acer P223

Table of Contents

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

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

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

03. Exploded Diagram

05.

Appendix I : User’s Manual

Appendix II: Quick Setup Guide

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

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

06. Schematics and Layouts------------------------------------------------------------------------------ 32

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

Appendix III : Spare Parts Llist

Safety Notice

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

containing high voltage.

Published by LITE-ON Service Printed in Taiwan © All rights reserved Subject to modification

23th-Jul-2007

Model ID: R22BNUM-M1

Service

ACER ACER_LCD_P223W_SM072301V1

Service Manual

Downloaded from www.Manualslib.com manuals search engine

http://www.manualslib.com/

Product Anouncement:

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

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.

!

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

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

degree of 220 C.°

Important Safety Notice

Go to cover page

1ACER P223W



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.

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.

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.

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

LCD Flat Panel

Power Board

AC to DC Adapter,

DC to DC Converter,

DC to AC Inverter.

1W*2

Speaker

(Option)

CCFT Drive

Fu

nctio

nk

ey

inp

ut

Panel data & control, DC power

Inverter control

Audio SourceAC - IN

Figure 1

Monitor Block Diagram

Au

dio

line

inp

ut

Function

Key BoardHost Computer

Vid

eoS

ign

alin

pu

t&

DD

C

Speaker line input

Interface Board

Flat Panel Controller, DDC

Audio

AMP.

(Option)

DC 5.3V (Audio)

DC 5V

SPEC

Signal Input FrequencyAnalog :

H : 30kHz~81kHz

(Analog) V : 56Hz~76Hz

Pixel clock 165MHz (Max)

Video Input Analog 0.7Vp-p

Display Pixels 640 x 480 (VGA) ~ 1680 x 1050 (WSXGA)

Sync Signal Separate SYNC for TTL (N or P)

Signal Input FrequencyDigital :

H : 30kHz~81kHz

(Digital) V : 56Hz~76Hz

Pixel clock 165MHz (Max)

Video Input Analog 0.7Vp-p

Input Impedance 75Ω

Display Pixels 640 x 480 (VGA) ~ 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 (OPTIONAL) Audio input 3.6F

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

Contrast , Brightness , Position ,Clock ,Phase

,Analog/Digital,RESET, Color , Language select , Audio

(option), etc.

Pre-Defined Timing Factory 19

User 9

Plug and Play VESA DDC2Bi

Power Saving VESA DPMS

Input Signal Counter Tolerance ≦ H ± 1kHz, ≦ V ± 1 Hz

ITEM

MONITOR SPECIFICATIONS

2

Go to cover page

ACER P223W



1. Product Specification (continued)

1.3.1.3 Audio Jack (option)

This jack shall connect the audio input from host

computer.

1.3.2 Video Input Signals

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 .

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+/-

.

1.3.2.5 Sync Signal Loading

D S U B

P i n S i g n a l P i n S i g n a l P i n S i g n a l

1 R e d - V i d e o 6 R e d - G N D 1 1 N C

2 G r e e n - V i d e o 7 G r e e n - G N D 1 2 D D C - S D A

3 B l u e - V i d e o 8 B l u e - G N D 1 3 H - S Y N C

4 N C 9 + 5 V 1 4 V - S Y N C

5 D D C - G N D 1 0 S y n c - G N D 1 5 D D C - S C L

C o n n e c t o r P i n A s s i g n m e n t

D -S U B Pin D e s criptio n

Pin N a m e D e s criptio n

1 R ed - V id eo R ed vid eo signa l inp ut.

2 G reen- V id eo G reen vid eo signa l inp ut.

3 B lue- V id eo B lue vid eo signa l inp ut.

4 G N D G ro und

5 D D C - G N D D D C gro und fo r the V ES A D D C 2 B i func tio n.

6 R ed - G N D A nalo g signa l gro und fo r the R ed vid eo .

7 G reen- G N D A nalo g signa l gro und fo r the G reen vid eo .

8 B lue- G N D A nalo g signa l gro und fo r the B lue vid eo .

9 + 5 V + 5 V inp ut fro m ho st system fo r the V ES A D D C 2 B i func tio n.

