SONY MDSNT1
Service Manual

MDS-NT1

4-6.

AUTOMATIC SELF-DIAGNOSIS FUNCTION

This test mode performs CREC and CPLAY automatically for mainly checking the characteristics of the optical pick-up. To perform this test mode, the laser power must first be checked. Perform AUTO CHECK after the laser power check and Iop check. Procedure: 1. Click the [ENTER/YES]. If �LDPWR � is displayed, it means that the laser power check has not been performed. In this case, perform the laser power check and Iop compare, and then repeat from step 1. 2. If a disc is in the mechanical deck, it will be ejected forcibly. �DISC IN� will be displayed in this case. Load a test disc (MDW-74/GA-1) which can be recorded. 3. If a disk is loaded at step 2, the check will start automatically. 4. When �XX CHECK� is displayed, the item corresponding to XX will be performed. When �06 CHECK� completes, the disc loaded at step 2 will be ejected. �DISC IN� will be displayed. Load the check disc (MD) TDYS-1. 5. When the disc is loaded in step 4, the check will automatically be resumed from �07 CHECK�. 6. After completing to test item 12, check OK or NG will be displayed. If all items are OK, �CHECK ALL OK� will be displayed. If any item is NG, it will be displayed as �NG:xxxx�. When �CHECK ALL OK� is displayed, it means that the optical pick-up is normal. Check the operations of the other spindle motor, thread motor, etc. When displayed as �NG:xxxx�, it means that the optical pick-up is faulty. In this case, replace the optical pick-up.

4-7.

INFORMATION

Display the software version. Procedure: 1. If displayed as �INFORMATION�, click the [ENTER/YES]. 2. The software version will be displayed. 3. Click the [MENU/NO] to end this mode.

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