Philips 150B6CB/00, Service Manual

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34
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170B6 LCD
All uni t s t h at are ret u r n e d f or s erv i ce or repa i r mus t pa ss t h e
or i g in a l m a nuf act u re s s a f et y te s t s. S a f et y te s t in g re qui re s b ot h
a nd te s t in g .
Hipot Ground Continuity
HI-POT TEST INSTRUCTION
1.Application requirements
2.
1 . 1 All m a ins operate d pro du ct s mus t pa ss t h e Hi-P ot te s t a s
d e s cr ib e d in t his ins tr u ct i o n.
1 .2 This te s t mus t b e per f or m e d aga in a f ter t h e cover s h ave
b ee n re fi tte d f o ll o win g t h e repa i r , ins pect i o n or m o difi cat i o n
o f t h e pro du ct .
2. 1 Co nn ect in g co ndi t i o ns
2. 1 . 1 Th e te s t s pec ifi e d mus t b e app li e d b et w ee n t h e para ll e l-
bl a d e p lu g o f t h e m a ins cor d a nd a ll acce ssibl e m eta l
part s o f t h e pro du ct .
2. 1 .2 Be f ore carr yin g o u t t h e te s t , re li a bl e co ndu ct i ve
co nn ect i o ns mus t b e e nsu re d a nd t h erea f ter b e
m a in ta in e d t h ro u g h o u t t h e te s t per i o d.
2. 1 . 3 Th e m a ins swi tc h( e s) mus t b e in t h e "ON" po si t i o n.
2.2 T e s t R e qui re m e n t s
All pro du ct s sh o uld b e HiP ot a nd Gro und Co n t inui t y te s te d a s
f o ll o ws:
T e s t 282 0 V DC 1700 V DC T e s t c u rre n t :
vo l tage (2 000 VA C ) ( 1 2 00 VA C ) 25A,A C
T e s t t im e :
T e s t t im e 3 s eco nds 1 s eco nd 3 s eco nds(min.)
(min.) R e sis ta n ce
re qui re d:
T r i p s et at 100 uA 5 mA <= 0 . 0 9+R o hm,
c u rre n t f or M a x. R is t h e
(T e s ter ) limi tat i o n; s et re sis ta n ce o f
at 0 . 1 uA f or t h e m a ins cor d.
Min. L imi tat i o n
R a m p s et at 2
t im e s eco nds
(T e s ter )
T e s t m et h o d
Co ndi t i o n HiP ot T e s t f or HiP ot T e s t f or Gro und Co n t inui t y
pro du ct s wh ere pro du ct s wh ere T e s t re qui re m e n t
t h e m a ins in p u t t h e m a ins in p u t is
ra n ge is Full 110 V A C (USA
ra n ge ( or 22 0 V t y pe )
A C )
2.2. 1 Th e minimum te s t du rat i o n f or Qu a li t y Co n tro l Ins pector
mus t b e 1 minu te .
2.2.2 Th e te s t vo l tage mus t b e m a in ta in e d wi t hin t h e s pec ifi e d
vo l tage + 5%.
2.2. 3 Th ere mus t b e n o b rea kd o wn du r in g t h e te s t .
2.2. 4 Th e gro undin g bl a d e or p in o f m a ins p lu g mus t b e
co ndu cte d wi t h acce ssibl e m eta l part s.
3.
Equi p m e n t s a nd Co nn ect i o n
3 . 1 . Equi p m e n t s
F or e x a m p l e :
- C h e nHw a 9 03 2 PRO G RAMMA BL E AUTO SAFETY
TESTER
- C h e nHw a 5 10B D i g i ta l Gro undin g Co n t inui t y T e s ter
- C h e nHw a 9 01 (A C Hi- pot te s t ), 9 0 2 (A C , DC Hi- pot te s t )
Wi t hs ta ndin g T e s ter
3 .2. Co nn ect i o n
4.
Recording
Hi pot a nd Gro und Co n t inui t y te s t in g recor ds h ave to b e k ept
f or a per i o d o f 10 y ear s.
* Tu r n o n t h e po w er swi tc h o f m o ni tor b e f ore Hi pot a nd
Gro und Co n t inui t y te s t in g .
Connect the "video cable"
or "grounding screw"
to the CLIP on your tester.
Video cable
(Rear view of monitor)
Connect the power cord
to the monitor.
Grounding screw
Power outlet
(ChenHwa 9032 tester)
C li p
Clip
S a f et y T e s t R e qui re m e n t s