JVC XV523DG
Service Manual

XV-521BK/523GD/525BK/421BK

Main adjustment
Adjustment and confirmation matter (1) Auto adjustment method
If microprocessor (IC401, IC402, IC791, IC403) or Pick-up is replaced, initialize the DVD player in the following matter: 1. Initialize the DVD player in the following matter: 1) Make sure that no disc is on the tray. 2)Insert the power pulag to the outret while pressing "PLAY" and "OPEN/CLOSE" button at the same time. FL Display indicate "TEST "( ;Version. ;Region code) 3)Press 3D-PHONIC button. And EEPROM initialize start. 4)When indicate "V.REPLACE" on the display , initialize finished. The test mode is cancelled when the power is turned off.

(2)Flap adjustment of the Pick-up guide shaft
1) Make sure that no disc is on the tray. 2)Insert the power pulag to the outret while pressing "PLAY" and "OPEN/CLOSE" button at the same time. FL Display indicate "TEST " ( ;Version. ;Region code) 3)Press the "OPEN/CLOSE" button to move the tray outward. Put the Test Disc (VT-501)on the tray and press "OPEN/CLOSE" button. The tray should move inward (Note:Don't push to close the tray directly by hand etc. 4)Press the "PLAY" button. 5)The laser current and the jitter value is displayed on the FL indicator as follows.

3 9 0 0 Laser current value FL indicator

4

d 0 Jitter value

0

6)Set the Jitter value of FL indicator to minimum by adjusting the pick-up guide shaft flap. The test mode is cancelled when the power is turned off.

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