Acer GW MR19 Schematic

MR19
Service Manual

Service Manual

LCD Monitor MR19

Copyright

Copyright 2009 Innolux Display Corp. Ltd

All Rights Reserved

This manual may not, in whole or in part, be copied, Photocopied, reproduced, translated, or converted to any
electronic or machine readable form without prior written permission of Innolux Display Corp. Ltd.

MR19 Wide Service Manual

- 0 -

1

Table of Contents

Important Safety Notice ......................................................................................02

01 Product Specification .......................................................................................03

02 Flat Panel Specification ....................................................................................29

03 Exploded Diagram ............................................................................................59

04 Troubleshooting..................................................................................................61

05 Spare Parts List .................................................................................................69

06 Schematics and Layouts....................................................................................73

07 Assembly and Disassembly .............................................................................88

1

MR19
Service Manual

Important Safety Notice

1. Safety precautions

This monitor is manufactured and tested on a ground principle that a user’s safety comes first. However,
improper usage or installation may cause damage to the monitor as well as to the user.

Warnings:

z This monitor should be operated only at the correct power sources indicated on the label on the rear of the

monitor. If you’re unsure of the power supply in you residence, consult your local dealer or Power
Company.

z Do not try to repair the monitor by yourself, as it contains no user-serviceable parts. This monitor should

only be repaired by a qualified technician.

z Do not remove the monitor cabinet. There is high-voltage parts inside that may cause electric shock to

human bodies.

z Stop using the monitor if the cabinet is damaged. Have it checked by a service technician.
z Put your monitor only in a lean, cool, dry environment. If it gets wet, unplug the power cable immediately

and consult your closed dealer.

z Always unplug the monitor before cleaning it. Clean the cabinet with a clean, dry cloth. Apply

non-ammonia based cleaner onto the cloth, not directly onto the class screen.

z Do not place heavy object on the monitor or power cord.

2. Product safety notice

Many electrical and mechanical parts in this chassis have special safety visual inspections and the
protection afforded by them cannot necessarily be obtained by using replacement components rated for
higher voltage, wattage, etc. Before replacing any of these components read the parts list in this manual
carefully. The use of substitute replacement parts, which do not have the same safety characteristics as
specified in the parts list, may create shock, fire, or other hazards.

3. Service notes

z When replacing parts or circuit boards, clamp the lead wires around terminals before soldering.

z Keep wires away from high voltage, high temperature components and sharp edges.

z Keep wires in their original position so as to reduce interference.

z Adjustment of this product please refers to the user’s manual.

2

MR19
Service Manual

01 Product Specification

1. General:

MR19 series LCD monitor is designed with a screen 19” SXGA+ TFT LCD panel, LVDS interface, RGB analog and digital

input(option).

It featured with embedded universal AC power supply. This monitor can support maximum resolution up to 1280x1024@60Hz.

1.1 Main Features

1.1.1 For LGD LM190E08 panel

Features Specifications

Maximum resolution

Back light system 2 CCFL

Actual Resolution display SXGA+ resolution(1280x1024)

Pixel pitch

Display area 19.0 inches diagonal

Contrast ratio 500:1(min.),800:1(typ.)10000:1(DCR)

Response time (Tr+Tf) 5ms(Typ.),10ms(Max)

Viewing angle

Input interface

Power management Compatible with VESA DPMS, Energy Star

Plug & Play VESA DDC/CI

1280x1024@60Hz

0.294mm(H)x0.294mm(W)

85°(L)/ 85°(R),75°(U)/85°(D) typ. (CR>=10)

Analog(D-sub 15pin);
Digital Optional (DVI-D with HDCP function).(option)

OSD language

English,French,Italian,Finnish,Spanish,German,Dutch,Russian

.

1.2 Accessories

AC

Items

Description 1.8m 1.8m 1.8m 1.8m Multi

Power

Cord

● ● ● ● ● ●

VGA

cable

Audio cable

3

DVI_D

Cable(option)

User’s

manual

Warranty

card

MR19
Service Manual

2. Operation Specifications

The unit should suffer no visible cosmetic damage and should operate with no degradation in display quality during

exposure to the operating conditions and after exposure to the non-operating conditions, in any sequence.

