DAEWOO ELECTRONICS AMI-921DP, Service Manual

3

SAFETY PRECAUTIONS

13.Outdoor Antenna Grounding - If an outside antenna

is 

connected to the receiver be sure the antenna

system is 

grounded so as to provide some protection against voltage 
surges and built-up static

charges. Article 810 of the National 

Electrical Code,

ANSI/NFPA 70, provides information with 

regard to

proper grounding of the mast and supporting

structure, grounding of the lead-in wire to an antenna-dis
charge unit, size of grounding conductors,location of antenna-
discharge unit, connection to grounding electrodes and 
requirements for the grounding electrode.  See Figure 1.

14.Non-use Periods - The power cord of the appliance should be 

unplugged from the outlet when left

unused for a long period 

of time.

15.Object and Liquid Entry - Care should be taken so

that objects 

do not fall and liquids are not spilled into the enclosure through 
openings. 

16.Damage Requiring Service - The appliance should

be 

serviced by qualified service personnel when:
  a) The power-supply cord or the plug has been

damaged; or

  b) Objects have fallen, or liquid has been spilled

into the

      appliance; or
  c) The appliance has been exposed to rain; or
  d) The appliance does not appear to operate

normally or 

      exhibits a marked change in

performance; or

  e) The appliance has been dropped, or the

enclosure 

      damaged.

 17.Servicing - The user should not attempt to service the 

appliance beyond that described in the operating instructions. 
All other servicing 

should be referred to qualified service 

personnel.

ANTENNA DISCHARGE UNIT

(NEC SECTION 810-20)

ANTENNA LEAD

IN WIRE

POWER SERVICE GROUNDING

ELECTRODE SYSTEM

(NEC ART 250 PART H)

GROUND CLAMP

ELECTRIC

SERVICE

EQUIPMENT

GROUNDING CONDUCTORS

(NEC SECTION 810-21)

GROUND CLAMPS

EXAMPLE OF ANTENNA 

GROUNDING 

NEC - NATIONAL ELECTRICAL CODE

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