1 0 S ync- G N D S igna l gro und

1 1 G N D G ro und

1 2 D D C _ S D A S D A signa l inp ut fo r the V ES A D D C B 2 i func tio n.

1 3 H - S Y N C H o rizo nta l signa l inp ut fro m the ho st system.

1 4 V - S Y N C V ertica l signa l inp ut fro m the ho st system.

1 5 D D C - S C L S C L signa l inp ut fo r the V ES A D D C 2 B i func tio n.

C o n ne c to r P in D e s c rip tio n

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

Pin Signal Pin Signal Pin Signal

1 RX2- 11 GND 21 NC

2 RX2+ 12 NC 22 GND

3 GND 13 NC 23 RXC+

4 NC 14 5V 24 RXC-

5 NC 15 GND C1 Analog Red (NC)

6 SCL 16 HP C2 Analog Green (NC)

7 SCA 17 RX0- C3 Analog Blue (NC)

8 Analog V-Sync (NC) 18 RX0+ C4 Analog H-Sync (NC)

9 RX1- 19 GND C5 GND

10 RX1+ 20 NC

DVI-I / DVI-D ConnectorPinDescription

Pin Name Description Pin Name Description

1 RX2- TMDS link #0 channel#2 differentialpair 16 HP Hot plugging

2 RX2+ TMDS link #0 channel#2 differentialpair 17 RX0- TMDS link #0 channel#0 differentialpair

3 GND GNDfor no link share 18 RX0+ TMDS link #0 channel#0 differentialpair

4 NC NC 19 GND GNDfor no link share

5 NC NC 20 NC NC

6 SCL Clock line for DDC interface 21 NC NC

7 SDA Data line for DDC interface 22 GND Clock shield

8Analog

V-SyncV-sync for analoginterface 23 RXC+ TMDS clock differentialpair

9 RX1- TMDS link #0 channel#1 differentialpair 24 RXC- TMDS clock differentialpair

10 RX1+ TMDS link #0 channel#1 differentialpair C1Analog

RedAnalogRed signal

11 GND GNDfor no link share C2Analog

GreenAnalogGreensignal

12 NC NC C3Analog

BlueAnalogBlue signal

13 NC NC C4Analog

H-SyncH-sync for analoginterface

14 5V +5Vinput fromhost systemfor DDC2Bfunction. C5Analog

GNDAnalogGND

15 GND Ground(Usingas Detect Cable)

No. Symbol Item Min Normal Max Unit Remark

1 Fh Scanning Horizontal Frequency 30 81 kHz Minimum range

2 Fv Scanning Vertical Frequency 55 76 Hz Minimum range

3 Vih Hi Level Input 2.0 5.0 V Note 1)

4 Vil Low Level Input 0 0.8 V Note 1)

5 Video RGB Analog Video Level 0.0 0.7 1.0 V 75Ω to Ground

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

Video Input Signal

Go to cover page

3ACER P223W



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.

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) )

1.3.3.4 OSD adjustment


Function LED Color

Full Power Blue color

Sleep Orange color

Table 1

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.

Key When no OSD display OSD Displayed

1. To display the OSD menu on the screen.

2. To select the OSD sub-Menu

>Speaker Volume/Minus

(with Audio)

1. Forward selection of the OSD menu.

2. Increase the value after sub-menu selected.

<Speaker Volume/Plus

(with Audio)

1. Back-forward selection of the OSD menu.

2. Decrease the value after sub-menu selected.

E Empowering Menu or sub.menu EXIT/Scenario mode

Description

MENU Menu Display

Menu or sub.menu EXIT/Auto Adjust function.Auto Auto Adjust Function

ITEM CONTENT

AUDIO VOLUME To increase or decrease the sound level

BRIGHTNESS Back light 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 frequency 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 indication screen is vertically moved up and down (1 Pixels pitch).

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

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

OSD POSITION The OSD indication position can be adjusted.

OSD LANGUAGESelect the language used for the OSD menu among English , French ,

Italian , Deutsch and Spanish.

RECALL DEFAULTS All data copy from factory shipment data.

