Samsung Precaution free download

File name Precaution.pdf

Precaution 1. Precaution To avoid possible damage, electric shocks or exposure to radiation, follow the instructions below with regard to safety, installation, service and ESD. 1-1 Safety Precautions 1. Make sure all protective devices are properly installed 6. Warning - Hot Chassis: including non-metallic handles and compartment covers Some TV chassis are directly connected to one end of when installing or re-installing the chassis or chassis the AC power cord for electrical reasons. Without assemblies. insulated transformers, the product can only be repaired safely when the chassis is connected to the earth end of 2. Make sure there aren't any gaps between the front and the AC power source. rear cover that anyone could insert they're fingers into and receive any electrical shock. These gaps include To make sure the AC power cord is properly connected, ventilation holes, cracks, etc. follow the instructions below. Use the voltmeter to measure the voltage between the chassis and the earth Errors may occur when the resistance is below 1.0 or ground. If the measurement is over 1.0V, unplug the AC over 5.2 . In these cases, make sure that the device power cord and change the polarity before re-inserting it. is repaired before sending it back to the customer. Measure the voltage between the chassis and the ground again. 3. Check for Electricity Leakage (Figure 1-1) Warning: Do not use an insulated transformer for 7. Some TV chassis are shipped with an additional checking the leakage. Use only those current leakage secondary grounding system. The secondary system is testers or mirroring systems that comply with ANSIC adjacent to the AC power line. These two grounding 101.1 and the Underwriter Laboratory's specifications systems are separated in the circuit using an (UL1410, 59.7). unbreakable/unchangeable insulation material. Fig. 1-1 AC Leakage Test 8. When any parts, material or wiring appear overheated or damaged, replace them with new immediately. When any damage or overheating is detected, correct this