Haier TV-8888-30, Service Manual

Page: 5 / 30

5
SAFETY PRECAUTIONS
IMPORTANT SAFETY NOTICE
These parts identified by many electrical and mechanical parts in this chassis have
specific safety-related characteristics.
It is essential that these specific safety parts be replaced with the same components
as recommended in this manual to prevent X-RADIATION, Shock, Fire, or other
hazards.
Do not modify the original design without permission of the manufacturer.
General Guidance
An Isolation Transformer should always be used during the servicing of a receiver
whose chassis is not isolated from the AC power line. Use a transformer of adequate
power rating as this protects the technician from accidents that might result in
personal injury caused by electrical shocks.
It will also protect the receiver and its components from being damaged by
accidental shorts of the circuitry that might be inadvertently introduced during the
service operation.
If any fuse (or Fusible Resistor) in this TV receiver is blown, replace it with a
specified one.
When replacing a high wattage resistor (Oxide Metal Film Resistor, over 1W), keep
the resistor 0.39-inch away from PCB.
Keep wires away from high voltage or high temperature parts.
Due to the high vacuum and large surface area of the picture tube, extreme care
should be taken in handling the Picture Tube. Do not lift the Picture Tube by its Neck.
X-RAY Radiation
Warning:
The sources of X-RAY RADIATION in this TV receiver are the High Voltage Section
and the Picture Tube.
For continued X-RAY RADIATION protection, the replacement tube must be of the
same type as specified in the Replacement Parts List.
Before returning the receiver to the customer, always perform an AC leakage current
check on the exposed metallic parts of the cabinet, such as antennas, terminals,
etc., to make sure that the set is safe to operate without any danger of electrical
shock.