Address
304 North Cardinal
St. Dorchester Center, MA 02124
Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM
Acer E5-571 notebook cannot be started for repaired
Machine model: Acer E5-571
Acer E5-571 notebook cannot be started for repaired Figure 1.
No.: A5WAH LA-B991P REV:1.0 2014-08-27
Acer E5-571 notebook cannot be started for repaired Figure 2.
Malfunction: No power on no power on, no response when pressing Switch
Maintenance process: visually inspect the mainboard clean after disassembling the machine, insert VCC 0.004 and press Switch without response. The 5 pin VCC of Switch interface JPWR1 is only 0.67V.
Acer E5-571 notebook cannot be started for repaired Figure 3.
Its pull-up VCC is provided by 3V linearity,VCC is normal, R534 resistor 100K is normal, SW3 vacancy 3 and 4 pin, that is, ON/OFFBTN# has more than 600 ground value VCC.
Acer E5-571 notebook cannot be started for repaired Figure 4.
Check the condition of EC KB9022Q-D, L31 small Inductor VCC 3.3V is normal, EC37 pin EC_RST#pin also has 3.3V,CLK is internal.
Acer E5-571 notebook cannot be started for repaired Figure 5.
Only the program, the keyboard interface Jump wire.
Acer E5-571 notebook cannot be started for repaired Figure 6.
Acer E5-571 notebook cannot be started for repaired Figure 7.
I can’t recognize the chip after connecting the programmer. It seems that there is something wrong with EC. EC is removed, and then 5 pin VCC of Switch interface JPWR1 is measured to be 3.3V.
Acer E5-571 notebook cannot be started for repaired Figure 8.
Change to EC, and then use the programmer to write the EC program downloaded from the forum.
Acer E5-571 notebook cannot be started for repaired Figure 9.
It’s turned on normally, and the maintenance is over.
Acer E5-571 notebook cannot be started for repaired Figure 10.
