JVC TK-C600 - Page 4

e 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
following
tests
and
confirm
the
specified
values
in
order
to
verify
compliance
with
safety
standards.
. Insulation resistance test
Confirm
the
specified
insulation
resistance
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
terminals, microphone jacks, earphone jacks, etc.). See table 1 below.
. 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.
. Clearance distance
When
replacing
primary
circuit
components,
confirm
specified
clearance
distance
(d),
(d’)
between
soldered
terminals,
and
between
terminals
and
surrounding
metallic
parts.
See
table
1
below.
d*
Chassis
Power cord,
primary wire
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
input
and
output
terminals,
microphone
jacks,
earphone
jacks,
etc.).
Externally
Measuring
Method:
(Power
ON)
exposed
Lo
Insert
load
Z
between
earth
ground/power
cord
plug
prongs
and
externally
exposed
accessible
parts.
accessible
part
Use
an
AC
voltmeter
to
measure
across
both
terminals
of
load
Z.
See
figure
9
and
following
table
2.
. 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.
Grounding Specifications
Grounding Impedance (Z)
AC inlet Exposed accessible part
USA & Canada
Europe & Australia
Earth pin
Milli ohm meter
Fig. 10
Region
aaa ee Raa |
Clearance Distance (d), (d’)
AC
Line
Voltage
Insulation
Resistance
(R)
Dielectric
Strength
100 V
100 to 240 V
Japan
R21 M&/500 V DC
Set bs
AC 1 kV 1 minute
d,d‘'2 3mm
AC 1.5 kV 1 minute a}
d,d’2 4mm
110 to 130 V
USA & Canada
pe shh
AC 900 V 1 minute
d,d’2 3.2mm
is
AC 3 kV 1 minute
d 24mm
110 to 130 V
200 to 240 V
(Class II}
AC 1.5 kV 1 minute
(Class I)
R210 MQ /S00 V DC d’ 2 8 mm (Power cord)
d’ 2 6mm (Primary wire)
Europe & Australia
—
Table 1 Specifications for each region
ee
AC
Line
Voltage
Region
Load
Z
Leakage
Current
(i)
= Japan Ao
1kQ
USA & Canada
a,b,c
100
V
i
$1mArms
Exposed
accessible
parts
0.15
His
fit fe
1.5k2
oO
2k
110
to
130
V
i
<0.5
mArms
Exposed
accessible
parts
een
i S$ 0.7 mA peak
iS 2mAdc
i $0.7 mA peak
i<2mAdc
Antenna earth terminals
110 to 130 V
220 to 240 V
Europe & Australia
0
50 kil
Other terminals
lh
Table 2. 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.