Aiwa carrousel out of alignment / sync

Definately NOT a slipped tooth but rather a dirty sensor under the tray and/or a faulty ribbon flex cable that connects the drawer to the main pcb. electricitym

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Both wrong - there's a service bulletin on this. A 1K resistor added to the circuit, across an emitter - base junction on the cd main board as I recall.

Mark Z.

Hi Mark, Can you please elaborate more on this service bulletin. I have the same issue. If you can provide more info on which transistor you are talking about, it will be helpful. Thanks!

This has some more details about the resistor, R406, that needs to be changed.

Good luck.

ray

in

Thanks! Problem fixed :) Replaced with 680 ohms. It took me lot longer than it should have as R406 and a bunch of other smd components were populated upside down on the board. I kept on assuming those were caps (as they looke d white with no marking). Resistor numbers weren't marked on the silk scree n on solder side either. Service manual came to the rescue .. Looks like th is changes the time constant for active braking. The motor probably behaves differently as time goes by and causes the issue.

Thanks SK

Thanks! Problem fixed :) Replaced with 680 ohms. It took me lot longer than it should have as R406 and a bunch of other smd components were populated upside down on the board. I kept on assuming those were caps (as they looked white with no marking). Resistor numbers weren't marked on the silk screen on solder side either. Service manual came to the rescue .. Looks like this changes the time constant for active braking. The motor probably behaves differently as time goes by and causes the issue.

Thanks SK

You're welcome but Mark Z deserves the credit for originally advising us with the correct solution to the problem.