Acer AL1923 Schematic

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Acer AL1923 (Dual)

Service Guide

Service guide files and updates are available on the CSD web: for more information, Please refer to http://csd.acer.com.tw/

100% Recycled Paper

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Copyright © 2003 by Acer Incorporated. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of Acer Incorporated.

Disclaimer

The information in this guide is subject to change without notice. Acer Incorporated makes no representations or warranties, either expresses or implied, with respect to the contents hereof and specifically disclaims any warranties of merchantability or fitness for any particular purpose, Any Acer Incorporated software described in this manual is sold or licensed “as is ”. Should the programs prove defective following their purchase, the buyer (and not Acer Incorporated, its distributor, of its dealer) assumes the entire cost of all necessary servicing, repair, and any incidental or consequential damages resulting from any defect in the software.

Acer is a registered trademark of Acer Corporation. Intel is a registered trademark of Intel Corporation. Pentium and Pentium II/III are trademarks of Intel Corporation. Other brand and product names are trademarks and/or registered trademarks of their respective holders.

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Conventions

The following conventions are used in this manual:

Screen messages

Note

Warning

Caution

Important

Denotes actual messages that appear on screen

Gives bits and pieces of additional information related to the current topic.

Alerts you to any damage that might result from doing or not doing specific actions.

Gives precautionary measures to avoid possible hardware or software problems.

Reminds you to do specific actions relevant to the accomplishment of procedures.

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Preface

Before using this information and the product it supports, please read the following general information.

1. This Service Guide provides you with all technical information relating to BASICCONFIGURATION decided for Acer’s “global” product offering. To better fit local market requirements and enhance product competitiveness, your regional office MAY have decided to extend the functionality of a machine (e.g. add-on card, modem, or extra memory capability). These LOCALIZED FEATURES will NOT be covered in this generic service guide. In such cases, please contact your regional offices or the responsible personnel/channel to provide you with further technical details.

2. Please not WHEN ORDERING FRU PARTS, that you should check the most up-to-date information available on your regional web or channel. If, for whatever reason, a part number change is made, it will not be noted in the printed Service Guide, for ACER-AUTHORIZED SERVICE PROVIDERS, your Acer office may have a DIFFERENT part number code to those given in the FRU list of this printed Service Guide. You MUST use the list provided by your regional Acer office to order FRU parts for repair and service of customer machines.

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WARNING: (FOR FCC CERTIFIED MODELS)

NOTE: this equipment has been tested and found to comply with the limits for a Class B digital device,

pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, Which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

1. Reorient or relocate the receiving antenna.

2. Increase the separation between the equipment and receiver.

3. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

4. Consult the dealer or an experienced radio/TV technician for help.

NOTICE:

1. The changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

2. Shielded interface cables and AC power cord, if any, must be used in order to comply with the emission

limits.

3. The manufacturer is not responsible for any radio or TV interference caused by unauthorized

modification to this equipment. It is the responsibility of the user to correct such interference.

As an ENERGY STAR® Partner our company has determined that this product meets the ENERGY STAR

guidelines for energy efficiency.

WARNING:

To prevent fire or chock hazard, do not expose the monitor to rain or moisture. Dangerously high voltages are present inside the monitor. Do not open the cabinet. Refer servicing to qualified personnel only.

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PRECAUTIONS

l Do not use the monitor near water, e.g. near a bathtub, washbowl, kitchen sink, laundry tub,

Swimming pool or in a wet basement.

l Do not place the monitor on an unstable trolley, stand, or table. If the monitor falls, it can injure a

person and cause serious damage to the appliance. Use only a trolley or stand recommended by the manufacture or sold with the monitor. If you mount the monitor on a wall or shelf, use a mounting kit approved by the manufacture and follow the kit instructions.

l Slots and openings in the back and bottom of the cabinet area provided for ventilation. To ensure

reliable operation of the monitor and to protect it from overheating, be sure these openings are not blocked or covered. Do not place the monitor on a bed, sofa, rug or similar surface. Do not place the monitor near or over a radiator or heat register. Do not place the monitor in a bookcase or cabinet unless proper ventilation is provided.

l The monitor should be operated only from the type of power source indicated on the label. If you are

not sure of the type of power supplied to your home, consult your dealer or local power company.

