Important Safety Instructions

Read before operating equipment

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 a dry cloth.

7.Do not block any of the ventilation openings. Install in accordance with the manufacturers instructions.

8.Do not install near any heat sources such as radiators, heat regis- ters, 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 third ground- ing prong. The wide blade or third prong are provided for your safety. When the provided plug does not fit into your outlet, con- sult an electrician for replacement of the obsolete outlet.

10.Protect the power cord from being walked on or pinched particu- larly 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 a cart, stand, tripod, bracket, or table

specified by the manufacturer, or sold with the app- aratus. 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 apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

15.This product may contain lead and mercury. Disposal of these materials may be regulated due to environmental considerations. For disposal or recycling information, please contact your local authorities or the Electronic Industries Alliance: www.eiae.org

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 appli- ance; 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.Tilt/Stability - All televisions must comply with recommended international global safety standards for tilt and stability properties of its cabinet design.

• Do not compromise these design standards by applying exces- sive pull force to the front, or top, of the cabinet which could ulti- mately overturn the product.

• Also, do not endanger yourself, or children, by placing electron- ic equipment/toys on the top of the cabinet. Such items could unsuspectingly fall from the top of the set and cause product dam- age and/or personal injury.

18.Wall or Ceiling Mounting - The appliance should be mounted to a wall or ceiling only as recommended by the manufacturer.

19.Power Lines - An outdoor antenna should be located away from power lines.

20.Outdoor Antenna Grounding - If an outside antenna is connect- ed to the receiver, be sure the antenna system is grounded so as to provide some protection against voltage surges and built up static charges.

Section 810 of the National Electric Code, ANSI/NFPA No. 70- 1984, 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 connectors, location of antenna-discharge unit, connection to grounding electrodes, and requirements for the grounding electrode. See Figure below.

21.Object and Liquid Entry - Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings.

Note to the CATV system installer: 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.

Example of Antenna Grounding

as per NEC - National Electric Code

GROUND CLAMP

ELECTRIC SERVICE EQUIPMENT

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)

20RF50S specifications

The Philips 20RF50S is a notable black-and-white television that represents a significant piece of television history from the early 1970s. This model showcases Philips' commitment to quality and innovation during a time when television technology was rapidly evolving.

One of the most prominent features of the Philips 20RF50S is its compact 20-inch screen, which was ideal for smaller living spaces, making it a versatile option for many households. The model's design was simple yet functional, with clean lines and a classic aesthetic that would fit seamlessly into various interior styles.

Equipped with a reliable CRT (cathode ray tube), the Philips 20RF50S delivers a sharp and clear black-and-white image, which was impressive for the era. The television's screen provided decent contrast and brightness, ensuring viewers enjoyed a satisfying visual experience while watching their favorite programs. The model did not support color broadcast, as it was a product designed for the era before color television became the standard in most households.

The sound system on the Philips 20RF50S includes an integrated speaker that offers reliable audio quality, delivering clear dialogue and sound effects. Users appreciated its straightforward setup, as the model featured simple knobs for channel tuning and volume control.

Technologically, the Philips 20RF50S was designed with durability in mind. It incorporated materials that enhanced the longevity of the television, ensuring it could withstand the wear and tear of daily use. Many units from this time period are still functioning well today, a testament to Philips' engineering quality.

Connectivity-wise, the television includes standard RF inputs, allowing users to connect to an antenna for broadcast reception. As a result, viewers could tune into local channels without the need for additional accessories.

Overall, the Philips 20RF50S is more than just a television; it embodies a nostalgic era in broadcasting history. With its blend of simplicity, reliability, and quality, it serves as a reminder of the foundational technology that paved the way for the television advancements we benefit from today. Whether remembered fondly by those who encountered it in their childhood homes or appreciated by collectors, the Philips 20RF50S holds a unique place in the annals of television history.