2.1 Environmental conditions

Operating Specification

Temperature range

Relative humidity 20% to 90%

Altitude 0 to 3048 M (10000 ft)

Storage

Temperature range

Relative humidity 10% to 90%

Altitude 0 to 12192M (40000 ft)

0°C to 50°C

-20°C to 60°C

2.2 Safety, EMC, Ergonomics and Compatibility Requirements

Safety & EMC

Ergonomics

Compatibility

Power Management

CB, VCCI, FCC-B, CCC, ,MET

MPRII, ISO-13406-2,

Windows 98/Me/2000, Windows XP, Window Vista

Energy Star

2.3 Electrostatic Discharge Requirements

Item Remark Spec

Contact discharge : ±8KV

Electrostatic Discharge

Air discharge : ±15KV

2.4 Reliability

Items Condition Spec Note

Temp: 25+/-2℃

CCFL Life time

Current: 7mA

Brightness: ≥50%

≧ 50,000 Hours

3. Electrical and Optical Characteristics and Performance

3.1 Main Power Supply

3.1.1

Input characteristics

Items Condition Spec Note

AC Input Voltage range Universal input full range 90~264Vac
AC Input Voltage rating Universal input full range 100~240Vac

AC input frequency range 90~264Vac 47~63Hz

Excluding the

LCD, CCFL

4

MR19

A

Service Manual

AC input frequency rating 100~240Vac 50~60Hz

100Vac 1.0A

AC Input Current

240Vac 0.6A

Inrush Current

Regulator Efficiency

115 V AC cold star,25°C <35A
230 V AC cold star,25°C <70A

DC output full loading ≥75%

Note 1: Before each test, the buck capacitor needs to be discharged.

Before each test, it must be 10 minutes at least after the latest test.

Hot star not component be damaged.

3.1.2 Output characteristics

Items Condition Spec Note

Ripple and Noise

DC Output Voltage

DC output loading capability

Rise Time

Dynamic load change

Hold-up time

Overshoot

Turn on delay time

+14.2 output(PWM mode) <1000mv

+14V output(linear mode) <400mv

+5V output <150mv

audio 5V output <300mv

14v loading:0.2A~1.0A

5v loading:0. 5A~1.0A

audio 5v loading:0A~0.8A

5v loading:0.04A~1.0

14V loading: 0A

audio 5v loading:0A

Vcc5V/1.6A

<50mS

AC input: 100V~240V >10mS

<10%

<2S

VccV:13.5V~16.3V

Vcc5V:4.95V~5.45V

audio 5v:4.5V~5.5V

Vcc14V: 13.5V~20V
Vcc5V: 4.85V~5.45V

audio 5v:4.5V~5.5V

Vcc14V/1.0A

audio 5V/0.8A

See Note1

See note 2

For system

active

For power

saving or DC

off

Power management See Table-1

Note 2: Tested by DC loading side parallel with a 47uF/EC and 0.1uF/Ceramic Capacitors and measured band-width with

DC-20MHz.

DC 24V ripple =2400mV when inverter enters Burst Mode.

3.1.3 Protection characteristics

Protection Condition Spec

OPP nominal AC input 37W ( min )

SCP(short circuit protection) Before fuse with auto-recovery function

OVP(Over voltage protection) Auto recovery <output capacitor voltage

Table-1

5

MR19
Service Manual

Status

Power On（with audio）

Power Saving

Power Off -- -- -- < 1W Off

H-sy

nc

3.2 Backlight Power Supply

Items Specification

V-s y

nc

on on active ≤34W Blue

off on blanked < 1W Amber

on off blanked < 1W Amber

off off blanked < 1W Amber

Video Power LED

Panel

Lamp 2 CCFL

Input Voltage DC 13.5~16.3 V

Input current 0.8A (Typ.), 1.0A (Max.)

