Friday, 13 November 2015

XPERIA E3: MainBoard under the shields & some info



Hello everyone!

Recently I have to remove a lot of oxydation from the mainboard of an Xperia E3 (D2203).
In that occasion I removed shields and take some pictures.
Here are the pictures with all the writes and numbers I can read on the chips and components.
May be some, the very little ones, are not correct.
imgur.com/a/s9O0P
[Sorry, this is my first post, I cannot add direct link...]

The battery used for Xperia E3 is the same used for Xperia Z: same capacity, same size, same connector, same flex cable.

Schematics for this phone are not available (Sony don't give schematics at all), but Xperia E3 use main chips

MSM8926 - Quad core processor
WTR1625L - RF Transceiver
WCN3620 - BT & WIFI
WCD9302 - AUDIO CODEC
PM8926 - Power management IC

used by other phones. LG-D620 is one.
Search for LG-D620 service manual/guide (LG-D620_SVC_ENG_140407.pdf)
and there you can find a lot of information, figure out how can be Xperia E3 schematics, pinout of main chips, diagram of working functions, logic connection between modules and so on.
Cheers
M.A.



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