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2 - Safety instruction
WARNING: Only competent service personnel may carry out work involving the testing or repair of this
equipment.
X-RAY RADIATION PRECAUTION
1. Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid such
hazards, the high voltage must not exceed the specified limit. The nominal value of the high voltage of
this receiver is 26~28 KV (25" - 29") at max beam current. The high voltage must not under any
circumstances, exceed 29.5 KV (25") or 31 KV (29"). Each time a receiver requires servicing, the
high voltage should be checked. It is important to use an accurate and reliable high voltage meter.
2.The only source of X-ray Radiation in this TV receiver is the picture tube. For continued X-ray
RADIATION protection, the replacement tube must be exactly the same type tube as specified in the
parts list.
SAFETY PRECAUTION
1. Potentials of high voltage are present when this receiver is operating. Operation of the receiver outside
the cabinet or with the back board removed involves a shock hazard from the receiver.
1) Servicing should not be attempted by anyone who is not thoroughly familiar with the precautions
necessary when working on high voltage equipment.
2) Discharge the high potential of the picture tube before handling the tube. The picture tube is highly
evacuated and if broken, glass fragments will be violently expelled.
2. If any Fuse in this TV receiver is blown, replace it with the FUSE specified in the Replacement Parts
List.
3. When replacing a high wattage resistor (oxide metal film resistor) in circuit board, keep the resistor 10
mm away from circuit board.
4. Keep wires away from high voltage or high temperature components.
5. This receiver must operate under AC 240 volts, 5O Hz. NEVER connect to DC supply or any other
power or frequency.
PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in this equipment have special safety-related characteristics. These
characteristics are often passed unnoticed by a visual inspection and the X-ray Radiation protection
afforded by them cannot necessarily be obtained by using replacement components rated for higher
voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in
this manual and its supplements, electrical components having such features are identified by designated
symbol on the parts list. Before replacing any of these components, read the parts list in this manual
carefully. The use of substitutes replacement parts which do not have the same safety characteristics as
specified in the parts list may create X-ray Radiation.
-7-
Service Manual CP-785A
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