Acer AL2051W Service Guide
Service Guide Version and Revision
No. Version 1.0 2.0 Release Date Dec-15-2005 Jan-04-2006 Revision History Initial release (Draft Version) Final Version TA90KAUDBGAFACP TPV Model TA90KAUHKGAEAP

Copyright

Copyright 2006 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 expressed 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, or its dealer) assumes the entire cost of all necessary servicing, repair, and any incidental or consequential damages resulting from any defect in the software.
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.

Trademarks

Acer is a registered trademark of Acer Incorporated. All other trademarks are property of their respective owners.

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

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 the BASIC CONFIGURATION 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 note WHEN ORDERING FRU PARTS,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.
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 ENERGY STAR Partner our company has determined that this product meets the ENERGY STAR guidelines for energy efficiency.

D-Sub 15pin DVI-D 24pin

Interface frequency

Horizontal Frequency 30KHz ----91KHz Vertical Frequency 55Hz ------85Hz
Plug & play Power Input voltage Total output power Weight
VESA DDC2B, VESA DPMS 230V 5 , Hz
49Watt max. Unpacked: 5.4 Kg Packed: 7.3 Kg

LCD Panel Specification

LCD Panel Model (AU M201EW01)
Display Type Resolution Display Dot Display Area Pixel Pitch Display Color Lamp Frequency Lamp Current Weight active matrix color TFT LCD 1680 x 1050

1680(x3) x 1050

433.44mm(H) x 270.90mm(V) 0.258mm(H) x 0.258mm(V) 16.7M (true) 50kHz(Max.) 6.0 mArms (typ) 2950g (typ)

Optical Specifications

The optical characteristics are measured under stable conditions at 25 :

Supported Timing

Support Modes
There will be 20 total support modes to accommodate the above mode and other video modes within the frequency range of the monitor.

Monitor Block Diagram

The LCD monitor will contain a main board, a power board, which house the flat panel control logic, brightness control logic and DDC. The Inverter board will drive the backlight of panel.

CCFL Drive.

Flat Panel and CCFL backlight
Power Board (Include: Inverter and adapter board)
RS232 Connector For Main Board (Include: Audio and Keypad board) white balance adjustment in factory mode

AC-IN 100V-240

Host Computer

Video signal, DDC

Main Board Diagram
Panel connector (CN407) OSD Control KEY PAD
MST9251A-LF-205 MCU W79E632 (U402) (Include: ADC, OSD etc) (U401) Frame Memory (U303)

EPR_SDA EPR_SCL

RXD TXD

H sync V sync

DVI Video Signal
EEPROM AT24C16AN-10SU-2.7 (U403) D-Sub Connector (CN101) DB15_SDA DB15_SCL
DVI Connector (CN102) DVI_SDA DVI_SCL
EEPROM M24C02-WMN6TP (U101)
EEPROM M24C02-WMN6TP (U102)

Software Flow Chart

Y 2 N 3

N 5 Y 6

N 7 Y 8

10 Y N 12 Y 14

N 15 Y 17 16

Remark:

1) MCU initializes. 2) Is the EEPROM blank? 3) Program the EEPROM by default values. 4) Get the PWM value of brightness from EEPROM. 5) Is the power key pressed? 6) Clear all global flags. 7) Are the AUTO and SELECT keys pressed? 8) Enter factory mode. 9) Save the power key status into EEPROM. Turn on the LED and set it to green color. Scalar initializes. 10) In standby mode? 11) Update the lifetime of back light. 12) Check the analog port, are there any signals coming? 13) Does the scalar send out an interrupt request? 14) Wake up the scalar. 15) Are there any signals coming from analog port? 16) Display "No connection Check Signal Cable" message. And go into standby mode after the message disappears. 17) Program the scalar to be able to show the coming mode. 18) Process the OSD display. 19) Read the keyboard. Is the power key pressed?

