This article is one in a series to assist in the setup, troubleshooting, and maintenance of Cisco Small Business products (formerly Linksys Business Series).
Q. I have a blank screen on my SPA9XX LCD, what is the problem?A.
Check that the unit is using the correct power adapter (5Volts, 1Ampere rating).
Check if IP phone is plugged-in to a known working power outlet.
If the SPA9XX LCD screen still shows no display, then the unit is considered to be defective. Contact Support for replacement of the product.
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