l The monitor is equipped with a three-pronged grounded plug, a plug with a third (grounding) pin. This

plug will fit only into a grounded power outlet as a safety feature. If your outlet does not accommodate the three-wire plug, have an electrician install the correct outlet, or use an adapter to ground the appliance safely. Do not defeat the safety purpose of the grounded plug.

l Unplug the unit during a lightning storm or when it will not be used for long periods of time. This will

protect the monitor from damage due to power surges.

l Do not overload power strips and extension cords. Overloading can result in fire or electric shock. l Never push any object into the slot on the monitor cabinet. It could short circuit parts causing a fire or

electric shock. Never spill liquids on the monitor.

l Do not attempt to service the monitor yourself; opening or removing covers can expose you to

dangerous voltages and other hazards. Please refer all servicing to qualified service personnel.

l To ensure satisfactory operation, use the monitor only with UL listed computers which have

appropriate configured receptacles marked between 100-240V AC, Min. 3.5A.

l The wall socket shall be installed near the equipment and shall be easily accessible. l For use only with the attached power adapter (output 12V DC) which have UL,CSA listed license

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SPECIAL NOTES ON LCD MONITORS

The following symptoms are normal with LCD monitor and do not indicate a problem.

NOTES

l Due to the nature of the fluorescent light, the screen may flicker during initial use. Turn off the Power

Switch and then turn it on again to make sure the flicker disappears.

l You may find slightly uneven brightness in the screen depending on the desktop pattern you use. l The LCD screen has effective pixels of 99.99% or more. It may include blemishes of 0.01% or less such

as a missing pixel or a pixel lit all of the time.

l Due to the nature of the LCD screen, an afterimage of the previous screen may remain after switching

the image, when the same image is displayed for hours. In this case, the screen is recovered slowly by changing the image or turning off the Power Switch for hours.

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Table of contents

Chapter 1 MONITOR FEATURE ………………………………………………………….9

Chapter 2 OPERATING INSTRUTION …………………………………………………….19

Chapter 3 MACHINE ASSEMBLY ………………………………………………………. .24

Chapter 4 TROUBLE SHOOTING ………………………………………………………..36

Chapter 5 CONNECTOR INFORMATION ………………………………………………39

Chapter 6 FRU LIST ………………………………………………………………………...41

Chapter 7 SCHEMATIC DIAGRAM ………………………………………………………...42

Chapter 8 POWER BOARD INFORMATION……………………………………………….48

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Monitor Feature

Chapter 1

Driving system TFT Color LCD Size 19" Pixel pitch 0.294 mm

LCD Panel

Viewable angle

AU panel 8ms :70/60/70/70 degree(typ)

LG panel-8ms(TLB1/TLB4):70/70/70/70 degree(typ) Samsung-8ms:75/60/75/75 degree(typ) CPT panel-8ms:65/65/70/70 degree(typ) HSDpanel-8ms:TBD

Brightness LG panel-8ms(TLB1/TLB4) :300 cd/m2(typ.)

AUO 8ms:270cd/m2(typ.) Samsung 8ms: 300 cd/m2(typ.) CPT 8ms:250 cd/m2(typ.) HSD 12ms:250 cd/m2 (typ.)

Contrast Ratio

700:1 (AU M190EN04 V5 ,8ms) 550:1(LG LM190E03 TLB1/TLB4, 8ms) 700:1(Samsung TLM190EX-L01, 8ms) 700:1(CPT CLAA10EA05, 8ms) 600:1(HSD HSD190ME13-A02,8ms)

AU (V5) 8ms,LG (TLB1/TLB4) 8ms,Samsung 8 ms, CPT

Response time Video R,G,B Analog,

Input

H-Frequency 31-81KHZ V-Frequency 56-75HZ

Display Color 16.2 million Colors Maximum Dot Clock ® 135MHz Max Resolution 1280x1024@75HZ

Separate Sync H/V TTL

8ms,HSD 8 ms

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Plug & Play VESA DDC2B

ON Mode <40W

EPA ENERGY STAY Audio output Rated Power 2.0W rms(Per channel) Input Connector D-Sub, DVI-D Input Video Signal Analog : 0.7Vp-p,75OHM

Screen Size (Active) Power Source 90~264 Vac, 47~63HZ

Environmental Considerations

Weight (N.W.) TBD Dimension TBD

OFF Mode <2W

Horizontal : 337.9mm Vertical : 270.3mm

Operating Temp : 5 to 40 degree ; Storage Temp : -20 to 60 degree ; Operating Humidity : 10% to 85%

External Controls

Switch * Power Switch

* MENU / EXIT * / Volume * / Volume * AUTO / ENTER

* Contrast/brightness * Focus * Clock * H.Position * W.Position * Language * OSD Color temperature * OSD Position & Timeout * Auto Config * Input * Information * Reset * Exit

Regulatory Compliance cUL, FCC, TUV, CE, ISO13406-2

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Timings

The product has 26 memory modes in total. 16 modes are preset and 10 modes are user definable.