Main Board Layout

Label CN603 CN602 CN701 CN101 CN102 X401 X402 U401 U402
Part No. 88G 30211K 88G 30214K 88G 3041CE 88G 35315F H 88G 35424F H 93G 93G H 56G 562120 56G1125170AC1
Description PHONE JACK 5PIN PHONE JACK 5PIN DC JACK 3PIN D-SUB 15PIN DVI CONNECTOR 24PIN CRYSTAL 14.318MHzHC-49U 20MHZ/20PF/49US MST9251A-LF-205 W79E632 BY WINBOND

Front Bezel

External Controls
Item 1. 2. 3. >/ Volume </ Volume Power Key/Power Indicator Description Item 4. 5. Description MENU/ENTER Auto Adjust Key/Exit

Rear Bezel

Item 1. 2. 3.
Description D-SUB Cable DC-Jack Power Cable AC Power Cord

Item 4. 5. 6. DVI Cable

Description External Adapter Audio Cable

Operating Instructions

monitor. By changing these settings, the picture can be adjusted to your personal preferences. The power cord should be connected. Connect the video cable from the monitor to the video card. Press the power button to turn on the monitor position. The power indicator will light up.

Chapter 2

Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the
Item 1. 2. 3. >/ Volume </ Volume

Item 4. 5.

Description MENU/ENTER Auto Adjust Key/Exit

LED/Power Key

Front Panel Control
Power Button: Press this button to turn the monitor ON or OFF, and display the monitors state.
Menu / Enter: Activate OSD menu when OSD is OFF or activate/de-activate adjustment function when OSD is ON or Exit OSD menu when in Volume Adjust OSD status. <Volume: Activates the volume control when the OSD is OFF or navigates through adjustment icons when OSD is ON or adjust a function when function is activated. >/Volume: Activates the volume control when the OSD is OFF or navigates through adjustment icons when OSD is ON or adjusts a function when function is activated.
Auto Adjust button / Exit: 1. When OSD menu is in active status, this button will act as EXIT-KEY (EXIT OSD menu). 2.When OSD menu is in off status, press this button for 2 seconds to activate the Auto Adjustment function. The Auto Adjustment function is used to set the HPos, VPos, Clock and Focus. Power Indicator: Blue Power On mode. Orange Power Off mode NOTES
Notes Do not install the monitor in a location near heat sources such as radiators or air ducts, or in a place subject to direct sunlight, or excessive dust or mechanical vibration or shock. Save the original shipping carton and packing materials, as they will come in handy if you ever have to ship your monitor. For maximum protection, repackage your monitor as it was originally packed at the factory. To keep the monitor looking new, periodically clean it with a soft cloth. Stubborn stains may be removed with a cloth lightly dampened with a mild detergent solution. Never use strong solvents such as thinner, benzene, or abrasive cleaners, since these will damage the cabinet. As a safety precaution, always unplug the monitor before cleaning it.

Adjusting the Picture

a. How to Adjust a Setting
1. Press the MENU-button to activate the OSD window. 2. Press <or >to select the desired function. 3. Press the MENU-button to select the function that you want to adjust. 4. Press < or >to change the settings of the current function. 5. To exit and save, select the exit function. If you want to adjust any other function, repeat steps 2-4.

Analog Input only model

Dual-Input Model, Analog Signal Input
Dual-Input Model, Digital Signal Input
b. The Description For Control Function

Hot-Key Menu

a. Outline
b. The Description For Hot-Key Function
Item Operation When the OSD is closed, press Left or Volume Right button will be Volume Hot-Key Function Icon Description Volume of Audio adjustment. The Audio will be Mute when volume=0

OSD Message

b. The Description For OSD Message
Item Auto Config Please Wait Input Not Supported Cable Not Connected No Signal Description When Analog signal input, if User Press Hot-Key Auto, will show this message, and the monitor do the auto config function. When the Hsync Frequency, Vsync Frequency or Resolution is out of the monitor support range, will show this message. This message will be flying. Analog-Only Model: When the video cable is not connected, will show this message. This message will be flying. Analog-Only Model: When the video cable is connected, but there is no active signal input, will show this message, then enter power saving.
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 DDC2B is a bi-directional data channel based on the IC protocol. The host can request EDID information over the DDC2B channel. 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 signals 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. Pressing a key on the keyboard, or clicking the mouse restores the display. 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 volts 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, and 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 cord needs to use VDE 0602, 0625, 0821 approval power cord in European counties.

