Acer X223W Service manual

ACER

ACER_LCD_X223W_SM072301V1

Service

Model ID: R22ANUW-M1

Service Manual

Table of Contents

Important Safety Notice------------------------------------------------------------------------------------- 01

01. Product Specification--------------------------------------------------------------------------------- 02

02. OSD Menu-----------------------------------------------------------------------------------------------08

03. Exploded Diagram

04. Assembly and Disassembly Procedures-----------------------------------------------------------12

05.

Troubleshooting----------------------------------------------------------------------------------------20

06. Schematics and Layouts------------------------------------------------------------------------------ 30

AppendixI:User’s Manual

Appendix II: Quick Setup Guide

Appendix III : Spare Parts Llist

Any person attempting to service this chassis must familarize with the chassis and be aware of the

necessary safety precautions to be used when serving electronic equipment

------------------------------------------------------------------------------------- 10

Safety Notice

containing high voltage.

23th-Jul-2007

Product Anouncement:

Important Safety Notice

ACER X223W

Go to cover page

This product is certificated to meet RoHS Directive and

Lead-Free produced definition. Using approved critical

components only is recommended when the situation

to replace defective parts. Vender assumes no liability

express or implied, arising out of any unauthorized

modification of design or replacing non-RoHS parts.

Service providers assume all liability.

Qualified Repairability:

Proper service and repair is important to the safe,

reliable operation of all series products. The service

providers recommended by vender should being

aware of notices listed in this service manual in order

to minimize the risk of personal injury when perform

service procedures. Furtermore, the possibile existed

improper repairing method may damage equipment or

Using Lead-Free solder to well mounted the parts.!

! The fusion point of Lead-Free solder requested in the

degree of 220 C.°

products. It is recommended that service engineers

should have repairing knowledge, experience, as well

as appropriate product training per new model before

performing the service procedures.

NOTICE:

To avoid electrical shocks, the products should be

connect to an authorized power cord, and turn off the

master power switch each time before removing the

AC power cord.

To prevent the product away from water or explosed

in extremely high humility environment.

To ensure the continued reliability of this product,

use only original manufacturer’s specified parts.

To ensure following safty repairing behavior, put the

replaced part on the components side of PWBA, not

solder side.

To ensure using a proper screwdriver, follow the

torque and force listed in assembly and disassembly

procedures to screw and unscrew screws.

ACER X223W

Go to cover page

1. Product Specification

1.1 SCOPE

This document defines the design and performance

requirements for an 20/22W inch diagonal , flat panel

monitor .The display element shall be a WSXGA

(1680x1050) resolution TFT-LCD (Thin Film Transistor

Liquid Crystal Display).16.7M color(RGB 6bits+FRC)

images are displayed on the panel.Video input signals are

analog RGB (0.7Vp-p). When the systemis powered-on ,

previously stored screen parameters for a pre-defined

mode will be recalled if the operating mode is one of stored

in memory( 19 factory , 9 users timing ).This monitor

operates normal by non-interlaced mode. DDC (Display

Data Channel) function is DDC2Bi compliance Power

saving function complies with the DPMS (Display Power

Management Signaling) standard.

1.2 GENERAL REQUIREMENTS

1.2.1 Test Condition

Brightness level & contrast level max. Full white

pattern test mode following spec. Warm up more than

1 hr, ambient light < 10 Lux , Luminance meter CA110

or BM7 or same equipment .

1.2.2 Test Equipment

The reference signal source is a calibrated Chroma

2135 video generator or higher.The use of other

signal generators during qualification and production

is acceptable provided the product complies with this

specification.

1.3 ELECTRICAL

This section describes the electricalrequirement of the

monitor.The block diagram in Figure1 illustrates the various

electrical sub-system.

Figure 1

Monitor Block Diagram

Power Board

AC to DC Adapter,

DC to DC Converter,

DC to AC Inverter.

