Precautions
Before using this umt please read these operating instructions carefully. Take special care to follow the warnings indicated on the unit itself as well as the safety suggeshons listed below. Afterwards keep them handy for future reference.
Safety1.Power Source -- The umt should be connected to power sup- ply only of the type described in the operating instructions or as marked on the unit.
2.Polarization -- If the unit is equipped with a polarized AC power plug (a plug having one blade wider than the other), that plug will fit into the AC outlet only one way. This is a safe- ty feature If you are unable to insert the plug fully into the outlet, try reversing the plug. If the plug should still fail to fit, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the polarized plug.
3.Power Cord Protection -- AC power supply cords should be
routed so that they are not likely to be walked on or pinched by items placed upon or against them Never take hold of the plug or cord If your hand is wet, and always grasp the plug body when connecting or disconnecting it.
4.Nonuse Periods -- When the unit is not used, turn the power off When left unused for a long period of time, the unit should be unplugged from the household AC outlet.
Installation
Environment
1.Outdoor Antenna Grounding -- If an outs,de antenna _scon- nected to the receiver, be sure the antenna system is ground- ed so as to provide some protection against voltage surges and built-up static charges. Section 810 of the National Elec- trical Code, ANSlINFPA No. 70-1990, provides information
with respect to proper grounding of the mast and supporting structure, grounding of the lead-in wire to an antenna discharge unit, size of grounding conductors, location of
antenna-discharge unit, connection to grounding electrodes, and requirements for the grounding electrode. See figure below
ANTENNA
LEAD IN
WIRE
CLAMP
.ANTENNA DISCHARGE UNIT (NEC SECTION 810-20)
3ONDUCTORS 810-21)
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250, PART H)
NEC- NATIONAL ELECTRICAL CODE
2.Water and Moisture -- Do not use this unit near water - for ex- ample, near a bathtub, washbowl, swimming pool, or the like. Damp basements should also be avoided.
3.Heat -- The unit should be situated away from heat sources such as radiators and the like.
It also should not be placed in temperatures less than 5°C (41° F) or greater than 35°C (95 ° F).
Placement
1.Ventilation -- The unit should be s_tuated so that its location or position does not interfere with its proper ventilation. Allow
10 cm (4") clearance from the rear of the unit.
2.Foreign Material --Care should be taken so that objects do not fall into and liquids are not spilled into the unit. Do not sub-
ject this unit to excessive smoke, dust, mechanical vibration, or shock
3.Magnetism -- The unit should be situated away from equip- ment or devices that generate strong magnetism.
4.Stacking --Do not place heavy objects, other than system components, on top of the unit.
5.Surface --Place the unit on a flat, level surface.
6.Carts and Stands --The unit should be used only with a cart or stand that is recommended by the
manufacturer. The unit and cart combination should be moved with care.
Quick stops, excessive force, and uneven surfaces may cause the unit and cart com- bination to overturn.
7.Wall or Ceiling Mounting -- The unit should not be mounted
to a wall or ceiling, unless specified in this operating instruc- tions.
Maintenance
Clean the cabinet, panel and controls with a soft cloth lightly moistened with mild detergent solution.
Do not use any type of abrasive pad, scouring powder or solvent such as alcohol or benzine.
Service
1.Damage Requiring Service -- The umt should be serviced by qualified service personnel when:
(a)The AC power supply cord or the plug has been damaged, or
(b)Objects have fallen or liquid has been spilled into the unit;
or
(c)The unit has been exposed to rain; or
(d)The unit does not appear to operate normally or exhibits a marked change in performance; or
(e)The unit has been dropped, or the enclosure damaged.
2.Servicing -- The user should not attempt to service the unit beyond that described in the operating instructions. All other servicing should be referred to qualified service personnel.