Machine Disassembly

Chapter 3
This chapter contains step-by-step procedures on how to assemble the monitor for maintenance. Disassembly Procedure

The back view

1. Remove two screws. (Fig 1) 2. Remove the hinge cover. (Fig 2) 3. Remove the one screw. (Fig 3)

Fig 3 27

4. Firstly, find out the two hooks position. (Fig 4) 5. Then, pry the rear cover up as arrowhead direction. (Fig 5) 6. Remove the six screws. (Fig 6)
7. Disconnect the wire harnesses of main board and panel, main board and power board. (Fig 7) 8. Remove four screws. (Fig 8) 9. Pry the main frame on the left to remove bezel. (Fig 9.1) Pry the main frame on the right to remove bezel. (Fig 9.2)

Fig 9.1 29

Fig 9.2 10. Remove the screws for frame on the left. (Fig 10.1) Remove the screws for frame on the right. (Fig 10.2)

Fig 10.1

Fig 10.2 30
11. Disconnect the wire harness for power board and lamps. (Fig 11) 12. Remove the four screws to remove the main board. (Fig 12) 13. Remove the eight screws to remove BKT base. (Fig 13)

Fig 11

Fig 12

Fig 13 31

14. Remove the two screws to loose the copper manganese wire. (Fig 14) 15. Remove the four screws and disconnect the wire harness. (Fig 15) 16. Remove the four screws. (Fig 16)

Fig 14

Fig 15

Fig 16 32

17. Turn the six clips anticlockwise to remove the shielding. (Fig 17) 18. Disconnect the wire harness of main board and panel. (Fig 18) The end!!

Fig 17

Fig 18

Troubleshooting

This chapter provides troubleshooting information for the AL2051W:

1. Main board No power

Chapter 4

No power

Press power key and look if the picture is normal
NG Please reinsert and make sure the AC of 100-240 is normal OK NG Reinsert or check the Adapter/Inverter section
Measure U703 PIN2=1.8V U705 PIN2=3.3V NG OK X401 and X402 oscillate waveforms are normal Check CN201 or replace U703, U705

Replace X401, X402

Replace U402 NG Replace U401

No picture (LED orange)

No picture
The button if under control
X401oscillate waveform is normal OK

NG Replace X401

OK Check reset circuit of U402 is normal Measure U703 PIN2=1.8V U705 PIN2=3.3V OK Replace U402 OK NG NG Check Correspondent component
X402 oscillate waveform is normal
Replace U703, U705 OK NG Replace X402
Check HS/VS from CN407 is normal NG OK Replace U401 Check Correspondent component

White screen

Measure Q701 base is high level?
X401 oscillate waveform is normal

Replace X401

Check Q701, Q702 is broken or CN407 solder?
Check reset circuit of U402 is normal
Check Correspondent component.

NG OK OK

Replace U402

Replace Panel

Note: 1. If Replace MAIN-BOARD, Please re-do DDC-content programmed & WHITE-Balance. 2. If Replace PWPC only, Please re-do WHITE-Balance

2. Power Board

Check AC line volt 110V or 220V

Check AC line

Check the voltage of C904(+)
Check F901, bridge rectified circuit
Check start voltage for the pin3 of IC901

Check R903, R904,IC901

Check the auxiliary voltage is between 10V-16V
Check Q902,Q903 Check T901, D902

Check D904, D905,IC902

3. Inverter Board

No backlight

Check L805 =12V
OK NG Check adapter board
Check ON/OFF signal OK NG Check main board
Check IC801 PIN5=5V+ -0.25V NG Check Q802,Q804,ZD803 circuit
Check IC801 PIN18 triangular wave is normal NG Check R821,C821
Check IC801 PIN11, 12,19,20

Check feedback

End no output debug

Keypad Board

OSD is unstable or not working
N Is Keypad Board connecting normally? Y N Is Button Switch normally? Replace Button Switch Connect Keypad Board
N Is Keypad Board Normally? Y Replace Keypad Board

Check Main Board

Connector Information
The following figure shows the connector locations on the monitor:

Chapter 5

15 Pin Color Display Signal Cable (D-sub)
Pin No. 1. 2. 3. 4. 5. 6. 7. 8.
Description Red Green Blue Monitor Ground DDC-Return R-Ground G-Ground B-Ground
Pin No. 9. 10. 11. 12. 13. 14. 15.
Description +5V Logic Ground Monitor Ground DDC-Serial Data H-Sync V-Sync DDC-Serial Clock
24 Pin Color Display Signal Cable (DVI) Pin No. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. Description TMDS Data2TMDS Data2+ TMDS Data 2/4 Shield TMDS Data4TMDS Data4+ DDC Clock DDC Data Analogue Vertical Sync TMDS Data1TMDS Data1+ TMDS Data 1/3 Shield TMDS Data3Pin No. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. Description TMDS Data3+ +5V Power Ground Hot Plug Detect TMDS Data0TMDS Data0+ TMDS Data 0/5 Shield TMDS Data5TMDS Data5+ DDC Clock Shield DDC Clock+ DDC Clock-

