SHARP MDX60H
Manual de Servicio

MD-X60H
� Disc loading is not normal.
Is disc loaded when it is inserted? No Is the pin 4 of CN1601 set to L state? No Yes Is change observed on the pin 23 or 24 of IC1601? No No Yes Is change observed on the pin 30 or 31 of IC1601? No Yes Check CN1604 and CN1604 Check CN1604 and IC1601. Check IC1401. Check CN1601 and SW1956. Yes

Yes Is ejection performed when the MD taking-out button is pressed? Yes Disc retracts soon after completion of disc ejection. Yes Check CN1601 and SW1956.

No

� Playback state cannot be set.
Is it impossible to set both high reflection disc and low reflection disc to playback state? Check as stated in item "TEST mode check". No

Yes Only the high reflection disc cannot be played back. Yes Is 1.02V±0.3V (high reflection disc) applied to the pin 93 of IC1401 in the TEST mode where the high reflection disc has been inserted? Yes No

No Only the low reflection disc cannot be played back. Yes Is 3.2V±0.3V(record enabied) or 2.06V± 0.3V (record disabled) applied to the IC1401 pin 93 after the low reflection disc has been set?

Yes After adjustment check as stated in item "Normal playback".

No

Check SW1951A/B, mechanism switch PWB, and CN1601.

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