Philips 202P70/00, Service Manual

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202P7 CRT 87
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.A pp li cat i o n re qui re m e n t s
Te s t m et h o d
1.1 All m a ins operate d pro du ct s mus t pa ss t h e Hi- Pot te s t a s
d e s cr ib e d in t his ins tr u ct i o n.
1. 2 T his 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 T h 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 B e 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 T h 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 Te s t Re qui re m e n t s
All pro du ct s sh o uld b e Hi Pot a nd Gro und Co n t inui t y te s te d a s
f o ll o ws:
Te s t 2820 VD C 1 700 VD C Te s t c u rre n t :
vo l tage ( 2000 VA C ) (1 200 VA C ) 2 5A,A C
Te s t t im e :
Te s t t im e 3 s eco nds 1 s eco nd 3 s eco nds(min.)
(min.) Re sis ta n ce
re qui re d:
Tr i p s et at 1 00 uA 5 mA <= 0 . 0 9+ Ro hm,
c u rre n t f or M a x. R is t h e
( Te 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. Limi tat i o n
Ra m p s et at 2
t im e s eco nds
( Te s ter )
2.
Co ndi t i o n Hi Pot Te s t f or Hi Pot Te s t f or Gro und Co n t inui t y
pro du ct s wh ere pro du ct s wh ere Te 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 11 0 V A C (USA
ra n ge ( or 220 V t y pe )
A C )
2 . 2 .1 T h 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 T h 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 T h 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 T h 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 0 3 2 PR O GR AMMABLE AU T O SAFE T Y
T ES T E R
- C h e nHw a 51 0 B Di g i ta l Gro undin g Co n t inui t y Te s ter
- C h e nHw a 9 0 1 (A C Hi- pot te s t ), 9 02 (A C , D C Hi- pot te s t )
Wi t hs ta ndin g Te 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 1 0 y ear s.
* T u 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
C li p
S a f et y Te s t Re qui re m e n t s