Sharp 63CS-03SC, Руководство по обслуживанию

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ELECTRICAL SPECIFICATIONS
Aerial Input Impedance ...................75 ohm unbalanced Power Input ..............................220/240 Volts AC 50 Hz
Convergence ............................Self Converging System Power Consumption at Stand-by..............................3W
Focus.........................................Bipotential electrostatic Power Consumption ...........................................90 Wh
Audio Power Output Rating .................10+10W (M.P.O.) Speakers Size ............................................... 13cmX6cm
Picture IF Carrier Frequency ......................38.9 MHz Speaker Coil Impedance ........................................8 ohm
a) Sound IF Carrier Frequency ...................33.4 MHz Sweep Deflection ...........................................Magnetic
b) Sound IF Carrier Frequency .................33.16 MHz Tuning Ranges ........................48.25 MHz - 855.5 MHz
Colour Sub-Carrier Frequency .................34.47 MHz CATV Special channels
(Nominal)
Specifications are subject to change without prior
notice .
WARNING
The chassis in this receiver is partially hot. Use an isolation transformer between the line cord plug and power
receptacle, when servicing this chassis.
To prevent electric shock, do not remove cover. No user-serviceable parts inside. Refer servicing to qualified
service personnel.
IMPORTANT SERVICE NOTES
Maintenance and repair of this receiver should be carried out by qualified service personnel only.
SERVICING OF HIGH VOLTAGE SYSTEM AND PICTURE TUBE
When servicing the high voltage system, remove static charge from it by connecting a 1 0 k ohm resistor in
series with an insulated wire (such as test probe) between picture tube ground tag and high voltage lead. (AC
line cord should be disconnected from AC outlet).
1 . Picture tube in this receiver employs integral implosion protection.
2. Replace with tube of the same type number for continued safety.
3. Do not lift picture tube by the neck.
4. Handle the picture tube only when wearing shatterproof goggles and after discharging the high voltage
completely.
X-RAY
This receiver is designed so that any X-Ray radiation is kept to an absolute minimun. Since certain malfunctions
ar servicing may produce potentially hazardous radiation with prolonged exposure at close range, the following
precautions should be observed.
1 . When repairing the circuit, be sure not to increase the high voltage to more than 30.0 kV (at beam 1000 U.A)
for the set.
2. To keep the set in a normal operation, be sure to make it function on 23.5kV + 1.5kV (at beamlOOO ,nA) in
the case of the set. The set has been factory adjusted to the above mentioned high voltage. If there is a
possibility that high voltage fluctuates as result of the repairs, never forget to check for such high voltage
after the work.
3. Do not substitute a picture tube with unauthorized types or brands which may cause excess X-Ray radiation.
BEFORE RETURNING THE RECEIVER
In addition to the checks necessary as a result of a repair having been carried out, the following additional
safety checks should also be made before returning the units to the user.
1 . Inspect all lead insulation to make certain that leads are not pinched or that harware is not lodged
between the chassis and other metal parts in the receiver.
2. Inspect all protective devices such as non-metallic control knobs,, insulating fishpapers, cabinet backs,
adjustament and compartament covers or shields, insolation resistor-capacity networks, mechanical
insulators, etc.