Service Manuals, User Guides, Schematic Diagrams or docs for : InFocus Monitor Infocus_930_920_900_[SM]

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900 Series Service Guide




                     010-0319-00
           SAFETY PRECAUTION

WARNING: Service should not be attempted by anyone unfamiliar with the necessary precautions on this
projector. The following are the necessary precautions to be observed before servicing this chassis.
1 . An isolation Transformer should be connected in the power line between the projector and the AC Iine
   before any service is performed on the projector.
2. When replacing a chassis in the cabinet, always be certain that all the protective devices are put back in
   place, such as; non-metallic control knobs, insulating covers, shields, isolation resistor-capacitor network
   etc.
3. Before returning the set to the customer, always perform an AC Ieakage current check on the exposed
  metallic parts of the cabinet, such as terminals, screwheads, metal overlays, control shafts etc. to be sure
  the set is safe to operate without danger of electrical shock. Plug the AC Iine cord directly into a AC outlet
  (do not use a line isolation transformer during this check). Use an AC voltmeter having 5000ohm per volt or
  more sensitivity in the following manner: Connect a1500ohm 10W resistor, paralleled by a 0.15 

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