Aiwa carrousel out of alignment / sync

Guest
My Aiwa NSX-V8000 wouldn't play a CD. I discovered that the carrousel
was not placing the CD in the right location. When the carrousel turns
and places the CD in position to start spinning I have to give the CD a
little nudge to the right at which time it does start to spin and then
begins playing. At this time you can see that the carrousel should have
rotated about 1 more gear tooth in its travel.

I am assuming that it slipped a tooth (if this is possible), and the
problem can be fixed by jumping a tooth forward or backward, which ever
the case requires.

Question...Do I need to fear starting a little disassemby job to
correct this or is it a pretty simple proceedure if I am careful?
 
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
----------------------------
 
On Sunday, October 30, 2005 4:22:15 AM UTC-7, Mark D. Zacharias wrote:
electricitym@yahoo.com> wrote in message
news:1130642608.685483.286560@f14g2000cwb.googlegroups.com...
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
----------------------------


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!
 
"Parkashan" <sushant.eltrx@gmail.com> wrote in message
news:c9e17cac-ae1c-4408-887d-d4e82d14d297@googlegroups.com...
On Sunday, October 30, 2005 4:22:15 AM UTC-7, Mark D. Zacharias wrote:
electricitym@yahoo.com> wrote in message
news:1130642608.685483.286560@f14g2000cwb.googlegroups.com...
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
----------------------------


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.
https://groups.google.com/forum/#!search/aiwa$20r406/sci.electronics.repair/Ptw7N_V2Xn0/HjHP-9091EIJ

Good luck.
--
David Farber
Los Osos, CA
 
On Sunday, April 6, 2014 10:07:24 AM UTC-7, David Farber wrote:
"Parkashan" <sushant.eltrx@gmail.com> wrote in message

news:c9e17cac-ae1c-4408-887d-d4e82d14d297@googlegroups.com...

On Sunday, October 30, 2005 4:22:15 AM UTC-7, Mark D. Zacharias wrote:

electricitym@yahoo.com> wrote in message

news:1130642608.685483.286560@f14g2000cwb.googlegroups.com...

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

----------------------------





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.

https://groups.google.com/forum/#!search/aiwa$20r406/sci.electronics.repair/Ptw7N_V2Xn0/HjHP-9091EIJ



Good luck.

--

David Farber

Los Osos, CA

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
 
"Parkashan" <sushant.eltrx@gmail.com> wrote in message
news:ce3c0272-5031-45a7-a2d7-2f01dd3f1595@googlegroups.com...
On Sunday, April 6, 2014 10:07:24 AM UTC-7, David Farber wrote:
"Parkashan" <sushant.eltrx@gmail.com> wrote in message

news:c9e17cac-ae1c-4408-887d-d4e82d14d297@googlegroups.com...

On Sunday, October 30, 2005 4:22:15 AM UTC-7, Mark D. Zacharias wrote:

electricitym@yahoo.com> wrote in message

news:1130642608.685483.286560@f14g2000cwb.googlegroups.com...

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

----------------------------





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.

https://groups.google.com/forum/#!search/aiwa$20r406/sci.electronics.repair/Ptw7N_V2Xn0/HjHP-9091EIJ



Good luck.

--

David Farber

Los Osos, CA

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.

--
David Farber
Los Osos, CA
 

Welcome to EDABoard.com

Sponsor

Back
Top