Sharp SX76NF200, Руководство по обслуживанию

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2
2-1 2-2
SX76NF200
SPECIFICATIONS
Convergence ................................................................. Self Convergence System
Focus ........................................................... Electrostatic Focus High Bi-Potential
Sweep Deflection ...................................................................................... Magnetic
Intermediate Frequencies
Picture IF Carrier .................................................................................. 38.9MHz
Sound IF Carrier Frequency
5.5MHz .............................................................................................. 33.4MHz
Colour Sub-Carrier Frequency ............................................................ 34.47MHz
Power Input ........................................................................ AC 220 ~ 240V 50 Hz
Power Consumption ...................................................................................... 163W
Audio Power Output Rating ............................................ 5W + 5W + 10W(at Max.)
Speaker
Size .............................................................................. 11 x 5 cm Elliptic (2 pcs)
10cm Round (1pc)
Voice Coil Impedance ..............................................................4 ohm (11 x 5cm)
8 ohm (10cm)
Aerial Input Impedance
VHF/UHF ............................................................................ 75 ohm Unbalanced
Receiving System (PAL-B/G)
VHF ....................................................................................... AU 0 thru AU 12 ch
UHF ........................................................................................ E 21 thru E 69 ch
Receiving Frequency ................................................... 45.25MHz thru 855.25MHz
Dimensions ................................................................................... Width: 880.0mm
Height: 566.0mm
Depth: 545.0mm
Weight(approx): 54.5 kg
Cabinet material .................................................................................... All Plastics
Specifications are subject to change without prior notice.
IMPORTANT SERVICE NOTES
Maintenance and repairing of this receiver should be done by quali-
fied service personnel only.
SERVICE OF HIGH VOLTAGE SYSTEM AND PIC-
TURE TUBE
When servicing the high voltage system, remove static charge from it by
Connecting a 10K ohm Resistor in series with an insulated wire(such as a
test probe) between picture tube dag and 2nd anode 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
Minimum. Since certain malfunctions or 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 34.5kV(at
beam 0
µ
A) for the set.
2. To keep the set in a normal operation , be sure to make it function on 30.5kV
±
1.5kV(at
beam 1800
µ
A) in the case of the set. The set has been factory - Adjusted to the above-
mentioned high voltage.
* If there is a possibility that the high voltage fluctuates as a result of the repairing,
never forget to check for such high voltage after the work.
3. Do not substitute a picture tube with unauthorized types and/or brands which may cause
excess X-ray radiation.
BEFORE RETURNING THE RECEIVER
Before returning the receiver to the user, perform the following safety Checks.
1. Inspect all lead dress to make certain that leads are not pinched or that hardware 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, adjustment and compartment covers or shields, isolation resistor- ca-
pacity networks, mechanical insulators etc.