Acer AL1702 AL1702W Service Guide - Page 34

Troubleshooting This chapter provides troubleshooting information for the AL1702W: 1. No Power No power Chapter 4 Press power key and look if the picture is normal NG Please reinsert and make sure the AC of 100-240 is normal OK NG Reinsert or check the power section Measure U201 Pin 3=5V, U201 Pin 2=3.3V NG OK Measure CN201 Pin3=5V? Check if X401 oscillate waveforms are normal OK Replace U201 Replace X401 NG OK Replace U401 if the picture is normal NG Replace U501 34