Acer G245H Schematic

ACER

DBG DPBU II

Service

Service Manual

ACER_LCD_G245H_SM20090914V1

Model ID: RB24HAC

Table of Contents

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

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

02. OSD Menu-----------------------------------------------------------------------------------------------10

03. Exploded Diagram------------------------------------------------------------------------------------- 12

04. Assembly and Disassembly Procedures-----------------------------------------------------------14

05. Troubleshooting----------------------------------------------------------------------------------------21

06. Firmware Upgrade Processes------------------------------------------------------------------------35

07. Writing EDID Processes-------------------------------------------------------------------------------37

08. Schematics and Layouts------------------------------------------------------------------------------39

Appendix I: User’s Manual

Appendix II: User’s QSG

Appendix III: Spare Parts List

Appendix IV: Software Pack

Safety Noti ce

Any person at tempting to service this cha ssis must familiarize with t he chassis an d be

aware of the ne cessary safety precautio ns to be used when serving elect ronic equip ment containing

high voltag e.

Published b y Wistron Corporation Prin ted in Taiwan © All rights reserve d Subject to mo dification

14th-Sep- 2009

Product Announcement:

Important Safety Notice

ACER G245H

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3

1

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. Furthermore, the possible 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 safety 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.

Display Area

24” diagonal 556(H)x323(V)

Resolution

1920 x 1080 pixels

Display Color Number

16.7M colors(6bit Hi FRC)

Display Type a-Si TFT active-matrix

Contrast Ratio 1000 : 1 typ

Brightness

300cd/m² typ

Response Time

(Ton + Toff) 5 ms typ

Pixel Pitch 0.276mm(H) x 0.276mm(W)

160 degrees typ

CR>10

160 degrees typ CR>10

Vertical Viewing

Horizontal Viewing

SPEC

H 30kHz ~ 83kHz

V 56Hz ~ 75Hz

Max Pixel clock 205MHz

RGB Input Level 0.7Vp-p

RGB Input Impedance 75Ω

Sync Input Signal Separate SYNC, Composite Sync

Sync Input Impedance 50Ω

H 30kHz ~ 83kHz

V 56Hz ~ 75Hz

Max Pixel clock 165MHz

Input Level 150mV<=Vp-p<=1200mV

Input Impedance Input Impedance 100Ω per pair

AC power

AC 100V ~ AC 240V ± 10%

50/60Hz, 3 pin AC power cord

Input connectors

D-SUB 15 pin , DVI-D 24pin, HDMI

19 pin

AC IN 90~264V

Normal Operation

Power Savin g < 2W

Power Off < 1W @ (90VAC~264VAC)

User’s Con trol under Panel Buttons Right,Left,MENU, AUTO,E

Preset Timing 22

User’s Timing 9

VESA DDC2B

DPMS

H ±1kHz, V ±1 Hz

Power Savin g

Input Signal Counter tolerance

(max-min/max) x 100%

35% typical

Pre-Defined Timing

Plug and Play

Conne ctors

Power Con sumption

55W Max

Dimming control range

ITEM

Analog Signal Input

Frequency Ranges

Digital Signal Input

Frequency Ranges

2

ACER G245H

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1. Product Specification

This model combine with three platform. See below explanation.

1. Scaler IC: RTD2482RD is used in the monitor which had

VGA, DVI and HDMI port. Using simply word to define

it.(1A1D1H+OD)

2. Scaler IC: RTD2482D is used in the monitor which had VGA,

DVI and HDMI port. Using simply word to define it.(1A1D1H)

3. Scaler IC: RTD2555LH is used in the monitor which had VGA

and DVI port. Using simply word to define it.(1A1D)

4. Scaler IC: RTD2055L is used in the monitor which had VGA

port. Using simply word to define it.(1A)

1.1 Scope:

This document defines the design and performance

requirements for the 24” wide flat panel monitor. The display

elements shall be a 24” inch diagonal, UXGA (1920 x 1080)

resolution TFT-LCD display. Video input signals are D-sub

and digital DVI-D and HDMI signal. Power saving function

complies with the VESA DPMS (Display Power

Management Standard).

General display parameters:

LCD Module

P307 LVDS output

Rx2,Rx1,Rx0,RXC

I303 24LC02 (DVI EDID)

P303 DVI-D

Digital Input

(connector to LCD panel)

DDC_SCL_DVI DDC_SDA_DVI

LVDS

I308 scaler

RTD2482D

R,G,B,Hs,Vs

P302 DSUB

Analog Input

I307 24LC16B NVRAM

(store ADJUST data)

I309 Flash ROM (store system

source code)

I302 24LC02 (VGA EDID)

DDC_SCL_VGA, DDC_SDA_VGA

Power & Inverter

&Audio Board

AC

110/220V

Input

AUDIO Input

Function Key Board

BKLT_EN, BKLT_ADJ AUDIO_EN, VOLUME

P301

P309

I306 24LC02 (HDMI EDID)

DDC_SCL_HDMI DDC_SDA_HDMI

P305 HDMI

HDMI

Input

I304&I305

+5V

LDO

5V-3.3V

3.3V-1.2V

- This LCD monitor includes an interface board, a power

board and a function key board.

- The interface board controls the TFT panel control logic,

brightness control logic, and DC-DC conversion to supply

the appropriate power to the whole board and LCD panel.

The LVDS signals transmit video data to LCD module to

drive the LCD display circuit.

- The power board will provide the DC power to the

interface board, LCD panel and inverter board.

- The function key board is used for OSD control, monitor

power on/off and the LED indicator for power status.

This monitor meets Energy Efficiency Grade 2 of China.

1.2 General Requirements:

1.2.1 Test Condition:

Normal test condition is that brightness level set at

1.2.2 Test Equipment:

1.3 Electrical:

This section describes the electrical requirement of the

max. and contrast level set default. Test pattern is full

white pattern. The warm up time is more than 30

minutes. Ambient light should be less than 1 Lux.

The reference signal source is a calibrated Chroma

2326 or Quantum 801GD video generator. The use of

compatible generators during qualification and

production is acceptable. Luminance meter is Minolta

CA210, TOPCON BM7 or compatible equipment.

monitor. The block diagram is below:

1. Product Specification

PIN NO SYMBOL FUNCTION

1 RXO0N Neg ative L VDS differential data output

2 RXO0P Positive LVDS differential data output

3 RXO1N Neg ative L VDS differential data output

4 RXO1P Positive LVDS differential data output

5 RXO2N Neg ative L VDS differential data output

6 RXO2P Positive LVDS differential data output

7 GND Ground

8 RXOC- Negative Sampling Clock(ODD data)

9 RXOC+ Positive Sampling Clock(ODD data)

10 RXO3N Neg ative L VDS differential data output

11 RXE3P Positive LVDS differential data output

12 RXE0N Neg ative L VDS differential data output

13 RXE0P Positive LVDS differential data output

14 GND Ground

15 RXE1N Neg ative L VDS differential data output

16 RXE1P Positive LVDS differential data output

17 GND Ground

18 RXE2N Neg ative L VDS differential data output

19 RXE2P Positive LVDS differential data output

20 RXEC- Neg ative Sampling Clock(EVEN data)

21 RXEC+ Positive Sampling Clock(EVEN data)

22 RXE3N Neg ative L VDS differential data output

23 RXE3P Positive LVDS differential data output

24 GND Ground

25 NC *CE(For LCD internal use only. Do not connect)

26 NC *CTL(For LCD internal use only. Do not connect)

27 NC No connection

28 VDD

29 VDD

30 VDD

Power Supply: +5V

Pin Signal Description

1 Red-Video Red video signal input

2 Green-Video Green video signal input

3 Blue-Video Blue video signal input

4 GND Ground

5 Self Test Detect VGA Cable have connected or not

6 Red-GND Analog signal groun d for the Red video

7 Green-GND Analog s ignal ground for the Green video

8 Blue-GND Analog s igna l ground for the Blue vide o

9 + 5V

+5 input from host system for the VESA DD C2Bi function

10 DDC-GND Signal ground

11 GND Ground

12 DDC-SDL

SDA signal input for the VESA DDCB2i function

13 H-SYNC Horizontal signal input from host system

14 V-SYNC Vertical s ignal input from the host sys tem

15 DDC-SCL

SCL signal input for the VESA

DDC2Bi function

Pin Signal Pin Sig nal

1 TMDS Data 2- 13 NC

2 TMDS Data 2+ 14 + 5V POWER

3 TMDS Data GND 15 Self Tes t

4 NC 16 Hot Plug Detect

5 NC 17 TMDS Data 0-

6 DDC Clock 18 TM DS Data 0+

7 DDC Data 19 TM DS Data GND

8 NC 20 NC

9 TMDS Data 1- 21 NC

10 TMDS Data 1+ 22 TMDS Clock GND

11 TMDS Data GND 23 TMDS Clock +

12 NC 24 TM DS Clock -

Pin Signal Pin Signal Pin Signal Pin Signal

1 TMDS Data 2+ 6 TMDS Data 1- 1 1 TMDS Clock S hield 16 S DA

2 TMDS Data 2 Shield 7 TMDS Data 0+ 12 TMDS Clock- 17 DDC/CE C Grou nd

3 TMDS Data 2 - 8 TMDS Da ta 0 Shield 1 3 CEC 18 +5V Power

4 TMDS Data 1+ 9 TMDS Data 0- 1 4 Rese rve d 19 Hot Plu g Dete ct

5 TMDS Data 1 Shield 10 TMDS Clock+ 15 S CL 20

ACER G245H

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3

1.3.1 Interface Connectors:

1.3.1.1 Power Connector and Cable:

The AC inlet connector shall be an IEC/CEE-22

type male power receptacle for connection to main

power. The power cord shall be black with length

of 1.8±0.05 meters. The power cord type is

different from regions.

1.3.1.2 Analog Connector and Cable:

These signal input connector shall be 15 D-sub

capable of receiving VGA analog signal. The VGA

signal cable shall be black and with length of 1.8

meters. The D-sub cable shall be a molded-over,

shielded, triple row, 15 pins and blue color D type

connector.

1.3.1.3 DVI-D Digital Connector and Cable:

These signal input connector shall be 24 DVI-D

capable of receiving TMDS digital signal. The DVI

cable shall be black and with length of 1.8 meters.

The DVI cable shall be a molded-over, shielded,

triple row, 24 pins, and white color DVI-D

connector.

1.3.1.4 HDMI Digital and Audio Connector and Cable:

These input connector shall be capable of

receiving digital video and audio signal per HDMI

requirement. The optional HDMI cable shall be

Connector Pin Assignment:

A. D_SUB

black and with length of 1.8 meters.

B. DVI-D (Digital TMDS) Connector

C. HDMI Connector

D. Flat Panel Connector

No. Symbol Item Min Max Unit Remark

1 Fh Horizontal Frequen cy 30 83 kHz Minimum range

2 Fv Vertical Frequency 56 75 Hz Minimu m range

3 Fclk Pi xel Clock Frequency 20 5 MH z

4 Vih Hi Level Input 2 5 V Note 1)

5 Vil Low Level Input 0 0.8 V Note 1)

6 Vide o RGB Analog Video Level 0 0.735 V 75? to Ground

LED Color

Power-On Mode Blue

Power-Saving Mode Amber

Key When no OSD display OSD Display

1. To display the OSD menu on the screen.

2. To select the OSD sub -menu.

1. Forward selection of t he OSD menu.

2. Increase the value after sub-menu selected.

1. Back-forward select ion of the OSD menu.

2. Decease the v alue after sub-menu selected.

Auto Auto Adjust Functio n Menu or sub-menu EXIT/AUTO A djust function

E Empoweri ng

Menu or sub-m enu EXIT/S CENARIO mode

< Speaker Volume /Plus(With audio)

MENU Menu Display

> Speaker Volume /Minus(With audio)

4

ACER G245H

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1. Product Specification

1.3.2 Input Signals:

Video Input Signals Range(Analog RGB Signal Input):

75Ω

Note 1) 2.2K to Ground. Schmitt-Triggers Input. Support 3.3V H & V

1.3.2.1 Video Signal Amplitudes:

Ω

SYNC output device.

The video inputs consist of Red, Green and Blue

signals each has its own coaxial cable terminated

at the monitor. These video signals are analog

levels, where 0V corresponds to black, and 700mV

is the maximum signal amplitude for the respective

color. The video signal is terminated with 75Ω.

1.3.2.2 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 according to 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 according to the

timing.

1.3.2.3 Sync Signal Levels:

The monitor must accept sync signals from both

3.3 and 5 volt TTL logic families. The input 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). If the

monitor sync processing circuits were designed

with 3.3 volt logic family, then the sync inputs must

be 5 volt tolerant.

1.3.2.4 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 1.6mA. When

logic 1 is asserted, the maximum current source

from the driver to any single monitor sync input is

400uA.

1.3.2.5 Abnormal Signal Immunity:

The monitor shall not be damaged by improper

sync timing, pulse duration, absence of sync,

abnormal input signal amplitude, or any other

anomalous behavior of a graphics card.

1.3.2.6 Digital TMDS Input (DVI signal input):

These video inputs consist of Tx0+/- to TX2+/-±

and CLK+/- signals, each with its own shielded

twisted pair. These video signals are digital levels.

Each signal pair is terminated by a normal 100

1.3.2.7 HDMI Input Signal:

The monitor shall include HDMI support for digital

video and audio per HDMI industry requirement.

