Haier 32D3000B, Service Manual

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1. General Information
1-1. General Guidelines
When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.
1) Leakage Current Cold Check
2) Leakage Current Hot Check
3) Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive
1-2. Important Notice
1-2-1. Follow the regulations and warnings
Most important thing is to list up the potential hazard or risk for the service personnel to open the units and disassemble
the units. For example, we need to describe properly how to avoid the possibility to get electrical shock from the live power
supply or charged electrical parts (even the power is off).
This symbol indicates that high voltage is present inside.It is dangerous to make any king of contact with any
inside part of this product.
This symbol indicates that there are important operating and maintenance instructions in the literature
accompanying the appliance.
1-2-2. Be careful to the electrical shock
To prevent damage which might result in electric shock or fire, do not expose this TV set to rain or excessive moisture.
This TV must not be exposed to dripping or splashing water, and objects filled with water, such as vases, must be placed
on top or above the TV.
1-2-3. Electrostatic discharge (ESD)
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are
called Electrostatically Sensitive (ES) Devices. The following techniques should be used to help reduce the incidence of
component damage caused by electrostatic discharge (ESD).
1-2-4. About lead free solder (PbF)
This product is manufactured using lead-free solder as a part of a movement within the consumer products industry at
large to be environmentally responsible. Lead-free solder must be used in the servicing and repairing of this product.
1-2-5. Use the 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 parts shown in the parts list.
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