MODE NO. 1 2 3 4

RESOLUTION

Dot clock(MHz)

f h H-Total ( us ) 31.78(900dots) 31.778 (800 dots) 28.571(864 dots) 26.413 (832 dots) H-Sync ( us ) 3.813(108dots) 3.813 (96 dots) 2.116 (64 dots) 1.270(40 dots)

H-B-P ( us ) 1.907(54dots) 1.907 (48 dots) 3.175 (96 dots) 4.064(128 dots)

H-Active ( us ) 25.42(720dots) 25.422 (640 dots) 21.164 (640 dots) 20.317(640 dots)

H-F-P ( us ) 0.636(18dots) 0.636 (16 dots) 2.116 (64 dots) 0.762(24 dots)

f v V-Total (ms ) 14.27(449 lines) 16.683 (525 lines ) 15.000 (525 lines ) 13.735(520 lines)

V-Sync ( ms ) 0.064(2 lines) 0.064 (2 lines ) 0.086 (3 lines ) 0.079(3 lines)

V-B-P (ms ) 1.112(35 lines) 1.049 (33 lines ) 1.114 (39 lines ) 0.739(28 lines)

720 x 400 640 x 480 640x480 640 x 480

28.321 25.175 30.24 31.5

31.469kHz 31.469kHz 35.0kHz 37.861kHz

70Hz(70.087) 60Hz (59.940) 66.7 HZ (66.667)

72.809Hz

V-Active ( ms ) 12.71(400 lines) 15.253 (480 lines ) 13.714 (480 lines ) 12.678(480 lines)

V-F-P ( ms ) 0.384(12 lines) 0.317 ( 10 lines) 0.086 (3 lines ) SYNC. H/V -/+ - / - +/+ -/POLARITY Or -/-

SEP . SYNC Y Y Y Y

MODE NO. 5 6 7 8

RESOLUTION

Dot clock(MHz)

f h H-Total ( us ) 26.667(840 dots) 28.44(1024 dots) 26.40 (1056

H-Sync ( us ) 2.032 (64 dots)

640 x 480 800 x 600 800 x 600 800 x 600

31.5 36 40 49.5

37.500kHz 35.16kHz 37.879kHz 46.875kHz

dots)

2.00(72 dots) 3.200 (128 dots) 1.616 (80 dots)

0.237(9 lines)

21.333 (1056dots)

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H-B-P ( us ) 3.810 (120 dots) 3.56(128 dots) 2.200 ( 88 dots) 3.232 (160 dots)

H-Active ( us ) 20.317 (640 dots) 22.22(800 dots) 20.00 ( 800 dots) 16.162 (800 dots)

H-F-P ( us ) 0.508 (16 dots)

0.67(24 dots) 1.000 (40 dots) 0.323 (16 dots)

f v

75Hz (75) 56.25 60Hz (60.316) 75Hz (75.000)

V-Total (ms ) 13.333 (500 lines) 17.78(625 lines) 16.58 (628 lines) 13.333 (625lines)

V-Sync ( ms ) 0.080 (3 lines) 0.06(2 lines) 0.106 (4 lines) 0.064 (3 lines)

V-B-P (ms ) 0.427 (16 lines) 0.63(22 lines) 0.607 (23 lines) 0.448 (21 lines)

V-Active ( ms ) 12.80 (480 lines) 17.07(600 lines) 15.84 (600 lines) 12.80 (600lines)

V-F-P ( ms ) 0.027 ( 1 line ) 0.03( 1 line) 0.026 (1 line ) 0.021 (1 line ) SYNC. H/V - / - +/+ + / + + / + POLARITY

SEP . SYNC Y Y Y Y

MODE NO. 9 10 11 12

RESOLUTION

800 x 600 832 x 624 1024 x 768 1024 x 768

Dot clock(MHz)

