ViewSonic VG700b User Manual - Page 15
Troubleshooting - power supply
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Troubleshooting No power • M a k e s u re p o w e r b u tto n ( o r s w itc h ) is O N . • M a k e s u r e A / C p o w e r c o r d i s s e c u r e l y c o n n e c t e d t o t h e L C D . d i s l a y • P lu g a n o th e r e le c tric a l d e v ic e ( lik e a ra d io ) in to th e p o w e r o u tle t to v e rify th a t th e o u tle t is s u p p ly in g p ro p e r v o lta g e. Power is ON but no screen image • M a k e s u r e t h e v i d e o c a b l e s u p p l i e d w i t h t h e L C D d islay i s t i g h t l y s e c u r e d t o th e v i d e o o u tp u t p o r t o n th e b a c k o f th e c o m p u te r. I f th e o th e r e n d o f th e v i d e o c a b l e i s n o t a t t a c h e d p e r m a n e n t l y t o t h e L C D , d is la y t i g h t l y s e c u r e i t t o t h e . L C D d is la y • A d j u s t b r i g h t n e s s a n d c o n t r a s t. • I f y o u a r e u s i n g a n M a c i n to s h o l d e r th a n G 3 , y o u n e e d a M a c i n to s h a d a p te r. Wrong or abnormal colors • If a n y c o lo rs ( re d , g re e n , o r b lu e ) a re m is s in g , c h e c k th e v id e o c a b le to m a k e s u re it is s e c u re ly c o n n e c te d . L o o s e o r b ro k e n p in s in th e c a b le c o n n e c to r c o u ld c a u s e a n im p ro p e r c o n n e c tio n . • C o n n e c t t h e t o L C D d is la y a n o t h e r c o m p u t e r . • If y o u h a v e a n o ld e r g ra p h ic s c a rd , c o n ta c t V ie w S o n ic ®fo r a n o n - D D C a d a p te r. Control buttons do not work • P re s s o n ly o n e b u tto n a t a tim e. ViewSonic VG700b 14