1.3.2.8 Audio Function (optional):

This monitor integrated with stereo audio.

Speakers: 2 x 1.5W

Amplifier: Output 1.5W with 500mVrms Sine wave

input.

IΩ.nput impedance: >22KΩ.

THD: <10%.

1.3.3 User Controls and Indicators:

1.3.3.1 Power On/Off Switch:

The monitor shall have a power control switch

visible and accessible on the front of monitor.

1.3.3.2 Power Indicator LED:

The monitor shall have LED indicator located on

the front of the monitor.

1.3.3.3 On-Screen Display:

On Screen Display system shall be used to

control the monitor. Current setting will be saved

and OSD will be tuned off when the keys are not

touched for a period of time (Please see OSD

timeout section).

a) Key Function Overview

All functions are controlled by OSD buttons on the

front cover.

1. Product Specification

ITEM Content

Volume To increase or de crease the sound level

Brightness Adjust backlight luminance of the LCD panel

Contrast Adjust gain of R,G,B signal

Clock Adjust the ratio of dividing frequency of the dot clock

Focus Adjust the phase of the dot clock

H.Position The active screen is horizontally move right and left

V.Position The active screen is vertically move up and down

Color temp Select three kinds of modes(Warm, Cool, User)

OSD

Language

1.USA-select the language among English, French, Italian,

Deutsch, Spanish,

繁體中文, 简体中文, 日本語

2.EMEA-select the language among English, French,

Italian, Deutsch, Spanish, Russian, Dutch, Finnish

OSD Position Adjust the OSD menu position

OSD Timeout The OSD menu show time

Setting The setting of Input Source, Wide Mode, DDC/CI

Information

It will show resolution, the frequency of horizontal/vertical

synchronizing and S/N

Reset All data copy from shipment factory data

Power Saving M ode Menu

This function gives a warning mes sage when selected input signal is not ac tive.

When the monitor detected that the VGA or DVI is susp end or standby mode. The monitor shall display a message, “No

Signal” for 4 seconds and the LED shall be blue, and to alert the user that input signal

is not active. T hen the monitor shall go into sleep mode and the LED shall b e amber.

Out of range Menu

This function gives warning mess age

about input re solution or refresh rate that the monitor cannot support. The monitor will display “Input not supported” when an

input signal is out o f the normal operat ion range.

Check Signal cable Menu

This function gives warning mess age when the VGA cable is not connec ted.

When the monitor detected that the VGA cable is not connec ted to the monitor. The OSD shall display a message “Cable not

connected” all the time to alert th e user that the v ide o cable is not plugged in. The LED shall be blue. The monitor sha ll use a

method of a pull-up resistor on a ground pin to determine if the video cab le is

connected to the PC.

Item Resolution H -Sync

(KHz)

V-sync

(Hz)

Pixel Clock

(MHz)

Mode

1 640 x 480@60Hz 31.4 7 59.94 25.17

2 640 x 480@72Hz 37.8 6 72.81 31.5

3 640 x 480@66Hz 35 66.66 30.24 MAC

4 720 x 400@70Hz 31.4 7 70.08 28.32 VESA

5 800 x 600@56Hz 35.1 5 56.25 36 SVGA

6 800 x 600@60Hz 37.8 8 60.32 40 SVGA

7 800 x 600@72Hz 48.0 8 72.19 50 SVGA

8 1024 x 600@60Hz 37.32 60 48.96

9 1024 x 768@60Hz 48.36 60 65 XGA

10 1024 x 768@70Hz 56.48 70.07 75 XGA

11 1152x864@75Hz 67.5 75 108 VESA

12 1280x960@60Hz 60 60 108 VESA

13 1280x1024@60Hz 49.7 60 83.5 SXGA

14 1280x720@60Hz 44.76 60 74.48 VESA

15 1280x800@60Hz 49.7 59.81 83.5 WXGA

16 1360x768@60Hz 47.71 60.01 85.5 WXGA

17 1440x900@60Hz 55.93 59.88 106.5 WXGA+

18 1680x1050@60Hz 65.29 59.95 146.25 WSXGA+

19 1600x1200@60Hz 75 60 162 UXGA

20 1920x1080@60Hz 67.16 59.96 173 UXGA

21 1920x1080@60Hz 67.5 60 148.5 UXGA

22 1920x1080@60Hz 66.58 59.93 138.5 UXGA

ACER G245H

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5

b) Menu Operation:

Press the MENU button brings up the first level menu.

This menu button is used to enter the second OSD

menu also.

c) OSD Function:

OSD Time: 10 seconds

OSD Language: English

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 76Hz, and with any

horizontal frequency from 30 to 83KHz for analog

input and from 30 to 75KHz for DVI input. If the

input frequency is beyond the 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 22 factory pre-set video modes. Pre-

defined mode parameters will be recalled if the

operating mode is one of those pre-set modes. 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. The screen

parameters can be adjusted by the front bezel

control buttons and then saved as a user defined

mode. The monitor shall include all the preset

video timings shown in following form.

d) OSD Control Factory Default Values:

The OSD controls shall have the following factory

default values:

Brightness: 77 Contrast: 50

Color Temperature:

Warm(6500)/Cool(9300)/User (R/G/B all are 100)

Horizontal Position of Screen: 50

Vertical Position: 50

Preset Timing Chart

H-Active V-Active I/P H-Total

H-Back

Porch

V-Total

V-Back

Porch

H-Freq.

(kHz)

V-Freq.

(Hz)

P-Freq.

(MHz)

640 480 p 800 48 52 5 33 31.5 60 25. 2

720 480 p 858 60 52 5 30 31.5 60 2 7.027

720 576 p 864 68 62 5 39 31.2 50 27

1280 720 p 1650

220

750

20

45 60 74. 25

1280 720 p 1980 220 75 0 20 37.5 50 74.25

1920 108 0 i 2200 148 56 2 15 33.75 60 74.2 5

1920 108 0 i 2640 148 56 2 15 38.12 50 74.2 5

1920 108 0 p 220 0 148 1125 36 67.5 6 0 148.5

1920 108 0 p 264 0

148

1125

36

56.25 50 148.5

Input Voltage Range

The operating range shall be from 90 to 264

VAC sinusoidal for all models specified.

Input Frequency R ange

Input p ower frequency r ange shall be from 47

to 63Hz.

Power Consum ption

Power consumption for the monitor sha ll be

less than 55W over the specified voltage and

frequency ranges. In power off mode the

power consumption will be less than 1W (at

90VAC~264VAC).

Line Fuse

The AC input shall be fused and become

electricall y open as a result on an unsafe

current level. The fus e may not be user

replaceable.

Initial Cold Start

The power supply shall start and function

properly when under full load, with worst cas e

conditions o f input voltage, input frequency,

operating temperature, an d cold backlight

lamps.

Inrush Current

The inrush current must be limited to 42A

when operated at 120VAC, and 80A when

operated at 220VAC. In - rush current is

measured at an ambient temperature of 25°

C, with th e unit temperature stabilized in the

power - off

Hot Start Cycle

The power supply shall not be damaged whe n

switched ON for one second and OFF for one

secon d for seven consecutive times after

operating for one hour at full load, 25°C, and

nominal input line voltage.

Under Voltage

The power supply shall contain protection

circuitry such that the application of an input

voltage b elow the minimum s pecified in this

table sha ll not cause dama ge 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.

DC Output 5.1+/-0.3V (1.8A); 22.5+/-2V (1.6A)

Table 2 AC TO DC Converter Requirements

6

ACER G245H

1. Product Specification

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Preset video timings (Digital Inputs)

1.3.4.3 Mode Recognition Pull-in:

The monitor shall recognize preset modes within

a range of +/- 1KHz for horizontal and within a

range of +/- 1Hz for vertical.

1.3.5 Controller Requirements:

1.3.5.1 General Requirements:

The monitor shall include a controller which is

capable of converting the analog RGB signal or

DVI digital signal to the panel. The controller will

include a PLL, A/D converters, TMDS receiver

and other circuitry necessary to perform its function. The PLL shall be stable enough to

1.3.5.2 Video Stretching:

The monitor shall have the function to “stretch”

1.3.5.3 Panel Timing and Interface:

The controller supplied with the monitor shall

1.3.6 DC - AC Inverter Requirements:

The frequencies used by the DC - AC inverter should be

carefully selected to prevent any noticeable effects on the

screen (such as a rolling effect).

1.3.7 Power Supply Requirements:

The AC to DC power supply for this monitor shall be an

integrated power supply. This power supply shall have an

IEC receptacle for main power input and provide sufficient

power for backlight assembly, interface board and panel.

And it should meet all requirements specified in Table 2.

ensure a stable image.

the video signal, so that an input signal from the

computer in any resolution smaller than 1920 x

1080 is automatically expanded to fill the entire

screen.

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.

1.3.8 Display Communications Channel:

The monitor shall provide a display communication

channel that conforms to VESA DDC2B hardware

requirements. This configuration shall contain the 128-

byte EDID file as specified by VESA E-EDID Standard.

Once the EDID is programmed the write protection

function will enabled. So the EEPROM data cannot be

overwritten.

1. Product Specification

ACER G245H

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7

1.4 Flat Panel:

1.4.1 General Requirements:

The panel shall be a UXGA resolution 24” diagonal

TFT-LCD.

1.4.2 Panel Timings:

The controller in the monitor shall translate video

timings from the PC to meet the timing requirements

listed in Panel Specification. Under no circumstances

may the controller supply the panel with timings that

may result in damage. The controller shall insulate

the panel from the PC, so that the panel shall always

be driven according to its specification regardless of

the timings being sent from the PC.

1.4.3 Polarizer Hardness:

The outer face of the front polarizer panel shall be

covered with a coating with a 3H hardness value.

1.4.4 Backlight Requirements:

1.4.4.1 General Requirements:

The lamps shall have a continuous operating

life of at least 50000 hours at 25 . The whole

set/system MTBF at least 75000 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 within 2

seconds when monitor power switch is

or when the monitor is restarted from

power down mode.

Test conditions are as follows:

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

°C

Temperature--------------------------10°C 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 meet the SPEC.

°C

pressed

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 will follow the Panel Specification 300 to 700 lux.

1.4.5.4 Allowable Defects:

No cosmetic defects are allowed except those

specified below. The conditions of visual

inspections are as follows:

- Viewing distance: 35~50cm

- Ambient illumination: 300 to 700 Lux ( nominal

500Lux)

- Ambient temperature: 25±5°C

- Viewing angle: The surface of the module and the

inspector's line of view shall be at

90 degrees.

- Display pattern: Pure R , G , B , Black and White

- Inspection area: Active area

1.4.5.5 Defect Terminology:

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 appears 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:

When the unit lights, lines appear light (white) with

display patterns dark and do not vary in size.

Physical damage to the polarizer does not damage

the glass.

Average Diameter

Smaller of (L+W)/2 or

L/20 + 2W

Acceptable

Number

Minimum Separation

< 0.1mm Non countable N / A

0.1mm - 0.3mm 10 15mm

0.31mm - 0.5mm 10 15mm

0.51mm - 1.25mm 5 15mm

1.26mm - 2.5mm 3 25.4mm

2.51mm - 0.3mm 3 25.4mm

Greater than 3.75mm None Not applicable

Table 4. Descriptive Terms

8

ACER G245H

1. Product Specification

Go to cover page

Polarizer Dent:

When the unit lights, spots appear light (white) with

display patterns dark and do not vary in size. Physical

damage to the polarizer 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.

Mottling:

When the unit lights, variation / non - uniformity (splotch)

appears light (white) with the display and might vary in

size.

Dim Line:

When the unit lights, line(s) in the minor (vertical) or

major (horizontal) axis appear dim, but not completely

on or off.

Cross Lines Off:

When 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).

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 non-uniformity 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 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 .

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.

1.5 Optical Characteristics:

1.5.1 Brightness Uniformity:

The uniformity is determined by using a photometer

(CA-210) to measure the 9 points luminance in front of

monitor after at least 30 minutes warm up. It shall be

test at 1920x1080/60Hz mode and full white square

pattern with contrast / brightness in default value. The

values specified are at an approximate distance 20cm

from the LCD surface and at 0 viewing angle.

The 9 test points are defined as below:

The brightness uniformity is calculated as below:

Brightness uniformity <= 25%

Remark: The black luminance non-uniformity are no

defined by panel spec, therefore, we don't define the

spec, for black luminance non-uniformity.

1.5.2 Contrast Ratio (CR) :

1.5.2.1 General CR: The contrast ratio is determined by using a

photometer (CA-210) to measure the maximum

and minimum luminance in front of monitor after

at least 30 minutes warm up. It shall be test at

1920x1080/60Hz mode and full white/full black

square pattern with contrast/brightness in default

value. The values specified are at an

approximate distance 20cm from the LCD

surface and at 0 viewing angle. The contrast

ratio is calculated as below:

CR=(Max. full white luminance)/(Max. full black

luminance)

CR = 1000:1 typ. (typ)

1. Product Specification

Width 574.8mm

Height (including stand) 417.8mm

Height (without stand) 357.8mm

Depth (including stand) 194.4mm

Depth (without stand) 60mm

Pack Dimensions (Lx W x H) 647mmx136mmx480mm

Unpacked Unit Weight 5.19kg

40” container loading, palletized 1176 units

Maximum Stacking Height 5 layers, 2043mm

ACER G245H

Go to cover page

9

1 .5.2.2 ACM (Auto Contrast Management):

The input image signal source may be various

levels of illumination, and this ACM unit can

analyze it as histogram for the various levels of

illumination, according to the analyzed result, when

input a low-luminance level image, display

brightness will be adopted to corresponding low

level, so that enhance the contrast rate, this

facilitates visual ergonomics enhancement .

