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P4PE front case audio conection
Hi guys.
I just stuffed all my P4PE paraphernalia into an Antec Overture desktop case. Looks great in the entertainment unit! I hooked up the front audio hookups, and the first time I plugged in a set of headphones, the system shut down. After restarting, everything seems fine (?). Will it do this intermittingly or was the P4PE just reconfiguring itself. |
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In article 29gkb.121260$9l5.115351@pd7tw2no, "Jim in Canada"
wrote: Hi guys. I just stuffed all my P4PE paraphernalia into an Antec Overture desktop case. Looks great in the entertainment unit! I hooked up the front audio hookups, and the first time I plugged in a set of headphones, the system shut down. After restarting, everything seems fine (?). Will it do this intermittingly or was the P4PE just reconfiguring itself. That doesn't sound good. Perhaps something is getting shorted ? The only dangerous pin is the filtered +5VA on the 2x5 connector. But it is hard to see a mechanism where the headphone jack could do anything to the system. If there was going to be trouble, the trouble should appear even before the headphone plug is inserted. Even if the 2x5 was rotated, that would only result in +5VA going to the reserved (and unused) headphone amplifier control pin called HP_ON. http://www.formfactors.org/developer..._guideline.pdf (pg.19) While the AD1980 has some jack sensing functions, I doubt they are intended to cause the system to reboot. Check the Event Log and see if there is an error recorded against an audio driver, in which case your theory is correct, but only because a bug in the audio driver is causing the reboot. If it is an audio driver issue, you should be able to reproduce the symptoms, by putting the two jumpers back on the FP_AUDIO header, and then do the headphone test using the audio connector on the back of your case. If the system reboots, that would lend credit to a jack sense/audio driver issue. I would say you have some serious ohmmeter work to do. The case manufacturers strike again :-( Paul |
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