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12 pin SonyEricsson K750i cell phone proprietary of Sony Ericsson C702, C902, C905, F305, G502, G700, G705, G900, K205i, K310i, K220i,K320i, K330, K510i, K530i, K550i, K610i, K630i, K660i, K750i, K770i, K790i, K800i, K810i, K850i, M600i, P1i, P990i, R300, R306, S302, S500i, T303, T650i, T700, W200i, W300i, W350i, W380i, W550i, W580i, W595, W610i, W660i, W700i, W710i, W760i,W800i,W810i W850i,W880i, W890i, W900i, W902, W910i, W950i, W960i, W980, Z250i, Z310i, Z320i, Z530i, Z550i, Z555i, Z610i, Z710i, Z750i, Z770i, Z780i cell phones (new SonyEricsson Fast Port) connector layout
12 pin SonyEricsson K750i cell phone proprietary connector
at the mobile phone
3 pin stereo plug connector layout
3 pin stereo plug connector
Pinout compatibility:
  • Sony Ericsson C702
  • Sony Ericsson C902
  • Sony Ericsson C905
  • Sony Ericsson F305
  • Sony Ericsson G502
  • Sony Ericsson G700
  • Sony Ericsson G705
  • Sony Ericsson G900
  • Sony Ericsson K205i
  • Sony Ericsson K220i
  • Sony Ericsson K310i
  • Sony Ericsson K320i
  • Sony Ericsson K330
  • Sony Ericsson K510i
  • Sony Ericsson K530i
  • Sony Ericsson K550i
  • Sony Ericsson K610i
  • Sony Ericsson K630i
  • Sony Ericsson K660i
  • Sony Ericsson K750i
  • Sony Ericsson K770i
  • Sony Ericsson K790i
  • Sony Ericsson K800i
  • Sony Ericsson K810i
  • Sony Ericsson K850i
  • Sony Ericsson M600i
  • Sony Ericsson P1i
  • Sony Ericsson P990i
  • Sony Ericsson R300
  • Sony Ericsson R306
  • Sony Ericsson S302
  • Sony Ericsson S500i
  • Sony Ericsson T303
  • Sony Ericsson T650i
  • Sony Ericsson T700
  • Sony Ericsson W200i
  • Sony Ericsson W300i
  • Sony Ericsson W350i
  • Sony Ericsson W380i
  • Sony Ericsson W550i
  • Sony Ericsson W580i
  • Sony Ericsson W595
  • Sony Ericsson W610i
  • Sony Ericsson W660i
  • Sony Ericsson W700i
  • Sony Ericsson W710i
  • Sony Ericsson W760i
  • Sony Ericsson W800i
  • Sony Ericsson W810i W850i
  • Sony Ericsson W880i
  • Sony Ericsson W890i
  • Sony Ericsson W900i
  • Sony Ericsson W902
  • Sony Ericsson W910i
  • Sony Ericsson W950i
  • Sony Ericsson W960i
  • Sony Ericsson W980
  • Sony Ericsson Z250i
  • Sony Ericsson Z310i
  • Sony Ericsson Z320i
  • Sony Ericsson Z530i
  • Sony Ericsson Z550i
  • Sony Ericsson Z555i
  • Sony Ericsson Z610i
  • Sony Ericsson Z710i
  • Sony Ericsson Z750i
  • Sony Ericsson Z770i
  • Sony Ericsson Z780i
official cable is DCU-60

Pin Signal Description
1 USB +5V in  USB 5V supply - not used in K750
2 SP_REF  Reference / GND for handsfree
3 Mic+/AUXIN_L  Mic + / AUX in (left)/ short with pin 4 for handsfree answer (*)
4 Mic-/AUXIN_R  Mic - / AUX in - (right) / short with pin 3
5 DFMS/SP_L  DFMS / Earphones left
6 DTMS/SP_R  DTMS / Earphone right
7 VIDEO/STB  Video / strobe
8 VPPFLASH  short with pin 9 via R=130 Om for handsfree detection
9 GND Ground
10 CTMS / USB DATA+  CTMS / USB+ (data) - not used in K750
11 CFMS / USB DATA-  CFMS / USB- (data) - not used in K750
12 Charge In  Battery charge (+5V) - not used in K750

If you want to make a stereo converter with a SE socket, you should use pins 5 and 6. It may not work well with an amplifier due to low output i.e. just enough power for headphones . (May need pre-amp).

Suggestion:

To make a stereo-amp using the cell phone you must shortcircuit pins 8 and 9. Then connect the outputs (L) (R) (GND) using pins 5 = (left), 6 = (right) and 9 = (GND).

Sony-Erisson Walkman original handset uses pins 2 (GND), 5 (Left) and 6 (Right).

 

(*) For incoming call answering short pin 3 and 4

Headset for S302 and similiar phones pinout: R pin 7, L pin 8, pin 11 is GND for both channels and probbably for microphone too. Active gain should be between 50 and 200 for LM386.

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There are 40 reports in our database: 38 positive and 2 negative.
Pinouts.ru > O-W (Panasonic, Samsung,...) cell phones and smartphones connectors > Pinout of Sony Ericsson K310, K510, K610, K750, K800, M600, P990, W300, W550, W700, W710, W800, W810, W850, W900, W950, V630, Z520, Z530, Z550, Z710 cell phones (new SonyEricsson Fast Port) and layout of 12 pin SonyEricsson K750i cell phone special connector
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