50 57.283 65 75

f h

48.077kHz 49.72kHz 48.363kHz 56.48kHz

H-Total ( us ) 20.80 (1040dots) 20.11(1152 dots) 20.677(1344 dots) 17.71(1328 dots) H-Sync ( us ) 2.400 ( 120 dots) 1.12(64 dots) 2.092(136 dots) 1.81(136 dots)

H-B-P ( us ) 1.280 (64 dots) 3.91(224 dots) 2.462(160 dots) 1.92(144 dots)

H-Active ( us ) 16.00 (800 dots) 14.52( 832 dots ) 15.754(1024 dots) 13.65(1024 dots)

H-F-P ( us ) 1.120 (56 dots) 0.56(32 dots ) 0.369(24 dots) 0.32(24 dots)

f v

72Hz (72.188) 74.55Hz 60.004Hz 70.07Hz

V-Total (ms ) 13.85 (666 lines) 13.41(667 lines) 16.666(806 lines) 14.27(806 lines)

V-Sync ( ms ) 0.125 (6 lines) 0.06(3 lines) 0.124(6 lines) 0.11(6 lines)

V-B-P (ms ) 0.478 (23 lines) 0.78(39 lines) 0.600(29 lines)

0.51(29 lines)

V-Active ( ms ) 12.48 (600 lines) 12.55 (624 lines) 15.880(768 lines) 13.60(768 lines)

V-F-P ( ms ) 0.770 ( 37

0.02(1 line) 0.062(3 lines) 0.05(3 lines)

line )

SYNC. H/V + / + +/+ -/- -/POLARITY

SEP . SYNC Y Y Y Y

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MODE NO. 13 14 15 16

RESOLUTION

Dot clock(MHz)

f h H-Total ( us ) 16.66(1312 dots) 15.630 (1688 dots) 12.504 (1688 dots) 14.815(1600 dots) H-Sync ( us ) 1.22 (96 dots) 1.037 (112 dots) 1.067 (144 dots) 1.185(128 dots)

H-B-P ( us ) 2.23 (176 dots) 2.296 (248 dots) 1.837 (248 dots) 2.370(256 dots)

H-Active ( us ) 13.00 (1024 dots) 11.852 (1280 dots) 9.481 (1280dots) 10.667(1152 dots)

H-F-P ( us ) 0.20 (16 dots) 0.444 (48 dots) 0.119 (16 dots) 0.593(64 dots)

f v V-Total (ms ) 13.33 (800 lines) 16.661 (1066

V-Sync ( ms ) 0.05 (3 lines) 0.047 ( 3 lines) 0.038 (3 lines) 0.044(3 lines)

1024 x 768 1280 x 1024 1280 x 1024 1152 x 864

78.75 108 135 108

60.02kHz 63.981kHz 79.976KHz 67.5 KHz

75.03Hz 60.020Hz 75.025 Hz 75.06 Hz

lines)

13.329 (1066 lines)

13.333(900 lines)

V-B-P (ms ) 0.47 (28 lines) 0.594 ( 38 lines) 0.475 (38 lines) 0.474(32 lines)

V-Active ( ms ) 12.80 (768 lines) 16.005 (1024

lines) V-F-P ( ms ) 0.02 (1 lines) 0.016 (1 line ) 0.013 (1 lines) 0.015(1 lines) SYNC. H/V -/- +/+ +/+ +/+ POLARITY

SEP . SYNC Y Y Y Y

B : H- Sync width P : V- Sync width

C : H- Back porch Q :.V- Back porch

: H-Total

: H- Video width R : V- Video width : H- Front porch S :.V- Front porch

: V-Total

12.804(1024 lines) 12.800(864 lines)

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Monitor Block Diagram

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OPERATING INSTRUCTIONS

is inactive, press once, then press the buttons marked or

Front Panel Definition

This Section defines the front panel User Interface for Led Indictor and Key function. Key Definition:

There are five keys defined in this system and described bellows.

External Controls

Chapter 2

POWER

OSD

Function

UP/ PLUS

DOWN /

MINUS

AUTO

Power on/off Blue: power on Orange: in sleep mode

Press to view OSD. Press again to exit a selection in OSD.

If OSD is active, press to select or adjust OSD options. If OSD

to adjust the volume. If OSD is active, press to select or adjust OSD options. If OSD

to adjust the volume. If OSD is active, press to enter a selection in OSD. If OSD is

inactive, press and the monitor will automatically optimize the position, focus and clock of your display.

