Panasonic TC-L42U25 Operating Instruction

Safety Precautions

4

ANTENNA

LEAD-IN WIRE

ANTENNA

DISCHARGE UNIT 

(NEC SECTION 810-20)
GROUNDING 

CONDUCTORS

 (NEC SECTION 810-21)

GROUND CLAMPS

POWER SERVICE GROUNDING 

ELECTRODE SYSTEM 

(NEC ART 250, PART H)

ELECTRIC 

SERVICE 

EQUIPMENT

GROUND CLAMP

EXAMPLE OF ANTENNA 

GROUNDING AS PER 

(NEC) NATIONAL 

ELECTRICAL

CODE

Safety Precautions

Note to CATV System Installer

This reminder is provided to direct 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.

Secure Ventilation

Slots and openings in the cabinet and the back or bottom are provided for ventilation, and to ensure reliable operation of the LCD 

TV and to protect it from overheating. These openings must not be blocked or covered. There should be at least 10 cm of space 

from these openings. The openings should never be blocked by placing the LCD TV on a bed, sofa, rug or other similar surface. 

This LCD TV should not be placed in a built-in installation such as a bookcase unless proper ventilation is provided.

Important Safety Instructions

1)  Read these instructions.
2)  Keep these instructions.
3)  Heed all warnings.
4)  Follow all instructions.
5)  Do not use this apparatus near water.
6)  Clean only with dry cloth.
7)  Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions. 
8)  Do not install near any heat sources such as radiators, heat registers, stoves or other apparatus (including amplifiers) that 

produce heat.

9)  Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider 

than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are 
provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the 
obsolete outlet. 

10)  Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and 

the point where they exit from the apparatus.

11)  Only use attachments / accessories specified by the manufacturer.
12)  Use only with the cart, stand, tripod, bracket or table specified by the manufacturer, or sold with the 

apparatus. When a cart is used, use caution when moving the cart / apparatus combination to avoid injury 
from tip-over.

13)  Unplug this apparatus during lightning storms or when unused for long periods of time.
14)  Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any 

way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the 
apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

15)  Operate only from the type of power source indicated on the marking label. If you are not sure of the type of power supplied 

to your home consult your television dealer or local power 
company.

16)  Follow all warnings and instructions marked on the LCD TV.
17)  Never push objects of any kind into this LCD TV through cabinet 

slots as they may touch dangerous voltage points or short out 
parts that could result in a fire or electric shock. Never spill liquid 
of any kind on the LCD TV.

18)  If an outside antenna is connected to the television equipment, 

be sure the antenna system is grounded so as to provide some 
protection against voltage surges and built up static charges. 
In the U.S. Section 810-21 of the National Electrical Code 
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.

  

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

  

WARNING: To reduce the risk of electric shock, do not remove cover or back.
No user-serviceable parts inside. Refer servicing to qualified service personnel.

The lightning flash with arrowhead 

within a triangle is intended to tell the 

user that parts inside the product are a 

risk of electric shock to persons.
The exclamation point within a 

triangle is intended to tell the 

user that important operating and 

servicing instructions are in the 

papers with the appliance.

tc_L42_u25_eng_0583.indb   4

tc_L42_u25_eng_0583.indb   4

2010/01/29   13:00:38

2010/01/29   13:00:38