IO warrior is not recognized

[VoteHillary]

Hi,

I just finished my new IO warrior 40. If I plug it, it does not show up under the usb list (in about this mac-> more info). If I play a demo it says that no IO warrior available.

If I use the USB prober I get the following errors after plugging the IO warrior:

522.989 [1] AppleUSBOHCI[0x1654000]::MakeDevice error setting address. err=0xe00002ed device=0x21e7400 - releasing device
523.433 [1] AppleUSBOHCI[0x1654000]::MakeDevice error setting address. err=0xe00002ed device=0x21e7400 - releasing device
523.877 [1] AppleUSBOHCI[0x1654000]::MakeDevice error setting address. err=0xe00002ed device=0x21e7400 - releasing device
524.322 [1] AppleUSBOHCI[0x1654000]::MakeDevice error setting address. err=0xe00002ed device=0x21e7400 - releasing device


What must I do? A visual check, to me the solder seems fine, what can it be?

Thanks for helping me!

Wouter

[Guido Körber]

When it does not show up as a device none of the samples can work.

It looks like the Mac detectes that there is a new device plugged in but the device is not working. This can have a number of reasons.

Check if there are any short circuits on the USB lines and the power supply. Make sure the IO-Warrior does get supply voltage.

[VoteHillary]

Hi,

Sorry for the slow response. I needed to get a multimeter. I am a newby so sorry for any stupid questions or remarks.

I checked the voltage both on the USB port (on the plug) and on the chip. Both indicated a 4, 38 volt. This seems ok to me, is it?

If the voltage is both at the beginning of the circuit and on the chip this value there is no shortcut (or am i thinking the wrong way?).

Anyhow, still havent found the error. What should I do next?

Many thanks!

Wouter

[Guido Körber]

Check if there is a short between the USB lines or if the pins of the oscillator have a short.

[VoteHillary]

the usb lines gives a voltage of 2.9 volts
the oscillator gives about 0.01 volts

[Guido Körber]

Checking the voltages does not tell the whole story. However the voltage at the oscillator does not sound good.

[VoteHillary]

ok,

what to do now, what should I also measure to get the full story?

what should the oscillator indicate? Does this mean there is something wrong with the chip (that i cannot fix) or could it be in the 'wiring' somewere (that i can fix)?

thanks,

Wouter

[Guido Körber]

Check for short circuits.

The voltage at the aoscialltor does not really tell a lot. It should be significantly higher than 0V though. But to have a useful test there you would need an oscilloscope.

[VoteHillary]

I checked all connections for short circuits using the resistance meter, but I can not find any shorts.

(however, I am a newby so maybe i have done something wrong)

What remains to try?

Thanks,

Wouter

[Guido Körber]

Can you send the board in so we can check it here?

[VoteHillary]

yes, I will do so,

many thanks in advance!

Wouter