AC - IN

CCFT Dr ive

1W*2

Spe aker

(Option)

DC 5V

DC5.3V (Audio)

Inve rter cont rol

Speaker line input

Audio So urce

Audio line input

LCD Flat Panel

Panel d at a & control,DC power

Inte rface B oard

Flat P anel Controller, D DC

Audio AMP.

(Option)

Video Signalinput & DDC

Host Computer

Function key input

Functio n

Key Board

The LCD monitor consists of an interface board , a power board

, a function key board and two speaker (1W)(with audio)

The interface board will house the flat panel control logic ,

brightness control logic, audio function control (option), key

function control, DDC and DC to DC conversion to supply the

appropriate power to the whole board and LCD flat panel , and

transmitting LVDS signals into LCD flat panel module to drive

the LCD display circuit .

The power board will support main power DC5V to interface

board, and the power DC5.3V to audio function power of

interface board,and drive the two CCFLs (Cold Cathode

Fluorescent Tube).The interface board provides the power ON /

OFF control over the whole monitor and control for DPMS LED

indicator to function key board.

MONITOR SPECIFICATIO NS

Signal Input Frequency

ITEM

(Analog) V : 56Hz~76H z

Pixel clock 165MHz (Max)

Video Input Analog 0.7Vp-p

Display Pixels 640 x 480 (VG A) ~ 1680 x 1050 (WSXGA)

Sync Signal Separate SYNC for TTL (N or P)

Signal Input Frequency

(Digital) V : 56Hz~76Hz

Pixel clock 165MHz (Max)

Video Input Analog 0.7Vp-p

Display Pixels 640 x 480 (VG A) ~ 1680 x 1050 (WSXGA)

Connector AC Input AC100V ~ AC240V ± 10% 50/60Hz , 3 pin AC power cord

Input connector D-SUB 15 pin & DVI-D

Audio Jack

Power Consumption AC in 100V~240V Active 48W (with Audio), active 38W , power saving < 2W

User's Control Front Empowering,Auto Adjust,Adjust(-),Adjust (+),Menu,Power

OSD

Pre-Defined Timing Factory 19

User 9

Plug and Play VESA DDC2Bi

Power Saving VESA DPMS

Input Signal Counter Tolerance

Analog : H : 30kHz~81kHz

Digital : H : 30kHz~81kHz

Input Impedance 75

(OPTION A L) Audio input 3.6F

Contrast , Brightness , Position ,Clock ,Phase ,Analog/Digital,RESET, Color , Language select , Audio (option), etc.

H ± 1kHz,≦V±1Hz

≦

SPEC

1.3.1 Interface Connectors

1.3.1.1 Power Connector and Cables

The AC input shall have an IEC/CEE-22 type male

power receptacle for connection to mains power.

The power cord shall be with length of 1.8+/-0.005

meters.

1.3.1.2 Video Signal Connectors and Cable

The signal cable shall be 1.8 0.005 meters long.

+/-

At the end of the cable shall be a molded-over,

shielded,triple row, 15 position, D-subminiature

connector. The CPU connection shall have captive

screw locks, which will be adequate for hand

tightening. The monitor connection may use small

screws.

1. Product Specification (continued)

ACER X223W

Go to cover page

Connector P in Assignm ent

DSUB

P in Sig n a l P in S ig na l P in S ig n al

Red-Video

G reen-V ideo

Blue-Video

DDC-GND

Connector Pin D escription

D-SUB Pin Description

Pin N ame D e scription

1 Red -Video Red video signalinput. 2 G reen-Video Green video signal input. 3 B lue -V id eo B lue v id eo s ign al in pu t. 4GND Ground 5 DDC -G N D DDC gro und for the V E S A D DC 2 Bi functio n. 6 Red- GN D A nalog signal ground for the R e d video . 7 Green - G ND A na log signal gr o und for the G re e n video. 8 Blue-G N D Ana log signal gr o und for the B lue vide o .