The monitor should be CR >80000:1 when ACM

function is active.

1.5.3 Response time:

The response time is defined as below:

Tr + Tf : 5 msec typ.

Remark: Optical response time vs gray scale.

Test condition: brightness set to max. and contrast set to

default

1.5.4 Viewing angles:

The viewing angles are measured at CR >10 as below:

1.5.6 Brightness:

The uniformity is determined by using a photometer

(CA-210) to measure luminance on the center of

screen after at least 30 minutes warm up. It shall be

test at 1920x1080/60Hz mode and the brightness

and contrast OSD setting for 100%. The values

specified are at an approximate distance 20cm from

the LCD surface and at 0 viewing angle. The full

screen white center luminance at User mode color

temperature shall be 300cd/m² typ. And > 250cd/m²

min. Full screen black pattern luminance at center

should be < 1cd/m².

1.6 Environmental Requirements:

1.6.1 Temperature Ranges:

Operating Temperature: 5°C to 35°C

Shipping Temperature: -25°C to 60°C

Storage Temperature: -25°C to 60°C

1.6.2 Humidity

Operating (non-condensing): 20% to 90%

Shipping (non-condensing): 10% to 90%

Storage (non-condensing): 5% to 90%

1.6.3 Altitude

Operating 0 to +12,000 feet [3,658m].

Equivalent to 14.7 to 10.1 psia.

Shipping (Non-Operating) 0 to +40,000 feet

[12,192m].

Equivalent to 14.7 to 4.4 psia.

1.7 Mechanical:

Horizontal Left: 80 degrees typ.

Right: 80 degrees typ.

Vertical Up: 80 degrees typ.

Down: 80 degrees typ.

1.5.5 Chromaticity:

The color chromaticity is measured by a photometer

(CA-210) at 1920x1080/60Hz mode and full white square

pattern with contrast/brightness in default value. The x and

y co-ordinates for reddish, bluish and user preset mode

shall be as below:

Warm (6500K):

x=0.313 +/- 0.02

y=0.329 +/- 0.02

Cool (9300K):

x=0.283 +/- 0.02

y=0.297 +/- 0.02

41.8

57.5

G245H

31.8

6

35.8

19.4

unit:cm

Key Function Description

Power Pow er on/off m onito r

A Input Switch

B Volume Mana gement OSD

C Main Menu OSD

D Auto Conf ig

E Trigger the Ac er eColor Ma nagement

10

ACER G245H

2. OSD Menu

Go to cover page

2.1 Function Menu:

1). Display Function Menu when user press any function

button.

2). Layout as following figure:

2.2 Key Definition:

power

2.3 Main OSD Menu:

2.3.1. OSD layout:

1). Display OSD menu when user press “C” button in

function menu

2). Layout as following figure

Acer logo

Funct ion Icons

Infor mation Bar

OSD layout for main menu

a. OSD layout for each function page

Item page for each function group

b. Icons introduction

Function

Status

Non-Focus

Focus

Focus on

Item-page

c. Item page status

Status Display type

Non-focus

settings

information

Picture OSD Setup Information

Item focused

Item selected

2.3.2 Key operation:

a. Key operation at function icon

picture

Focus at main icons

OSD

b. Key operation at items page, no item selected

Key Function Descrip tion

Power Power off the monitor

A Mo ve the focus down

B Mo ve the focus up

C Select function item for sub_me nu

D Exit from the item page to icon pla ce

E Trig ger the Acer eColor Manage ment

Item Description

Auto Config Please Wait

When user press hot key "Auto" will show this message, and the monitor do the Auto config function.

Input Not Support

When the Hsync Frequency, Vsync Frequency or Resolution is out of the monitor support range, will show th is message. The message will be flying.

Cable Not Connected

When the video cable is not connected, will show this message. This message will be flying.

No Signal

When the video cable is connected, but there is

no active signal input, will show this message,then enter power saving.

Please Wait

After user trigger the reset function, system will show this message notice user the reset is in proceeding.

Key F unction Description

Power P ow er off the mo nitor

A Move the focus down

B Move the focus up

C Select fu nction item for adju stment

D Exit from t he ite m page to icon place

E Tr igger t he Ace r eColor Manag eme nt

Key F unction Description

Power P ow er off the mo nitor

A Inc rease the setting value for t arget item

B Descr ease the setting vallue for targe t item

C No functio n

D Exit from ite m selected status

E Tr igger t he Ace r eColor Manag eme nt

Key Function Descrip tion

Power Power off the monitor

A Mo ve the focus down

B Mo ve the focus up

C

Enter to the item page

(It has no function at the information pa ge)

D Exit the OSD menu

E Trig ger the Acer eColor Manag ement

2. OSD Menu

2.4 Acer eColor management:

Display Acer eColor Management OSD when user press

ACER G245H

11

Go to cover page

“e” button at Function menu or trigger this function in OSD

menu/picture page.

Focus at item page

c. Key operation at items page, item selected

Item is selected

d. Key operation at items page, item selected

2.5 Volume management OSD:

a. Display volume management OSD, when user press <

or > button on front bezel.

b. Layout as following figure, key operation at items page.

(No item selected)

Key Function Description

A Volume up

B Volume down D Close the Volume OSD

2.6 OSD Message:

Item is selected

12

ACER G245H

Go to cover page

3.1 Packing E xploded Diagram

3. Exploded Diagram

3.2 Product E xploded Diagram

21 HINGE_ASSY 1 60.7C331 .001 20 BASE_STEEL16 1 31.7C303 .001 SGCC T= 1.6mm 19 RISER_FRONT 1 42.7C323 .001 SD-0150(ABS) 18 RISER_BACK 1 42.7C324 .001 ABS 17 BASE 1 42.7C325 .001 ABS 16 ASSY 1 15 HINGE_COV ER_L 1 TBD 14 WALL_MOUNT_MATEL 4 33.7A502.001 SGCC 13 REAR_COVER_AUO 1 42.7C315 .001 ABS 12 RC_ASSY 1 11 LENS 1 TBD 10 OSD_KEY_BD-01 1 TBD

9 POWER_KEY 1 42.7C322 .001 ABS 8 FUNCTION_KEY 1 42.7C321 .001 ABS 7 FRONT_ COVER_AUO 1 41.7C305.001 ABS

6 FC_ASSY 1

60.7C317 .001(HDMI)

60.7C318 .001(Non HDMI ) 5 CHASSIS_WITHOUT_PANEL 1 4 PANEL_ASSY 1 3 CHASSIS_ASSY 1 2 HEAD_DES IGN_ASSY 1 1 MECH_DESIGN_ASSY 1 TBD

Index Componment Description Qty Part_number M aterial

4

3. Exploded Diagram

ACER G245H

13

Go to cover page

3

14

1

2

7

13

12

6

21

15

19

18

16

17

11

10

9

8

5

20

14

ACER G245H

Go to cover page

4. Assembly and Disassembly Procedures

4.1 Assembly Procedures:

Connect of power board with P301 of interface

P802

board. Connect P003 of power board with P308 of

interface board. Connect function key cable with

S1

P309 of interface board. Connect speakers’ cable to

P001 of power board.

speak ers’ cabl e

funct ion key cable

Put a bracket chassis base on a protective

cushion. Locate above circuit boards into the

bracket chassis base. Use a Phillips-head

screwdriver to tighten No.1~6 screws. Be sure the

S2

circuit boards and bracket chassis base are firmly

attached. (No.1 Screw size=M4x8;

No.2~6 Screw size=M3x6, Torque= ~ kgfxcm)

P001

P802

P301

P309

P003

6 8

Fix function key cable with the hook and make it

the hole.through

Use a Hex-

P308

S4

Turn over the bracket chassis module.

head screwdriver to tighten No.1~4 screws.

(No.1~4 Screw size=M3x8, Torque=5±1kgfxcm)

S5

Use a Philips-head screwdriver to tighten No.5~7

screws.

(No.5 Screw size=M3x6, Torque=5±1kgfxcm;

No.6~7 Screw size=M3x10, Torque=5±1kgfxcm)

7

6

5

4

1

3

2

5

6

3

Fix left speaker and right speaker on the speaker

holder with caps. Fix speakers’ cable with the hook

S3

of bracket chassis base.

Cap

Panel preparation: Examine the panel surface

according to the Inspection Criteria. Turn over the

panel to let screen faced down and then put the

S6

bracket chassis module on the back of LCD panel.

Connect FFC cable to LCD panel.

4

1

Hook

4. Assembly and Disassembly Procedures

ACER G245H

Go to cover page

15

S7

S8

Plug lamp cables to the connectors of power board.

Place a front bezel on a protective cushion and

then place the assembled bracket chassis module

into the front bezel. Adjust the position of bracket

chassis module and insert the two tips into holes of

bracket chassis module.

S11

Put a rear cover on the assembled unit and push the

rear cover on the positions marked as No.1~5 in

priority order for mechanisms engagement.

4

3

5

4

3

S9

Connect the function key cable to a function key

board and then locate the function key board on

the correct position.

S12

S13

2

1

Use a Phillips-head screwdriver to tighten No.1

screw.

(No.1 Screw size=M3x10, Torque= ±1kgfxcm) 5

1

2

1

Use a Phillips-head screwdriver to tighten No.1~4

screws for .

(No.1~4 Screw size=M4x12, Torque=9±1kgfxcm)

assembling hinge and stand

S10

Fix the function key cable with the hook as below

photo shown.

1

3

2

4

16

ACER G245H

Go to cover page

Use a Phillips-head screwdriver to tighten No.1~4

S14

screws and then assemble hinge covers. (No.1~4 Screw size=M4x7, Torque= ±1kgfxcm)12

4. Assembly and Disassembly Procedures

S15

4

2

Assemble the base as below photo shown.

1

3

S18

S19

Take a EPE bag to cover the LCD monitor. Remove

the base by depressing the release button.

Take two cushion foams: hold the right side of LCD

monitor with R foam and hold the left side with the

other one. Put the base and user’s manual in the

specific position as below photo shown.

user’s manual

S16

S17

Lift up the monitor, provide power supply and input

video signal to it for functionality check.

Turn off the monitor and unplug all cables. Stick a

screen protector on the front bezel with adhesive

tapes.

S20

base

Move the whole unit into a carton and put all

accessories including power cable, D_sub cable,

audio cable and DVI cable on specific position as

below photo shown. Seal the carton.

Audio cable

D_sub cable

DVI cable

Power cable

4.2 Disassembly Procedures:

4. Assembly and Disassembly Procedures

ACER G245H

Go to cover page

17

S1

S2

Open the carton with a proper tool.

Take out product and accessories from the carton.

S5

S6

Use a Phillips-head screwdriver to remove No.1~4

screws.

(No.1~4 Screw size=M4x7, Torque=12±1kgfxcm)

4

2

Use a Phillips-head screwdriver to remove No.1

screw.

(No.1 Screw size=M3x10, Torque=5±1kgfxcm)

1

3

S3

S4

Remove the two cushion foams. Take out the

monitor from EPE bag and tear off screen protector.

Let the screen faced down.

Use a slot driver to remove hinge covers.

S7

1

Turn over the LCD monitor to let the screen faced

up. Place a cloth on the panel where you are

working to protect the panel. Then wedge your

fingers between the front bezel and the panel for

unlocking the mechanisms.

18

ACER G245H

Go to cover page

4. Assembly and Disassembly Procedures

Turn over the LCD monitor to let the screen faced

S8

down and then remove the rear cover.

Release the function key cable from the hook.

S9

S11

NOTE: The function key board had been highlighted with the yellow rectangle as above image shown. Please detach the function key board and follow local regulations for disposal.

Remove the front bezel and put the bracket

chassis module on a working table with

protective cushion.

S10

Take out function key board from the front bezel and

unplug it from function key cable.

S12

Unplug lamp cables follow the direction as below

picture shown.

4. Assembly and Disassembly Procedures

ACER G245H

Go to cover page

19

S13

S14

Push the ear lock, then remove the FFC cable

from the LCD panel.

Take away panel module then put the bracket

chassis module on the protective cushion .

S16

S17

Turn over the bracket chassis module. Take out

function key cable from the hole and release it

from the hook.

Release the speakers’ cable from the hook and

then remove both of the speakers from the bracket

chassis module by pulling out the caps of .the

speaker holder

Cap

S15

Use a Hex-head screwdriver to remove No.1~4

screws for unlocking the DVI and D-

SUB connectors.

(No.1~4 Screws size=M3x8, Torque=5±1kgfxcm)

Use a Philips-head screwdriver to remove No.5~7

screws for unlocking mechanisms.

(No. 5 Screw size=M3x6, Torque=5±1kgfxcm

No. 6~7 Screw size=M3x10, Torque=5±1kgfxcm)

7

6

mechanisms of

5

3

4

1

2

S18

S19

Hook

Use a Phillips-head screwdriver to remove No.1~2

screws for unlocking the interface board.