On/Off switch level

Brightness PWM Duty (ACM Off)

Brightness PWM Duty (ACM On)

CCFL operating Voltage 800Vrms (Typ.),

CCFL Current

LGD LM190E08 panel

5.5V≧Von≧ 2.0 V (on)

-0.3v ≤ Voff ≤ 0.8 V (off)

30%~100%

10%~100%

2.0mA (min.)

7.5mA (Typ.)

8.0 mA (Max.)

CCFL startup voltage

Operating frequency 40~60KHz

Protect delay time > 1 second

Efficiency ≥70% (Using dummy load)

≧1700 Vrms (0˚C)

6

MR19
Service Manual

3.3 Input / Output Signal Specifications

3.3.1 Video signals

Signal Cable

Analog

Digital(option)

Sync

Items Condition Spec OK

15 pin D-Sub

DVI-D(option)

Signal type Separate analog R,G,B

Level 700 mV +/- 5% (peak to

Impedance 75 Ohms +/- 2% Ohms

Base on TMDS technology

Signal type Separate H/V-sync

Level Logic High: 2.0V ~ 5.5V

Termi nal

Color: BLACK

Length: 1800

+/-

20 mm

Color: BLACK

Length: 1800

+/-

20 mm

peak)

(Positive/Negative)

Logic Low: 0V ~ 0.8V

(TTL level)

≧

2.2k

Ω

●

●

●

●

●

●

●

●

Note
Monitor side should be
blue right angle.
NO DVI cable in carton

For 15 pin D-sub

For 15 pin D-sub

Refer to VESA VSIS
Standard V1R1

Ω

for application

2.2K

3.3.2

Signal Timing

Through D-SUB and DVI(option) connectors, this unit can support FH= 31~83 KHz, Fv=56~76 Hz.

Modes details as below:

VESA MODES

Horizontal Vertical

Mode Resolution

640*480@60Hz 31.469 N 59.941 N 25.175

640*480@72Hz 37.861 N 72.809 N 31.5

VGA

SVGA

640*480@75Hz 37.5 N 75 N 31.5

800*600@56Hz 35.156 P 56.25 P 36

800*600@60Hz 37.879 P 60.317 P 40

800*600@72Hz 48.077 P 72.188 P 50

800*600@75Hz 46.875 P 75 P 49.5

1024*768@60Hz 48.363 N 60.004 N 65

1024*768@70Hz 56.476 N 70.069 N 75

Nominal

Frequency

+/-0.5KHz

Sync

Polarity

Nominal

Frequency

+/-1Hz

Sync

Polarity

Nominal Pixel

Clock (MHz)

XGA

SXGA

1024*768@75Hz 60.023 P 75.029 P 78.75

1152*864@75Hz 67.5 P 75 P 108

1280*960@60Hz 60 P 60 P 108

1280*1024@60Hz 63.981 P 60.02 P 108

7

MR19
Service Manual

1280*1024@75Hz 79.976 P 75.025 P 135.000

WXGA

WSXGA+

VGA

SVGA

XGA

WXGA

Note: 1. Non-interlace signals only (An interlace signal cannot be display)

2. Please refer to F/W specification for more detail

3. Each frequency of Power Macintosh and Sun Ultra is a reference value

IBM MODES

720x400@70Hz 31.469 N 70.087 P 28.322

MAC MODES

640*480@66.7Hz 35 P

832*624@74.55Hz 49.722 N 74.55 N 57.283

1152*870@75Hz 68.681 N 75.062 N 100

Other MODES

66.667 N 30.24

3.3.3

Timing requirements

Item Condition Specification

Horizontal

Vertical

Out of range

3.3.4

DDC data

Sync polarity: (+) or (-)

Sync polarity: (+) or (-)

Excluding Horizontal
(31~83)KHz or
Vertical 56~76 Hz

31~83KHz

56~76 Hz

Message “

EDID Standard Compliance

EDID File Format : VESA’s EDID Standard Version #3, Revision #0,
EDID Structure : Version #1, Revision #3.
EDID Data Table : See the file of LE19U1-DR4-16

4. LCD Characteristic & Performance

4.1 Panel general specifications

Frequency out of range” on screen

General Specifications

(1) The test methods for the below items’ definition, please refer to the specification of LM190E08-TLJ2 panel

Supplier LG

Model name LM190E08-TLJ2

Display Area 19.0 inches diagonal

8

MR19
Service Manual

Pixel Pitch 0.294mm(H)x0.294mm(W)

Display Colors: 16.7Million (6bit+Hi-FRC)

Number of Pixel 1280x1024 pixels

Pixel Arrangement RGB vertical stripe

Brightness 250cd/m2 (Typ.)

