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 (READING SHOULD board. NOT BE ABOVE 0.5mA) 2. Disconnect the AC power and DC Power Jack before servicing. DEVICE LEAKAGE CURRENT 1-1-2 Servicing the LCD TV UNDER TESTER TEST TEST ALL EXPOSED METAL 1. When servicing the LCD TV Disconnect the AC line SURFACES cord from the AC outlet. 2-WIRE CORD 2. It is essential that service technicians have an accurate voltage meter available at all times. Check the calibration of this meter periodically. ALSO TEST WITH PLUG REVERSED (USING AC ADAPTER 1-1-3 Fire and Shock Hazard PLUG AS REQUIRED) EARTH GROUND Before returning the LCD TV 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 4. With the unit completely reassembled, plug the AC line not pinched or that hardware is not lodged between the cord directly into a 120V AC outlet. With the unit's AC chassis and other metal parts in the LCD TV. switch first in the ON position and then OFF, measure 2. Inspect all protective devices such as nonmetallic control the current between a known earth ground (metal water