9 + 5 V +5V input from host system for the V ES A DD C 2 Bi function. 10 S ync-G ND S ignal ground 11 GN D Ground 12 D DC _SD A SDA signal input for the V E S A D D CB 2i functio n. 13 H- S YN C Horizontalsignalinput from the host system. 14 V- S YN C Verticalsignal input from the host system. 15 D D C- S CL S CL signal input for the V ESA D D C 2B i function.

Red-GND

Green-GND

Blue-GND

+5V

Sync-GN D

DDC-SDA

H-SYNC

V-SYNC

DDC-SCL

DVI-I / DVI-D (If using DVI-D cable, C1, C2, C3, C4, C5 is NC)

Pin Signal Pin Signal Pin Signal

RX2-

RX2+

GND

SCL

SCA

Analog V-Sync (NC)

RX1-

RX1+

DVI-I / DV I-D C on nector P inDes crip tion

Pin Name Description Pin Nam e Description

1 RX2- TM D S l i n k #0channel#2 differen ti alpair 16 HP Hot plu g g in g 2 RX2+ TMDS link #0 cha nnel #2 differ ential pair 1 7 RX0- TMDS link #0 cha n nel #0 diffe rentia lp air 3 GN D GND for no link shar e 18 RX0+ TMDS link #0 c hannel #0 diffe rential p air 4 N C NC 19 GN D GND for no link sha re 5NC NC 20NC NC 6 SCL Clock lin e f or D D C i nterf ace 21 NC NC 7 S DA Dat a line for DDC int erfac e 22 GN D Clo ck shie ld

Analo g

V-s ync for ana log inter face 23 RXC + TMDS clock d iffere ntial pa ir

V- Sync

9 RX1- TMDS link #0 channel #1 d ifferent ial pair 24 RXC- TMDS clock d ifferentia l pair

10 RX 1+ TM D Slink #0channel#1 differen ti alpair C1

11 GND GNDfornolinkshare C2

12 NC NC C3

13 NC NC C4

14 5V +5V inpu t f romhost systemfor DD C2Bfunction . C5

15 GND Ground(U si n gas Detect Cabl e)

GND

RX0-

RX0+

GND

Analo g Red Analo g Gre en Analo g Blue

Analo g H-S ync Analo g GND

GND

RXC+

RXC-

Analog Red (NC)

Analog Green (NC)

Analog Blue (NC)

Analog H-Sync (NC)

GND

Analo gRe d signal

Analo gGr een sign al

Analo gBlu e signal

H-s ync for analo gint erface

Analo gGN D

1.3.1.3 Audio Jack (option)

This jack shall connect the audio input from host

computer.

1.3.2 Video Input Signals

Video Input Signal

No. Symbol Item Min

Fh Scanning Horizontal Frequency 30 81 kHz Minimum range

Fv Scanning Vertical Frequency 55 76 Hz Minimum range

Vih Hi Level Input 2.0 5.0 V Note 1)

Vil Low Level Input 0 0.8 V Note 1)

Video RGB Analog Video Level 0.0 0.7 1.0 V

Note 1) Schmitt-Triggers Input , Supported 3.3V device H(&V) sync output from PC.

Normal

Max Unit Remark

75Ωto Ground

1.3.2.1 Video Signal Amplitudes

The three video inputs consist of Red ,Green , and Blue

signals, each with its own coaxial cable terminated at the

monitor. These video signals are analog levels, where 0

V corresponds to black , and 700 mV is the maximum

signal amplitude for the respective color, when each

signal is terminated by a nominal 75.0 ohms .For a given

monitor luminance levels are measured using this

defined video amplitud driving a monitor meeting the

termination requirements .The signal amplitude is not to

be readjusted to compensate for variations in termination

impendance.

