6 . 7 . A R A N G E S; Stand By - Philips PM2517E Service Manual

6 8
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l i p r o b e m s w i t h l h e n s l r u m e n l c h e c k
p o w e r s u p p i y I r s t
6 . 1 . 1
N o n p u t v o l a g - a
a u l o r a n g n g
C h e c k i f b a l l e r i e s a r e e m p t y
C h e c k i f 9 V E X T p o w e r s u p p l y
6 . 2 .
D I S P L A Y N o L E D r s g h t e d
O n i y l n d i c a t r o n L E D s a r e l i g h t e d
( + . - , M A N . t ! 4 a , m v a )
L E D [ 4 A N i s n o l l i g h l e d
O n e 7 s e g m e n t L E D i s g h l e d v e r y b r g h l
T w o 7 s e g m e n l L E D s a r e b a n k e d
O n e 7 s e g m e n l L E D , s n c o f r e c t
O n e s e q m e n t o f a L E D r s n c o r r e c t
6 2 . 1 .
62.2.
6 2 3
6 2 4
6 . 2 5
6 2 6
6 2 . 7
6 . 2 8
N o I n p u r v o l t a g e
A u t o r a n g r n g
C h e c k ! f t h e d i s p l a y
6 3 A D C
D r s p a y c o n s l ä n t 0 0 0 0
D s p a y c o n s l a n t 0 l o v e r r a n g e )
D i s p a y w i l l n o t b e c o m e 0 0 0 0
N o a d j u s l m e n i o f d s p a y p o s s b e
U n s l a b l e d r s p l a y
A D C n o l i n € a r
6 . 3 1
6 3 . 2 .
6 3 3
6 3 4
6 3 5
6 3 6
6 3 7
I n p u l v o l l a g e d i r e c l l y
s u p p l r e d t o n p u t o i
A D C
0 ! 9 0 m v . : 9 0 0 n r v
H i : 8 1 0 8 r q h l s i d e
l f a d t u s t m e n t s 4 a n d 5
( C h a p t e r 5 2 ) c a n n o l b e m a c l e
r a n l l e 1 a n d 2 o ( A D C l h e n t h e
e r r o f i s k e l y n l h e A D C
T h e A D C s u s e d
6 4
V ----ATTE.
NUATOF
D l s p l a y c a n n o l b e a d t u s t e d l o z e r o
R a n g e 1 V : a n d 1 0 V :
c a n n o t b e a d J U s l e d
( A d l 3 . 4 . 5 )
R a n g e 1 0 0 V : a n d 1 0 0 0 V :
c a n n o t b e
a d l u s t e d ( A d t . n o 6 7 )
V : r a n q e s n o l l r n e a r
6 4 . 1 .
6 4 2
6 4 3 .
6 4 5 .
n p u t v o r l a g e V A r 0
M a n u a l r a n q r n g
I e r r o r r s o n y n V : l u n t i o n
t h e n t h e e r r o r r s k - o l y r n l h e
6 5 . R A N G I N G N o m a n u a r a n g i n g
N o a u l o r a n g r n g
I n c o r r e C i r a n g r n q ( d e c r m a l p o n l I n c o n e c l )
O s c l a t i n g b e l w e e n l w o V t u r a n g e s
6 5 2
6.5 3
6.5 4
F u n c t o n V : - V - o r k t
I n p u l i n o t m p o r t a n t
M a n u a l i A u t o r a n g r n g
R a n g n g p a r l s b u r l l r n t h e c o n l r o i
o g r c a n d , s u s e d n a i f u n c t r o n s
6 6 . V f u R A N G E S
( R M S
D i s p l a y c o n s i a n l 0 0 0 0
D i s p l a y w i l l n o l b e c o m e z e r o .
V Q / O s h o . l c r r c u r l - a d
A d l u s t m e n t c a n n o l b e m a d e { A d t n o l 0 )
r n q o r r e c r m e a s u r e o v a r u e
6 6 . 2
6 . 6 . 3 .
6 6 . 4 .
I n p ! t v o l t a q e s u p p l r e d
l o v a / O
M a n u a l r a n q r n q
T h e A C / D C c o n v e r t o r s a l s o u s e d
6 . 7 . A R A N G E S
( C u ( e n t
D L s p l a y c o n s t a n t 0 0 0 0
R a n g e 1 0 0 0 A c a n n o t b e a d l u s i e d ( A d l . n o . 1 4 )
R a n g e l 0 M Q c a n n o t b e a d j u s t e d ( A d j . n o . 1 5 )
D e v r a l o n r n t h e m e a s e r e d v a l u e
1 0 Ä , 1 e r a n g e n o i l i n e a r
6 . 7 . 2
6 . 7 . 3 .
6 . 7 . 4
6 . 7 . 5 .
R e s r s t a n c e s u P l l e d
t o v a i o
M a n u a l r a n g n g
The current source 000063
i s a l s o u s e d n t h e f u n c t i o n s
' C a n d
6 . 8 . A - F A N G E S
( S h u n t s )
D i s p i a y c o n s l a n t 0 0 0 0 n r a n g e 1 0 A :
R a n g e 1 0 A : . - c a n n o t b e a d j u s l e d { A d l . n o . 1 2 )
D s p a y c o n s t a n t 0 0 0 0 n r a n g e 1 0 0 m A :
R a n q e 1 0 0 m A * - c a n n o t b e a d j u s l e d
6 . 8 . r .
6 . 8 . 2
6 . 8 . 3 .
6 . 8 . 4
C u n e n t s u p p i e d t o
V a / o a n d l 0 A / 0
C o m b n e d s n u n t A : - . A t u
( S h u n t s )
u r s p a y c o n s t a n l 0 0 0 0
R a n g e 1 0 0 m A a c a n n o l b e a d j u s t e d ( A d j . n o . 1 9 )
6 . 9 . 1 .
6 . 9 . 2 C u r r e n t s u p p l e d t o
V a / o a n d 1 0 A / 0
C o m b r n e d s h u n t A : , A t u
6 1 0 . C R A N G E S
( T e m p . b r a d g e )
D i s p a y c o n s t a n t 0 0 0 0
' C r a n g e c a n n o t
b e a d j u s t e d ( A d j . n o . 1 7 )
6 . 1 0 1
6 . r 0 2
F u n c l r o n ' C
I n p u l i P r o b e o r r e s s l o r
( A d j . n o . r 7 )
c o r n b L n e d t u . ' C a n o {
r a n g e
6 . 1 1
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6 . 1 1 . 1
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(2ka ranse)
STAND BY
(40 sec )
S t a n d b y l i m e i s t o o l o n g
S t a n d b y t i m e i s l o o s h o r t
6 . 1 2 . 1
6.12.2
S T A N D B Y ( 4 0 s e c )
6 . 1 3
D A T A H O L D D a l a h o d d o e s n o t f u n c l i o n 6 . 1 3 . l U s e d a t a h o l d p r o b e
P t ! 4 9 2 6 3 o r i n l e r c o n n e c l
p r o b e i n p u l s o c k e l p o r n t
5 a n d 0 s o c k e t ü