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

POWER-SAVEBack light of the LCD panel is cut when the signal is not input (AC line

power consumption 2W or less).

INFORMATIONThe frequency of the horizontal / vertical synchronizing signal under the

input is indicated.

※ NOTE : OSD MENU SEE APPENDIX A

4

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ACER P223W



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.

1.3.4.4 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) )

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.

1.3.5.2 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.


H-Sync Band W idth

(KHz) (M Hz) H V

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 model :

After we first burn the code into the flash, every preset-model we run first must do auto-adjusting.

Then it'll not do auto-adjust again when we changed preset-mode back including AC on/off DC on/off.

The only way that preset-mode do auto-adjust again is press '' Internal Factory Reset''.

(4) User mode :

The code should memorize 9 timing mode exclusive of preset-modes as use mode and do auto-adjusting.

W hen user set a new mode that is not among previously. It'll do auto-adjusting then be solved to user modes.

The new mode will overwrite the first memorized user modes.

The user modes be cleared is same as Factory mode. Just do '' Internal Factory Reset''.

(5) Internal Factory Reset and OSD Factory Reset behavior.

PolarityItem No Resolution

Preset Tim ing Chart

Input Voltage RangeThe operating range shall be from 90 to 132 and 195 to 265 AVC

sinusoidal for all models specified.

Input Frequency RangeInput power frequency range sha;; be from 47.5 to 63 Hz over the

specified input voltage range.

Power Consumption

Power consumption for the monitor 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.

Line FuseThe AC input shall be fused and become electrically open as a result

on an unsafe current level. The fuse many not be user replaceable.

Initial Cold Start

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.

Inrush Current

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 25oC, with the unit

temperature stabilized in the power-off.

Hot Start Cycle

The power supply shall be damaged when switched ON for one

second and OFF for one second for seven consecutive after

operating for one hour at full load, 25oC, and nominal input line

voltage.

Under 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.

Line Transient

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.

AC to DC Converter RequirementsTable 2

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5ACER P223W



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 with a # 3 hardness 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)6

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ACER P223W



1.4.5.5 Defect Terminology

Table 3 gives the descriptive terms used in classifying

defects.

1.5 Optical Characteristics

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

Inspection Spec.

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 .


Average Diameter smaller of

(L+W)/2 or L/20+2WAcceptable Number Minimum Separation

< 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.

7

Go to cover page

Dark / Spots / Lines

Spots or lines that appear dark in the display patterns and are

usually the result of contamination. Defects 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.

Bright Spots / Lines

Spots or lines that appear light in the display patterns.

Defects 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.

Polarizer Scratch

W hen 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

Polarizer Dent

W hen the unit lights, spots appear light (white) with display

patterns dark and do not vary in size. Physical damage to the

polarizer that does not damage the glass.

Rubbing Line

Horizontal or diagonal lines that appear gray with the display

patterns dark and may have resulted from an “out of control”

rubbing process on the polyimide or “waves” on the BEFs or

prism sheets.

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

M ottling

W hen the unit lights, variation / non – uniformity

(splotchiness) appears light (white) with the display and

might vary in size.

Dim LineW hen the unit lights, line(s) in the monitor (vertical) or major

(horizontal) axis appear dim , but not completely on or off.

Cross Lines OffW hen the unit lights, lines in both the minor and major axis

do not appear.

Bright / Dark Dot A sub – pixel (R,G,B dot) stuck off / on (electrical).

ACER P223W



2.1 MAIN OSD MENU

Outline:

The description for control function:

