Rolsen RDV-4002, Руководство по обслуживанию

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Rolsen RDV-4002/RDV-4003 DVD Service Manual
Service Manual
SAFTY PRECAUTIONS
GENERALS 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 are property installed.
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3. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.
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 jumped AC plug and each exposed metallic cabinet part on the equipment
such as screw-heads, connectors, control shafts, etc. When the exposed metallic part has a return path to the chassis, the reading should be
between 1M Ω and 5.2M Ω . When the exposed metal does not have return path to chassis, the reading must be ∞ .