1.3.2.2 Video Signal Termination Impedance

This analog video signal termination shall be 75 1%

which shall be resistive with a negligible reactive

component

1.3.2.3 Synchronization ( Sync ) Signals

The Horizontal Sync (HS) TTL signal is used to initiate

the display of a horizontal line. HS may be either active

high or active low, depending upon the timing .The

Vertical Sync (VS) TTL signal is used to initiate the

display of a new frame .VS may be either active high or

active low, depending on the timing

1.3.2.4 Sync Signal Levels

The monitor must accept sync signals from both 3.3 and

5 volt TTL logic families.The inputs shall sense a logic 0

when the input is 0.8 volt or less and shall sense a logic

1 when the input is 2.0 volts or greater. In addition to

these level requirements, there shall also be a minimum

of 0.3 volt hysteresis provided for noise immunity

(typically by using a Schmitt Trigger input ).That is , the

input level at which the monitor actually detects a logic 0

shall be at least 0.3 volt lower than the level at which it

actually detects a logic 1.If the monitor sync processing

circuits are designed around the 3.3 volt logic family

,then the sync inputs must be 5 volt tolerant .

1.3.2.5 Sync Signal Loading

TTL input loading shall be equivalent to one TTL input

load. When logic 0 is asserted by a sync input , the

maximum current source from any single monitor sync

input to the driver is 1.6 mA .When logic 1 is asserted ,

the maximum current source from the driver to any

single monitor sync input is 400 uA .

Ω+/-

ACER X223W

Go to cover page

1. Product Specification (continued)

1.3.2.6 Abnormal Signal Immunity

The monitor shall not be damaged by improper sync

timing , pulse duration , or absence of sync , or

abnormal input signal amplitude ( video and/ or sync

too large or too small) , or any other anomalous

behavior of a graphics card video generator when

changing modes , or when any combination of input

signals is removed or replaced . Additionally , under

these conditions , the monitor shall not cause

damage to the driving source

1.3.3 User Controls and Indicatiors

1.3.3.1Power On / Off Switch

The monitor shall have a power control switch

visible and accessible on the front of the monitor .

The switch shall be marked with icons per IEC 417 ,

# 5007 and # 5009.The switch shall interrupt the DC

supply to the monitor

1.3.3.2 Power Indicator LED

The monitor shall make use of an LED type

indicator located on the front of the monitor .

The LED color shall indicate the power states as

given in Table 1.

Table 1

Function LED Color

Full Power Blue color

Sleep Orange color

1.3.3.3 On-Screen Display

The Lite-ON On Screen Display system shall be

used , controlled by a Menu button. If the buttons

remain untouched for OSD turn off time while

displaying a menu , the firmware shall save the

current adjustments and exit. Also, if the video

controller changes video mode while the OSD is

active, the current settings shall be saved

immediately, the OSD turn off, and new video mode

is displayed.

Description

Key When no OSD display OSD Displayed

Menu Display

Speaker Volume/Minus

(with Audio)

Speaker Volume/Plus

(with Audio)

Auto Adjust Function

Auto

Empowering Menu or sub.menu EXIT/Scenario mode

1. To display the OSD menu on the screen.

2. To select the OSD sub-Menu

1. Forward selection of the OSD menu.

2. Increase the value after sub-menu selected.

1. Back-forward selection of the OSD menu.

2. Decrease the value after sub-menu selected.

Menu or sub.menu EXIT/Auto Adjust function.

1.3.3.4 OSD adjustment

ITEM CONTENT

AUDIO VOLUME To increase or decrease the sound level

BRIGHTNESS Back li ght Luminance of the LCD panel is adjusted.

CONTRAST A gain of R , G and B signal is adjusted.

AUTO CONTRAST A gain of R , G and B signal auto adjust.

CLOCK The ratio of dividing frequenc y of the dot clock is adjusted.

PHASE The phase of the dot clock is adjusted.

H-POSITION The indication screen is horizontally moved right and left (1 Pixels pitch).

V-POSITION The indica tio n s c re en is ver tica lly moved up and down (1 Pixels pitch).

AUTO ADJUST Clock system auto adjustment, about under 8 sec.

COLOR BALANCE Select three ki nds of modes. ( USER /6500 / 9300 ).

OSD POSITION The OSD indication posit ion can be adjusted.

