Safety Check after Servicing
Examine the area surrounding the repaired location forChassis or Secondary Conductor
damage or deterioration. Observe that screws, parts,
and wires have been returned to their original posi-Primary Circuit Terminals
tions. Afterwards, do the following tests and confirm
the specified values to verify compliance with safetyd'd
standards.
1. Clearance Distance
When replacing primary circuit components, confirm
specified clearance distance (d) and (d?) between sol-
dered terminals, and between terminals and surround-
ing metallic parts. (See Fig. 1)
Table 1 : Ratings for selected area
AC Line VoltageClearance Distance (d) (d?)
Fig. 1
e 3mm(d)
230 - 240 V
e 6 mm(d?)
Exposed Accessible Part
Note: This table is unofficial and for reference only.
Be sure to confirm the precise values.
2. Leakage Current Test
Confirm the specified (or lower) leakage currentAC Voltmeter
Z
between B (earth ground, power cord plug prongs)(High Impedance)
and externally exposed accessible parts (RF termi-
nals, antenna terminals, video and audio input and
output terminals, microphone jacks, earphone jacks,
etc.) is lower than or equal to the specified value in the
table below.
One side of
B
Measuring Method (Power ON) :Power Cord Plug Prongs
Insert load Z between B (earth ground, power cordFig. 2
plug prongs) and exposed accessible parts. Use an
AC voltmeter to measure across the terminals of load
Z. See Fig. 2 and the following table.
Table 2: Leakage current ratings for selected areas
One side of power cord plug
AC Line VoltageLoad ZLeakage Current (i)
prongs (B) to:
2k& RES.
id0.7mA AC PeakRF or
Connected in
id2mA DCAntenna terminals
parallel
230 - 240 V
50k& RES.
id0.7mA AC Peak
Connected in A/V Input, Output
id2mA DC
parallel
Note: This table is unofficial and for reference only. Be sure to confirm the precise values.
1-2-2U29PSFP |
ACEC
