Sharp MD X5 Service Manual download pdf (Page 74)

MD-X5H/CP-X5H

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• Disc loading is not normal.

Is disc loaded when it is inserted?

Yes

Check IC1401.

Check CNP1601 and SW1956.

Yes

Check CNP1604 and IC1601.

Yes

Check CNP1604 and CN1604

Yes

Is change observed on the pin 23 or 24 of IC1601?

Is change observed on the pin 30 or 31 of IC1601?

Is ejection performed when the MD taking-out button is

pressed?

Yes

Disc retracts soon after completion of disc ejection.

Yes

Check CNP1601 and SW1956.

Is the pin 4 of CNP1601 set to L state?

• 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".

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?

Only the low reflection disc cannot be played back.

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".

Check SW1951A/B, mechanism switch PWB, and CNP1601.

Yes

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Sharp MD X5 Service Manual Page 74