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OSD Menu

Picture

Brightness:

This adjusts the brightness of the picture on the screen.

Contrast:

This adjusts dark and light shades of color relative to each other to achieve a comfortable contrast.

Color temp. : There are three ways of adjusting color: Warm (Reddish white) Cool (Bluish white) User : You can adjust the colors red, green and blue to the intensity

you desire.

Focus:

This removes any horizontal distortion and makes the picture clear and sharp.

Clock:

If there are any vertical stripes seen on the background of the screen this renders them less noticeable by minimizing their size. It also changes the size of the horizontal screen.

H-Position:

This adjusts the horizontal screen position.

V-Position:

This adjusts the vertical screen position.

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Option

Auto Config. : System choose signal “Analog or Digital”

Reset:

Recall to default settings.

Information: This shows brief information on the screen.

Setting

Language:

Select the OSD menu language from English, French, German, Italian, Spanish, Simplified Chinese,

Traditional Chinese, Japanese and Russian.

OSD H. Position OSD V. Position OSD Time-out

This changes the position of the OSD window on the screen and staying time.

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LED Definition

The system equips one dual color (blue/amber) led to indict system status and defined as bellows :

System Status LED Color System in normal operation mode Green

Amber

System in power-saving mode

System in power-off mode Dark

LOGO :

When the monitor is power on, the LOGO will be showed in the center, and disappear slowly.

HOW TO OPTIMIZE THE DOS-MODE

Plug and play

Plug & play DDC2B feature

This monitor is equipped with VESA DDC2B capabilities according to the VESA DDC STANDARD. It allows the monitor to inform the host system of its identity and, depending on the level of DDC used, communicate additional information about its display capabilities. The communication channel is defined in two levels, DDC2B. The DDC2B is a bi-directional data channel based on the I2C protocol. The host can request EDID information over the DDC2B channel.

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THIS MONITOR WILL APPEAR TO BE NON-FUNCTIONAL IF THERE IS NO VIDEO INPUT SIGNAL. IN ORDER FOR THIS MONITOR TO OPERATE PROPERLY, THERE MUST BE A VIDEO INPUT SIGNAL.

This monitor meets the Green monitor standards as set by the Video Electronics Standards Association(VESA) and/or the United States Environmental Protection Agency (EPA) and The Swedish Confederation Employees (NUTEK). This feature is designed to conserve electrical energy by reducing power consumption when there is no video-input signal present. When there is no video input signal this monitor, following a time-out period, will automatically switch to an OFF mode. This reduces the monitor’s internal power supply consumption. After the video input signal is restored, full power is restored and the display is automatically redrawn. The appearance is similar to a “Screen Saver” feature except the display is completely off. The display is restored by pressing a key on the keyboard, or clicking the mouse.

USING THE RIGHT POWER CORD

The accessory power cord for the Northern American region is the wallet plug with NEMA 5-15 style and is UL listed and CSA labeled. The voltage rating for the power cord shall be 125 volt AC. Supplied with units intended for connection to power outlet of personal computer: Please use a cord set consisting of a minimum No. 18 AWG, type SJT or SVT three conductors flexible cord. One end terminates with a grounding type attachment plug, rated 10A, 250V,CEE-22 male configuration. The other end terminates with a molded-on type connector body, rated 10A, 250V, having standard CEE-22 female configuration. Please note that power supply card needs to use VDE 0602, 0625, 0821 approval power cord in European counties.

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Chapter 3

Machine assembly

This chapter contains step-by-step procedures on how to assemble the monitor for maintenance and trouble shooting NOTE : 1. The screws for the different components vary in size. During the disassembly process, group the

screws with the corresponding to avoid mismatch when putting back the components.

2. Note : The monitor surface is susceptible to scratching! Therefore, lay the monitor on a soft

surface when mounting or removing the base.