OSD L ANGUAGE

RECALL DEFAULTS All data copy fro m factory shipment data.

OSD DURATION Adjust OSD menu off time range from10~120 second.

POWER-SAVE

INFORMA TION

NOTE : OSD MENU SEE APPENDIX A

※

Select the language used for the OSD menu among English , French , Italian , Deutsch and Spanish.

Back light of the LCD panel is cut when the signal is not input (AC line power consumption 2W or less).

The frequency of the horizontal / vertical synchronizing signal under the input is indicated.

1.3.4 Monitor Modes and Timing Capability

1.3.4.1 Format and Timing

The monitor shall synchronize with any vertical

frequency from 55 to 76 Hz , and with any

horizontal frequency from 30 to 81KHz. If the input

frequency is out of the above – specified range,

the monitor shall display a warning screen

indicating that the input frequency is out of range.

Under no circumstances shall any combination of

input signals cause any damage to the monitor .

1.3.4.2 Factory Assigned Display Modes

There are 19 factory pre-set frequency video

modes. These modes have a factory pre-set for all

characteristics affecting front-of-screen

performance. When the system is powered-

on,previously stored screen parameters for a pre-

defined mode will be recalled if the operating

mode is one of those stored in memory. If the

operating mode is not one of those stored in

memory, the monitor CPU will select the PRESET

timing for a mode that is the next lowest in

horizontal scanning frequency to the mode being

currently used. The screen parameters may be

adjusted by the use of the front bezel controls and

then may be saved as a user defined mode. The

monitor shall include all the preset video timings

shown in the following page.(Please see Note.(3) )

1. Product Specification (continued)

ACER X223W

Go to cover page

1.3.4.3 Mode Recognition Pull-in

The monitor shall recognize preset modes within a

range of +/-1KHz whichever is less for horizontal ;

and within +/-1Hz for vertical.

1.3.4.4 User Display Modes

In addition to the factory pre-set video modes,

provisions shall be made to store up to 9 user

modes. If the current mode is a user mode, the

monitor shall select its previously stored settings.

If the user alters a setting, the new setting will be

stored in the same user mode. The user modes

are not affected by the pre-set command. If the

input signal requires a new user mode, storage of

the new format is automatically performed during

user adjustment of the display (if required, please

see Note.(4) )

Preset Timing Ch art

Item N o Resolution

1 102 720 x 400 (70Hz) 31.469 28.322 - + 2 103 640 x 480 (59.94Hz) 31.469 25.175 - 3 182 640 x 480 (66.66Hz) 35 30.24 - -

4 173 640 x 480 (72Hz) 37.861 31.5 - 5 109 640 x 480 (75Hz) 37.5 31.5 - -

6 648 x 500 (57.7Hz) 31.234 25.175 + +

7 104 800 x 600 (56.25Hz) 35.156 36 + +

8 116 800 x 600 (60Hz) 37.879 40 + +

9 117 800 x 600 (72Hz) 48.077 50 + +

10 110 800 x 600 (75Hz) 46.875 49.5 + + 11 108 832 x 624 (74.55Hz) 49.722 57.28 - 12 118 1024 x 768 (60Hz) 48.363 65 - 13 157 1024 x 768 (70Hz) 56.476 75 - 14 141 1024 x 768 (75Hz) 60.023 78.75 + + 15 126 1152 x 864 (75Hz) 67.5 108 + + 16 161 1280 x 960 (60Hz) 60 108 + + 17 179 1280 x 1024 (60Hz) 63.981 108 + + 18 131 1280 x 1024 (75Hz) 79.976 135 + + 19 1680 x1050(60Hz) 65.3 146.25 - +

NOTE : (1) 76≦FV≦86 : monitor can display but doesn't guarantee.

(2) fV < 55, or fV > 86 : warning invalid mode. (3) Factory m od el :

After w e first burn the code into the flash, every preset-modelw e run firstm ust do auto-adjusting. Then it'll not do auto-adjust again w hen we changed preset-mode back including AC on/offD C on/off. The only way that preset-mode do auto-adjust again is press '' Internal Factory Reset''.

