Haier HL19KN2 Service Manual

Also see for HL19KN2: User manual

Haier HL19KN2 Service Manual Manual pdf 4 page image

1-2. General GuidelinesWhen servicing, observe the original lead dress. If a short circuit is found, replace all partswhich have been overheated or damaged by the short circuit.After servicing, see to it that all the protective devices such as insulation barriers, insulationpapers shields are properly installed.After servicing, make the following leakage current checks to prevent the customer frombeing exposed to shock hazards.1) Leakage Current Cold Check2) Leakage Current Hot Check3) Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive1-3. Important Notice1-3-1. Follow the regulations and warningsMost important thing is to list up the potential hazard or risk for the service personnel toopen the units and disassemble the units. For example, we need to describe properlyhow to avoid the possibility to get electrical shock from the live power supply or chargedelectrical parts (even the power is off).This symbol indicates that high voltage is present inside.It is dangerous tomake any king of contact with any inside part of this product.This symbol indicates that there are important operating and maintenanceinstructions in the literture accompanying the appliance.1-3-2. Be careful to the electrical shockTo prevent damage which might result in electric shock or fire, do not expose this TV setto rain or excessive moisture. This TV must not be exposed to dripping or splashing water,and objects fi lled with liquid, such as vases, must not be placed on top of or above the TV.1-3-3. Electro static discharge (ESD)Some semiconductor (solid state) devices can be damaged easily by static electricity. Suchcomponents commonly are called Electrostatically Sensitive (ES) Devices. The followingtechniques should be used to help reduce the incidence of component damage caused byelectros static discharge (ESD).1-3-4. About lead free solder (PbF)This product is manufactured using lead-free solder as a part of a movement within theconsumer products industry at large to be environmentally responsible. Lead-free soldermust be used in the servicing and repairing of this product.1-3-5. Use the genewing parts (specified parts)Special parts which have purposes of fire retardant (resistors), high-quality sound(capacitors), low noise (resistors), etc. are used.When replacing any of components, be sure to use only manufacture's specified partsshown in the parts list.Safety Component● Components identifi ed by mark have special characteristics important for safety.Service ManualModel No.:- 03 -