Contrast Ratio 800:1 (Typ.)

Viewing Angle Hor:170°, Ver: 160°(Typ)

Brightness Uniformity

Display Mode Normally White

Response Time(Tr+Tf) 5ms (Typ.), 10ms (Max.)

Surface Treatment Haze 25%, Hard-coating (3H)

Lamp 2 CCFL

Notes: Other panel source, please refer to the panel specifications.

≧75%

4.2 Optical characteristic of LCD panel

(1) The test methods for the below items’ definition, please refer to the specification of LM190E08-TLJ2 panel.

Item Unit Conditions Min. Typ. Max. Remark

Viewing Angle

Contrast ratio

Response Time

Color / Chromaticity

Coordinates (CIE)

Color Coordinates (CIE) White

Luminance Uniformity

White Luminance at

CCFL 6.5mA(center point)

[degree]
[degree]
[degree]
[degree]

Normal Direction 500 800
[msec] Rising Time - 1.3 2.6
[msec] Falling Time - 3.7 7.4
[msec] Rising + Falling - 5 10

Red x 0.640

Red y 0.335

Green x 0.298

Green y 0.608

Blue x 0.147

Blue y 0.070

[%] 9 points measurement 75%

[cd/m2]

Horizontal (Right)

CR >= 10 (Left)

Vertical (Up)

CR >= 10 (Down)

White x 0.313
White y

200 250 -

70
70
60
70

Typ-0.03

85
85
75
85

0.329

Typ+0.03

-

-

-

-

4.3 Brightness output

The test to verify specifications in this section shall be performed under the following standard conditions unless otherwise
noted.

Temperature : 25 ± 5°C
Test pattern : white
Video Resolution : 1280x1024
Video input level : 700 mV ± 2%
Warm-up time : 30 minutes

9

MR19
Service Manual

Item Condition SPEC

Brightness

Grey Scale

4.4 White balance

The test standard conditions refer to Sec 3.3. (Brightness control is at 100 contrast control is at 50.)

Brightness=100%

Contrast = 100%
Brightness=100%

Contrast = 100%

≧ 200 cd/m

the last 3~8 levels of 32
grey scales is combined

2

Cool

Warm

User

4.5 Brightness uniformity

The test standard conditions refer to Sec 3.4.

Mode

9300K 0.283 ± 0.030 0.297 ± 0.030

6500K 0.313 ± 0.030 0.329 ± 0.030

Panel While x Panel While y

)(backlight points nine of luminance Min.

≥

)(backlight points nine of luminance Max.

L/2

4 6

Chromaticity Coordinate

x y

(4)

%75

L/10

5

W/10

1 2

7

8

3

9

W/2

Fig.3

10

MR19
Service Manual

4.6 Audio Signal

Items Specification

Input impedance

Frequency response range

Signal to noise ratio

Output power

Loading impedance

Note: The low pass RC Filter (R=100Ω / C=0.047uF) for Class-D output power and THD+N measurement, and under 1KHz, 1Vrms

and sine wave input.

≧ 10K ohm

200Hz –20kHz

≧ 40 dB
≦1 W + 1 W(±20% tolerance), THD 10%.

