurs when the laser beam is perpendicular to

the disc’s information layer. The tilt motor raises one end of the laser

platform so its beam is perpendicular to the disc.

Access and Operation

The tilt motor is a stepping motor located next to the incline gear. At

power OFF, the incline gear lowers one end of the laser platform. At

power ON, the incline gear raises the platform to full height.

The stepping motor then increments the incline gear to the middle posi-

tion. This position is stored in EEProm IC201 and updated during the test

mode automatic adjustments. During DVD playback, if the RF level fluc-

tuates, the tilt motor rotates until the RF level stabilizes. The incline gear

remains at the middle position during CD playback.

Sled Position

The sled motor moves the laser assembly away from home position at

the spindle motor. The laser assembly‘s home position is marked as it

blocks the light to a photo detector sensor. This picture shows the photo-

sensor location under the sled motor shaft.

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Sony DVP S530D User Manual Page 37