Samsung 02 Precaution free download

File name 02_Precaution.pdf

1 Precautions 1 Precautions Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock. 1-1 Safety Precautions 1-1-1 Warnings 1. For continued safety, do not attempt to modify the circuit board. 2. Disconnect the AC power and DC Power Jack before servicing. 1-1-2 Servicing the LCD Monitor 1. When servicing the LCD Monitor Disconnect the AC line cord from the AC outlet. 2. It is essential that service technicians have an accurate voltage meter available at all times. Check the calibration of this meter periodically. 1-1-3 Fire and Shock Hazard Before returning the monitor to the user, perform the Figure 1-1. Leakage Current Test Circuit following safety checks: 1. Inspect each lead dress to make certain that the leads are not pinched or that hardware is not lodged between 1-1-4 Product Safety Notices the chassis and other metal parts in the monitor. Some electrical and mechanical parts have special 2. Inspect all protective devices such as nonmetallic safety-related characteristics which are often not evident control knobs, insulating materials, cabinet backs, from visual inspection. The protection they give may not adjustment and compartment covers or shields, be obtained by replacing them with components rated for isolation resistor-capacitor networks, mechanical higher voltage, wattage, etc. Parts that have special safety insulators, etc. characteristics are identified by on schematics and parts lists. A substitute replacement that does not have the same 3. Leakage Current Hot Check (Figure 1-1): safety characteristics as the recommended replacement part WARNING: Do not use an isolation might create shock, fire and/or other hazards. Product transformer during safety is under review continuously and new instructions this test. are issued whenever appropriate. Use a leakage current tester or a metering system that complies with American National Standards Institute (ANSI C101.1, Leakage Current for Appliances), and Underwriters Laboratories (UL Publication UL1410, 59.7). 1-1 1 Precautions 1-2 Servicing Precautions WARNING: An electrolytic capacitor installed with the wrong polarity might explode. Caution: Before servicing units covered by this service man