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

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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.

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Contents Acer Go to cover Scope Sync Signal Loading Video Input Signals Function LED Color Factory Preset Video Timings Digital Inputs Panel Electrical Diameter, they must be at least 15mm apart Main OSD Menu Outline Description for control function OSD Manu Exploded Diagram Packing Exploded Diagram Exploded Diagram Product Exploded Diagram Assembly and Disassembly Procedures S10 S11 S12 S22 Open the carton with a proper tool S10 S15 S18 Go to cover Proceed to 5.3 Checking the backlight unit section Troubleshooting Troubleshooting Abnormal Screen Troubleshooting Abnormal OSM display OSD Adjusment Problem Failure Point Confirm the output of serial Checking the control circuit of vertical sync pulse Troubleshooting Checking the resolution change IC movement Between I301, I303 Troubleshooting Checking the inverter board circuit Failure Point I314 was damaged Firmware Upgrade Process Go to cover Cedid Go to cover PCB No PCB No P01 For Power Saving Control ACERLCDG24SCHEMATICSINTERFACEBDMCU and Function KEY Dsub ACERLCDG24SCHEMATICSINTERFACEBDHDMI and DVI Input 123 ACERLCDG24SCHEMATICSINTERFACEBDSDRAM ACERLCDG24SCHEMATICSINTERFACEBDUSB and CAM/MIC Output Hdmi Audio CODECdeleted for P243W Hdmi model ACERLCDG24SCHEMATICSINVERTER BD Menu KEY Power Board TOP Silk ACERLCDG24LAYOUTSINTERFACE Board ACERLCDG24LAYOUTSFUNCTION KEY Board ACERLCDG24LAYOUTSINVERTER Board