JVC HR-J6009UM, Service Manual

  v

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 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.

4. 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.).

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 

1 

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.

d '

d

Chassis

Power cord,
primary wire

Region

USA & Canada

Europe & Australia

Grounding Impedance (Z)

Z      0.1 ohm

Z      0.5 ohm

≤
≤

AC inlet

Earth pin

Exposed accessible part

Milli ohm meter

Grounding Specifications

Fig. 10

a

b

c

V

Externally
exposed
accessible part

Z

Fig. 9

Fig. 8

Clearance Distance (d), (d')

d, d'       3 mm

d, d'       4 mm

d, d'       3.2 mm

1 M

Ω

    R    12 M

Ω

/500 V DC

Dielectric Strength

AC 1 kV 1 minute

AC 1.5 kV 1 miute

AC 1 kV 1 minute

AC Line Voltage

100 V

100 to 240 V

110 to 130 V

110 to 130 V

200 to 240 V

Japan

USA & Canada

Europe & Australia

R    10 M

Ω

/500 V DC

Region

Insulation Resistance (R)

R    1 M

Ω

/500 V DC

≤

≤

≥

≥

≤

≤

≤

≤

≤

≤

AC 3 kV 1 minute

(Class 

2

)

AC 1.5 kV 1 minute

(Class 

1

)

 d      4 mm
d'      8 mm (Power cord)
d'      6 mm (Primary wire)

Table 1

   Specifications for each region

a, b, c

Leakage Current (i)

AC Line Voltage

100 V

110 to 130 V

110 to 130 V

220 to 240 V

Japan

USA & Canada

i

1 mA rms

Exposed accessible parts

Exposed accessible parts

Antenna earth terminals

Other terminals

i

0.5 mA rms

i

0.7 mA peak

i

2 mA dc

i

0.7 mA peak

i

2 mA dc

Europe & Australia

Region

Load Z

≤

≤
≤

≤
≤

≤

1 k

Ω

2 k

Ω

1.5 k

Ω

0.15 

µ

F

50 k

Ω

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.

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S40888-01