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    Scheme acer aspire one 722

    a friend has the schema acer Aspire one 722 for me because I am sending precissando motherboard LA 7071P

    #2
    Re: Scheme acer aspire one 722

    http://lmgtfy.com/?q=LA+7071P

    s-manuals.com

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      #3
      Re: Acer aspire one 722 bios needed

      Last night I've managed to fix AO722 with can't power On problem.
      Current Amp Drawn on my adapter+ (have been combined with DC Ammeter so it be able to monitor current if display come out, charging proccess, and will shut off if 19V rails was shorted. (features built in on original adapter)
      0.0235A

      Some reading of measurements :
      Resistance to GND in Diode mode (DT9205D) more fast reading than Ohm mode, measurement without APPLYING POWER to the board.
      PJ5 (+VSB) = 0.735
      PJ1 (+3VALW) = 0.593
      PJ3 (+5VALW) = 0.662
      PJ2 (+1.1ALW) = 0.292
      PJ6 (0.75VS) = 0.132
      PJ9 (+1.05V) = 0.290
      PJ7 (+1.8VS = 0.382
      PJ4 (+1.05VS) = 0.059
      PL16 (Apu_NB) = 0.012
      PL17 (Apu core) = 0.283
      U14 (1,2,3) = 0.961
      U15 (1,2,3) = 0.513
      U16 (1,2,3) = 0.094

      Voltages reading APPLYING POWER

      PJ5 (+VSB) = 18.80V
      PJ1 (+3VALW) = 3.362V
      PJ3 (+5VALW) = 5.11V
      PJ2 (+1.1ALW) = 1.205V
      PJ6 (0.75VS) = ~*
      PJ9 (+1.05V) = ~*
      PJ7 (+1.8VS = ~*
      PJ4 (+1.05VS) = ~*
      PL16 (Apu_NB) = ~*
      PL17 (Apu core) = ~*
      U14 (1,2,3) = ~*
      U15 (1,2,3) = ~*
      U16 (1,2,3) = ~*
      PQ3 (2) = 4.85V (POK)
      U9 (3) = 3.3V (LID_SW#)
      PQ13 (1/output) = 0V (PACIN and ACIN) NG*
      PQ1 (1,2,3) = ~18V NG*
      VMB/BATT+ = 18.81V NG*
      SW1 = 17.96V NG*
      B+ (PR20) = 18.81V (VOLTAGE PRESENT but Low resistance/0.178 realize after know that PR26 was open, probably kill the battery) NG*
      PR26 = open
      PU2 (24) = shorted to GND

      NG* = Not Good
      ~* = Can't Switch ON

      schematic:
      http://********/notebook/acer_aspire_one_ao722

      datasheets (to know pin out):
      https://cdn.badcaps-static.com/pdfs/...85b179adf4.pdf
      https://cdn.badcaps-static.com/pdfs/...d4bcdd1b93.pdf

      https://cdn.badcaps-static.com/pdfs/...11df91fa10.pdf
      https://cdn.badcaps-static.com/pdfs/...da66a0a8a8.pdf

      Solution:

      Replace PR26 10ohm / 10_1206_5%
      Replace PU2 ISL6251AHAZ
      current drawn on my adapter 0.0092A after fix it

      Test laptop couple hours, will update soon.
      Hope will help you!
      Attached Files
      Last edited by Vesko356; 10-15-2023, 12:32 PM. Reason: External url removed. Shematic attached to the post. Post moved.

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