AT&T SB67020 User Manual page 176

Unplug this product from the wall outlet and refer servicing to an authorized service facility under the following conditions:
When the power supply cord or plug is damaged or frayed.
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If liquid has been spilled on the product.
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If the product has been exposed to rain or water.
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If the product does not operate normally when following the operating instructions. Adjust only those controls that are
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covered by the operating instructions. Improper adjustment of other controls may result in damage and often requires
extensive work by an authorized technician to restore the product to normal operation.
If the product has been dropped and the unit has been damaged.
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If the product exhibits a distinct change in performance.
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Appendixes
Synapse SB67020 Deskset User's Guide
176