Samsung Precaution free download

File name Precaution.pdf

1. Precautions Follow these safety, servicing and ESD precautions to prevent damage and protect against potential hazards such as electrical shock and X-rays. 1-1 Safety Precautions 1. Be sure that all of the built-in protective devices are replaced. (Reading should 2. When reinstalling the chassis and its not be above 0.5mA) assemblies, be sure to restore all protective Device devices, including control knobs and Under Leakage Test Currant compartment covers. Tester Test all 3. Make sure that there are no cabinet exposed metal surfaces openings through which people-- 2-Wire Cord particularly children--might insert fingers and contact dangerous voltages. Such Also test with plug reversed Earth openings include the spacing between the Ground (using AC adapter picture tube and the cabinet mask, plug as required) excessively wide cabinet ventilation slots, and improperly fitted back covers. Fig. 1-1 AC Leakage Test 4. Design Alteration Warning: 6. Insulation Resistance Cold Check: Never alter or add to the mechanical or (1) With the unit's AC plug disconnected electrical design of the unit. Example: Do from the AC source, connect an electrical not add auxiliary audio or video connec- jumper across the two AC prongs. (2) Set tors. Such alterations might create a safety the power switch to ON. (3) Measure the hazard. Also, any design changes or addi- resistance between the shorted AC plug and tions will void the manufacturer's warran- any exposed metallic parts. Example: ty. Screwheads, antenna, control shafts or handle brackets. 5. Leakage Current Hot Check (Figure 1-1):