3. Wear gloves.

Front View : ( unit : mm )

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Real View :

Top View :

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Side View : ( unit : mm )

Exploded view

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Assembly process

Picture Description

1. [GET PCB SHIELD AND PUT IT IN THE MIDDLE OF CONVEYER]

1. [GET M/B AND LCD CABLE,THEN INSERT LCD CABLE IN M/B CONNECTOR]

2. [GET BUTTON CABLE,THEN INSERT IT INTO M/B CONNECTOR]

Jumper value set as 7.5mA

1. GET POWER/B AND INSERT JUMPER IN THE APPOINTED PLACE OF JP10 AT

2. GET AGGLUTINANT TO CONNECT THE JUMPER AND POWER/B

3. MARK DOT IN THE PANE MARK OF POWER/B AS PICTURE SHOWS

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1. INSERT SPEAKER CABLE IN M/B

CONNECTOR

2. GET M/B AND ASSEMBLE IT WITH POWER/B,THEN ASSEMBLE THEM IN PCB SHIELD

1. FASTEN 1*PCS SCREW(M 4*8-B) IN P/B

2. FASTEN 2*PCS SCREW(M 3*6-T) IN P/B

3. FASTEN 2*PCS SCREW(M 3*6-T) IN

M/B

1. FETCH POWER/B MYLAR PUT IT ON SHIELD AND FASTEN 1*PCS SCREW(M 3*6-T

2. FASTEN 1*PCS SCREW(M 3*6-T) IN M/B

3. GET THE SHIELD AT FRONTAGE OF THE CONVEYER

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1. GET THE SHIELD AT FRONTAGE

OF THE CONVEYER

2. GET PANEL AND PUT IT ON THE CONVEYER, THEN TEAR OFF THE INCOMING TAPE

1. UNCOVER PANEL PROTECTIVE FILM AND INSPECT IF PANEL IS DIRTY OR SCRATCHED

2. PASTE TYPE ON THE PROTECTIVE FILM TO FASTEN IT

3. TURN LCD,TEAR OFF INCOMING TYPE

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1. FETCH TRAVEL CARD, TEAR OFF 1*PCS S/N FROM TRAVEL CARD AND PASTE IT ON THE PANEL BACK,THEN SCAN S/N AND PANEL CODE

2. GET LEFT BKT AND LOCK 2*PCS SCREW(M3*5-I) TO FASTEN IT AND PANEL

1. GET RIGHT BKT AND LOCK 2*PCS SCREW(M3*5-I) TO FASTEN IT AND PANEL

2. TURN LCD AND TEAR OFF PROTECTIVE FILM

1. GET BEZEL AND CHECK ITS APPEARANCE

2. ASSEMBLE BEZEL ON PANEL,THEN PASTE TYPE TO FASTEN PROTECTIVE FILM ON THE BEZEL

3. TURN LCD

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1. SCAN S/N AND POWER CODE

2. FASTEN BKT AND BEZEL IN THE RIGHT SIDE WITH SCREW 3*PCS

1. SCAN S/N AND M/B CODE

2. FASTEN BKT AND BEZEL IN THE LEFT SIDE WITH SCREW 3*PCS

3. TURN LCD

1. FETCH BUTTON/B AND INSERT IT INTO BEZEL

2. STICK 1*PCS RUBBER AT THE APPOINTED PLACE

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1. GET SHIELD ON THE BKT R/L

2. INSERT LCD CABLE INTO PANEL CONNECTOR

3. STICK 1*PCS YELLOW TAPE TO FASTEN LCD CABLE

4. TRIM WIRES AND ASSEMBLE SHIELDING IN RIGHT POSITION

1. LOCK 4*PCS SCREW(M3*6-T) TO FASTEN PCB SHIELD

1. INSERT BUTTON CABLE INTO BUTTON

2. PUT THE SPEAKER AT THE

APPOINTED PLACE

3. INSERT NETHER CCFT CABLE IN

INVERTER CABLE

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1. FASTEN 2*PCS IO-NUT IN THE VGA JOINT

2. FASTEN 2*PCS IO-NUT IN THE M/B JOINT

3. INSERT CCFT CABLE IN POWER/B

1. STICK AL FOIL AT THE APPOINTED PLACE TO FASTEN THE CABLE

2. STICK 2*PCS AL FOIL AT THE APPOINTED PLACE

1. STICK 1*PCS AL FOIL AT THE APPOINTED PLACE

2. STICK 2*PCS AL FOIL AT CCFT

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1. CHECK THE Q’TY AND LOCATION OF AL FOIL