ALE RD WR HWRESET INT

ALE RD WR HWRESET INT AD0 AD1 AD2 AD3

+3.3DV2 +3.3DV1 +2.5MVDD

+2.5MVDD
VCPU AD0 AD1 onPANEL_5V/3.3V AD2 onBACKLITE AD3 AUDIO_SD onPOWER AUDIO_MU
B5 FSDQM1 FSDQM0 FSDQSU3 FSDQSU2 FSDQSU1 FSDQSU0 FSDATAU[0.31] /FSWE /FSCAS /FSRAS FSBKSEL0 FSBKSEL1 FSCLK+ FSCLKFSCKE FSADDR[0.11] FSDQM1 FSDQM0 FSDQSU3 FSDQSU2 FSDQSU1 FSDQSU0 FSDATAU[0.31] /FSWE /FSCAS /FSRAS FSBKSEL0 FSBKSEL1 FSCLK+ FSCLKFSCKE FSADDR[0.11] 5.Frame Memory +2.5V_DMQ +2.5V_DMC

+2.5V_DMQ+2.5V_DMC

B6 VCC12V_AUDIO VCC12V_AUDIO AUDIO_MU AUDIO_SD VOLUME 7.AUDIO B4 VCPU VCC12V_AUDIO +3.3DV1 +3.3DV2 AVDDPLL2 AVDDPLL AVDDA AVDD_DVI +APLL VDDC VDD_MPLL onPOWER AdjBACKLITE onBACKLITE onPanel_5V/3.3V VCPU VCC12V_AUDIO +3.3DV1 +3.3DV2 VLCD AVDDPLL2 AVDD_PLL AVDDA AVDD_DVI +APLL VDDC VDD_MPLL +2.5MVDD +2.5V_DMQ +2.5V_DMC AdjBACKLITE Volume

FSDATAU[0.31]

FSDDR[0.11]
+2.5V_DMC +2.5V_DMQ+2.5MVDD
715G1765-1 for AL2051W (acer)
4.SCALER Size B Date: Document Number Rev

2.POWER

Tuesday, January 03, 2006 Sheet 2 of 8

VCC5V L701A1 NC

VCC12V VCC5V 09/27 Modified by SC

VCC5V VLCD 5 VCC12V

R703 1/16W NC

R704 10K 1/16W 1/16W

C771 R717 0.1uF/16V D G Q701 AO3401 S C772 R705 R707 NC 1/16W 0 C703 100uF/16V 1/16W R710 10K 0 1/16W VCC5V+ R728 10K 0 1/16W 1/16W onBACKLITE 7 +2.5MVDD UVI GND VO VO C721 + C727 0.1uF 47uF/25V 1 LOHM C747 0.1uF 1/16W R725
U701 S S S G D D D D D704 SBM84PT
L701 22uH FB701 D705 SBM84PT + C706 220uF/16V + + + C707 C708 C709 220uF/16V 220uF/16V 220uF/16V C773 1000pF OHM VCPU VCPU 7
R708 51K R709 4.7K 7 onPanel_5V/3.3V 1/16W B C Q702 PMBS3904 D125 0.1uF E

C710 1uF/25V 0805 VCC12V

AM4811P-T1-PF

(NC)0.1uF/16V

C704 R719 62K 1/10W 1% 4 C711 1000pF 0805

(NC)1uF/16V +

CN+12V_IN 2 JACK 4
LP701 U2 + 1 BEAD + R721 C705 C774 20K 1/10W 220uF/16V 220uF/16V 0805 C701 1000pF 5 VIN ISENSE PGATE GND PWRGND NC ADJ FB LM3485

LL5232B 5.6V 5%

D702 R720 20K 1/10W 1% 0805 C712 0.0047uF 0805

SMB340

VCC5V 09/27 Modified by SC
R722 10K VCC12V MH1 MH4 MH5 MH6 FBOHM VCC12V_AUDIO FBOHM VCC12V_AUDIO onPOWER FBOHM R727 4.7K 1/16W B C 1/16W