(No.1~2 Screw size=M3x6, Torque= ~ kgfxcm).6 8

2

NOTE: The interface board had been highlighted with the yellow rectangle as above image shown. Please detach the interface board and follow local regulations for disposal.

Use a Phillips-head screwdriver to remove

No.1~4 screws for unlocking the power board.

(No.1 Screw size=M4x8;

No.2~4 Screw size=M3x6, Torque= kgfxcm)6~8

1

20

ACER G245H

Go to cover page

4. Assembly and Disassembly Procedures

S20

2

3

NOTE: The power board had been highlighted with the yellow rectangle as above image shown. Please detach the power board and follow local regulations for disposal.

Remove the disconnect

all the cables.

bracket chassis base and

4

1

5. Troubleshooting

Does OSM display when you

push MENU key.

Yes

No

Proceed "No OSM display"

section.

Check if the sync signal from

computer is output and if the

video cable is connected

normally.

OK

Proceed "checking the resolution

change IC movement" section.

NG

Input 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.

5.1 No displa y on the screen (Screen is black a nd colour of LED is amber)

ACER G245H

Go to cover page

21

Is backlight lit?

Refer "Checking the backlight unit" section"

OK

NG

Does computer output RGB video

signals?

OK

Check OSM menu is display on

screen when you push the

"MENU" key.

Proceed "Abnormal sreen"

dection"

OK

NG

Check the video cable for failure. Check the host for

output signal is all black or not.

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

2) Reconnect the video cable.

3) Change the video cable.

NG

Check if the LCD video signal cable is connected

between the Interface Board and LCD module.

OK

Failure Point

The LCD video signal cable is disconnected.

22

ACER G245H

5. Troubleshooting

Go to cover page

5.2 Nothing d isplays on the screen (Scree n is black and colour of LED is blue )

5. Troubleshooting

Continue

Check the 5V power

supply for P301 pin 4,5,6.

OK

Check the I301 pin2 if voltage is

3.3V

OK

NG

Check if the voltage

between I301 pin2

and pin3 is above -

0.7V

OK

Failure Point I301 is failure.

Check the P307 all LVDS

signals.

Failure Point

1) Printed wire broke between P307 and I308 LVDS signals.

2) I308 is failure.

OK

NG

Failure Point

1) The LVDS cable broke between P307 and LCD module.

2) LCD module is failure.

NG

Proceed "Checking the DC/DC

converter circuit" section.

NG

Check the I301 pin2 if voltage is 5V

Failure Point

1) FB301 is open.

OK

Check the I305 pin2 if voltage is

1.2V

OK

NG

Proceed "Checking the DC/DC

converter circuit" section.

Check the input voltage level whether was

changed when pressed function keys on the

P308 pin1

Failure Point

1) Printed wire broke between P309 pin 1 and I308 pin 108.

Check if the voltage on I308 pin

108 that is from 3.3V to 0V.

OK

NG

Failure Point

I308 is failure

OK

NG

5.2 Nothing d isplays on the screen (Scree n is black and colour of LED is blue ) continued

ACER G245H

Go to cover page

23

Is +22V supplied to inverter

PWB ? (by the power board)

OK

NG

Failure Point

1) Power board of Inverter part failure.

Check the BKLT_EN signal of the

DC input P301 pin 2 at TTL high

level.

OK

NG

Failure Point

1) printed wire broke between P301 pin2, R304 and I308 pin

101.

2) I308 is failure.

Check the BKLT_ADJ signal of

the input P301 pin3 from I308

pin102 is a PWM signal.

OK

NG

Failure Point

1) printed wire broke between P301 pin3, R501 and I308 pin102.

Failure Point

1) Back light unit of LCD module is failure.

2) Inverter Cable disconnect

24

5.3 Checking th e back light unit

ACER G245H

Go to cover page

5. Troubleshooting

5.4 Abnorma l screen for VGA

Check the R, G, B video signal from

computer input on P302 of D-sub

connector.

OK

NG

Failure Point

1) No R, G, B video signals output from host computer, check computer.

2) Video signal cable disconnection.

Check the R, G, B input video signals

on I308 pin25, 27, 30 respectively that

their level is 0.0 to 0.7Vp-p.

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 I308 pin30.

2) Video cable is failure.

3) FB306,B327,C315 is open.

4) R326 is short or open.

NG

OK

Check all LVDS signals being output

to P307 from I308?

Failure Point

Printed wire broke between I308 and P307.

NG

OK

Proceed "Checking the resolution

change IC movement" section.

5. Troubleshooting

ACER G245H

Go to cover page

25

Check the DVI video signal from

computer input on P303 of DVI

connector.

OK

NG

Failure Point

1) No DVI video signals output from host computer, check computer.

2) DVI Video signal cable disconnection.

Check the DVI input video signals on

I308 pin 12,13,14,15,16,17,18,19

respectively that differential input

voltage is 150 to 1200mV, and input

commond mode voltage is 3.3V.

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 I308 pin 12. 13.

2) Video cable is failure.

3) R350, R355 open.

NG

OK

Check all LVDS signals being output

to P307 from I308?

Failure Point

Printed wire broke between I308 and P303.

NGOK

Proceed "Checking the resolution

change IC movement" section.

26

5.5 Abnorma l screen for DVI and the same for HD MI

ACER G245H

Go to cover page

5. Troubleshooting

5.6 Abnormal OS M display adjust problem

Check the input TTL level whether is changed

when pressed function keys on the P309 pin 5,

6 (normal is high level, when push button,

generated low level)

OK NG

Failure Point

1) Function key wire disconnection.

2) Function key wire is failure.

3) Function key board is failure.

Check the input TTL level of I308 pin 50, 51

whether is changed when pressed function

keys.

OK NG

Failure Point

1) Printed wire broke among P309 pin5, R503 and I308 pin50

2) Printed wire broke among P309 pin6 ,R504 and I308 pin51

3) C393, C394 is short.

4) D352, D353 is short

Failure Point

I308 is failure.

5. Troubleshooting

ACER G245H

Go to cover page

27

Confirm the host computer supplies

DDC2B mode.

OK

NG

OK

Check the output signal of serial data /

clock on I308 pin 59, 58.

OK

NG

Check the voltage on P302 pin 9 that is

power DC 5 V.

NG

Check the signal on P302 pin12, 15 that

is serial data / clock signal.

OK

NG

Failure Point

1) Printed wire broke among I308 pin58,59,R320,R321 and P302 pin12,15

2) I308 maybe failure.

3) R314 ,R315 is open.

4) D306 or D308 or C320 or C321 is shorted.

Failure Point

The Video cable is failure.

Failure Point

I308 is failure.

Failure Point

The host machine is not communicating in DDC2B mode.

Failure Point

The Video cable is failure.

28

ACER G245H

Go to cover page

5.7 Abnorma l plug and play operation for VG A

5. Troubleshooting

Confirm the host computersupplies

DDC2B mode.

OK

NG

Failure Point

The host machine is not communicatiog in DDC2B mode.

OK

Check the output signal of serial data /

clock on I308 pin 122,121

OK

NG

Failure Point

I308 is failure.

Check the voltage on P303 pin14 that is

power DC 5V.

OK

NG

Failure Point

The Video cable is failure.

Check the voltage on P303 pin 7, 6 that is

serial data/clock signal.

OK

NG

Failure Point

The Video cable is failure.

Failure Point

1) Printed wire broke between I308 pin122, 121, R344, R345 and P303 pin7,6

2) I308 maybe failure.

3) R338, R339 is open.

4) D320 or D321 or C339 or C342 is shorted.

Check the voltage on P303 pin16 that is

4.5V.

NG

Failure Point

1) Printed wire broke between P303 pin14 and pin16.

5.8 Abnorma l plug and play operation for DV I and the same for HDMI

ACER G245H

Go to cover page

29

Check the horizontal sync signal on P302

pin13 TTL level.

OK

NG

Failure Point

Video cable is failure.

Check the horizontal sync signal on I308

pin 22 TTL level.

OK

NG

Failure Point

1) Printed wire broke between P302 pin13 and I308 pin22.

2) FB304, R405 is open.

3) D307, R319 or C322 is short.

Failure Point

Proceed "Checking the resolution change IC movement" section.

Check the vertical sync signal on P302

pin14 TTL level.

OK

NG

Failure Point

Video cable is failure.

Check the horizontal sync signal on I308

pin21 TTL level.

OK

NG

Failure Point

1) Printed wire broke between P302 pin14 and I308 pin21.

2) FB305 or R331 is open.

3) D310, R318 or C313 is short.

Failure Point

Proceed "Checking the resolution change IC movement" section.

30

5.9 Checkin g the interface circuit of syn c signal

5. 9.1 Checking the control cir cuit of horizontal sync plus e

ACER G245H

Go to cover page

5. Troubleshooting

5.9.2 Checking the contr ol circuit of v ertical sync pluse

5. Troubleshooting (continued)

Check +3.3V supply on I304 pin2.

OK NG

Proceed " Checking the DC/DC converter circuit"

section.

Check +1.2V supply on I305 pin 2.

OK NG

Proceed " Checking the DC/DC converter circuit"

section.

Check X301 27MHz clock input to I308 pin 127 and

128 at TTL level.

OK NG

Failure Point

1) Printed wire broke between X301 and I308 pin 127,

128.

2) C351, C352 is short or open.

3) X301 failure.

Check I308 pin 125 RSTB signal is high level at

normal operation.

OK

Check I308 pin 115,116,117 SPI signal.

OK NG

Failure Point

1) Printed wire broke between I308 pin 115, 116, 117 and I309 pin 2, 5,6.

2) I309 is failure.

Failure Point

I308 failure.

Failure Point

1) Printer wire broke between I308 pin 125 and

2) C391 is short.

3) I308 is failure.

NG

5.10 Checki ng the resolution change IC mo vement

ACER G245H

Go to cover page

31

Check the 5V is output from P301 pin

4,5,6.

OK

NG

Failure Point

1) Power wire disconnection.

2) Power board is failure.

Check the 5V is input to I304 pin3.

OK NG

Failure Point

1) Printed wire broke between P301 pin 4,5,6 and I304 pin3.

Check the 3.3V is output from I304 pin2, 4.

Failure Point

I304 is failure or C308 short.

OK

NG

Check the 3.3V is input to I305 pin3.

OK

NG

Failure Point

1) Printed wire broke between I304 pin2. 4 and I305 pin3.

Check the 1.2V is output from I305 pin2,4.

Failure Point

I305 failure or C311 short.

OK NG

Failure Point

1) Printed wire broke between I304 pin2,4, I305 pin3

32

5.11 Check ing the DC/DC converter circ uit

ACER G245H

Go to cover page

5. Troubleshooting

5.12 No power

Check output voltage +5V, +22V are right or not

NG

OK

Check power switch is turn on or not

Check power cord (P801), signal cable (P302), P101,

P102, P103, P104 is connected right or not

Check pin 6 of I801 have same pulse or not

Check pin 1 of T802 have same pulse or not

Check peak voltage of R811 triangle pulse is up to 0.52V

or not

Check feedback circuit around I802, I803 and the other

components and repair them

It is not power board problem

Turn switch on

Check F801, D801, P801 and repair

them

Check R807, D804, I801 and repair

them

Check peripheral component of I801

and repair them

Check Q803, R813, R814, D806

and repair them

Check D804, R807 and repair them

Repair them

OK

NG

OK

NG

Connect it right

OK

NG

OK

NG

Check C807 is over 11V or not

OK

NG

OK

NG

OK

NG

Check D809, D810, C818, C824, C823, C817. C822,

T802 have same short circuit or the output +5V +22V is

over load

Check C805 is about DC140V-330V or not

OK

NG

5. Troubleshooting

ACER G245H

Go to cover page

33

Check C102 pin is around 5V. ON/OFF pin is over 2V.

Brightness pin is external PWM

OK NG

Check pin 2 of I101 is 5V

It is not inverter invert problem

Check R105, C102 and repair

them. Check printed wire

Check R116, R115, R125, R126, C119, R121, R122, C115, R117,

R119, D106, D114, D109, D118

and repair them

Check R107, R118, C104, I101

and repair them

Repair I101

Check D116, D117, R111, D107, D108, D120, D121, R130, D112, D113, R128, R120 and repair them

Repair them

OK NG

Check CCFL and repair them. Lock

P101, P102, P103, P104 tightly

OK

NG

Check P6 of I101 is over 3.1V

OK

NG

OK

NGOK

Check P101, P102, P103, P104 are connected right

OK

NG

OK

Check pin 13 of I101 is triangle pulse

Check pin 12 of I101, there is soft start edge up to 4V

and pin 4, 5. there is some pulse outputs

Check pin 5 of I101, there is around 1.25V from output

detection

Check SW MCS (Q104, Q105) work right

Check transformer (T101) to work it and repair it

34

ACER G245H

Go to cover page

5.13 Checki ng the Inverter Circuit

5. Troubleshooting

6. Firmware Upgrade Processes

Notice: (1) If the firmware version is shown as same as the current F/W version which you got from Wistron engineers, you must exit the ISP programming process. (2) The ISP programming is only required when the firmware version is previous version compared to the current version.

6.1 Hardware Configuration:

PC/HOST

Connect V GA cable bet ween monitor a nd kit

Connect U SB cable bet ween PC and kit

ACER G245H

35

Go to cover page

If it shows “No USB Device”, there is a problem with

communication. You should confirm your USB device

whether be detected by your PC device management

or reconnect the USB cable.

