Analog_wired_Headset_Sony_Ericsson.mw

The pinout of some Headsets delivered by Sony Ericsson are known to use a different pin layout.
The layout of the HPB-20 is as following (unconfirmed, measuring the pins shows some strange interconections):
* 1/Tip: Mic
* 2: right speaker
* 3: left speaker
* 4/Base: ground

This pinout is not compatible to Neo. To use this headsets you have to rewire them which requires soldering or usage of a simple adater doing the transformation (however, i currently do not know of any existing).

==HPB-20==
[[Image:Sony Ericsson headset delivered with P910i, closed.jpg|150px]]
[[image:Sony Ericsson headset delivered with P910i, soldered to neo layout.jpg|200px]]


The following sections describe the modifications made to a headset originally delivered with a P910i (HPB-20).

The modification can be made with the following steps (take care to have a quick but steady hand, the soldering on the image is quite dirty because i had to solder several times):
* unsolder the white cable from the M+ solder contact
* unsolder the two combined green cables from the LS solder contact
* untwist the two green cables so they get separated
* twist the white cable together with the green one from the small grey cable (coming from left speaker)
* solder the white/green cable pair to the LS solder contact
* solder the green cable from the big grey cable to the solder contact M+
* test if everything works now, close the casing if and enjoy stereo sound :)

The mic should work, but this was not tested so far.

[[Category:Headsets]]