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• Safety 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 fol lowing tests and confirm the specified values in order to verify compliance with safety
standards.
1.
Insulation resistance test
Confirm the specified insulation resista nce or greater between power cord plug prongs and exter-
nally exposed parts of the set (RF terminals, antenna terminals, video and audio input and output
termina ls, microphone jacks, earphone jacks, etc . ) . See table 1 below.
2.
Dielectric strength test
Confirm specified dielectric strength or greater between power cord plug p rongs and exposed
accessible parts of the set (RF terminals, antenna terminals, video and audio input and output
terminals, microphone jacks, earphone jacks, etc . ) . See table 1 below.
3.
Clearance distance
When replacing primary circuit components, confirm specified clearance distance (d ), (d') between
soldered terminals, and between terminals and surrounding meta llic parts. See table 1 below.
4.
Leakage current test
Confirm specified or lower lea kage current between earth ground/power cord plug prongs and
externally exposed accessible parts (R F terminals, antenna termina ls, video and audio input and
output terminals, microphone jacks, earphone jacks, etc . ) .
0
(Power
N )
Measuring Method:
Z
I nsert load
between earth ground/power cord plug prongs and externally exposed accessible parts.
5 .
Use an AC voltmeter to measure across both terminals of load
I
Grounding (Class
model only)
Confirm specified or lower grounding impedance betwee n earth pin in AC inlet and externally
exposed accessible parts (Video in, Video out, Audio in, Audio out or Fixing screw etc . ) .
Measuring Method:
Connect mil Ii ohm meter between earth pin in AC inlet and exposed accessible parts. See figure 1 0 and grounding specifications.
AC in let
00
Earth pin
Milli ohm meter
Fig.
·-
Line Voltage
AC
v
100
100 to 240 V
V
110 to 1 30
V
1 10 to 1 30
200 to 240 V
Line Voltage
AC
v
100
V
110 to 1 30
V
1 1 0 to 130
220 to 240 V
Note: These tables are unofficial and for reference only. Be sure to confirm the precise values for your particu lar country and locality.
Z.
000
Exposed accessible part
10
-
Region
Insulation Resistance (R)
R�1 M.11/500 V DC
Japan
&
USA
Canada
&
R� 10 M.11 /500 V DC
Europe
Australia
1
Specifications for each region
Table
Load
Region
o--'Vl/'v- -0
Japan
�
0.15
&
USA
Canada
o--'Vl/'v- -0
&
Europe
Australia
o--'Vl/'v- -0
Leakage current specifications for each region
Table
2
Fig. 8
See figure 9 and following table 2 .
Grounding Specifications
Region
&
USA
Canada
&
Europe
Australia
Dielectric Strength
1
AC
kV 1 minute
AC 1 .5 kV 1 minute
-
AC 900 V 1 minute
AC 3 kV 1 minute
(Class
AC 1 .5 kV 1 minute
Z
Leakage
Current
1
2:
1 kll
i
mA rms
i 2:
1.5 kl1
0.5 mA rms
2:
i
0.7 mA peak
2 kll
2:
i
2 mA de
2:
i
0.7 mA peak
50 kl!
2:
i
2 mA de
II
d
Chassis
Power cord,
primary wire
@
:
:
E
exposed
9
V
�-
--�
accessible part
Fig.
(Z)
G rounding I mpedance
z
;£
0 . 1 ohm
z
;£
0.5 ohm
Clearance Distance (d), (d')
d, d'� 3 mm
d, d'� 4 mm
d,d' � 3.2 mm
II)
d �4 mm
d' � 8 mm (Power cord)
I)
d' �
6
mm (Primary wire)
(Class
(i)
a,
b, c
Exposed accessible parts
Exposed accessible parts
Antenna earth terminals
Other terminals
ti
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