XXII. HIGH POT TESTING
1. Short the L- pole and N- pole of AC line cord.
2. Switch on the power Switch of the TV set.
3. Connect the High Pot Tester ( - ) to L and N
Pole, ( + ) to the METAL PART of CABINET.
CONDITION
TEST STANDARN TEST STANDARD
SAFETY STD. FOR PRODUCTION
VDE.SAA 3.0KV 10mA / 1 MIN
>3.5KV<10mA/ >10 SEC.
UL 1.0KV 5mA / 1 MIN
>1.25KV< 5mA/ >1 SEC.
Remark :
(1). If no other specity, the strength of input signal
should be 70dB
+10dB.
(2). The High Pot Tester can have
< +5% tolerance.
DISTRICT
CENTRE
POSITION
(mm)
LIMIT
(mm)
SCANNING
SIZE (%)
SCANNING
SIZE
LIMIT (%)
GROUP A
GROUP B
GROUP C
-2
0
+3
-5 ~ -1
-2 ~ +2
0 ~ +5
90
90
90
88 ~ 94
88 ~ 94
88 ~ 94
REMARK : 1. Group A : AUSTRALIA, NEW ZEALAND, TAHITI, SOUTH,AMERICA.
2. Group B : HONG KONG, CHINA, AMERICA, CANADA, MALAYSIA,
MEXICO.
3 Group C : ENGLAND, ITALY, GERMANY, RUSSIA, SWITZERLAND,
JUGOSLAVIA, SPANISH.
* If the above countries are not include, please consult to
Engineering Dept.
mm -5 -4 -3 -2 -1 0 1 2 3 4 5 mm
LEFT RIGHT
CENTRE OF
THE SCREEN
*CRT MUST
FACE TO EAST
XXIII. PICTURE CERTER ALIGNMENT
SM-74PM P.10