M a in

M e n u

Ic o n

S u b

M e n u

Ic o n

S u b M e n u

Ite mD e s c r ip tio n

A d ju s tm e n t

R a n g eR e s e t V a lu e

N /A W a rmS e t th e c o lo r te m p e ra tu re to

w a rm w h ite .N /A

N /A C o o lS e t th e c o lo r te m p e ra tu re to

c o o l w h ite .N /A

U s e r /R e d 0 -1 0 0 1 0 0

U s e r /G re e n 0 -1 0 0 1 0 0

U s e r /B lu e 0 -1 0 0 1 0 0

N /A E n g lis h

N /A ��

N /A D e u ts c h

N /A F ra n c a is

N /A E s p a n o l

N /A Ita lia n o

N /A ��

N /A ��

H . P o s it io nA d ju s t th e h o r iz o n ta l

p o s it io n o f th e O S D .0 -1 0 0 5 0

V . P o s it io nA d ju s t th e v e r tic a l p o s it io n

o f th e O S D .0 -1 0 0 5 0

O S D

T im e o u tA d ju s t th e O S D tim e o u t. 1 0 -1 2 0 1 0

N /A A u to C o n fig

A u to A d ju s t th e H /V

P o s it io n , F o c u s a n d

C lo c k o f p ic tu re .

(O n ly A n a lo g In p u t M o d e l)

N /A N /A

N /A A n a lo g

S e le c t in p u t s ig n a l fro m

a n a lo g (D -S u b )

(O n ly D u a l In p u t M o d e l)

N /A N /A

N /A D ig ita l

S e le c t in p u t s ig n a l fro m

d ig ita l (D V I)

(O n ly D u a l In p u t M o d e l)

N /A N /A

N /AD D C /C I

s w itc h

S e le c t th e D D C /C I O N o r

O F FN /A

T h e D D C /C I s w itc h ,

d e fa u lt is “ O N ” in

m o n ito r .

N /A In fo rm a tio n

S h o w th e re s o lu tio n , H /V

fre q u e n c y ,S N a n d

in p u t p o r t o f c u r re n t in p u t

tim in g .

N /A N /A

N /A R e s e t

C le a r e a c h o ld s ta tu s o f

A u to -c o n fig u ra tio n

a n d s e t th e c o lo r

te m p e ra tu re to W a rm .

N /A N /A

N /A E x itS a v e u s e r a d ju s tm e n t a n d

O S D d is a p p e a r .N /A N /A

T h e c o lo r

te m p e ra tu re w ill b e

s e t to c o o l.

M u lti- la n g u a g e s e le c tio n . N /AT h e la n g u a g e w ill

b e s e t to E n g lis h

A d ju s ts R e d /U s e r /G re e n

G re e n /B lu e in te n s ity .

2 OSD Menu

Go to cover page

8 ACER P223W



2. OSD Manu (continued) 9

Go to cover page

ACER P223W



3.1 Packing Exploded Diagram

3. Exploded Diagram10

Go to cover page

ACER P223W



3.2 Product Exploded Diagram

3. Exploded Diagram (continued) 11

Go to cover page

ACER P223W



Use a Phillips-head screwdriver screwed the

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

chassis base firmly attached.


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).

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.

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

Take the key function cable out from the hole

shown as photo

Fix the function key cable with a PVC tape

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.

Connect the FFC cable to the connector of the LCD

panel.

S5

S3

S2

S1

1

23

4

4.1 Assembly procedures:

4. Assembly and Disassembly Procedures

P301P802

P306

FFC

1

23

4

S4

S7

S6

12

Go to cover page

ACER P223W




No.1~2 screws.

(No1~2 screw size=M3x10; Torque=3~5KGFxCM).

Use a Phillips-head screwdriver screwed the No.1~4

screws on both side and assemble the LCD panel

and bracket chassis module.


Plug 8 lamp cables to the connectors of power

board.(Both of right and left sides)

Connect FFC cable to LCD panel. There are two

locks over here when plugging in should be

noticed

Use a Hex-head screwdriver screwed the

DVI and D-SUB connectors (No.1~4Hex Nut

screws Size=M3x8;Torque=3~5KGFxCM).

Take a key function board to hook with front

bezel (No.1~2) and connect to key function

cable.

4. Assembly and Disassembly Procedures (continued)

S11

S10

S13

S12

S8

S9

S8

S7

2

3 4

1

1 2

Angel < 5 degrees

Plug in parallel direction

12

34

12

13

Go to cover page

ACER P223W



Stick a screen card on the front bezel with two

tapes.

Assemble the hinge cover into both two sides

Assemble the stand upper side to the rear cover

through the way of screwing 4 screws till both

units firmly attached.

