Read Panasonic UB-5838C / UB-5338C Service Manual online
3
1 General Precautions
1.1.
Safety Precautions
1.2.
Electrical Tests
1. Unplug the power cord and check for continuity between the earth ground connection on the plug and the metal cabinet.
There should be zero ohm resistance found.
2. With the unit unplugged, short the AC Live-Neutral of the plug with a jumper wire.
3. Turn ON the power switch.
4. Measure the resistance value with an ohmmeter between the jumpered AC plug and each exposed metal cabinet part, such
3. Turn ON the power switch.
4. Measure the resistance value with an ohmmeter between the jumpered AC plug and each exposed metal cabinet part, such
as screwheads, etc.
Note
Some exposed parts may be isolated from the chassis by design. They read infinity.
Note
Some exposed parts may be isolated from the chassis by design. They read infinity.
5. If the measurement is less than 1 M
Ω
, a possibility for electric shock may exit.
Note
This hazardous condition must be corrected before the unit is returned to the end user.
This hazardous condition must be corrected before the unit is returned to the end user.
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