Training Items

A.Start Up circuit intoduction(fundamental information,from Press start up button->Apple logo show->Enter into the sysyem)

B.Judge components is need for start up,(means which components is necessary for start up, which components are unnecessary for start up,and how to handle it)

C.No start up analyse and repair incluidng below:

  a.Only Apple logo show repair.

  b.Large currect when connect to power supply(battery)

  c.Large current when press start up button. ​

  d.Small current when press start up button.

  e,i2C control BUS analyse.

D.Locate fault method and repair method analyse, including:

  a.See current to judge fault.

  b.Measure voltage to judge fault.

  c.Measure impedance to judge fault.

  d.Remove method.

  e.add voltage method.

  f.Some special methods.

E.Specific circuit analyse and commom fault to repair.(focus on data recovery)

  a.Start up circuit.( specific model,like iPhone6,6s,7,8...)

  b.USB circuit.

  c.Touch circuit.

  d.LCD circuit.

  e.Charge circuit. 

  f.NAND circuit.

F.Transpalnt show,will transpalnt iPhone6,6s or iPhone7 on-site.including:

  a.Remove chip(especially remove the CPU and SDRAM)

  b.Remove the glue

  c.Clean the residue of the chip.

  d.Reball skill.

  e.Re-solder the chip back.

  f.Jump wire skill 

  g.EEPROM programm

  h.NAND programm.

  i.CPU test(to test if it is in good condition once remove it from mother board)

G.Free discuss,ask&answer for iPhone common fault.