(No1~4 Screw Size=M4x10;

Torque=11~13KGFxCM).

Stick Vista and TC003 label on the correct

position the same as below photo

Put a ear over n he ssembled nit nd

ress on force echanisms ocked nd irmly

attached.

r c o t a u a

p m l a f

Take a LDPE+EPE bag to cover the LCD

monitor.

Take a PE bag to cover the stand base.

Take two cushion foams; one is held the front

side of LCD monitor, and another is held the back

side.

S20

S19

S18

S16

S15

S14

1

2

3

4

S17

4. Assembly and Disassembly Procedures (continued)14

Go to cover page

ACER P223W



Move previous assembled parts into the carton

then stick Vista and feature label on the carton then

packing the carton

Put accessories of stand, DVI cable, and

user’s manual ,power cable on specific

positions as photo below.


S21

FEATURE LABEL

VISTA LABEL

STAND

PO

WE

RC

AB

LE

DV

IC

AB

LE

D-SUB CABLE

USER’S MANUAL

S22

15

Go to cover page

ACER P223W



Use a Phillips-head screwdriver unscrew 4 screws

to release the stand base.

(No1~4 Screw Size=M4x10;

Torque=11~13KGFxCM).

Disassemble the stand cover.

Put returned unit on a protective cushion,then

remove LDPE+EPE bag.

Tear off tapes to remove the screen protector

card then turn over the LCD monitor (screen

faced down),

Take off two cushion foams

Take out all accessories including D-SUB cable

power cable, DVI cables, user’s manual, and stand

base and packing material from the carton.

(Note: It depends on whether users returning

the accessories.)

Open the carton with a proper tool.

Turn over the LCD monitor (screen faced up).

S6

S5

S4

S3

S2

S1

1

2

3

4

S7

4.2 Disassembly procedures

STAND

PO

WE

RC

AB

LE

DV

IC

AB

LE

D-SUB CABLE

USER’S MANUAL

FEATURE LABEL

VISTA LABEL

16

Go to cover page

4. Assembly and Disassembly Procedures (continued)ACER P223W



Work your way along the front bezel to disengage

all the locking mechanism.

Place cloth on the panel where you are working

on to protect the panel. Continuously, wedge

your finger between the front bezel and the

panel, then pry up on the front bezel to

disengage the locking mechanism.

Unhook the key function board from rear bezel,

disconnect the key function cable

Use a Hex-head screwdriver unscrewed 4 screws to

release the DVI and D-SUB connectors

(No1~4Hex Nut screws

Size=M3x8;Torque=3~5KGFxCM).

Use a Phillips-head screwdriver unscrewed the

No.1~2 screws to lease power plug


S8

S10

S9


S11

12

34

1 2

17

Go to cover page

ACER P223W



Disconnect the FFC cable to the connector of

panel.

Use finger to push the lock according to arrow

direction then take out the FFC cable

Take out lamp cables right through the No.1 and

2 square holes and separate the bracket chassis

module and LCD panel apart.

Unplug 4 lamp cables (No. 1~4).


No.1~4 screws to release the interface board.


S17

S16

S15

S13

S12

1

2

S14

1

2

4

3

Examine the panel surface accoring to inspection

criteria. Put it aside.

2

3 4

1


No.1~4 screws to disassemble the LCD panel

and bracket chassis module.


18

Go to cover page

4. Assembly and Disassembly Procedures (continued)ACER P223W




No.1~4 screws to disassemble the power board.

(No1 screw size=M4x8; No2~4 screw size=M3x6;

Torque=9~10KGFxCM).

Disconnect the FFC, P301, and function key

cables to connectors of interface board.

S18

S19


1

23

4

P301P802

P306

FFC

19

Go to cover page

ACER P223W



5.1 No.display of screen (Screen is black, color of LED is

amber)

5. Troubleshooting

Yes

No Proceed "No OSM display" section.

OK

NGInput the sync signal of computer, or

change the cable.

When a signal isn't being inputted, it is

indicated with "No Signal Input". it is

indicated with "Out Of Range" at the

time of the frequency that it can't be

distinguished.

