Panasonic CT32SC13G Service Manual - Page 6

current measure must not exceed 0.5 milliamp. Ifany measurement is out of the specified limits, - model

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http://tsn.pstc.panasonic.com/viewing/NA/CT-36SL13G/SVC/s0100000000x.html Unplug the A.C. cord and connect a jumper between the two plug prongs.Measure the resistance between the jumpered AC plug and expose metallic parts such as screwheads, antenna terminals, control shafts, etc. If the exposed metallic part has a returnpath to the chassis, the reading should be between 240kΩ and 5.2MΩ. If the exposed metallic part does not have a return path to the chassis, the reading should be infinite. Leakage current hot check Plug the AC cord directly into the AC outlet. Do not use an isolation transformer during the check. Connect a 1.5kΩ 10 watt resistor in parallel with a 0.15F capacitor between an exposed metallic part and ground. Use earth ground, for example a water pipe. Using a DVM with a 1000 ohms/volt sensitivity or higher, measure the AC potential across the resistor. Repeat the procedure and measure the voltage present with all other exposed metallic parts. Verify that any potential does not exceed 0.75 volt RMS. A leakage current tester (such a Simpson model 229, Sencore model PR57 or equivalent) may be used in the above procedure, in which case any current measure must not exceed 0.5 milliamp. Ifany measurement is out of the specified limits, there is a possibility of a shock hazard and the receiver must be repaired and rechecked before it is returned to the customer. Hot check circuit Insulation test Connect an insulation tester between an exposed metallic part and A.C. line. Apply 1080VAC/60Hz for 1 second. Confirm that the current measurement is 0.5mA ~ 2.0mA. Repeat test with other metallic exposed parts. X ray radiation http://tsn.pstc.panasonic.com/viewing/NA/CT-36SL13G/SVC/s0100000000x.html (2 of 3)05.12.2008 0:00:16

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Unplug the A.C. cord and connect a jumper between the two plug prongs.Measure the resistance
between the jumpered AC plug and expose metallic parts such as screwheads, antenna terminals, control
shafts, etc. If the exposed metallic part has a returnpath to the chassis, the reading should be between
240k
Ω
and 5.2M
Ω
. If the exposed metallic part does not have a return path to the chassis, the reading
should be infinite.
Leakage current hot check
Plug the AC cord directly into the AC outlet. Do not use an isolation transformer during the check.
Connect a 1.5k
Ω
10 watt resistor in parallel with a 0.15
μ
F capacitor between an exposed metallic part
and ground. Use earth ground, for example a water pipe.
Using a DVM with a 1000 ohms/volt sensitivity or higher, measure the AC potential across the resistor.
Repeat the procedure and measure the voltage present with all other exposed metallic parts.
Verify that any potential does not exceed 0.75 volt RMS. A leakage current tester (such a Simpson
model 229, Sencore model PR57 or equivalent) may be used in the above procedure, in which case any
current measure must not exceed 0.5 milliamp. Ifany measurement is out of the specified limits, there is
a possibility of a shock hazard and the receiver must be repaired and rechecked before it is returned to
the customer.
Hot check circuit
Insulation test
Connect an insulation tester between an exposed metallic part and A.C. line. Apply 1080VAC/60Hz for
1 second. Confirm that the current measurement is 0.5mA ~ 2.0mA. Repeat test with other metallic
exposed parts.
X ray radiation