Matsushita Electric DMR-ES15PL, Руководство по обслуживанию

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1. Safety Precaution
1.1. General guidelines
1. When servicing, observe the original lead dress. If a short circuit is
found, replace all parts which have been overheated or damaged by the
short circuit.
2. After servicing, see to it that all the protective devices such as
insulation barriers, insulation papers shields are properly installed.
3. After servicing, make the following leakage current checks to prevent
the customer from being exposed to shock hazards.
1.1.1. Leakage current cold check
1. Unplug the AC cord and connect a jumper between the two prongs on
the plug.
2. Measure the resistance value, with an ohmmeter, between the
jumpered AC plug and each exposed metallic cabinet part on the
equipment such as screwheads, connectors, control shafts, etc. When
the exposed metallic part has a return path to the chassis, the reading
should be between 1M and 5.2M .
When the exposed metal does not have a return path to the chassis,
the reading must be .
Figure 1
1.1.2. Leakage current hot check / (See Figure 1 .)
1. Plug the AC cord directly into the AC outlet. Do not use an isolation
2