Does OSM display when you push

PROCEED buttom.

Check if the sync signal from computer is

output and if the video cable is

connected normally.

Proceed "checking the resolution

change IC movement" section.

Go to cover page

20 ACER P223W



5.2 Nothing display on screen (screen is black, color of LED is

blue)

5. Troubleshooting (continued)

Refer "Checking the backlight unit" section"OK

NG

OK

Proceed "Abnormal sreen" dection"

OK

NG

1) Change pattern of video signal output on the host.

2) Reconnect the video cable.

3) Change the video cable.

NG

OK

NG

Failure Point

The LCD video signal cable is

disconnected.

Next

Page

Is backlight lit?

Is backlight lit?

Check OSM menu is display on

screen when you push the

"PROCEED" key.Check if the LCD video signal cable

is connected between the Interface

Board and LCD module.

Check the video cable for failure. Check

the host for output signal is all black or not.

21

Go to cover page

ACER P223W




OK

OK

Failure Point

1) Printed wire between Q301 pin3,

R305, R306, I301 pin1 is failure..

2) Q301 is failure.

NG

OK

NG

OK

Failure Point

I301 is failure.

Failure Point

1) Printed wire broke between P304

and I305 LVDS signals.

2) I305 is failure.

OK

Failure Point

1) The LVDS cable broke between

P304 and LCD module.

2) LCD module is failure.

NG

Proceed "Checking the DC/DC

converter circuit" section.

NG

Failure Point

1) FB301 is open.

2) C309, C310 is short.

OK

OK

NGProceed "Checking the DC/DC

converter circuit" section.

Failure Point

Printed wire broke between P306

pin 4 and I305 pin 90.OK

NG

Failure Point

I305 is failure

OK

NG

Continue

NG

Check the 5V power

supply for P304 pin 1, 2, 3

Check the I302 pin2

if voltage is 3.3V

Check if the voltage

between I301 pin2

and pin3 is above -

0.7V

Check if the Q301 pin2 of

PANELVCC_EN signal that

outputted by I305 pin85 is

High level.

Check the I301 pin2

if voltage is 5V

Check the D326 pin1

if voltage is 1.8V

Failure Point

1) Printer wire between R307

and I305 pin85 is failure

2) I305 is failure.

Check the P304 all

LVDS signals.

Check the input voltage level whether

was changed when pressed function

keys on the P306 pin 4 (normal is high

level, when push buttom, generated

1.6V)

Check if the voltage on

I305 pin 90 that is from

3.3V to 1.6V.

NG

5.2 Nothing display on screen (screen is black, color of LED is

blue) continued

Go to cover page

22 ACER P223W



5.3 Checking the back light unit


Is +22V supplied to inverter PWB ?

(by the power board)

OKNG

Failure Point

Power board of Inverter part failure.

OK

NG

Failure Point

1) printed wire broke between P301

pin2, R303 and I305 pin 88.

2) I305 is failure.

OKNG

Failure Point

1) printed wire broke between P301

pin3, R301 and I305 pin86.

2) I305 is failure.

Failure Point

1) Back light unit of LCD module is

failure.

2) Inverter Cable is disconnected

Check the BKLT_EN signal

of the DC input P301 pin2 at

TTL high level.

Check the BKLT_ADJ signal

of the input P301 pin3 from

I305 pin86 is a PWM signal.

23

Go to cover page

ACER P223W



5.4 Abnormal screen for VGA


OK

NGFailure Point

1) No R, G, B video signals output from

host computer, check computer.

2) Video signal cable disconnection.

Failure Point

In the case of the Red signal. (A Green and

Blue signal is the same path, too.)

1) Printed wire broke between P302 pin1

and I306 pin23.

2) Video cable is failure.

3) FB303,FB304, R309 is open.

4) R311 is short or open.

5) C315 is short or open.

NG

OK

Failure Point

Printed wire broke between I305 and P304.

NG

OK

Check the R, G, B video

signal from computer input on

P302 of video connector.

Check the R, G, B input video

signals on I305 pin18, 20, 23

respectively that their level is 0.0

to 0.7Vp-p.

