Sony VAIO PCWA-A100 Service Manual page 10

Confirm that "Good" is displayed in the Link Quality item.
If a message other than "Good" (Acceptable, Poor, No Connection) is displayed, do the procedure again from the beginning of Section 2-1-
4, "Ethernet Link Test".
If a message other than "Good" is displayed even when the test is executed again, do the following.
• When inspecting the Access Point:
Judge the Access Point as defective.
• When inspecting the PC Card:
Judge the PC Card as defective.
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PCWA-A100/C100 (UC) 2-6