Roadstar LCD-3500, Руководство по обслуживанию

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SAFETY PRECAUTIONS
WARINING:BEFORE SERVICING THIS CHASSIS, READ
“
SAFETY PRECAUTIONS
”
AND
“
PRODUCT SAFETY NOTICE
”
SAFETY INSTRUCTIONS
1. Potential as high as 600-800 volts is present when this receiver in operating.
Operation of the receiver outside the cabinet or with the back cover removed
risks a shock hazard fromThe receiver.
(1) Servicing should not be attempled by anyone who in not htoroughly familiar
with the precautions necessary when working on high-volage equipment.
If any fuse in this TV receiver is down, replace it with the fuse specified
in the chassis Parts list.
2. When replacing parts or circuit boards, wind the lead wires around terminals
before Soldering.
3. When replacing a high wattage resistor(metel oxide film resistor) in the
circuit board, keep the resistor 10mm away from circuit board.
4. Keep wires away from high voltage or high temperature components.
5. This TV receiver should be connected to DC 8V.
6. Before returning the set to the customer, always perform an AC leakage current
check on the Exposed metallic parts of the cabinet, such as antennas, terminals,
soresheads, metal overlays Shock. Plug the AC line cord directly into a 240V
AC outlet. (Do not use a line isolation transformer during this check. Use an
ac voltmeter having 1500 ohms per volt sensitivity or more in the following
manner.)With the unit AC switch first ON and OFF, measure form a known
ground(metal waterpipe, conduit,etc.) to all exposed metal parts of the TV
receiver(antennas, handle bracket, metal cabinet screwheads metallic overays,
control shafts, etc.) especially any exposed metal parts that offer an
electrical return path to the chassis. Any measured current must not exceed
0.5 milliamp. Reverse the power cord plug in the outlet and repeat the test.
Any measurements not within the limits specified herein indicate a potential
shock hazard that must be eliminated before returning the set to the customer.