6.2 Realtek F/W :

S1. Launch the utility of “ ”

Upgrade Processes

DebugTool_V6.X

S2. Select “USB” and “Serial Flash” for 1A1D1H. Select “USB” and “RTD2122” for 1A1D and 1A.

S3. Press [ISP] icon to continue.

36

ACER G245H

Go to cover page

S4. Select [64K] icon to load firmware image.

a. For 1A1D1H:

Select [64K] to choose

“G245H_OD_RH_F003_0907.H00”.

“G245H_OD_RH_F003_0907.H01”,

“G245H_OD_RH_F003_0907.H02” and

“G245H_OD_RH_F003_0907_Extend.hex” will be

loaded in “64~256” automatically.

9/10

~

192

128

~

192

256

6. Firmware Upgrade Processes

E:\Service manual\A CER G245H\ FW-code\G245 H_OD_RH_F0 03_0907.H0 0

E:\Service manual\A CER G245H\ FW-code\G2 45H_OD_RH_F0 03_0907.H0 1

E:\Service manual\A CER G245H\ FW-code\G245 H_OD_RH_F0 03_0907.H0 2

E:\Service manua l\ACER G245H\FW-code\ G245H_OD_RH_F003_09 07_Exten d

9/10

~

192

128

~

192

256

b. For 1A1D and 1A:

Make sure [Bank 2] is selected before loading firmware

image.

Select [64K] to choose

"G245H_DU_M001_0908.H00" for 1A1D.

"G245H_DU_M001_0908.H01" and

"G245H_DU_Extend_M001_0908.hex" will be loaded

in “64~160” automatically.

Select [64K] to choose

"G245H_AU_M001_0908.H00" for 1A.

"G245H_AU_M001_0908.H01" and

"G245H_AU_Extend_M001_0908.hex" will be loaded

in “64~160” automatically.

S5. Press button.

The screen will show “PASS”

when firmware upgrade process finished.

S6. Check firmware version:

Input video signal to the monitor. Press “Power” and

“e” button simultaneous to turn on the monitor, then

press “Menu” button, F/W version will be shown as

example of G245H_1A1D_M001_0908.

power

menu

e

7. Writing EDID Processes

Please copy “INI.INI” file into Windows folder“*:\WINDOWS”

before writing EDID. ("*" is the drive letter designator for your current system drive of O.S) Moreover, please be aware of not changing any parameters in the 'INI.INI' file.

7.1 Preparation:

Hardware Configuration:

1. Connect the PRINTER PLUG of DDC FIXTURE with the

printer port of PC. (Refer to figure 1)

2. Plug USB A PLUG of DDC FIXTURE to USB socket of

PC. (Refer to figure 2)

3.Extend the DVI cable on DVI EXTENDING SOCKET of

DDC FIXTURE. (Refer to figure 3)

4.1 Connect the D-sub plug of Chroma with D-SUB PLUG

of DDC FIXTURE. (Refer to figure 4)

4.2 Take a video cable then connect the D-SUB PLUG and

the D-sub socket of monitor. (Refer to figure 5)

5. Connect the extended DVI cable to DVI socket of

monitor.(Refer to figure 5)

6. Re-confirm all the connectors are connected well.

DVI EXT ENDING

D-SUB P LUG

SOCKE T

ACER G245H

37

Go to cover page

7.2 Writing EDID Processes:

S1. Select “AcerDigedid_IP” to execute.

S2. Select “Model” and key in password “cedid” then select

model which one you want to write EDID code that it

depends on panel type.

cedid

USB A

SOCKE T

PRINT ER PLUG

USB A PLUG

1

4

2 3

5

DVI EXT ENDING

6

SOCKE T

CAUTION: The timing of Chroma shall be setup at

T254/P41 before data recording. The detail setting

parameter from chroma. Please See below photo:

S3. Choose “Write [W]” from menu then select “Scan S/N

And Write EDID And Test DDC”.

38

ACER G245H

7. Writing EDID Processes

Go to cover page

S4. Key in series number (22 characters) in the input column

and below empty column.

Press “Write” button after key in S/N.

S5. When EDID was written successfully that will show

below message on the screen.

G245 H

L560 5179635 0000143 02

2009

G245 H

L560 5179635 0000143 02

2009

37

17

37

17

8. ACER G245H SCHEMATICS and LAYOUTS:

8.1 _LCD_ 1A1D1H)

ACER G245H_INTERFACE BOARD (

8.1.1

BLOCK DIAGRAM

1 2 3 4 5 6 7 8 9 10 11 12 13

A

B

BKLT_EN, BKLT_ADJ AUDIO_EN, VOLUME

LCD Module

P307 LVDS output

(connector to LCD panel)

LVDS

A

B

ACER G245H

Go to cover page

39

C

D

E

F

Power & Inverter &Audio Board

AC

110/220V

Input

AUDIO Input

Function Key Board

P301

P309

I306 24LC02 (HDMI EDID)

DDC_SCL_HDMI DDC_SDA_HDMI

+5V

I304&I305

LDO

5V-3.3V

3.3V-1.2V

Rx2,Rx1,Rx0,RXC

I303 24LC02 (DVI EDID)

DDC_SCL_DVI DDC_SDA_DVI

I308 scaler

RTD2482D

R,G,B,Hs,Vs

I307 24LC16B

NVRAM

(store ADJUST data)

I309 Flash ROM

(store system

source code)

I302 24LC02 (VGA EDID)

DDC_SCL_VGA, DDC_SDA_VGA

C

D

E

F

G

P305 HDMI

HDMI

Input

P303 DVI-D

Digital Input

P302 DSUB

Analog Input

1 2 3 4 5 6 7 8 9 10 11 12 13

G

8.1.2 INTERFACE BOARD_POWER

1 2 3 4 5 6 7 8 9 10 11 12 13

A

B

C

P301

STANDBY

BKLT_EN BKLT_ADJ

+5V +5V +5V GND GND

MUTE VOLUME AUDIO_EN GND

JWT-A2001WV2-12

CN20-12

BACKLIGHT_ADJ

10 11 12

NC/0.1uF_16V

CM0402

ACER G245H

40

Go to cover page

+5V

R477

NC/4K7_5%

R0402

for USB model add R478

R478 NC/0K_5%

MUTE VOLUME

AUDIO_EN

R302 4K7_5%

R0402

R478 NC/0K_5%

0.1uF_16V

CM0402

C304

P5V

1 3

R0402

R301

NC/4K7_5%

R0402

Q315

2

NC/MMBT3904

SM-NPN

Volume

1 2 3 4 5 6 7 8

9

C385

BACKLIGHT_EN BACKLIGHT_ADJ

USB_EN

+5V

FB302 PBY201209T-170Y-S

D347 NC/DFLS240L

R497 0_5%

R0402

USB_EN

BEAD0805

Power-DI123

Adj_BACKLIGHT

0.1uF_16V

CM0402

C301

P5V

+

P5V

C302

100uF_16V

EC25-63

P5V P3P3V

AP1084K33L

TO-263-GOI

C397

0.1uF_16V

CM0402

TO263

I304

3

VIN

FB318 NC/PBY201209T-170Y-S

D346 S1A

I305

VI3VO

AP1122DG

TO-252-GOI

VOUT

TAB

VSS

1

SMA

TO252

GND14

4

2

4

BEAD0805

2

+

C306

100uF_16V

EC25-63

C308

0.1uF_16V

CM0402

+

C310

100uF_16V

EC25-63

P1P2V

C311

0.1uF_16V

CM0402

P3P3VP5V

A

B

P1P2V

C

D

E

F

G

+5V

MUTE

C386

0.1uF_16V

CM0402

AUDIO_EN

C387

0.1uF_16V

CM0402

BACKLIGHT_EN

C303

0.1uF_16V

CM0402

FB301 PBY201209T-170Y-S

BEAD0805

R404

10K_5%

R0402

R304

4K7_5%

R0402

R402

0_5%

R0402

R403

0_5%

R0402

Audio_MUTE

AUDIO_EN_MCU

on_BACKLIGHT

C312

C312 NC/0.1uF_16V

NC/0.1uF_16V

CM0402

I301

I301 AO3419

AO3419

SM-FET

2 3

D

Hole1

Hole1 Case_GND

Case_GND

MH38R75

8 7 6 5

1

2

4

3

Hole2 Case_GND

MH38R75MH38R75

8 7 6 5

1

2

4

3

E

F

VLCD

FB314 PBY201209T-170Y-S

1

C376

0.1uF_16V

CM0402

BEAD0805

C377

0.1uF_16V

CM0402

VLCD

G

on_Panel

1 2 3 4 5 6 7 8 9 10 11 12 13

PCB No.

6832203800P02

8.1.3 INTERFACE BOARD_VGA&DDC

1 2 3 4 5 6 7 8 9 10 11 12 13

ACER G245H

Go to cover page

41

A

B

C

D

P302

16 17

D-SUB_15P

DSUB-15PC

VGA_5V

VGA_RED

1 9 2 10 3 11 4 12 5 13 6 14 7 15 8

VGA_RED VGA_5V VGA_GREEN

VGA_BLUE

VGA_SDA VGA_CONn VGA_HSYNC VGA_REDVGA_VSYNC VGA_GRNVGA_SCL VGA_BLU-

D309

NC/MMSZ5232BS

SOD323

D303

3

2

D303

MMBD7000

SOT-23

1

C326

0.1uF_16V

CM0402

3

2

D315

MMBD7000

SOT-23

P5V P5V P5V

1

C325

0.1uF_16V

CM0402

D304

MMBD7000

SOT-23

1

C327

0.1uF_16V

CM0402

VGA_RED-

3

2

VGA_GREEN

VGA_GRN-

VGA_BLUE

VGA_BLU-

FB315

SBK160808T-110Y-S

BEAD0603

FB316

SBK160808T-110Y-S

BEAD0603

FB317

SBK160808T-110Y-S

BEAD0603

C335

NC

CM0402

C336

NC

CM0402

C334

NC

CM0402

FB306

R326

75_1%

R0402

R323

75_1%

R0402

R324

75_1%

R0402

FB307

FB308

SBK160808T-600Y-S

BEAD0603

SBK160808T-600Y-S

BEAD0603

SBK160808T-600Y-S

BEAD0603

C329

5pF

CM0402

C330

5pF

CM0402

C331

5pF

CM0402

R327 75_1%

R0402

R406 100_1%

R0402

R322 75_1%

R0402

R330 100_1%

R0402

R328 470_1%

R0402

R325 75_1%

R0402

R407 100_1%

R0402

C315 47nF_16V

CM0402

C317 47nF_16V

CM0402

C316 47nF_16V

CM0402

C319 47nF_16V

CM0402

C328 47nF_16V

CM0402

C318 47nF_16V

CM0402

C314 47nF_16V

CM0402

RTD_R+

RTD_R-

RTD_G+

RTD_G-

RTD_B+

RTD_B-

R476

R476 NC/1M_5%

NC/1M_5%

R0402

SOG

A

B

C

VGA_CONn

R316 100_1%

FB304 SBK160808T-451Y-S

FB305 SBK160808T-451Y-S

R0402

BEAD0603

D305

D305 MMSZ5232BS

MMSZ5232BS

SOD323

D310

D310 MMSZ5232BS

MMSZ5232BS

SOD323

C323

NC/0.1uF_16V

CM0402

R318

2K4_5%

R0402

D307

D307 MMSZ5232BS

MMSZ5232BS

SOD323

R319

2K4_5%

R0402

R405 100_1%

R0402

R331 100_1%

R0402

C313

22pF_50V

CM0402

C322

12pF_25V

CM0402

VGA_DETn

RTD_H

RTD_V

D

E

F

G

P5V

D311

DDC5V_VGA

VGA_5V

BAT54C

C388

SOT-23-BAT54

0.1uF_16V

CM0402

47_1%

VGA_SCL

VGA_SDA DDC_SDA_VGA

R320 R321

R321

47_1%

R0402R320

R0402

47_1%

R0402

D308

D308 MMSZ5232BS

MMSZ5232BS

SOD323

D348

MMSZ5232BS

SOD323

D306

D306 MMSZ5232BS

MMSZ5232BS

SOD323

R314

4K7_5%

R0402

C320

47pF_25V

CM0402

R315

4K7_5%

R0402

C321

47pF_25V

CM0402

C324

0.1uF_16V

CM0402

DDC_SCL_VGA

I302

8

VCC

7

WP

6

SCL

5

SDA

M24C02_WMN6T

SOIC-8P

GND

1

A0

2

A1

3

A2

4

R408

10K_5%

R0402

R317 100_1%

R0402

DDC_WP

DDC_SCL_VGADDC_SCL_VGA DDC_SDA_VGADDC_SDA_VGA

DDC_SCL_VGA DDC_SDA_VGA

1 2 3 4 5 6 7 8 9 10 11 12 13

PCB No.