Check all LVDS signals

being output to P304 from

I305?

Process "Checking the

resolution change IC

movement" section.

Go to cover page

24 ACER P223W



5.5 Abnormal screen (For the DVI)


OK

NGFailure Point

1) No DVI video signals output from host

computer, check computer.

2) DVI Video signal cable disconnection.

Failure Point

In the case of the DVI_RX0+/- signal. (A

DVI_RX1+/-, DVI_RX2+/- and DVI_RXC+/-

signal is the same path, too.)

1)Printed wire broke between P303 pin 17,

18 and I306 pin 3, 4.

2) Video cable is failure.

3) R336, R337 open.

NG

OK

Failure Point

Printed wire broke between I305 and

P304.

NG

OK

Check the DVI video signal from

computer input on P303 of DVI-I

video connector.

Check the DVI input video signals on I305 pin 3,

4, 6, 7, 9, 10, 12, 13 respectively that differential

input voltage is 150 to 1200mV, and input

commond mode voltage is 3.3V.

Check all LVDS signals being

output to P304 from I305?

Prpcess "Checking the resolution

change IC movement" section.

25

Go to cover page

ACER P223W



5.6 Abnormal OSM display adjust problem


OK

NG Failure Point

1) Function key wire disconnection.

2) Function key wire is failure.

3) Function key board is failure.

OK

NG Failure Point

1) Printed wire broke among P306 pin4, pin5; R369 and I305

pin90.

2) Printed wire broke among P306 pin5,R372, and I305 pin89.

3)C386,C388 ,C389,C390 are short.

Failure Point

I305 is failure.

Check the input TTL level whether was changed

when pressed function keys on the P306 pin 4, 5

(normal is high level, when push buttom, generated

low level plus)

Check the input TTL level of I305

pin89, 90 whether was changed

when pressed function keys.

(Refer to Table 1)

Go to cover page

26 ACER P223W



5.7 Abnormal plug and play operation for VGA


OK

NGFailure Point

The host machine is not communicatiog in DDC2B

mode.

OK

NGFailure Point

1) Printed wire broke between I303 pin8, D308

and P302 pin9.

2) D309, C329 is short.

3) D308 is failure.

OK

NG Failure Point

I303 is failure.

OK

NG Failure Point

The Video cable is failure.

OK

NG Failure Point


Failure Point

1) Printed wire broke among I305 pin30, pin31,

R328,R330 and P302 pin12, 15 .

2) I303 maybe failure.

3) R326, R327 are open.

4) R328 or R330 or C330 or C331 is open or

short.

Confirm the host computer

supplies DDC2B mode.

Check the voltage on

P302 pin9 that is power

DC 5 V.

Check the voltage on I303

pin8 that is power DC 5 V.

Check the signal on P302

pin12, 15 that is serial data /

clock signal.

Check the output signal of

serial data/clock on I303

pin5, 6.

27

Go to cover page

ACER P223W



5.8 Abnormal plug and play operation (For the DVI)


OK

NG

Failure Point

The host machine is not communicatiog in

DDC2 mode.

OKNG

Failure Point

1) Printed wire broke between I304 pin8, D321

and P303 pin 14.

2) D321 is failure.

3) D322 is short.

OK

NG Failure Point

I304 is failure.

OK

NGFailure Point


OKNG

Failure Point


Failure Point

1) Printed wire broke between I305 pin 1,

pin100, I304 pin 5, 6 and P303 pin 7, 6.

2) I305 maybe failure.

3) R347, R349 is open.

4) R345 or R346 or C344 or C346 is short.

OK

NG

Failure Point

1) Printed wire broke between P303 pin14 and

pin16.

2) R338 is open.

3) C340 or C341 is short.

Confirm the host computer

supplies DDC2 mode.

Check the voltage on P303



pin 16 that is 4.5V.

Check the voltage on I304



pin 6, pin7 that is serial data

/ clock signal.

Check the output signal of

serial data/clock on I304

pin 5, pin6.

Go to cover page

28 ACER P223W



29

Go to cover page

5.9 Checking the interface circuit of sync signal

5.9.1 Checking the control circuit of horizontal sync pulse

OK

NGFailure Point

Video cable is failure.