(4) User m ode :

The code should memorize 9 timing m ode exclusive of preset-modes as use mode and do auto-adjusting. Whenusersetanewmodethatisnotamongpreviously.It'lldoauto-adjustingthenbesolvedtousermodes. The ne w mode w ill o ve rw rite the first mem o rize d u se r m o de s. The user modes be cleared is same as Factory mode. Just do '' Internal Factory Reset''.

(5) Internal F actory Reset and OS D F actory Reset behavior.

H-Sync Band Width

(KHz) (MH z ) H V

Polarity

1.3.5 Controller Requirements

1.3.5.1 General Requirements

The monitor shall include a controller capable of

converting the analog RGB signal from a standard

SXGA resolution video controller in the CPU to a

signal which can be displayed on the panel. The

controller will include a PLL, A/D converters, LVDS

transmitter and other circuitry necessary to perform

its function. The PLL shall be stable enough to

ensure that a static image from the CPU is placed

in the same physical location on the flat panel in

each frame.

1.3.5.2 Video Stretching

The monitor shall contain provisions to “stretch” the

video signal, so that an input signal from the

computer in any resolution smaller than 1680 x

1050 is automatically expanded to fill the entire

screen.

1.3.5.3 Panel Timing and Interface

The controller supplied with the monitor shall

control all panel timing. This controller shall

adequately insulate the monitor from the computer,

so that no possible combination of input signals

from the computer shall cause damage to the flat

panel or any other component of the monitor. The

LCD panel interface shall support the TFT

standard.

1.3.6 DC - AC Inverter Requirements

The DC-AC inverter is on the power board. The

frequencies used by the DC-AC inverter used to power the

backlight shall be chosen so as to prevent any noticeable

effects on the flat panel (such as a rolling effect).

1.3.7 Power Supply Requirements

The AC to DC converter power supply for the monitor shall

be an external AC to DC converter ”brick” This brick shall

have an IEC receptacle for main power input and a pin - in

-socket for DC power out. The brick shall provide sufficient

power for both the monitor and the backlight assembly,

and shall meet requirements specified in Table 2.

Table 2

C, with the unit

C, and nominal input line

Input Voltage Range

Input Frequency Range

Power Consumption

Line Fu s e

Initial Cold Start

Inrus h Cur rent

Hot Start Cycle

Under Voltage

Line Transient

AC to DC Converter Requirements

The operating range shall be from 90 to 132 and 195 to 265 AVC sinusoidal for all models specified.

Input power frequency range sha;; be from 47.5 to 63 Hz over the specified input voltage range.

Power consumption for the m onitor shall be less than 46W over the specified voltage and frequency ranges. In suspend or sleep mode the power consumption will be less than 2W.

The AC input shall be fused and become electrically open as a result on an unsafe current level. The fuse many not be user replaceable.

The power supply shall start and function properly when under full load, with worst case conditions of input voltage, input frequenct, operating temperature, and cold backlight lamps.

The inrush current must be limited to 30A when operated at 120VAC, and 50A when operated at 220VAC. Inrush current is

measured at an ambient temperature of 25 temperature stabilized in the pow er-off.

The power supply shall be dam aged when switched ON for one second and OFF for one second for seven consecutive after

operating for one hour at full load, 25 voltage.

The power supply shall contain protection circuitry such that the application of an input voltage below the minimum specified in this table shall not cause damage to the power supply unit nor cause failure of the input.

The power supply shall operate within IEC 801-4 (± 1KV) and IEC 801-5 (± 2KV) for the domestic U.S. version. The UPS power supply shall operate and comply with CE mark.

ACER X223W

Go to cover page

1. Product Specification (continued)

1.3.8 Display Communications Channel

The monitor assembly shall provide a display

communications channel that conforms to VESA

DDC2Bi hardware requirements. This configuration

shall contain the 128-byte EDID file as specified by

VESA EDID standard.The monitor should not write to

the EDID file for the first two minutes of operation

following power-up UNLESS some action taken by the

user or the host CPU forces the write (for instance,

requesting the serial number via the OSD).

