Acer X193 Manual de servicio - Página 8

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1. Exploded Diagram

1.4.5.5 Defect 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

D e f e c t s

B r i g h t S p o t s / L i n e s

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

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 L i n e

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 .

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

D i m L i n e

( 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 .

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

C r o s s L i n e s O f f

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 ) .

1.4.5.6 Smudges, 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 .

1.4.5.7 Other 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.

1.4.5.8 LCD 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 .

Average Diameter smaller of

(L+W)/2 or L/20+2W

< 0.1mm

0.1 mm ~ 0.3 mm

0.31 mm ~ 0.5 mm

0.51 mm ~ 1.25 mm

1.26 mm ~ 2.5 mm

2.51 mm ~ 3.75 mm

Greater than 3.75 mm

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. Product Specification (continued)

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

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

Acceptable Number

Minimum Separation

Non countable

N / A

15 mm

25.4 mm

NONE

Not applicable

1.5 Optical Characteristics

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

Inspection Spec.

p a t t e r n s .

ACER X193HQ

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