Humax NA-3712 - Manual (Page 6)

GB5
• Do not attempt to service the product yourself. Refer all servicing to qualified service personnel.
Unplug the unit from the wall outlet and refer servicing to qualified service personnel under the
following conditions:
- when the power-supply cord or plug is damaged
- if liquid has been spilled on the unit or if objects have fallen into the unit
- if the product has been exposed to rain or water
- if the product does not operate normally by following the operating instructions
- if the product has been dropped or the cabinet has been damaged
- when the product exhibits a distinct change in performance
• If you make adjustments yourself, adjust only those controls that are covered by the operating
instructions. Adjusting other controls may result in damage and will often require extensive
work by a qualified technician to restore the product to normal.
• When replacement parts are required, be sure the service technician uses replacement parts
specified by the manufacturer or those that have the same characteristics as the original part.
Unauthorized substitutions may result in additional damage to the unit.
• Upon completetion of any service or repairs to this product, ask the service technician to
perform safety checks to determine that the product is in a safe operating condition.
• CATV system installation : this reminder is provided to call the CATV system installer’s attention
to article 820-40 of the nec that provides guidelines for proper grounding and in particular,
specifies that the cable ground shall be connected to the grounding system of the building,
as close to the point of cable entry as practical.