Furthermore, it is recommended that CMOS switches

be incorporated to isolate the DDC IC from outside

connections while the EDID Fault Management is

being updated. This is to prevent corruption of the data

by attempts to read the data while it is being changed.

1.3.9 Firmware Update Function (same ISP function)

The update firmware need through from the D-Sub

connector, use DDC I2C bus to do update firmware.

1.4 PANEL ELECTRICAL

1.4.1 General Requirements

The panel used as the display device shall be an

WSXGA resolution,20/22W, TFT-LCD.This panel shall

be approved for use in this monitor.

1.4.2 Panel Timings

The controller included with the monitor shall translate

all video timings from the CPU that meet the timing

requirements listed in Panel specification into timings

appropriate for the panel. Under no circumstances may

the controller supply the panel with timings that may

result in damage. The controller shall insulate the

panel from the CPU , so that the panel shall always be

driven per it's own specification regardless of the

timings being sent from the CPU.

1.4.3 Polarizer Hardness

The outer face of the front polarizer panel shall be

covered with a coating witha#3hardness value

1.4.4 Backlight Requirements

1.4.4.1 General Requirements

The backlight assembly shall be designed to support

field replacement at the customer site or authorized

service center. The lamps shall have a continuous

operating life of at least 40,000 hours at 25. The

operating life is defined as having ended when the

illumination of light has reached 50% of the initial

value. The lamps shall extend a sufficient amount

from the edge of the light guide that sputtering over

the life of the lamps shall not cause degradation of

the luminance uniformity (such as non-illuminated

bands along the edges of the display).

1.4.4.2 Lamps Startup Time

The backlight lamps shall start about 2 sec of the

time the monitor power switch is pressed or the

monitor is restarted from a power - down mode .The

starting time shall stay about 2 sec. for the

minimum expected life of the lamps.

Test conditions are as follows :

Ambient Light ---------------------- < 1.0 lux

Temperature-------------------------- 10

Inactive Time ----------------------- > 24 hours

1.4.5 Defects

1.4.5.1 Visual Inspection

The LCD panel shall be inspected with all pixels set

to white,black , red , green , and blue. The color

variation, brightness variation , and overall

appearance must not be perceived as poor quality

by Lite-On . Areas and / or parameters considered

questionable shall be subjected to detailed

measurements .

1.4.5.2 Display 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 .

1.4.5.3 Light 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.

1.4.5.4 Allowable Defects

No cosmetic defects are allowed except those

specified below.The conditions of visual inspections

are as follows :

For P20/22 W 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.

℃

1. Product Specification (continued)

ACER X223W

Go to cover page

1.4.5.5 Defect Terminology

Table 3 gives the descriptive terms used in classifying

defects.

Spo ts or lines that a p p ea r dark in the d is p lay patte rn s and are

Dark / Spots / Lines

Bright Spots / Lines

Polarizer Scratch

Polarizer Dent

Rubbing Line

Newton R ing The “rainbow” effect caused by non-uniform cell thickness.

Mo ttling

Dim Line

Cross Lines Off

Bright/DarkDot Asub–pixel(R,G,Bdot)stuckoff/on(electrical).

usually the result of contamination. D efects do not vary in size or intensity (contrast) when contrast voltage is varied. Contrast variation can be achieved through the use of varying gray shade patterns.

Spots o r lines that appear light in the display p atterns. Defects do no t va ry in s ize or intens ity (co ntra st) w h en contrast voltage is varied. Contrast variation can be achieved through the use of varying gray sh ade patterns.

When the unit lights, lines appear light (white) with display patterns dark and do not vary in size. Physical dam age to the polarizer that does not damage the glass

When the unit lights, spots appear light (white) w ith display patterns dark and do not vary in size. Physical damage to the polarizer that does not damage the glass.

