Acer Aspire 7530 Aspire 7230/7530/7530G Service Guide - Page 151

USB Failure (Rightside) If the rightside USB port fails, perform the following actions one at a time to correct the problem. Do not replace a non-defective FRUs: Modem Function Failure If the internal Modem fails, perform the following actions one at a time to correct the problem. Do not replace a non-defective FRUs: Chapter 4 141