6832203800P02

E

F

G

8.1.4 INTERFACE BOARD_DVI&DDC

1 2 3 4 5 6 7 8 9 10 11 12 13

ACER G245H

Go to cover page

42

A

B

C

D

E

P303

27

RX2-

29

RX2+

31

GND

RX4-

RX4+

SCL

SDA

VS

RX1-

RX1+

GND

RX3-

RX3+

5V

GND

HP

RX0-

RX0+

GND

RX5-

RX5+

GND

RXC+

RXC-

32 30 28

DVI-D_24P

DVI-24PA

DVI_RX2- DVI_RX2+

DVI_RX1-

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16

17 18 19 20 21 22 23 24

DVI_RX2- DVI_RX2+

DVI_SCL DVI_SDA

DVI_RX1- DVI_RX1+

DVI_5V DVI_CONn

DVI_5V

D323

D323 NC/MMSZ5232BS

NC/MMSZ5232BS

SOD323

DVI_5V

C338

0.1uF_16V

CM0402

R340

1K_5%

R0402

D324

D324 MMSZ5232BS

MMSZ5232BS

SOD323

C337

0.1uF_16V

CM0402

R462

R462 NC/10K_5%

NC/10K_5%

R0402

DVI_CONn

D341

1

I/O 1

2

GND

I/O 23I/O 3

IP4223-CZ6

SOT23-6

R464

R464 NC/10K_5%

NC/10K_5%

R0402

R341 100_1%

R505 100_1%

R460

R460 NC/10K_5%

NC/10K_5%

R0402

6

I/O 4

5

VCC

4

R0402

R465

R465 NC/10K_5%

NC/10K_5%

R0402

DVI_RX1+

DVI_RX0-DVI_RX0- DVI_RX0+DVI_RX0+

DVI_RXC+DVI_RXC+ DVI_RXC-DVI_RXC-

P5V P5V

C378

0.1uF_16V

CM0402

R343 10_5% R0402R343 10_5% R0402 R347 10_5% R0402R347 10_5% R0402

R349 10_5% R0402R349 10_5% R0402 R346 10_5% R0402R346 10_5% R0402

C340

D322

D322 MMSZ5232BS

MMSZ5232BS

SOD323

R355 10_5% R0402R355 10_5% R0402 R350 10_5% R0402R350 10_5% R0402

R336 10_5% R0402R336 10_5% R0402 R348 10_5% R0402R348 10_5% R0402

R463

R463 NC/10K_5%

NC/10K_5%

R0402

C340

0.1uF_16V

CM0402

DVI_RX2-DVI_RX0-

D342

1 2

IP4223-CZ6

SOT23-6

DVI_RX2+DVI_RX0+

R466

R466 NC/10K_5%

NC/10K_5%

R0402

DVI_RXC-DVI_RX1+

I/O 1

I/O 4

GND

VCC

I/O 23I/O 3

DVI_RXC+DVI_RX1-

HDCP_HPDn

R461

R461 NC/10K_5%

NC/10K_5%

R0402

6 5 4

DVI_DETn

HDCP_HPDn

R467

R467 NC/10K_5%

NC/10K_5%

R0402

RX2N RX2P

RX1N RX1P

DVI_DETn

RX0N RX0P

RXCP RXCN

C379

0.1uF_16V

CM0402

A

B

C

D

E

F

G

P5V

D325

DDC5V_DVI

DVI_SCL DVI_SDA

DVI_5V

R345 R344

R344

BAT54C

SOT-23-BAT54

47_1%

R0402R345

R0402

47_1%

R0402

MMSZ5232BS

SOD323

D321

D321 MMSZ5232BS

MMSZ5232BS

SOD323

D349

D320

D320 MMSZ5232BS

MMSZ5232BS

SOD323

R338

12K_5%

R0402

C342

47pF_25V

CM0402

R339

12K_5%

R0402

C339

47pF_25V

CM0402

C341

0.1uF_16V

CM0402

DDC_SCL_DVI DDC_SDA_DVI

I303

8

VCC

7

WP

6

SCL

5

SDA

M24C02_WMN6T

SOIC-8P

GND

1

A0

2

A1

3

A2

4

R337

10K_5%

R0402

R342 100_1%

R0402

DDC_WP

DDC_SCL_DVIDDC_SCL_DVI DDC_SDA_DVIDDC_SDA_DVI

DDC_SCL_DVI DDC_SDA_DVI

1 2 3 4 5 6 7 8 9 10 11 12 13

PCB No.

6832203800P02

F

G

ACER G245H

43

8.1.5 INTERFACE BOARD_HDMI

1 2 3 4 5 6 7 8 9 10 11 12 13

A

B

C

D

P305

20

SHELL1

21

SHELL2

HDMI_19P

HDMI-DIP-19P

D2+

D2 Shield

D2-

D1+

D1 Shield

D1-

D0+

D0 Shield

D0-

CK+

CK Shield

CK-

CE Remote

NC

DDC CLK

DDC DATA

GND

+5V

HP DET

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

C349

0.1uF_16V

CM0402

C390

0.1uF_16V

CM0402

C389

0.1uF_16V

CM0402

R480 NC/0_5%

HDMI_5V

DET_HDMI

D339

D339 MMSZ5232BS

MMSZ5232BS

SOD323

R0402

R359

1K_5%

R0402

D340

D340 MMSZ5232BS

MMSZ5232BS

SOD323

DET_HDMI

HDMI_HPD

R484 0_5% R0402R484 0_5% R0402

R485 0_5% R0402R485 0_5% R0402 R486 0_5% R0402R486 0_5% R0402

R487 0_5% R0402R487 0_5% R0402 R488 0_5% R0402R488 0_5% R0402

R489 0_5% R0402R489 0_5% R0402 R490 0_5% R0402R490 0_5% R0402

R491 0_5% R0402R491 0_5% R0402

D327

D327 NC/MMSZ5232BS

NC/MMSZ5232BS

SOD323

HDMI_SCL HDMI_SDA

HDMI1_D2+

HDMI1_D2- HDMI1_D1+

HDMI1_D1- HDMI1_D0+

HDMI1_D0- HDMI1_CK+

HDMI1_CK-

CEC

R470

10K_5%

R0402

HDMI1_D0-

R472

10K_5%

R0402

HDMI1_D2+

HDMI1_D2- HDMI1_D1+

HDMI1_D1- HDMI1_D0+

HDMI1_D0- HDMI1_CK+

HDMI1_CK-

CEC

D344

1 2

IP4223-CZ6

SOT23-6

HDMI1_D0+

I/O 1

I/O 4

GND

VCC

I/O 23I/O 3

HDMI1_D1+

R468

10K_5%

R0402

6 5 4

HDMI1_D1-

R473

10K_5%

R0402

P5V

C381

0.1uF_16V

CM0402

D354

NC

SOD523

D355

NC

SOD523

HDMI1_D2-

R471

10K_5%

R0402

HDMI_SDA

HDMI_SCL

R474

10K_5%

R0402

D343

1

I/O 1

2

GND

I/O 23I/O 3

IP4223-CZ6

SOT23-6

D345

1

I/O 1

2

GND

I/O 23I/O 3

IP4223-CZ6

SOT23-6

HDMI1_D2+

I/O 4

VCC

HDMI1_CK-

R469

10K_5%

R0402

I/O 4

VCC

6 5 4

HDMI1_CK+

C380

0.1uF_16V

CM0402

R475

10K_5%

R0402

DDC5V_HDMI

P5V

C382

0.1uF_16V

CM0402

Go to cover page

A

B

C

D

E

F

G

P5V

D338

P5V

HDMI_5V

BAT54C

SOT-23-BAT54

D351

D351 NC/MMSZ5232BS

NC/MMSZ5232BS

SOD323

HDMI1_SDA HDMI1_SCL

HDMI_SCL HDMI_SDA

DDC5V_HDMI

R358 R356

R356

C395

NC/47pF_25V

CM0402

D350

D350 MMSZ5232BS

MMSZ5232BS

SOD323

100_1%

R0402R358

R0402

100_1%

R0402

4K7_5%

R0402

R352

C396

C396 NC/47pF_25V

NC/47pF_25V

CM0402

DDC5V_HDMI

10K_5%

4K7_5%

R353

R0402

R354

R479

I306

8

VCC

7

WP

6

SCL

5

SDA

M24C02_WMN6T

SOIC-8P

100_1%

R0402

VSS

A0 A1 A2

DDC_WP

1 2 3 4

C350

0.1uF_16V

CM0402

1 2 3 4 5 6 7 8 9 10 11 12 13

PCB No.

6832203800P02

E

F

G

8.1.6 INTERFACE BOARD_SCALER /RTD2482D

1 2 3 4 5 6 7 8 9 10 11 12 13

ACER G245H

Go to cover page

44

A

B

C

D

E

F

C373

0.1uF_16V0.1uF_16V

CM0402

I307

1

A0

2

A1

3

A2 GND4SDA

M24C16_WMN6T

SOIC-8P

R438

10K_5%

R0402

R431

NC/10K_5%

R0402

VCC

WP

SCL

PVCC_3V3

C372

0.1uF_16V

CM0402

8 7 6 5

LED_1 LED_2 KEY2_SCL KEY1_SDA

PVCC_3V3

I309

8

VDD

7

HOLD#

3

WP# VSS4SDI

PM25LV010A

SOIC-8P

R440

4K7_5%

R0402

R411 0_5%

Volume

2

SDO

1

CE#

6

SCK

5

C400

NC

CM0402

WP_PRO

R0402

R399 0_5% R0402R399 0_5% R0402 R398 0_5% R0402R398 0_5% R0402

LED_1 LED_2 KEY2_SCL KEY1_SDA

R492 4K7_5%

R0402

R423 22_1% R0402R423 22_1% R0402 R428 22_1% R0402R428 22_1% R0402

R432 22_1% R0402R432 22_1% R0402

R391

R427 100_1%

P5V

R430

4K7_5%

R0402

1 3

Shi el di ng

R0402

22_1%

R0402

EESCL EESDA

Q314

2

MMBT3904

SM-NPN

CEC

HDMI_HPD

HDCP_HPDn

P1P2V

R442 NC/0_5%

R0402

PVCC_3V3

R389

27K_5%

R0402

SDOUT

CE

CLK

SDIN

WP

P3P3V

P1P2V

PVCC_3V3

R459

PVCC_3V3

VCCK_1V2

DDC_SCL_DVI DDC_SDA_DVI HDMI1_SDA HDMI1_SCL

R0402

NC/4K7_5%

AUDIO_EN_MCU

PVCC_3V3

CE

P3P3V

FB311 PBY201209T-170Y-S

BEAD0805

FB312 PBY201209T-170Y-S

BEAD0805

R0402

R363 100_1%

Audio_MUTE

PVCC_3V3

POWER

LED_1

/ATTN

LED_2

R483 10K_5%

R0402

C371 0.1uF_16V

CM0402

R410 22_1% R0402R410 22_1% R0402 R414 22_1% R0402R414 22_1% R0402 R439 22_1% R0402R439 22_1% R0402 R436 22_1% R0402R436 22_1% R0402

