English-21
English
The requirements cover a wide range of issues: environment,
ergonomics, usability, emission of electrical and magnetic fields, energy
consumption and electrical and fire safety.
The environmental demands concern restrictions on the presence and
use of heavy metals, brominated and chlorinated flame retardants, CFCs
(freons) and chlorinated solvents, among other things. The product must
be prepared for recycling and the manufacturer is obliged to have an
environmental plan which must be adhered to in each country where the
company implements its operational policy. The energy requirements
include a demand that the computer and/or display, after a certain period
of inactivity, shall reduce its power consumption to a lower level in one or
more stages. The length of time to reactivate the computer shall be
reasonable for the user.
Labelled products must meet strict environmental demands, for example,
in respect of the reduction of electric and magnetic fields, physical and
visual ergonomics and good usability.
Environmental Requirements
Flame retardants
Flame retardants are present in printed circuit boards, cables, wires,
casings and housings. In turn, they delay the spread of fire. Up to thirty
percent of the plastic in a computer casing can consist of flame retardant
substances. Most flame retardants contain bromine or chloride and these
are related to another group of environmental toxins, PCBs, which are
suspected to give rise to severe health effects, including reproductive
damage in fisheating birds and mammals, due to the bioaccumulative*
processes. Flame retardants have been found in human blood and
researchers fear that disturbances in foetus development may occur.
TCO’ 99 demand requires that plastic components weighing more than
25 grams must not contain flame retardants with organically bound
chlorine and bromine. Flame retardants are allowed in the printed circuit
boards since no substitutes are available.
Lead**
Lead can be found in picture tubes, display screens, solders and
capacitors. Lead damages the nervous system and in higher doses,
causes lead poisoning.
TCO’ 99 requirement permits the inclusion of lead since no replacement
has yet been developed.
Содержание MultiSync FP1355 FP1355 FP1355
Страница 20: ...1 14 Figure 5 Horizontal deflection circuit Q503 Q504 T502 Q502 D503 C506 L540 LIN IC501 Q540 Q510 215V ...
Страница 23: ...1 17 Q502 Q502 Damper diode Current waveform fh 106k ...
Страница 25: ...1 19 Q502 Q502 Damper diode Current waveform Q502 Ic Q502 Vce ...
Страница 58: ...1 52 Figure 25 IC211 MC13289ASP block diagram ...
Страница 63: ...1 57 Figure 30 IC212 XC3824P2 block diagram ...
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Страница 144: ... VSP C0464 REVISE 2 ...
Страница 166: ...Fig 2 BEZEL LOGO VSP C0464 COLOR OF LETTERING Kingfisher Blue 6704 11 5 24 5 66 ...
Страница 169: ...VSP C0464 Fig 5 1 PRINTING SPECIFICATION OF CARTON BOX North America ...
Страница 170: ...VSP C0464 Fig 5 2 PRINTING SPECIFICATION OF CARTON BOX Europe ...
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