Samsung Precaution free download

File name Precaution.pdf

Precautions 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. Restore any missing (READING SHOULD protective shields. LEAKAGE NOT BE ABOVE DEVICE CURRENT 0.5mA) UNDER TESTER TEST 2. When reinstalling the chassis and its TEST ALL assemblies, be sure to restore all protective EXPOSED METAL SURFACES devices, including: nonmetallic control knobs 2-WIRE CORD and compartment covers. ALSO TEST WITH PLUG REVERSED 3. Make sure that there are no cabinet openings (USING AC ADAPTER EARTH through which people--particularly PLUG AS REQUIRED) GROUND children--might insert fingers and contact dangerous voltages. Such openings include Fig. 1-1 AC Leakage Test the spacing between the picture tube and the cabinet mask, excessively wide cabinet 6. Antenna Cold Check: ventilation slots, and improperly fitted back With the unit's AC plug disconnected from the covers. AC source, connect an electrical jumper across the two AC prongs. Connect one lead of the If the measured resistance is less than 1.0 ohmmeter to an AC prong. Connect the other megohm or greater than 5.2 megohms, an lead to the coaxial connector. abnormality exists that must be corrected before the unit is returned to the customer. 7. X-ray Limits: The picture tube is especially designed to pro- 4. Leakage Current Hot Check (Figure 1-1):