R437

R437 4K7_5%

PVCC_3V3

R506

NC/4K7_5%

R0402

R441

4K7_5%

R0402

4K7_5%

R0402

C391

C391 NC/1uF_10V

NC/1uF_10V

CM0402

PVCC_3V3

FB319 PBY201209T-170Y-S

C353

10uF_10V

CM0805

VCCK_1V2

FB320 PBY201209T-170Y-S

C357

10uF_10V

CM0805

USB_EN

on_BACKLIGHT

Adj_BACKLIGHT

PVCC_3V3

R0402

R375

R374

NC/4K7_5%

C370

0.1uF_16V

CM0402

WP

CLK SDIN SDOUT CE

XO XI

PVCC_3V3

R426

6K2_5%

R0402

TMDS_3V3

BEAD0805

ADC_1V2

BEAD0805

R0402

R501 100_1%

I308

103

SD2/SPDIF2/TCON[8]/GPIO/IICSCL/PWM1/AR3N

104

SD1/SPDIF1/TCON[5]/GPIO/IRQ/IICSDA/AR2P

105

SD0 / SPDIF0 / TCON[9] / GPIO / AR2N

106

PVCC

107

PGND

108

MCK/TCON[7]/GPIO/AR1P

109

SCK/TCON[3]/GPIO/AR1N

110

WS/TCON[6]/GPIO/SDT

111

SD0/SPDIF0/TCON[4]/GPIO/SPDIF1

112

SD1/ SPDIF1/TCON[9]/GPIO/WS

113

SD2/SPDIF2/TCON[1][11]/GPIO/IrDA/SCK

114

SD3/SPDIF3/TCON[13]/GPIO/VCLK/MCK

115

SPI_SCLK/SeriesData

116

SI/MCU_SCLK

117

SO/SCSB

118

CEB/IRQB

119

GPIO/PWM5/SPDIF1

120

VCCK

121

DDCSCL3/GPIO/AUX-CH_P1

122

DDCSDA3/GPIO/AUX-CH_N1

123

DDCSDA2/GPIO/AUX-CH_N0

124

DDCSCL2/GPIO/AUX-CH_P0

125

RESETB

126

CEC/GPIO/PWM1/SPDIF2

127

XO

128

XI

R433 NC/6K2_5%

R0402

TMDS_3V3

102

LVB3P LVB3M

LVBCKP LVBCKM

LVB2P LVB2M LVB1P LVB1M LVB0P LVB0M

99

92

93

94

95

96

97

98

100

101

GPIO/PWM5/TCON[0]/AG1N

GPIO/PWM2/TXE0+_10b/AG2P

GPIO/PWM4/TCON[12][3]/AG1P

DHS/TXE0-_8b/TXE2-_10b/ACLKN

DVS/GPIO/PWM1/TXE1-_10b/AG3N

DENA/TXE0+_8b/TXE2+_10b/ACLKP

DCLK/GPIO/PWM0/TXE1+_10b/AG3P

SD3/ SPDIF3/TCON[10]/GPIO/PWM0/AR3P

GPIO/PWM3/TCON[11][6]/TXE0-_10b/AG2N

ARED0/ARED2/TXE1-_8b/TXEC-_10b/AB1N

PVCC_3V3

CM0402

C362 0.1uF_16V

72

73

74

75

76

77

84

85

86

87

88

90

91

ARED2/ARED4/TXE2-_8b/TXE3-_10b/AB2N

ARED6/AGRN2/TXE3-_8b/TXO0-_10b/BR1N

ARED4/ARED6/TXEC-_8b/TXE4+_10b/AB3N89ARED3/ARED5/TXE2+_8b/TXE3+_10b/AB2P

ARED5/ARED7/TXEC+_8b/TXE4+_10b/AB3P

ARED1/ARED3/TXE1+_8b/TXEC+_10b/AB1P

ARED7/AGRN3/TXE3+_8b/TXO0+_10b/BR1P

78

79

80

81

82

83

PVCC

PGND

AGRN2/GPIO/AGRN6/TXO1-_8b/TXO2-_10b/BR3N

AGRN0/GPIO/AGRN4/TXO0-_8b/TXO1-_10b/BR2N

AGRN1/GPIO/AGRN5/TXO0+_8b/TXO1+_10b/BR2P

VCCK

ABLU0/ GPIO/ABLU6/TXO3-_8b/TXO4-_10b/BG3N

AGRN6/GPIO/ABLU4/TXOC-_8b/TXO3-_10b/BG2N

AGRN4/GPIO/ABLU2/TXO2-_8b/TXOC-_10b/BG1N

ABLU1/ GPIO/ABLU7/TXO3+_8b/TXO4+_10b/BG3P

AGRN7/GPIO/ABLU5/TXOC+_8b/TXO3+_10b/BG2P

AGRN5/GPIO/ABLU3/TXO2+_8b/TXOC+_10b/BG1P

AGRN3/GPIO/AGRN7/TXO1+_8b/TXO2+_10b/BR3P

RTD2482/RTD2482D/RTD2482RD

QFP128

DP_VDD/TMDS_VDD1TMDS_REXT2LANE0P/RX2P_03LANE0N/RX2N_04LANE1P/RX1P_05LANE1N/RX1N_06LANE2P/RX0P_07LANE2N/RX0N_08LANE3P/RXCP_09LANE3N/RXCN_010DP_GND/TMDS_GND11LANE0P/RX2P_112LANE0N/RX2N_113LANE1P/RX1P_114LANE1N/RX1N_115LANE2P/RX0P_116LANE2N/RX0N_117LANE3P/RXCP_118LANE3N/RXCN_119DP_VDD/TMDS_VDD220AVS021AHS022ADC_VDD23B0-24B0+25G0-26G0+27SOG028R0-29R0+30GPI/B1- / V8_731GPI/B1+ / V8_6

SOG

RTD_V

RTD_H

RTD_B-

RTD_G-

RTD_R-

RTD_B+

RTD_G+

RTD_R+

C356

0.1uF_16V

CM0402

HDMI1_D0-

HDMI1_D0+

C354

0.1uF_16V

CM0402

RX1P

RX0P

RX2P

RX1N

RX2N

RX0N

RXCP

C355

0.1uF_16V

CM0402

RXCN

HDMI1_D2-

HDMI1_D1-

HDMI1_CK-

HDMI1_D1+

HDMI1_D2+

HDMI1_CK+

C383

10uF_10V

CM0805

LVA0M LVA0P LVA1M

LVA2M LVA2P

LVACKM LVACKP

LVA3M LVA3P

VCCK_1V2

C361

0.1uF_16V

CM0402

DET_SOURCE

DET_AUDIO

66

67

68

69

70

71

65

TCON[6][12]/GPIO/PWM3/BCLKN

WS/TCON[7][1]/GPIO/PWM1/BB3P

ABLU7/SCK/TCON[4][2]/GPIO/BB3N

ABLU6/MCK/TCON[5][9]/GPIO/BB2P

SD0/SPDIF0/TCON[0][7]/GPIO/IrDA

ABLU5/SD0/SPDIF0/TCON[13][3]/GPIO/BB2N

TCON[1][8]/PWM2/GPIO

ABLU4/SPDIF1/SD1/TCON[ 7][3]/GPIO/IICSCL/BB1P

ABLU3/SPDIF2/SD2/TCON[ 9][11]/GPIO/IICSDA/BB1N

TCON[3][5]/DDCSDA1/GPIO

TCON[7][10]/DDCSCL1/GPIO

ABLU2/SPDIF3/SD3/TCON[10][8]/GPIO/PWM1/PWM5/BCLKP

TCON[9][11]/B-ADC2/IICSDA/GPIO

TCON[1][4]/B-ADC1/IICSCL/GPIO

TCON[0][5]/BADC0/PWM1/PWM5/GPIO

A-ADC0/VCLK/GPIO

AUDIO_HOUTR/V8 _0/PWM0/GPIO

AUDIO_HOUTL/V8_1/SD0/GPIO

AUDIO_SOUTR/V8_2/MCK/GPIO

AUDIO_SOUTL/V8_3/SCK/GPIO

SPDIF3/AUDIO_REF/V8_4/WS/GPIO

LINE_INR/V8_5/IICSDA/GPIO

LINE_INL/V8_6/IICSCL/GPIO

ADC_GND38GPI/R1+/V8_137GPI/R1-/V8_236GPI/SOG1 / V8_335GPI/G1+ / V8_434GPI/G1- / V8_5

32

33

ADC_1V2

C384

10uF_10V

CM0805

DDC_WP

PVCC PGND VCCK

A-ADC4/GPIO A-ADC3/GPIO A-ADC2/GPIO A-ADC1/GPIO

LS_ADC_VDD

V8_7/GPIO

VCLK/AVS1

GPI/V8_0/AHS1

OSDKEY_EN

64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39

ON

R329 10K_5%

1A1D1H use R493

R493

10K_5%

R0402

R495

NC/10K_5%

R0402

1A1H use R495

WP_PRO

C360 0.1uF_16V

C359 0.1uF_16V

R434 22_1% R0402R434 22_1% R0402 R429 22_1% R0402R429 22_1% R0402

EESCL EESDA

INR INL

EAR EAL

R0402

C367

1uF_10V

CM0402

PVCC_3V3 PVCC_3V3

R494

10K_5%

R0402

DET_AUDIODET_SOURCE

R496

NC/10K_5%

R0402

CM0402

PVCC_3V3

CM0402

VCCK_1V2

DDC_SDA_VGA DDC_SCL_VGA

ON

KEY2_SCL KEY1_SDA

C358

10uF_16V

EC20-5

on_Panel

AUDIO use R494

NON-AUDIO use R496

C365

0.1uF_16V

CM0402

LVB0M LVB0P LVB1M LVB1P LVB2M LVB2P

LVBCKM LVBCKP

LVB3M LVB3P

LVA0MLVA1P LVA0P LVA1M LVA1P

LVA2M LVA2P

LVACKM LVACKP

LVA3M LVA3P

PVCC_3V3

4K7_5%

R0402

R409

P308

7 6 5 4 3 2 1

CN20-7

R409

R361

GND INR INL GND EAR EAL

R373

PVCC_3V3

A2001WV2_07_JWT

PVCC_3V3

R392

R390

4K7_5%

R0402

DET_HDMI DVI_DETn VGA_DETn

Audi o output

PC-Audi o i nput

LVB0M LVB0P LVB1M LVB1P LVB2M LVB2P

LVBCKM LVBCKP

LVB3M LVB3P

LVA0M LVA0P LVA1M LVA1P

LVA2M LVA2P

LVACKM LVACKP

LVA3M LVA3P

A

B

C

D

E

F

G

C351 12pF_50V

CM0402

C352 12pF_50V

CM0402

12

X301

27.000MHz

XTAL-2PB

R435

R435 NC/1M_5%

NC/1M_5%

R0402

R507 0_5%

XI

R0402

XO

1 2 3 4 5 6 7 8 9 10 11 12 13

PCB No.

6832203800P02

G

8.1.7 INTERFACE BOARD_PANLE_INTERFACE&KEY

1 2 3 4 5 6 7 8 9 10 11 12 13

LVB0M LVB0P LVB1M LVB1P LVB2M

A

B

C

LVB2P

LVBCKM LVBCKP

LVB3M LVB3P

LVA0M LVA0P LVA1M LVA1P

LVA2M LVA2P

LVACKM LVACKP

LVA3M LVA3P

LVB0M LVB0P LVB1M LVB1P LVB2M LVB2P

LVBCKM LVBCKP

LVB3M LVB3P

LVA0M LVA0P LVA1M LVA1P

LVA2M LVA2P

LVACKM LVACKP

LVA3M LVA3P

P3P3V

KEY2_SCL KEY1_SDA

R503 NC/100_1%

R503 NC/100_1% R504 NC/100_1%

R504 NC/100_1%

R0402 R0402

P3P3V

ACER G245H

45

Go to cover page

P307

32

LVB0M LVB0P LVB1M LVB1P LVB2M LVB2P

LVBCKM LVBCKP LVB3M

+

VLCD

LVB3P LVA0M LVA0P

LVA1M LVA1P

LVA2M LVA2P

LVACKM LVACKP

LVA3M LVA3P

R412

100_5%

R0402

R369

NC/4K7_5%

R0402

R371

NC/4K7_5%

P310

KEY2 KEY1

POWER1 ORANGE_LED1 BLUE_LED2

FOR V273 KEY 6PIN

1

POWER

2

ORANGE

3

BLUE

4

KEY2

5

KEY1

6

GND

NC/A-POINT 6PIN

DF100-6P

VLCD

C375

100uF_16V

EC25-63

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10

9 8 7 6 5 4 3 2 1

AFN300-N2G11_P-TWO

FFC-FPC-30P-100

A

B

C

D

E

F

G

POWER

P3P3V

R0402

R508 100_1%

R0402

FOR H233 POWER KEY 4PIN and X233 KEY 6PIN

R366 4K7_5%

LED_1

LED_2

R365 10K_5%

R367 4K7_5%

R364 10K_5%

10K_5%

R0402

R481

D356

D356 MMSZ5232BS

MMSZ5232BS

SOD323

R0402

ORANGE_LED1 BLUE_LED2

KEY2 KEY1

Q305

Q305 MMBT3906

MMBT3906

SM-PNP

Q308

Q308 MMBT3906

MMBT3906

SM-PNP

POWER1

R370 330_5%

R360 330_5%

P309

1 2 3 4

5 6

A2001WV2_06_JWT

CN20-6

R0402

ORANGE_LED1

C368

0.1uF_16V

CM0402

BLUE_LED2

C369

0.1uF_16V

CM0402

POWER ORANGE BLUE GND

KEY2 KEY1

OSDKEY_EN

LED_1 LED_2 KEY2_SCL KEY1_SDA

/ATTN

KEY2_SCL KEY1_SDA

LED_1 LED_2 KEY2_SCL KEY1_SDA

R500 1K_5% R0402R500 1K_5% R0402 R502 0_5% R0402R502 0_5% R0402 R368 100_1%

R368 100_1% R362 100_1%

R362 100_1%

R0402

R0402 R0402

R0402

C392

0.1uF_16V

CM0402

D352

D352 MMSZ5232BS

MMSZ5232BS

SOD323

P3P3V

D353

D353 MMSZ5232BS

MMSZ5232BS

SOD323

C394

47pF_25V

CM0402

P306

1 2 3 4 5 6

A-POINT 6PIN

DF100-6P

C393

47pF_25V

CM0402

DF100-6P

FOR H233 OSD KEY 6PIN

KEY Vin

GND ATTN SCL SDA GND

D

E

F

G

1 2 3 4 5 6 7 8 9 10 11 12 13

PCB No.

6832203800P02

8.1.8 LAYOUTSINTERFACE BOARD_

1 2 3 4 5 6 7 8 9 10 11 12 13

ACER G245H

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46

A

B

C

D

TOP SILK

BOTTOM SILK

A

B

C

D

E

F

G

1 2 3 4 5 6 7 8 9 10 11 12 13

PCB No.

6832203800P02

E

F

G

8.2 ACER_LCD_G245H_INTERFACE BOARD (1A1D/1A)

LCD Flat Panel

Interface Board

Flat Panel Controller,DDC

Power Board

AC to DC Adapter

DC to AC Inverter

Audio

AMP

(Option)

AC-IN

1W*2

Speaker

(Option)

Audio Source Host Computer

Function Key

Board

CCFT Drive

Panel data & control. DC power

Speaker

line input

DC 5V

Inverter control

Audio line input

Video Signal input& DDC

Function key input

BLOCK DIAGRAM 8.2.1

1 2 3 4 5 6 7 8 9 10 11 12 13

ACER G245H

Go to cover page

47

A

B

C

D

A

B

C

D

E

F

G

1 2 3 4 5 6 7 8 9 10 11 12 13

E

F

G

8.2.2 INTERFACE BOARD_POWER

1 2 3 4 5 6 7 8 9 10 11 12 13

ACER G245H

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48

A

B

C

D

A

B

C

D

E

F

G

1 2 3 4 5 6 7 8 9 10 11 12 13

PCB No.