R723 10K 1/16W 1/16W

C776 0.1uF/16V D G S CAO3401 R724 1/16W

R726 51K

Q705 PMBS3904 (NC)0.1uF/16V

C775 D706 0.1uF NC

C778 100uF/16V
VCC12V VCC5V C713 + C714 0.1uF/16V 220uF/16V R711 10K ON_OFF R712 4.7K 1/16W VCC5V C715 R714 CONN C723 + 0.1uF C724 0.1uF +3.3DVDD +3.3DVDD U705 AIC1084-33M C731 0.1uF VIN ADJ VOUT VOUT C730 47uF/16V + FB705 C732 0.1uF NC LOHM + C733 10uF/50V VCPU + 1K C716 1/16W 1K R715 0.1uF E 1/16W C R713 4.7K B Q703 PMBS3904

VCC5V+

Change to TO-252
UVin ADJ Vo2 Vo4 +3.3AVDD

+3.3AVDD for AVDD_DVI

AVDD_DVI +3.3AVDD L702

pin4,pin10

AVDD_DVI 5
AIC1084-33PE C718 0.1uF C717 47uF/16V + C719 0.1uF 120 OHM C722 10uF/50V 1
C Q704 R716 B PMBS3904 E 1K 1/16W AdjBACKLITE 5

TO-263

22uF/16V
+3.3AVDD for AVDD_PLL +3.3AVDD

AVDD_PLL AVDD_PLL 5 LOHM

C734 0.1uF
Change to AZ1084-18 TO263 U703
+1.8V_VDD Vin GND 3 Vout Vout C720 CAP1084D18 47uF/16V + C729 47uF/25V 0.1uF

+2.5VM

C726 0.1uF

+3.3AVDD for AVDDA

+3.3AVDD LOHM + C749 10uF/50V +3.3DV1
PLL_GND AVDDApin17,pin34 AVDDA C750 0.1uF C751 0.1uF 5

C728 0.1uF

+3.3DVDD L707

pin162,pin182

+3.3DVOHM + C753 10uF/50V C754 0.1uF C755 5

1.8V for VDDC

+1.8V_VDD L705
pin63,pin79,pin131, pin156,pin173,pin185,pin195

+2.5MVDD +2.5MVDD 5

pin86, pin102,pin113 ,pin125,pin139,pin154

3.3V(6251) for AVDD_PLL2

AVDDPLL2 +3.3AVDD LOHM C758 10uF/50V
120 OHM + C736 0.1uF +APLL +APLL + C756 10uF/50V C757 0.1uF 5 C737 0.1uF C738 0.1uF C739 0.1uF C740 0.1uF C741 0.1uF C742 0.1uF
5 C743 0.1uF C744 0.1uF C745 0.1uF C746 0.1uF C748 0.1uF

pin109

AVDDPLL2 5

Audio PLL 1.8V

+1.8V_VDD LOHM

C735 10uF/50V

+3.3DVDD L711

C759 0.1uF

+3.3DV2
+3.3DVOHM C760 10uF/50V + C762 0.1uF 5

+3.3V for VDD_MPLL

+3.3AVDD LOHM C765 10uF/50V

PLL_GND

VCC5V+ UC763 47uF/25V + C766 0.1uF Vin ADJ Vo2 Vo4 + C764 47uF/25V C767 0.1uF L714 C768 0.1uF 120 OHM
2.5V FOR DDR L712 +2.5V_DMC

+2.5V_DMC 6

PLL_GND VDD_MPLL

pin204

VDD_MPLL 5
Remove C94/C95/U13 +3.3DV1=>LCD I/F Pad +3.3DV2=>Host bus 0414
C769 0.1uF L709 PLL_GND PLL_GND 120 OHM
AIC1084-33PE 1 +2.5V_DMQ 120 OHM C770 0.1uF +2.5V_DMQ 6 Size C Date: Title

Document Number Rev

Tuesday, January 03, 2006 Sheet 3 of 8
15 D101 D102 TZMC5V6-GS08 TZMC5V6-GS08

FB101 FB102 FB103

1/16W 1/16W 1/16W R106 1/16W R107 1/16W R101 C101 NC C106 NC C107 NC

R102 R103 R104 R105

100 470
1/16W C102 0.047uF 1/16W C103 0.047uF 1/16W C104 0.047uF 1/16W C105 0.001uF