4 ohm

5. Function Specifications

All the tests to verify specifications in this section shall be performed under the following standard conditions unless

otherwise noted. The standard conditions are:

Temperature : 25 ± 5°C
Warm-up time : 30 minutes minimum
Checking display modes : All the specified modes

5.1 Keypad Function

5.1.1

注：1.if current Menu is Language menu, when you press

[AUTO] key, it will not save your select and

Control buttons

A. When OSD un-displays , press [AUTO] to perform auto-adjustment

[AUTO]

[MENU]

[＞], [＜]

[POWER] Power on or power off the monitor

B. When OSD displays, and the current Menu is Main Menu press [AUTO] to turn off the
Main Menu, or press [AUTO] to return to previous level menu.

A. When OSD isn’t shown on screen, press [MENU] to enter OSD interface.
B. When OSD displays, press [MENU] to perform function of menu icon that is highlight or

enter next level menu, and if the Menu is the last layer of OSD press [MENU] to finish
adjust and turn off Menu.

A. When “MENU OSD” displays, press these keys to change the contents of an

adjustment item, or change an adjustment value.

B. When “MENU OSD” un-displays, press [＜] to show “Audio” OSD, press [＞] to show

“Theme Mode” OSD.

return to

[MENU]

previous menu.

key, it will save your select and return to

previous menu. and when you press

11

MR19
Service Manual

5.1.2

FUNCTION

FACTORY
MODE

Hot Key Operation

AUTO MENU

●

HOT KEY OPERATION

＜

＞

POWER

ON

DESCRIPTION

Press [AUTO] at the same time, and then press
[POWER] for DC power on. OSD menu will be
shown with “F” on the left top. Select “F” for
entering factory mode

Volume

Theme Mode

●

●

Adjust Volume

Select Theme Mode

12

MR19
Service Manual

5.2 OSD Structure

The On-Screen Display (OSD) shall be an easy to use icon based menu through keypad OSD buttons or remote control
unit. The unit shall leave the factory with all OSD controls set to their default values.

Analog:

“Picture” will be the first selected function while user power on main menu.

First Second Third Fourth Control Value Default

Auto

VGA

Input

Audio Volume 50

Picture

Geometry

Advanced

DVI

Brightness 80

Contrast 50

Gamma

H-Position 50
V-Position 50

Clock 50
Phase

Color

Language

Resolution

Reminder

Information

Enable Reset

Disable

Gamma2.0
Gamma2.2
Gamma2.4

Warm Default color

Cool

Customer

Color

Theme Mode

English

Français

Italiano

Español
Hollands
Русский

Suomalainen

Deutsch

Gamma 2.2

Red 50

Green 50

Blue 50

Movie

Game

Picture

User

Tint/Hue 50

Saturation 50

Sharpness 50

Dynamic

Enable

Disable

English

Disable

Disable

13

MR19
Service Manual

DVI(option):

If our monitor is in Dual mode, the gray area below will be the function which could not be adjusted.

First Second Third Fourth Control Value Default

Auto

VGA

Input

Audio Volume 50

Picture

Geometry

Advanced

DVI

Brightness 80

Contrast 50

Gamma

H-Position
V-Position

Clock
Phase

Color

Language

Resolution

Reminder

Information

Enable Reset

Disable

Gamma2.0
Gamma2.2
Gamma2.4

Warm Default color

Cool

Customer

Color

Theme Mode

English

Français

Italiano

Español

Hollands

Русский

Suomalainen

Deutsch

Disable

Gamma 2.2

Red 50

Green 50

Blue 50

Movie

Game

Picture

User

Tint/Hue 50
Saturation 50
Sharpness 50

Dynamic

Enable

Disable

English

Disable

14

MR19
Service Manual

Theme Mode Brightness Contrast

Movie 100 54

Game 100 58

Picture 100 50

User(After Reset all) 80 50

Remark:

1. Main OSD will Show 10 Second on the Screen，if there is No Operation on the OSD，And ±1 Second is accepted.

2.Gamma 2.0(2.0±0.2), Gamma 2.2(2.2±0.2), Gamma 2.4(2.4±0.2).

