Hansol H950VI B19BF, Service Manual, Page: 4 / 41

Service Manual 4
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 ,Signal cable and Stereo cable before servicing.
1-1-2 Servicing the LCD Monitor
1. When servicing the LCD Monitor Disconnect the AC power 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 following safety checks :
1. Inspect each lead dress to make certain that the leads are not pinched or that hardware is not
lodged between the chassis and other metal parts in the monitor.
2. Inspect all protective devices such as nonmetallic control knobs, insulating materials, cabinet
backs, adjustment and compartment covers or shields, isolation resistor-capacitor networks,
mechanical insulators, etc.
3. To be sure that no shock hazard exists, check for leakage current in the following manner.
Warning : Do not use an isolation transformer during this test.
a. Plug the AC line cord directly into a 120 Volt AC outlet.
b. Unisg two clip leads, connect 1.5 , 10 watt resistor paralleled by a 0.15 capacitor in series
with an exposed metal cabinet part and a known earth ground, such as an electrical conduit or
electrical ground connected to an earth ground.