070-3753-01
492/492P Service Vol. 1
9-2-83 Rev
(1) W i t h the f r o n t - p a n e l c o n t r o l s set as d i r e c t e d in p a r t fa,
a c t i v a t e the N A R R O W V i d e o F i l t e r an d c h a n g e T I M E / D I V to 50 ms. A l t e r
n a t e l y t u r n the 19 level a d j u s t m e n t s c l o c k w i s e and c o u n t e r c l o c k w i s e
so every o t h e r p o t e n t i o m e t e r is ful l y c l o c k w i s e and the a d j a c e n t
p o t e n t i o m e t e r is fu l l y c o u n t e r c l o c k w i s e . T he d i s p l a y s h o u l d n o w a p p e a r
as a p e r i o d i c t r i a n g u l a r w a v e f o r m .
(2) A d j u s t the R E F L E V E L so the b a s e l i n e is n e a r full s c reen,
then s w i t c h on the 2 d B / D IV m o d e a nd a d j u s t so the d i s p l a y is m i d
s c r e e n (Fig. 3-38A).
(3) T u r n C o m p e n s a t i o n a d j u s t m e n t R 1 0 6 5 c o u n t e r c l o c k w i s e u n t i l
the d i s p l a y b r e a k s up (Fig. 3 - 3 8 B ).
(4) Now, turn R 1 0 6 5 c l o c k w i s e 1. 5 to 2 t u r n s p a s t t he p o i n t
the d i s p l a y a g a i n b e c o m e s a p e r i o d i c t r i a n g u l a r wa v e f o r m .
(5) T u r n H o r i z a d j u s t m e n t R 1 0 6 9 to c e n t e r the d i s p l a y
(6)
R e t u r n the b a s e l i n e l e v e l e r a d j u s t m e n t s to t h e i r m i d r a n g e
p o s i t i o n for a s t r a i g h t l i n e d isplay, a nd p r o c e e d w i t h the b a s e l i n e
level i n g a l i g n m e n t as p r e v i o u s l y d e s c r i b e d ( p a r t s a t h r o u g h t ).
