PRECAUTIONS
Follow these safety, servicing and ESD Precautions to prevent damage and protect against
potential hazards, such as electrical shock and X-rays.
Safety Precautions
1. Be sure that all of the built-in protective devices are replaced.
Restore any missing protective shields.
2. When reinstalling the chassis and its assemblies,
be sure to restore all protective devices, including: nonmetallic control knobs
and compartment covers.
3. Make sure that there are no cabinet openings through which
people-particularly children-might insert fingers and contact dangerous
voltages. Such opening include the spacing between the picture tube and
the cabinet mask, excessively wide cabinet ventilation slots, and improperly
fitted back covers. If the measured resistance is less than 1.0 megohm or
greater than 5.2 megohms, an abnormality exists that must be corrected
before the unit is returned to the customer.
4. Leakage Current Hot Check (Figure 1-1):
Warning:Do not use an isolation transformer during this test.Use a
leakagecurrent tester or a metering system that complies with International
Electrotechnical Commission 65.(IEC 65)
FIGURE 1-1 AC LEAKAGE TEST
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ACEC
