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1. Unplug the power cord and short the two prongs of the plug with
a jumper wire.
2. Turn on the power switch.
3. Measure the resistance value with an ohmmeter between the
jumpered AC plug and each exposed metal cabinet part (screw
heads, control shafts, bottom frame, etc.).
Note: Some exposed parts may be isolated from the chassis by
design. These will read infinity.
4. If the measurement is outside the specified limits, there is a
possibility of a shock hazard. / The equipment should be repaired
and rechecked before it is returned to the customer.
1.4. FOR SERVICE TECHNICIANS
ICs and LSIs are vulnerable to static electricity. / When repairing, the following precautions will
help prevent recurring malfunctions.
1. Cover the plastic part's boxes with aluminum foil.
2. Ground the soldering irons.
3. Use a conductive mat on the worktable.
4. Do not touch the IC or LSI pins with bare fingers.
1.5. BATTERY CAUTION
3
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