Acer Aspire S5-391 Acer S5-391 Notebook Service Guide - Page 97

USB Failure, Start, Swap M/B, Check IO/B, to M/B CONN, Re-assemble the, IO/B CONN to M/B

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USB Failure If the USB fails, perform the following: Start OK Check IO/B to M/B CONN OK Swap M/B NG Re-assemble the IO/B CONN to M/B Figure 4-32. USB Failure 4-23 Troubleshooting

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