RIN GIN BIN SOG

PC5V VGA_CON 75
R108 R109 R3 D103 BAV99 D104 BAVD105 BAV99 VCC5V C0.1uF C2 0.1uF C113 0.1uF 1 R111 10K VCC5V
1/16W C108 0.047uF 1/16W C109 0.047uF 1/16W C110 0.047uF

GNDR GNDG GNDB

1/16W 100 1K 1K 1/16W 1/16W 1/16W VCC5V 2 PC5V 1 D106 BAVR118 10K 1/16W R119 10K 1/16W R120 4.7K 1/16W 6 5
R112 HSI VSI FB104 R150 OHM 1/16W R113 R115

ST_DETHSYNC VSYNC 5 5

D107 TZMC5V6-GS08

D108 TZMC5V6-GS08

R116 2.2K 1/16W

C114 33pF

R117 10K 1/16W

C115 220pF

D109 TZMC5V6-GS08
U101 VCC WP SCL SDA A0 A1 A2 GND 3 4

C116 0.1uF

CLK_DDC DAT_DDC CN102 R G B RGB GND HSYNC VSYNC SYNC GND DDC SCL DDC SDA +5V HPD 1/3shield 2/4shield 0/5shield clk shield DAT0+ DAT0DAT1+ DAT1DAT2+ DAT2DAT3+ DAT3DAT4+ DAT4DAT5+ DAT5clk+ clkD117 BAV99 D118 BAV99 D119 BAV99 D120 BAV99 D121 BAV99 D122 BAV99 D123 BAVD124 BAV99 VCC5V R123 10K 1/16W D110 TZMC5V6-GS08

R121 R122

100 100

1/16W 1/16W

M24C02WMN6 D111 TZMC5V6-GS7 DDC_DAT DDC_CLK VCC5V 2 DVI5V 1 D112 BAV70 3

R124 CLK_DDC2 DAT_DDC2

ST_DETR125 R126

R127 10K 1/16W

R128 NC

D113 LL5232B 5.6V 5%

D114 LL5232B 5.6V 5%

D115 LL5232B 5.6V 5%

D116 LL5232B 5.6V 5%
C117 0.1uF R132 R133 R134 R135 R136 R10 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W B+ BG+ GR+ R10K

R129 1/16W

R130 10K 1/16W R131 4.7K 1/16W 6 5
U102 VCC WP SCL SDA A0 A1 A2 GND 3 4

C118 0.1uF

M24C02WMN6
R138 NC R139 R10 1/16W 1/16W CLK+ CLK5 5

DDC_WP 7

VCC5V 2

C2 0.1uF

C126 Title 1 0.1uF Size B Date:
715G1765-1 for AL2051W(acer)
Tuesday, January 03, 2006 Sheet 4 of 8

CONNECTOR for PANEL

GND +3.3DVVDD_MPLL 3 AVDDA VDD_MPLL 3 AVDD_DVI AVDDA 3 +2.5MVDD AVDD_DVI +3.3DV2 +3.3DV2 +3.3DV3 +APLL +2.5MVDD AVDD_PLL +APLL AVDDPLLVDDC VDDC 3 AVDD_PLL AVDDPLL2
For AOC LCD I/FF/W default set Odd/Even Swap. 4/13/93
TXA0TXA1TXA2TXACTXA3TXB0TXB1TXB2TXBCTXB3-
TXA0+ TXA1+ TXA2+ TXAC+ TXA3+ TXB0+ TXB1+ TXB2+ TXBC+ TXB3+

GND VLCD CONN GND

AVDD_APLL

AVDD_PLL

VDDP VDDP VDDP

AVDD_PLL2

AVDD_MPLL
VDDM VDDM VDDM VDDM VDDM VDDM

AVDD_ADC AVDD_ADC

AVDD_DVI AVDD_DVI
VDDC VDDC VDDC VDDC VDDC VDDC VDDC
NC NC NC NC NC NC NC NC NC NC

Unloaded trace impedance on this interface is 90 Ohm Loaded trace impedace with DRAM load is 65 Ohm (for 2.5 inch total trace length)

205 206

Size C Date: Document Number

Scaler (MST9251A)

