Acer MB243WABNS service manual Diameter, they must be at least 15mm apart

1. Product Specification (continued)

ACER G24

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1.4.5.2Display Degradation

Over the life of the product , variation of the parameters specified in Panel specification shall be maintained within reasonable limits.The panel must not exhibit any significant defects while in operation ( excluding the CCFL operation ).This does not in any way change the warranty given by the panel manufacturer .

1.4.5.3Light Leakage

Except for the active display area , there shall be no light emission visible from any angle from any other part of the display . For this test , the ambient illumination must follow panel's specification.

1.4.5.4Allowable Defects

No cosmetic defects are allowed except those specified below.The conditions of visual inspections are as follows For 24W Series.

■Viewing distance is to be approximately 35-50cm

■Ambient illumination is to be 300 to 700 lux.

■Viewing angle shall be at 90 degree.

■Defects not apparent within one minute shall be ignored.

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1.4.5.6Smudges, Streaks and Smears

When viewing the panel oriented so as to maximize reflected light , there shall be no visible smudging , streaking, smearing or other nonuniformity from contaminants ,fingerprints,or defects in any of the visible surfaces. This is independent of whether the unit is operating or off .

1.4.5.7Other Defects

Undefined defects that are considered to be rejectable by Lite–On will be reviewed by Lite-On as they become apparent. These panels will be referred to the Lite - On Corporate / Manufacturer Purchasing Agreement for disposition.

1.4.5.8LCD Inspection

Put LCD panel on inspection table and illuminate the panel with a daylight fluorescent lamp located above the panel surface such that the luminance at the LCD panel is between 1000 lux and 1500 lux .Defect limits are given in Table 4 .

1.4.5.5Defect Terminology

Table 3 gives the descriptive terms used in classifying defects.

	S p o t s o r l i n e s t h a t a p p e a r d a r k i n t h e d i s p l a y p a t t e r n s a n d a r e
	u s u a l l y t h e r e s u l t o f c o n t a m i n a t i o n . D e f e c t s d o n o t v a r y i n
D a r k / S p o t s / L i n e s	s i z e o r i n t e n s i t y ( c o n t r a s t ) w h e n c o n t r a s t v o l t a g e i s v a r i e d .
	C o n t r a s t v a r i a t i o n c a n b e a c h i e v e d t h r o u g h t h e u s e o f v a r y i n g
	g r a y s h a d e p a t t e r n s .
	S p o t s o r l i n e s t h a t a p p e a r l i g h t i n t h e d i s p l a y p a t t e r n s .
B r i g h t S p o t s / L i n e s	D e f e c t s d o n o t v a r y i n s i z e o r i n t e n s i t y ( c o n t r a s t ) w h e n
	c o n t r a s t v o l t a g e i s v a r i e d . C o n t r a s t v a r i a t i o n c a n b e a c h i e v e d
	t h r o u g h t h e u s e o f v a r y i n g g r a y s h a d e p a t t e r n s .
	W h e n t h e u n i t l i g h t s , l i n e s a p p e a r l i g h t ( w h i t e ) w i t h d i s p l a y
P o l a r i z e r S c r a t c h	p a t t e r n s d a r k a n d d o n o t v a r y i n s i z e . P h y s i c a l d a m a g e t o t h e
	p o l a r i z e r t h a t d o e s n o t d a m a g e t h e g l a s s
	W h e n t h e u n i t l i g h t s , s p o t s a p p e a r l i g h t ( w h i t e ) w i t h d i s p l a y
P o l a r i z e r D e n t	p a t t e r n s d a r k a n d d o n o t v a r y i n s i z e . P h y s i c a l d a m a g e t o t h e
	p o l a r i z e r t h a t d o e s n o t d a m a g e t h e g l a s s .
	H o r i z o n t a l o r d i a g o n a l l i n e s t h a t a p p e a r g r a y w i t h t h e d i s p l a y
R u b b i n g L i n e	p a t t e r n s d a r k a n d m a y h a v e r e s u l t e d f r o m a n “ o u t o f c o n t r o l ”
	r u b b i n g p r o c e s s o n t h e p o l y i m i d e o r “ w a v e s ” o n t h e B E F s o r
	p r i s m s h e e t s .
N e w t o n R i n g	T h e “ r a i n b o w ” e f f e c t c a u s e d b y n o n - u n i f o r m c e l l t h i c k n e s s .
	W h e n t h e u n i t l i g h t s , v a r i a t i o n / n o n – u n i f o r m i t y
M o t t l i n g	( s p l o t c h i n e s s ) a p p e a r s l i g h t ( w h i t e ) w i t h t h e d i s p l a y a n d
	m i g h t v a r y i n s i z e .
D i m L i n e	W h e n t h e u n i t l i g h t s , l i n e ( s ) i n t h e m o n i t o r ( v e r t i c a l ) o r m a j o r
	( h o r i z o n t a l ) a x i s a p p e a r d i m , b u t n o t c o m p l e t e l y o n o r o f f .
C r o s s L i n e s O f f	W h e n t h e u n i t l i g h t s , l i n e s i n b o t h t h e m i n o r a n d m a j o r a x i s
	d o n o t a p p e a r .
B r i g h t / D a r k D o t	A s u b – p i x e l ( R , G , B d o t ) s t u c k o f f / o n ( e l e c t r i c a l ) .

Average Diameter smaller of	Acceptable Number	Minimum Separation
(L+W)/2 or L/20+2W
< 0.1mm	Non countable	N / A
0.1 mm ~ 0.3 mm	10	15 mm
0.31 mm ~ 0.5 mm	10	15 mm
0.51 mm ~ 1.25 mm	5	15 mm
1.26 mm ~ 2.5 mm	3	25.4 mm
2.51 mm ~ 3.75 mm	3	25.4 mm
Greater than 3.75 mm	NONE	Not applicable

Note : Allowable distance between spots of two sizes is the minimum separation

number for the smaller spot. Therefore, if there are two spots, 1.30mm and 0.4mm

in diameter, they must be at least 15mm apart.

1.5Optical Characteristics

Depends on the LCD supplier's spec. Details refer to QA Inspection Spec.