1. GET LCD COVER AND INSPECT ITS APPEARANCE

2. ASSEMBLE LCD COVER TO BEZEL

3. STICK 1*PCS TAPE AT THE APPOINTED PLACE

1. FETCH TRAVEL CARD, TEAR OFF 1*PCS APPOINTED S/N FROM TRAVEL CARD AND PASTE IT ON THE COVER

2. LOCK 2*PCS SCREW (F3*8-B) TO FASTEN BEZEL AND LCD COVER

3. GET STAND NECK AND INSPECT IF IT IS DIRTY AND SCRATCHED,THEN PUT IT IN THE CONVEYER

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1. AT FIRST CHECK IF 2*PCS SCREW IN

THE COVER IS LOST

2. LOCK 4*PCS SCREW (M4*10-B) TO

FASTEN STAND NECK

1. INSERT VGA CABLE INTO VGA CONNECTOR AND INSERT POWER CORD INTO POWER CONNECTOR

2. GET BASE FIXTRUE AND ASSEMBLE IT TO STAND NECK.

1. INSERT DVI CABLE INTO DVI CONNECTOR AND INSERT POWER CORD INTO POWER CONNECTOR

2. STAND UP THE MONITOR AND STICK TRAVALCARD AT LEFT DOWNSIDE OF MONITOR

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Chapter 4

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Trouble Shooting

1. No Power

No Power

Change Power Board

Check Short Of Main Board

Change U13,U12

Change X1 or U4

Check CN7

+12V and +5

Yes

Check U13=1.8V

U12=3.3V

Yes

Check

X1=14.318MHz

Change U7 or U4

Change U7

RUN Software ISP

Yes

Check U7 Pin

1,2,5,6 Clock

Yes

Check Key

Board

Change Key Board

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2. Missing Color

Missing Color

Change Cable

Change R9,R11,R12, U4

Change U4 or CN5 Cable or Panel

Check VGA or

DVI Cable

Yes

Check

R9,R11,R12

Yes

Check CN5

LVDS Signal

Adjustment R/G/B Color

Yes

NO Yes

Check OSD R/G/B Gain

Change Panel

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Connector Information

MNEM

SIGNAL

1 RV

Red Video

2 GV

Green Video

3 BV

Blue Video

4 NC

None

GND

Ground(DDC return)

6 RG

Red GND

7 GG

Green GND

8 BG

Blue GND

+5V

+ 5V (for DDC)

10 SG

Sync GND

11 NC

None

SDA

DDC Data

13 HS

Horizontal Sync

14 VS

Vertical Sync

SCL

DDC Clock

Phonejack stereo

PIN1. AC power cord : CEE22 typed connector PIN2. Audio cable PIN3. Audio : Line-in receptacle

The PIN assignment of the 15 pin mini D-SUB connector / cable is as follows:

Chapter 5

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The PIN assignment of the 24 pin DVI D connector / cable is as follows:

PIN Signal PIN Signal

1 TMDS data2- 13 NC 2 TMDS data2+ 14 +5V 3 TMDS data2 shield 15 Ground (return for +5 V and H/V

sync) 4 NC 16 Hot plug detect 5 NC 17 TMDS data06 DDC clock 18 TMDS data0+ 7 DDC data 19 TMDS data0 shield 8 Not connected 20 NC 9 TMDS data1- 21 NC

10 TMDS data1+ 22 TMDS clock shield 11 TMDS data1 shield 23 TMDS clock+ 12 NC 24 TMDS clock-

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Chapter 6

FRU (Field Replaceable Unit) list

This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of AL1511.

Refer to this chapter whenever ordering for parts to repair or for RMA (Return Merchandise Authorization).

NOTE : Please note WHEN ORDERING FRU PARTS, that you should check the most up-to-date

information available on your regional web or channel(http://aicsl.acer.com.tw/spl/). For whatever reasons a part number change is made, it will not be noted in the printed Service Guide. For ACER-AUTHORIZED CERVICE PROVIDERS, your Acer office may have a DIFFERENT part number code to those given in the FRU list of this printed Service Guide. You MUST use the local FRU list provided by your regional Acer office to order FRU parts repair and service of customer machines.

NOTE: To scrap or to return the defective parts, you should follow the local government ordinance or

regulations on how best to dispose it, or follow the rules set by your regional Acer office on how to return it.

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SCHEMATIC DIAGRAM Main Board Circuit

Chapter 7

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Chapter 8

Power Board Current set Information

When the lamp current value is 6.5mA, the jumper should be done as the picture left shows

When the lamp current value is 7.0mA, the jumper should be done as the picture left shows

When the lamp current value is 7.5mA, the jumper should be done as the picture left shows

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