Re: Nokia 6500 Classic stereo headphones adapter problem

On 23 May, 10:34, schn...@xxxxxxxxxxxxxx wrote:
On 22 May, 22:27, Franc Zabkar <fzab...@xxxxxxxxxxxxxxxxx> wrote:



On Wed, 21 May 2008 08:15:15 -0700 (PDT), schn...@xxxxxxxxxxxxxx put
finger to keyboard and composed:

On 21 May, 12:59, "Dave Plowman (News)" <d...@xxxxxxxxxxxxxxx> wrote:
In article
<e4fe7d1b-3c7c-4d68-9a57-181035277...@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
<schn...@xxxxxxxxxxxxxx> wrote:

I have aNokia6500Classicmobile/cellular phone. It has a mini USB
connector to plug in both the charger or accessories such as a stereo
headset. The suppliedNokiaheadset works fine, but is simply not a
very good design.
I tried eBay for several different third party connectors and have now
tried four, including eventuallyNokia'sown AD-55 mini USB adapter
and none of them work. When you plug headphones into them, they all
say "Connected device takes too much power - please disconnect".

Only guessing, but USB spec doesn't include analogue signals - just digits
and DC. So again I'd guess theNokiaunit includes electronics.

--
*Cover me. I'm changing lanes.

Dave Plowman d...@xxxxxxxxxxxxxxx London SW
To e-mail, change noise into sound.

You're right Dave - theNokiaunit which works does include
electronics. There's a microphone piece as well as a dial to change
volume, and a button to advance track number.

Does this document..

http://sw.nokia.com/id/596e3800-879f-4ae4-a599-8bbbef14f2d4/Series_40...

..clarify for your whether any mini-USB attachment with a 3.5mm stereo
adapter would require some electronics in-between to convert a digital
to analogue signal? That's assuming I've understood what you suggest
the problem might be.

You may be able to find your cable pinouts here:http://pinouts.ru/connector/4_pin_USB_A_or_USB_B_plug_connector.shtml...

To convince yourself that your adapter is a digital device, you could
connect it to your PC with an appropriate cable and then use
Microsoft's UVCView.exe or usbview.exe to display the device
characteristics. I'm assuming that your adapter would not be a host.
If it is a host, then the above won't work.

I'm using Windows 98SE. In Control Panel's Device Manager, under the
Power properties for the USB Root Hub, I see that my USB flash drive
reports that it requires 100mA max current. I'm not sure, but I
suspect that Win XP may be able to report the actual current draw.

UVCView and Usbview both report that my USB phone is bus powered and
requires 200mA MaxPower. These utilities may also be able to tell you
who is the real manufacturer of your devices.

If you can't find the above utilities, contact me via email.

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.- Hide quoted text -

- Show quoted text -

Thanks Franc - this looks helpful. I'll try it tonight and will
report my findings back here.

As an aside, I'm fairly sure from what I've read onNokia
documentation that theNokia6500Classiccan do both a host and non-
host mode. That might not be important, but I've mentioned it just in
case.

Okay, well here are what the two programs reported. Does this give
any indication to a solution?

http://img155.imageshack.us/img155/5928/nokia6500classicuvcviewcz9.jpg
http://img267.imageshack.us/img267/5749/nokia6500classicusbviewdg7.jpg

All help or suggestions gratefully appreciated,

schnide
.

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