Acer 4552 사용자 설명서

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Chapter 4

Touchpad Failure

If the Touchpad doesn’t work, perform the following actions one at a time to correct the problem. Do not 

replace a non-defective FRUs:

Internal Speaker Failure

If the internal Speakers fail, perform the following actions one at a time to correct the problem. Do not replace 

a non-defective FRUs: