Acer AL1751 AL1751 Service Guide - Page 32

Troubleshooting - adapter

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Page 32 highlights

Chapter 3 Troubleshooting This chapter provides troubleshooting information for the AL1751: 1. No power No power Press power key and look if the picture is normal NG Measure 12V input voltage OK NG Check the adapter section Measure U702 PIN2=5V? NG OK Replace U702 NG X402 oscillate waveform is normal NG Replace X402 OK Replace U402 NG Replace U401 32

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