Acer AL1923 AL1923 LCD Service Guide - Page 35

Trouble Shooting, No Power, No Power, Check CN7, 12V and +5V, Change, Power Board, U13,U12, Change

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Page 35 highlights

Trouble Shooting 1. No Power No Power Change NO Power Board No Check Short Of Main Board NO Change U13,U12 NO Change X1 or U4 NO Change U7 or U4 Change U7 RUN Software ISP Yes Check CN7 +12V and +5V Yes Check U13=1.8V U12=3.3V Yes Check X1=14.318MHz Yes Check U7 Pin 1,2,5,6 Clock Yes Check Key Board NO Change Key Board

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