vSafety Check after Servicing
Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been
returned to original positions, Afterwards, perform the following tests and confirm the specified values in order to verify compli-
ance with safety standards.
1. Leakage current test
Confirm specified or lower leakage current between earth ground/power cord plug prongs
and externally exposed accessible parts (RF terminals, antenna terminals, video and audio
ab
input and output terminals, microphone jacks, earphone jacks, etc.).
Measuring Method : (Power ON)ZAc
Externally
Insert load Z between earth ground/power cord plug prongs and externally exposed accessi-exposedV
ble parts. Use an AC voltmeter to measure across both terminals of load Z. See figure 9 andaccessible part
following table 2.
Fig. 8
2. Grounding (Class 1 model only)
Confirm specified or lower grounding impedance between earth pin and externally exposed accessible parts (Video in, Video out,
Audio in, Audio out or Fixing screw etc.).
Measuring Method:
Connect milli ohm meter between earth pin and exposed accessible parts. See figure 10 and grounding specifications.
Grounding Specifications
Exposed accessible part
RegionGrounding Impedance (Z)
USA & CanadaZ 0.2 ohmL
Earth pinEurope & AustraliaZ 0.2 ohmL
Milli ohm meter
Earth
Fig. 9
< MEDICAL USE >
AC Line VoltageRegionLoad ZLeakage Current ( i )a, b, c
100 VJapani 0.1 mAExposed accessible parts
1 k?
0.15 ?F
110 to 130 VUSA & Canadai 0.1 mAExposed accessible parts
1.5 k?
i 0.1 mA
110 to 130 V2 k?
Antenna earth terminals
Europe & Australia
220 to 240 V
i 0.1 mAOther terminals
50 k?
Table 1 Leakage current specifications for each region
< GENERAL USE >
AC Line VoltageRegionInsulation Resistance (R)Dielectric StrengthClearance Distance (d), (d')
100 VAC 1 kV 1 minuted, d' 3 mmL
JapanR 1 ML?/500 V DC
100 to 240 VAC 1.5 kV 1 miuted, d' 4 mmL
110 to 130 VUSA & Canada1 M? R 12 M33?/500 V DCAC 1 kV 1 minuted, d' 3.2 mmL
AC 3 kV 1 minute d 4 mmL
110 to 130 V(Class 2)
Europe & AustraliaR 10 ML?/500 V DCd' 8 mm (Power cord)L
200 to 240 VAC 1.5 kV 1 minute
(Class 1) d' 6 mm (Primary wire)L
Table 2 Specifications for each region
AC Line VoltageRegionLoad ZLeakage Current ( i )a, b, c
100 VJapaniL 1 mA rmsExposed accessible parts
1 k?
0.15 ?F
110 to 130 VUSA & CanadaiL 0.5 mA rmsExposed accessible parts
1.5 k?
iL 0.7 mA peak
110 to 130 VAntenna earth terminals2 k?
iL 2 mA dc
Europe & Australia
220 to 240 ViL 0.7 mA peak
Other terminals50 k?
iL 2 mA dc
Table 3 Leakage current specifications for each region
Note: These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.
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ACEC
