ARRIS Group Inc. MC9421 User Manual

SBV5422 SURFboard Digital Voice Modem

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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.

— If liquid has been spilled onto the product. 

— If the product has been exposed to rain or water. 

— If the product does not operate normally by following the operating instructions. 

— Adjust only those controls that are covered by the operating instructions, as 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 base and/or handset has been damaged. 

— If the product exhibits a distinct change in performance.

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Wipe the base unit with a clean, dry cloth. Use a damp cloth to clean the handset. Never 
use cleaning fluid or similar chemicals. Never spill pour liquids into the device. Do not 
spray cleaners directly on the device or use forced air to remove dust. 

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Upon completion of any service or repairs to this device, ask the service technician to 
perform safety checks to determine that the device is in safe operating condition.

•

Do not open the device. Do not perform any servicing other than that contained in the 
installation and troubleshooting instructions. Refer all servicing to qualified service 
personnel.

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This device should not be used in an environment that exceeds 50°C. 

SAVE THESE INSTRUCTIONS.

Note to CATV System Installer - 

This reminder is provided to call the CATV system installer’s 

attention to Section 820.93 of the National Electric Code, which provides guidelines for 
proper grounding and, in particular, specifies that the Coaxial cable shield shall be connected 
to the grounding system of the building, as close to the point of cable entry as practical.