3. When dynamic be enabled, after adjusting theme mode/Color Menu, DCR function will be turn off automatically.

5.3 Gateway OSD Message

Item Description

When User Press Hot-Key “Auto” or use main Menu “Auto processing”

Auto Processing

No Signal

Frequency out of

range

Resolution

Reminder

function, will show this message ,and the monitor do the auto process
function.
When the video cable is connect, but there is no active signal input, will
show this message, then enter into power saving mode.(will Show 3
seconds)

1. When meet the case as below:
a. Input signal is detected by the system;
b. Input signal is out of the system support rang or supported table which
may have following case:

-input signal is out of the support H or V frequency range;

-input signal is in specified blocked list;

-Input signal is out of the system support specification;
Then will show this message.

2. The menu will be shown as:
a. Move around the full screen;
b. Desktop background in Black;
c. Continue 5 minutes and then step into Power Saving Mode.
When user entering into “Advanced” menu, user could select “Resolution
reminder” item. After selecting “Resolution reminder”, main menu will show
“Your Computer screen resolution may not match this monitor’s optimum
1600x900 setting. To adjust your screen resolution and see your
computer’s printed or online documentation. Press the AUTO button on the
side of this monitor after adjusting the screen resolution. ”

Information

Reset

Input Menu

While user entering into “Advanced” menu, user could select “Information”.
Main menu will show “Mode:, Input: , OSD Vers: ,SN ”.

Go to “Main menu” and select “Reset” function. After select “Reset”,
monitor will show a “Reset All” pop up window.

This Menu will Show at the Cases Below(3 Seconds) :

1. AC/DC On;

2. Power Saving On;

3. Burn In On;

4. Switch Source;

5. Plug and pull out Cable.

15

MR19
Service Manual

6. SOP of PCBA ISP Programming

6.1 Operational condition:
Equipment: PC, ISP card, signal cable and power cable.
ESD requirements: antistatic wrists, antistatic gloves(fingers), and connecting cable
Name of ISP program: ISP_Tool_V4.4.2.4

Manufacture of FW IC：PMC/SST/MX

6.2 Operational steps:

1. Connection: connect PC to PCBA with signal cable, and then keep AC and DC in open state.

Signal cable

One port of ISP
program card is
connected to

PC

2. Adjust ISP programming

Firstly, double click ISP_Tool_ V4.4.2.4 exit and click “Connect ” button; The ISP tool will connect to
monitor automatically, and it will show flash IC type automatically

FW IC

Model

16

MR19
Service Manual

Secondly﹐download FW software: first select “READ”, and then load FW software in Rooter

(Fig.2).

Software

Checksum value

FW BIN file

Thirdly, select “AUTO”, and keep its default value. Click “RUN” for beginning programming. There will
be prompting if programming is OK.

17

MR19
Service Manual

◆Note: if programming fails or success rate is not high, click “Config” and adjust its speed to lower

in “I2C Speed Setting”and check Communication Setting. If connect port is print port, please check
port type.

18

MR19
Service Manual

3. Flow Chart

19

MR19
Service Manual

7. SOP of EDID

7.1 Request of hardware and software:

1. Software
a.port95nt.exe
b.Edid.exe
c.MR19 model

2. Hardware

a. PC（winXP or win2000）1PCS；
b. Tool（EDID Card、VGA cable & DVI cable)

7.2 Operational steps:

1. First set up Port95nt.exe

20

MR19
Service Manual

2. Click next button continually then can finish setting.

21

MR19
Service Manual

EDID Tool Set up

A : USB interface provide +5V DC power（No Power is ok ）
B : Connect DDC Card and PC with collateral interface ；
C :VGA、DVI use different cable to link DDC and PC

A

A

B

B

C

C

22

MR19

B C

Service Manual

EDID ISP Card:

A

A：Collateral printing interface (connect with PC)

B : VGA interface (one VGA connect with PC to provide signal for monitor the other one connect with

PC VGA interface to write VGA EDID, Write EDID can without providing signal)

C : DVI interface (connect with Monitor)

23

MR19
Service Manual

3. Write EDID Process：

3.1 Choose File menu in main menu ，choose Auto Write button，click S/N blank .

MR19

24

MR19
Service Manual

3.2 Cloose the Model in main menu, and the password is 1234.

MR19

25