Safety Test Requirements - Philips 170X7FB/00 Service Manual

All units that are returned for service or repair must
pass the original manufactures safety tests. Safety
testing requires both Hipot
HI-POT TEST INSTRUCTION
1.Application requirements
1.1 All mains operated products must pass the Hi-Pot
test as
described in this instruction.
1.2 This test must be performed again after the covers
have
been refitted following the repair, inspection or
modification
of the product.
2. Test method
2.1 Connecting conditions
2.1.1 The test specified must be applied between the
parallel-
blade plug of the mainscord and all accessible
metal
parts of the product.
2.1.2 Before carrying out the test, reliable conductive
connections must be ensured and thereafter be
maintained throughout the test period.
2.1.3 The mains switch(es) must be in the "ON" position.
2.2 Test Requirements
All products should be HiPot and Ground Continuity
tested as follows:
Condition HiPot Test for HiPot Test for
products where
the mains input the mains input is
range is Full
range(or 220V
AC)
Test 2820VDC
voltage (2000VAC)
Test time
seconds(min.)
(min.)
Trip set at 100 uA 5 mA
current for Max.
(Tester) limitation; set
at 0.1 uA for
Min. Limitation
Ramp set at 2
time seconds
(Tester)
2.2.1 The minimum test duration for Quality Control
Inspector
must be 1 minute.
2.2.2 The test voltage must be maintained within the
specified
voltage + 5%.
2.2.3 There must be no breakdown during the test.
2.2.4 The grounding blade or pin of mains plug must be
conducted with accessible metal parts.

Safety Test Requirements

and Ground Continuity testing.
Ground Continuity
products where Test requirement
110V AC(USA
type)
1700VDC Test current:
(1200VAC) 25A,AC
Test time:
3 seconds 1 second3
Resistance
required:
<=0.09+Rohm,
R is the
resistance of
the mains cord.
3. Equipments and Connection
3.1. Equipments
For example :
- ChenHwa 9032 PROGRAMMABLE AUTO SAFETY
TESTER
- ChenHwa 510B Digital Grounding Continuity
- ChenHwa 901 (AC Hi-pot test), 902 (AC, DC Hi-
pot test) Withstanding Tester
3.2. Connection
* Turn on the power switch of monitor before Hipot and
Ground Continuity testing.
Clip
(ChenHwa 9032 tester)
Connect the "video cable"
or "grounding screw"
to the CLIP on your tester.
Connect the power cord
to the monitor.
4. Recording
Hipot and Ground Continuity testing records have to be
kept for a period of 10 years.
190X7&170X7 LCD
Go to cover page
Clip
Video cable
Grounding screw
Power outlet
(Rear view of monitor)
113