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which use high voltage. Always follow the manufactured wiring routes / dressings.
8.
Always ensure that all internal wirings are in accordance before re-assembling the
external casing after a repairing completed. Do not allow internal wiring to be
pinched by cabinets, panels, etc. Any error in reassembly or wiring can result in
electrical leakage, flame, etc., and may be hazardous.
9.
NEVER remodel the product in any way. Remodeling can result in improper
operation, malfunction, or electrical leakage and flame, which may be hazardous.
10. Always perform an AC leakage current checking on the exposed metallic parts of the
cabinet such as antennas, terminals, screw heads, metal overlays, control shafts
and etc. to be sure that the set is safe to operate without any dangerous of electrical
shocks before returning the set to the customer.
11. The leakage current checking. (After completing the work, measure the leakage
current to prevent an electrical shock.)
Plug the AC line cord directly into a 120V AC outlet. Do not use an isolation
transformer for this check.
Use an AC voltmeter having 5000 ohms per volt or more sensitivity in the following
manner.
Connect a 1500 ohm 10 watt resistor, paralleled by a 0.15 µF, AC type capacitor, between
a known good earth ground (water pipe, conduit, etc.) and the exposed metallic parts, one
at a time. Measure the AC voltage across the combination of 1500 ohm resistor and 0.15
µF capacitor. Reverse the AC plug at the AC outlet and repeat AC voltage measurements
for each exposed metallic part. Voltage measured must not exceed 0.3 volts rms. This
corresponds to 0.2 milliamp. AC. Any value exceeding this limit constitutes a potential
shock hazard and must be corrected immediately.
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