6832210300P01

E

F

G

8.2.3 INTERFACE BOARD_VGA&DDC

1 2 3 4 5 6 7 8 9 10 11 12 13

ACER G245H

Go to cover page

49

A

B

C

D

A

B

C

D

E

F

G

1 2 3 4 5 6 7 8 9 10 11 12 13

PCB No.

6832210300P01

E

F

G

8.2.4 INTERFACE BOARD_DVI&DDC

1 2 3 4 5 6 7 8 9 10 11 12 13

ACER G245H

Go to cover page

50

A

B

C

D

A

B

C

D

E

F

G

1 2 3 4 5 6 7 8 9 10 11 12 13

PCB No.

6832210300P01

E

F

G

8.2.5 INTERFACE BOARD_SCALER_ RTD2555LH(1A1D)/RTD2055L(1A)

1 2 3 4 5 6 7 8 9 10 11 12 13

ACER G245H

Go to cover page

51

A

B

C

D

A

B

C

D

RTD2555LH(1A1D) RTD2055L(1A)

E

F

G

1 2 3 4 5 6 7 8 9 10 11 12 13

PCB No.

6832210300P01

E

F

G

8.2.6 INTERFACE BOARD_PANLE_INTERFACE&KEY

1 2 3 4 5 6 7 8 9 10 11 12 13

ACER G245H

Go to cover page

52

A

B

C

D

A

B

C

D

E

F

G

1 2 3 4 5 6 7 8 9 10 11 12 13

PCB No.

6832210300P01

E

F

G

8.2.7 LAYOUTSINTERFACE BOARD_

1 2 3 4 5 6 7 8 9 10 11 12 13

ACER G245H

Go to cover page

53

A

B

C

D

A

B

C

D

E

F

G

1 2 3 4 5 6 7 8 9 10 11 12 13

PCB No.

6832210300P01

E

F

G

8.3 ACER_LCD_G245H POWER BOARD (1A/1A1D/1A1D1H)

_

8.3. 1 POWER BOARD _SCHEMATIC

1 2 3 4 5 6 7 8 9 10 11 12 13

P803

A3963WV2-A3P

F801

1

A

B

C

D

E

F

L

G

N

P801

1

GND-2

1

G801

GND

0.1uF

3

2

C813

GND-2

R101 10K

C105 1000P

3.15AL250V

GND

GND-1

R136 10K

C111

1000P

ON-OFF

BRI

C102

GND-2

R107 100K

+5V

22uF/50V

GND-2

12

+

123

JUMP WIRE

D807

18B

R809 100K

R105

22

12

+

C110

R113

2.2uF/50V

C101

0.1uF

10K

J024

12

+

R808

13K

C829

R822 300K 0805

R821 300K 0805

R820 300K 0805

VCC

1uF/50V

D143

*

R102

30.1K

R103 18K

GND-2

J001

JUMP WIRE

1

2

3

33nF

GND-1

R135 1M

VCC

GND

PRCT

CTRL

C812

C801

GND-2

GND

C804

0.47U/275V

I801

HV SPACE

TEA1530

VCC

C803

*

DRAIN

GDRV

IS

R806

4.75K 1%

1

DRV1

2

VDDA

3

TIMER

4

DIM

5

ISEN

6

VSEN

7

OVPT

8

NC

C130 1000P

J002

JUMP WIRE

T801

13

24

C819

ET-20

0.1U/275V

8

7

6

54

4

I101

PGND

DRV2

GNDA

SSTCMP

LCT

ENA

OZ9938

R151 39K

L804

3

1

GND

C124 470uF/35V

GND

D809

3

1

C816 1000P

500V X7R

D810

SRF1045C

C821 1000P

100V X7R

12

+

C125

470uF/35V

GND

1

D112 1N4148

D113

2 1

2

Q104

AOD4185L

1

Q106

*

2 3

Q105

AOD4184L

1

Q107

*

3 2

21

1N4148

STPF1020CT

2

R852

JUMPER WIRE

C831

0.1uF 0805

+22V

SB140

2 3

SB140

3 2

GND

C818

+

C822

+

GND

D101

D102

C128

0.022uF

R851

6.49K 1%

T802 ER28

2 10

1

4

5

3

GND-1

Q102 3904

Q103

3906

GND

JUMPER WIRE

9

7

6

C802

3300P/250V

C832

1000P/250V

12

+

GND

R131

10

D142

D141

R128

12K

R829

*

C815

0.01uF

1KV

3.9

C811

0.22uF

GND-2

R827 36K 1%

GND

R118 39K

C104

330P

R803

0.51

R804 15K

1N4148

C806

0.01uF/630V

D804

1N4937

23

7N65C

1

D812

21

R824

33K 1%

R132 2K

R134 2K

J006

JUMP WIRE

Q803

1

21

GND

R133

23

2N7002

10

Q101

100K/2W

PR1007R

R805

D803

L803

BEAD/6mm

GND-1

C810 NC

R811

0.27/2W

GND-1

R802

SCK083

D801

2

GBU408

C820 2200P/250V-Y

C825

2200P/250V-Y

47uF/50V

I802

LTV817

16

15

14

13

CT

12

11

10

9

NC

C131 1000P

GND-2

J003

JUMP WIRE

C809

-

1

0.01u/1KV

12

GND

+

*

R826

1K

+

R104 510K

R106 150K

GND

3

R814

22/MOF

R825

1K

I803 AP431

J004

JUMP WIRE

0.01u/1KV

1K/MOF

R823

GND GND

12

+

C807

GND-1

R830

68K/0805

GND-1

1

23

C828

2.2uF/50V

GND

GND-2

C103

2.2uF/50V

GND-2

R152

+

C808

R813 100/MOF

R819

270

C106

0.047uF

4

D806

1N4148

C827

0.1uF

C805

+

100U/450V

R807

21

R815

4.7K/MOF

120K/0805

R163

C161

220P

J005

JUMP WIRE

GND-1

C817

470uF/35V

NC

+

GND-2

C824

+

1000U/16V

GND

C191 220P 0805

C192 220P 0805

R130

GND

1000U/16V

12

+

470uF/35V

12

+

470uF/35V

470 1%

C814

0.1uF 0805

GND

L802

BEAD/6mmX2

C122

C123

GND

R840

68K

0805

D811 27B

R828

1K

2

R817

1K

GND

+5V

+

1000U/16V

GND

T101

1 2 3

4 5 6710

EEL19-B

T102

1 2 3

4 5 6710

EEL19-B

C823

+22V

R818 910/2W

Q806

3904

1 3

GND

D106 1N4148

D114 1N4148

D109 1N4148

D118 1N4148

R120

12K

21

GND

C112

10P/3KV

R116 3M 1/4W

R115

3.3K

GND

D107 1N4148

21

1N4148

D108

2 1

C116

10P/3KV

R125 3M 1/4W

R126

3.3K

GND

GND GND +5V +5V

On-OFF

BRI

10

100K

15K

C109

0.022uF

R121 100K

R122

15K

9 8 7 6 5 4 3 2 1

R117

R119

P802

VOL MUTE EN STB GND GND +5V +5V On-OFF BRI

GND

C114

5P/3KV

C115 470P

X7R

GND

R111

470 1%

C118

5P/3KV

C119 470P

X7R

GND

1K/0805

D116

1N4148

1K/0805

D120 1N4148

R138

R140

ACER G245H

54

Go to cover page

I001

INL

7

C013

22nF

R003

2.2K 0805

C016

C006

10uF

4

-OUT_L

PVDDL

+OUT_L

PGNDL

PGNDR

+OUT_R

-OUT_R

INR

12

C014

22nF

R004

2.2K 0805

FB002 PBY201209T-121Y-N

JUMP WIRE

1nF

C004 1uF

L001

3

PBY201209T-121Y-N

L002

1

PBY201209T-121Y-N

2

17

L003

18

PBY201209T-121Y-N

L004

16

PBY201209T-121Y-N

R005 10K 0805

JUMP WIRE

J025

J026

R009

1K

D001

C019

0.1uF

MMSZ5232BS

R008

1K

C018

0.1uF

C011 220pF

L+

R+

C012 220pF

C021 470pF

PH-JACK-3P-Green

1 2

3

C022 470pF

MMSZ5232BS

D002

7 6 5 4 3 2 1

P003 JWT-A2001WV2-07

L-

R-

P002

GND AIN_R

AIN_L GND AOUT_R AOUT_L GND

A

P001

4

L+

3

L-

2

R-

1

R+

B

C

D

E

F

C003

470uF/16V

DN

R012

10K

MUTE

EN

C020

R010

0.1uF

100K

1

2

3

4

R137 1K/0805

GND

21

D117

1N4148

2 1

GND

1

2

3

4

R139

1K/0805

21

1N4148

2 1

GND

D121

R007

R006

P101 4P

P102

4P

ZD001

6.8B

C008

1uF

C005

0

10K

1

2

1

2

1

2

1

2

1uF

R011

100K

P103

1

2P

2

P104

1

2P

2

P106

1

2P

2

P105

1

2P

2

C017

0.1uF

PBY201209T-300Y-S

C010

C001

1uF

13

11

14

NC

C009

PBY201209T-121Y-N

FB003

6

9

5

8

1uF

C002 10uF

VDD

GND

VOLUME

MUTE

NC

EN

VDC

R002

10K 0805

15

PVDDR

PAM8603

SOP-18

VREF

10

FB001

C015

1nF

G

J007

JUMP WIRE

J014

JUMP WIRE

J008

JUMP WIRE

J015

JUMP WIRE

J009

JUMP WIRE

J016

JUMP WIRE

J010

JUMP WIRE

J011

JUMP WIRE

J012

JUMP WIRE

J013

JUMP WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13

PCB No.

6832209800P02

G

8.3.2 POWER BOARD

_LAYOUT

1 2 3 4 5 6 7 8 9 10 11 12 13

ACER G245H

Go to cover page

55

A

B

C

D

TOP SILK

A

BOTTOM SILK

B

C

D

E

F

G

1 2 3 4 5 6 7 8 9 10 11 12 13

PCB No.

6832209800P02

E

F

G

8.4 CER 245H_FUNCTION KEY BOARD A _LCD_G (1A/1A1D/1A1D1H)

8.4.1 FUNCT ION KEY BOARD_SCHEMATIC

1 2 3 4 5 6 7 8 9 10 11 12 13

A

ADC1

1

ADC2

2

LEDAMBER

3 4

LEDBLUE

5

P601

JWT-CON5-14-GP

Part Number = 20.60323.105

R601

1 2

15KR3F-GP

R601 S600

S601

SW-TACT-4P-8-GP

S600

SW-TACT-4P-8-GP

ACER G245H

56

Go to cover page

12

34

A

12

34

B

C

D

E

(NC)SC1U10V3ZY-6GP

C602

D601

1

2

3

12

C601 (NC)SC1U10V3ZY-6GP

R602

1 2

100KR3F-GP

R603

1 2

56KR3F-GP

R604

1 2

15KR3F-GP

R605

1 2

100KR3F-GP

LED-BAY-GP

Part Number = 06.1BECB.14B

S602

123

4

E SW-TACT-173-GP

S603

123

4

AUTO SW-TACT-173-GP

S604

123

4

MENU SW-TACT-173-GP

S605

123

4

LEFT SW-TACT-173-GP

B

C

D

E

F

G

P601

S601

R606

1 2

56KR3F-GP

POWERLED

S600 S602 S603 S604 S605 S606D601

E

AUTO

MENUPOWER LEFT < RIGHT >

S606

123

4

RIGHT SW-TACT-173-GP

Front View

1 2 3 4 5 6 7 8 9 10 11 12 13

PCB NO.

48.7C301.0SB

F

G

8.4.2 FUNCTION KEY BOARD_LAYOUT

1 2 3 4 5 6 7 8 9 10 11 12 13

TOP SILK

ACER G245H

Go to cover page

57

A

B

C

D

A

B

C

BOTTOM SILK

D

E

F

G

1 2 3 4 5 6 7 8 9 10 11 12 13

PCB No.

48.7C301.0SB

E

F

G

Acer G245H Schematic

Specifications and Main Features

Frequently Asked Questions

User Manual

Important Safety Notice

2. OSD Menu

function menu

2.4 Acer eColor management:

3.1 Packing E xploded Diagram

3. Exploded Diagram

3.2 Product E xploded Diagram

4. Assembly and Disassembly Procedures

5. Troubleshooting

5.1 No displa y on the screen (Screen is black a nd colour of LED is amber)

5.2 Nothing d isplays on the screen (Scree n is black and colour of LED is blue )

5.3 Checking th e back light unit

5.4 Abnorma l screen for VGA

5.5 Abnorma l screen for DVI and the same for HD MI

5.6 Abnormal OS M display adjust problem

5.7 Abnorma l plug and play operation for VG A

5.8 Abnorma l plug and play operation for DV I and the same for HDMI

5.9 Checkin g the interface circuit of syn c signal

5.10 Checki ng the resolution change IC mo vement

5.11 Check ing the DC/DC converter circ uit

5.12 No power

5.13 Checki ng the Inverter Circuit

6. Firmware Upgrade Processes

7. Writing EDID Processes