ESI VideoBridge 2150, Service Manual

Page: 199 / 332

WARNING
R E M O V A L O F INSTRUMENT COVERS MAY CONS T I TUTE AN EL ECTR I CAL
H A Z AR D
AND SHOULD BE ACCOMP L I S H E D BY QUAL I F I ED SERV I C E
PERSONNEL ONLY .
T H E B R I GHTNESS CONTROL LOCATED AT T H E REAR OF THE I N STRUMENT
C A N B E EAS I L Y D I S TURBED WHEN WRAPP I NG THE POWE R CORD ON THE
REAR F E ET .
VER I FY T H E CORRECT SET T I NG OF T H I S CONTROL BEFORE
CONT I N U I NG WITH ADD I T I ONAL ADJ USTME N T S .
I F T H E I NSTRUMENT I S PLACED W I T H I N A STRONG MAGNE T I C F I E L D ,
T H E V I DEO D I SPLAY MAY BECOME PERMANENTLY OFFS E T . I F T H I S
CON D I T I ON OCCURS , D EGAUSS ING THE V I DEOBRI DGE C A S E I S REQU I RE D
TO RETURN THE DI SPLAY T O NORMAL OPERAT I ON .
T H I S MUST BE DONE
BEFORE CON T I NU I NG W I TH ADD I T I ONAL A DJUSTMENTS .
Equ i pme n t R e q u i re d :
F l a t b l a d e pl a s t i c t r i m t o o l o r " tweake r " ( s t eps 2 , 3 , 5 , 6 )
He x h e a d p l a s t i c t r i m t o o l ( h o r i z o n ta l w i d t h , s te p 4 )
V i d e o Ad j u s tm e n t s : ( S e e a l s o T a b l e 3 - 3 )
S T E P 1 . B R I G H TN E S S Con t ro l - i s a k n ob l o c a t e d on t he i n s t r um e n t ' s
r e a r pa n e l a nd c a n be a d j u s t e d by ha nd . B r i g h t n e s s r a n g e s
f rom b l a c k ( no d i sp l a y ) t o fu l l b r i g h t ne s s .
To m a k e t h e f o l l ow i ng a d j u s tme n t s , r e m o v e t h e o u t e r b l u e c ov e r p e r
i n s t r u c t i on s g i ve n i n Se c t i o n 4 . 4 . 2 . 2 Remova l / Re p l a c e m e n t P r o c ed u re .
T h e f o l l ow i n g a d j u s tmen t s a r e a va i l a b l e t h r o u g h t h e s i de o f t h e CRT
E n c l o su r e Cov e r . ( Re f e r t o F i g u r e 3 - 2 1 f o r t r i mm e r l o ca t i on s . )
3 - 34
e / s / i 2 1 5 0 /2 1 6 0 5 /8 5