Haier TV-8888-03, Руководство по обслуживанию

Страница: 6 / 30

6
Safety Precautions
IMPORTANT SAFETY NOTICE
The parts identified by many electrical and mechanical parts in this chassis have
special safety-related characteristics in the Schematic Diagram and Replacement
Parts List.
It is essential that these special 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 it’s 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 10mm 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 source of X-RAY RADIATION in this TV receiver is 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 Part 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.