SONY MDPV90K
Instrukcja Serwisowa

6 Loosen three screws on the spindle motor.

Loosen the screw about a turn from the state of being tight.

Feed base block assembly

Insert a eccentric screwdriver to either one of the hole for adjustment.

Chucking ring

Jig terminal Mode Oscilloscope Phase difference
Hole Hole

: E, F : TRACKING, SLED OFF : X/Y Lissajous's range (Each 20 mV/div.) : 1 : 3 or more 1

Before adjustment

Fig. 7-4. 7 Again, plate the CD (YEDS-18) in the playback status. 8 Connect the oscilloscope to the terminals E and F of MD adjustment cable, and turn off the SLED and TRACKING switches. 9 Insert a eccentric screwdriver into the feed base block assembly for RD adjustment. !º After adjustment, turn on the SLED and TRACKING switches. !¡ Remove the CD (YEDS-18), and tighten three screws on the spindle motor, then three screws on the feed base block assembly.
After adjustment

3 or more

Make the figure straight. 1

3 or more

Fig. 7-5.

7-3