Horizontal o r d iagonal lines that app ear g ray w ith the display patterns dark and may have resulted from an “out of control” rubbin g process on the p o lyim ide or “wave s” on the B E F s or prism sheets.

Wh en the unit lig hts , variation / no n – u n iform ity (splotchiness) appears light (white) with the display and might v ary in size.

Wh en the unit lights, line (s) in th e mon ito r (vertical) or m ajo r (horizontal) axis appear dim, but not com pletely on or off.

When the unit lights, lines in both the minor and major axis do not appear.

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 illuminance at the LCD panel

is between 1000 lux and 1500 lux .Defect limits are given

in Table 4 .

1.5 Optical Characteristics

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

Inspection Spec.

Average Diameter smaller of

(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.

Acceptable Number Minimum Separation

ACER X223W

Go to cover page

2.1 MAIN OSD MENU

Outline:

The description for control function:

2 OSD Menu

Main

Sub

Ico n

N/A Warm

N/A Cool

N/A English N/A N/A D eutsch N/A Francais N/A Espanol N/A Italiano N/A N/A

N/A Auto C onfig

N/A Analog

N /A D ig it a l

N/A

N/A Information

N/A Reset

N/A Exit

Sub Menu

Ite m

User /Red 0-100 100

User/Green 0-100 100

User/Blue 0-100 100







H.Position

V. Position

OSD

Timeout

DDC/CI

switch

Description

Set the color tem perature to warm white. Set the color tem perature to cool w hite.

Ad ju s ts R ed /U s er /G re e n

Green/Blue intensity.

M u lti-la ng u a ge s ele ctio n . N /A

Ad jus t th e h o rizo nta l position of the OS D. Ad jus t th e v e rtic a l p os itio n of the OSD .

Ad jus t th e O S D tim e o ut. 10 -1 2 0 1 0

Auto Adjust the H/V Position, Focus and Clockof picture. (Only Analog InputM odel) Selectinput signal from analog (D-Sub) (Only DualInputM odel) Selectinput signal from digital(DVI) (Only DualInputM odel)

SelecttheDDC/CION or OFF

Show the resolution, H/V freq ue n cy ,SN an d inputportofcurrentinput tim in g .

Clear each o ld status of Au to-c o nfig u ratio n and set the co lor temperature to W arm.

Save user a djustment an d OSD disappear.

Adjustm ent

Range

The color

N/A

temperature w illbe set to cool.

N/A

Thelanguagewill

be set to Eng lish

0-100 50

N/A N/A

The DD C/CI switch,

N/A

defaultis “ON” in

N/A N/A

ResetValue

monitor.

2. OSD Manu (continued)

ACER X223W

Go to cover page

ACER X223W

Go to cover page

3.1 Packing Exploded Diagram

3. Exploded Diagram

3.2 Product Exploded Diagram

3. Exploded Diagram (continued)

ACER X223W

Go to cover page

ACER X223W

Go to cover page

4.1 Assembly procedures:

Connect the cable between power board(P802)

and interface board (P301)

Connect the function key cable into interface

board(P306)

Connect the FFC cable into interface board

4. Assembly and Disassembly Procedures

Take the key function cable out from the hole

shown as photo

Fix the function key cable with a PVC tape

P802

Take a bracket chassis base on a protective

cushion and stick an insulator on the specific

position, take a power board and turn it over. Then,

put it on the specific positions of bracket chassis

base.

Use a Phillips-head screwdriver screwed the

No.1~4 screws till that power board and bracket

chassis base firmly attached.(No1 screw

size=M4x8; No2~4 screw size=M3x6;

Torque=9~10KGFxCM).

P301

FFC

P306

Turn the monitor faced down and put it on the

Bracket Chassis module till both parts firmly

Take lamp cables out from the holes shown as

the photo.

Use a Phillips-head screwdriver screwed the

No.1~4 screws till that interface board and bracket

chassis base firmly attached.

Connect the FFC cable to the connector of the LCD

panel.

+ 28 hidden pages