Daewoo DTR-14D3VG, Service Manual

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2
Safety Instruction
WARNING: Before servicing this chassis, read the “X-RAY RADIATION precaution”, “safety precaution”
and “product safety notice” below.
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 23-24kv(14”), 26-
27kv(20”, 21”) at max beam current. The high
voltage must not, under any circumstances,
exceed 27.5kv (14", 20”), 29.0kv(21”).
Each time a receiver requires servicing, the high
voltage should be checked. It is recommended
the reading of the high voltage recorded as a part
of the service records. 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 continuous
RADIATION protection, the replacement tube
must be exactly the same type tube as specified
in the parts list.
1. Potentials of high voltage are present when this
receiver is operating. Operation of the receiver
outside the cabinet or with the back cover
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) Always discharge the picture tube to avoid the
shock hazard before removing the anode cap.
3) 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 10mm away from circuit board.
4. Keep wires away from high voltage or high
temperature components.
5. This receiver must operate under AC260 volts,
50Hz/60Hz. (AC 100~250 volts, 50/60Hz)NEVER
connect to DC supply or any other power or
frequency.
Many electrical and mechanical parts in this
chassis 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.
X-RAY RADIATION PRECAUTION
PRODUCT SAFETY NOTICE
SAFETY PRECAUTION