• 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 followin!l tests and confirm the specified values in order to verify compli
ance with safety standards.
1. Insulation resistance test
Confirm the specified insulation resistance or greater between power cord plug prongs and
externally exposed parts of the set (RF terminals, antenna terminals, video and audio input
and output terminals, microphone jacks, earphone jacks, etc.). See table 1 below.
2. Dielectric strength test
Confirm specified dielectric strength or greater between power cord plug prongs 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') be
tween soldered terminals, and between terminals and surrounding metallic parts. See table 1
below.
d
l.d�"'
�
Chassis
1--,
,...,µ.
_
__,Wtf',1c-,
-----.
1/J...
,?l'h,_ Power cord,
4. Leakage current test
4' ,,. �
primary wire
Fig. 8
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
input and output terminals, microphone jacks, earphone jacks, etc.).
Measuring Method : (Power ON)
Insert load Z between earth ground/power cord plug prongs and externally exposed accessi
ble parts. Use an AC voltmeter to measure across both terminals of load Z. See figure 9 and
following table 2.
5. Grounding (Class I model only)
Confirm specified or lower grounding impedance between 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 milli ohm meter between earth pin in AC inlet and exposed accessible parts. See figure 10 and grounding specifications.
AC inlet
O O �
.,..-----
1--Exposed accessible part
0 0 �
Grounding Specifications
Region
Grounding Impedance (Z)
I
Earth pin
�---OOf----
Milli ohm meter
Fig.10
AC Line Voltage
100 V
100 to 240 V
110 to 130 V
110 to 130 V
200 to 240 V
AC Line Voltage
100 V
110 to 130 V
110 to 130 V
220 to 240 V
Region
Japan
USA & Canada
Europe & Australia
Region
Japan
USA & Canada
Europe & Australia
Table2
USA & Canada
Z �
0.1 ohm
Europe & Australia
Z :;;
0.5 ohm
Insulation Resistance (RI
Dielectric Strength
Clearance Distance (di, (d'I
R � 1 MQ/500 V DC
1 MO � R � 12 MQ/500 V DC
R � 10 MQ/500 V DC
AC 1 kV 1 minute
AC 1.5 kV 1 miute
AC 1 kV 1 minute
AC 3 kV 1 minute
(Class II)
AC 1.5 kV 1 minute
(Class I)
Table 1 Specifications for each region
LoadZ
o--A./V'v----o
1 kn
0.15
�
-o
1.5kn.
o--A./V'v----o
2kn
o--A./V'v----o
50 kn
Leakage Current (i)
i
i
i
i
i
i
� 1 mA rms
:;; 0.5 mA rms
:;; 0.7 mA peak
� 2 mA dc
:;; 0.7 mA peak
:;; 2 mA dc
Leakage current specifications for each region
d, d' � 3 mm
d, d' � 4 mm
d, d' � 3.2 mm
d � 4 mm
d' � 8 mm (Power cord)
d' � 6 mm (Primary wire)
a, b, C
Exposed accessible parts
Exposed accessible parts
Antenna earth terminals
Other terminals
Note: These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.
II
S40888-01
Summary of Contents for HR-S7600EU
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