OK

NG Failure Point

1) Printed wire broke between P302 pin13

and I305 pin27.

2) FB309, R321 are short.

3) D307 or R324 or C327 is short.

Failure Point

Process "Checking the resolution change IC

movement" section.

Check the horizontal sync

signal on P302 pin13 TTL

level.

Check the horizontal sync

signal on I305 pin27 TTL

level.

5. Troubleshooting (continued) ACER P223W



OK

NG Proceed " Checking the DC/DC converter circuit" section.

OK

NG Proceed " Checking the DC/DC converter circuit" section.

OK NG

Failure Point

1) Printed wire broke between X301 and I305 pin96, pin97.

2) C379, C380 is short or open.

3) X301 failure.

OK

NG

OK

NG

Failure Point

1) Printed wire broke between I305 pin37, pin38, pin39, pin40 and

I306 pin1, pin2, pin5, pin6.

2) I306 failure.

Failure Point

I306 failure.

Failure Point

1) Printer wire broke between I305 pin84

and C378

2) C78 is short.NG

OK

Failure Point

1) Printer wire broke between I305 pin84 and C378.

2) C381 is short.

3) R358, D328 is failure

4) I305 is failure

Check +3.3V supply on I305 pin8,

pin14, pin16, pin24 , pin32, pin49,

pin56, pin75, pin98

Check +1.8V supply on I305 pin

51, 66, 82, 34.

Check X301 14.318MHz clock

input to I305 pin96 and pin97 at

TTL level.

Check I305 pin 84 HWRESET

signal is low level at normal

operation.

Check if D328 pin1 is low.

Check I305 pin37, pin38, pin39,

pin40 SPI signal

(Same as the IIC signal).

Go to cover page

30

5.10 Checking the resolution change IC movement

5. Troubleshooting (continued)ACER P223W



5.11 Checking the DC/DC converter circuit

OKNG Failure Point

1) Power wire disconnection.

2) Power board is failure.

OKNG Failure Point

1) Printed wire broke between P301 pin5,

pin6, and I302 pin3.

Failure Point

I302 is failure.OK

NG

OKNG Failure Point

Printed wire broke between I302 pin2, pin4

and Q305 pin1.

Failure Point

D326 is failure.OK

NG

Failure Point

1) Printed wire broke between I302 pin 2. 4,

Q306 pin1 and I305 VCTRL pin.

2) FB311, FB312, FB313, FB314, FB315, are

open.

Check the 5V is output from

P301 pin5, pin6.

Check the 5V is input to

I302 pin3.

Check the 3.3V is output

from I302 pin2, 4.

Check the 3.3V is input to

Q305 pin1.

Check the 1.8V is output

from D326 pin 1.

31

Go to cover page

5. Troubleshooting (continued) ACER P223W



6.

Sch

em

atic

sa

nd

La

yo

uts

:

_6

.S

CH

EM

AT

ICS

BLO

CK

DIA

GR

AM

1A

CE

R_

LC

D_

P2

23

W_

PC

BN

o.

6832190100P01

Scaler

Function

Key

Board

FlashEPROM

SST25VF010A

PMC25LV010A

XTAL

14318MHZ

.

DCDC

-5v33v

-.

Power&

Invertor

Board

AC

110220V

/Input

LVDS

I305

I306

+5V

P301

I302

BrightnessInvOnOff

,_

/

P304

AudioDC53VOutOption

.(

)

LCDModule

Backlight

18v

.

PowerCon.

PanelCon.

Reset

P306

Key

Con.

X301

VCTRL

Q305

RC

VLCD

DSUB

-

I303

DDC

24LC02B

VGADDCCLK

__

,VGADDCDAT

__

P302

RGBHsVs

,,,

,TMDS

DDC

24LC02B

I304

DVIDDCSCL

__

,DVIDDCDAT

__

P303

DVID-

Analog

Video

Input

Digital

Video

Input

TSUMU58BWHLLF

-

DV

IO

PT

ION

AUOM220EW01V2V0

-/

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Documents

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