Tuesday, January 03, 2006 Sheet 5 of 8

+2.5V_DMQ

+2.5V_DMC

+ C301 22uF/50V

C302 0.1uF

C303 0.1uF

C304 0.1uF

C305 0.1uF

C306 0.1uF

C307 0.1uF

C308 0.1uF

C309 0.1uF

C310 0.1uF

C311 0.1uF

C312 0.1uF

C313 0.1uF

C314 0.1uF

C315 0.1uF

+ C317 22uF/50V

C318 0.1uF

C319 0.1uF

C320 0.1uF

C321 0.1uF

C322 0.1uF

C323 0.1uF

C324 0.1uF

C325 0.1uF

GND 3 +2.5V_DMQ

+2.5V_DMQ 3 +2.5V_DMC

+2.5V_DMC FSVREF

LAYOUT Joyce request
C6 C7 D3 D10 K3 K6 K7 K10 M12
B2 B4 B6 B7 B9 B11 D2 D11 E3 E10 F3 F10 H3 H10 J3 J10

UFSADDR[0.11]

FSDATA[0.31] RN301 DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 DQ8 DQ9 DQ10 DQ11 DQ12 DQ13 DQ14 DQ15 DQ16 DQ17 DQ18 DQ19 DQ20 DQ21 DQ22 DQ23 DQ24 DQ25 DQ26 DQ27 DQ28 DQ29 DQ30 DQ31 VSSQ VSSQ VSSQ VSSQ VSSQ VSSQ VSSQ VSSQ VSSQ VSSQ VSSQ VSSQ VSSQ VSSQ VSSQ VSSQ VSSQ VSSQ VSSQ VSSQ A6 B5 A5 A4 B1 C2 C1 D1 J12 J11 H12 H11 F12 F11 E12 E11 E2 E1 F2 F1 H2 H1 J1 J2 D12 C12 C11 B12 A9 A8 B8 A7 A3 A10 C3 C4 C5 C8 C9 C10 D5 D8 E4 E9 F4 F9 G4 G9 H4 H9 J4 J9 FSDATA16 FSDATA17 FSDATA18 FSDATA19 FSDATA20 FSDATA21 FSDATA22 FSDATA23 FSDATA0 FSDATA1 FSDATA2 FSDATA3 FSDATA4 FSDATA5 FSDATA6 FSDATA7 FSDATA24 FSDATA25 FSDATA26 FSDATA27 FSDATA28 FSDATA29 FSDATA30 FSDATA31 FSDATA8 FSDATA9 FSDATA10 FSDATA11 FSDATA12 FSDATA13 FSDATA14 FSDATA15 FSDATA24 FSDATA25 FSDATA26 FSDATA5 RN302 FSDATA28 FSDATA29 FSDATA30 FSDATA31 FSDATA8 FSDATA9 FSDATA10 FSDATA11 FSDATA12 FSDATA13 FSDATA14 FSDATA5 RN5 RN5 RN305 FSDATA0 FSDATA1 FSDATA2 FSDATA5 RN306 FSDATA4 FSDATA5 FSDATA6 FSDATA7 FSDATA16 FSDATA17 FSDATA18 FSDATA19 FSDATA20 FSDATA21 FSDATA22 FSDATA5 RN5 RN5
VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ
VDD VDD VDD VDD VDD VDD VDD VDD VREF
FSCLK+ R1/16W 1% FSCLKPlace this parallel termination close to corresponding memory IC Pins
FSADDR0 FSADDR1 FSADDR2 FSADDR3 FSADDR4 FSADDR5 FSADDR6 FSADDR7 FSADDR8 FSADDR9 FSADDR10 FSADDR11 FSBKSEL0 FSBKSEL1 FSCLKFSCLK+ FSCKE /FSRAS /FSCAS /FSWE R301 R302 R303 R33 1/16W 1/16W 1/16W 1/16W FSDQS3 1/16W 1/16W FSDQS1 1/16W FSDQS2 1/16W FSDQS0 FSDQM11 FSDQM01 FSDQM00 FSDQM10
M4 M5 L5 M6 M7 L8 M8 M9 M10 L7 K5 L6 M3 L4 L11 L10 M11 M1 L1 K1 K2 A1 G12 G1 A12 A2 G11 G2 A11

A0 A1 A2 A3 A4 A5 A6 A7 A8/AP A9 A10 A11 BA0 BA1 CK# CK CKE CS# RAS# CAS# WE# DQS0 DQS1 DQS2 DQS3 DM0 DM1 DM2 DM3
1/16W FSDATAU24 FSDATAU25 FSDATAU26 FSDATAU27 1/16W FSDATAU28 FSDATAU29 FSDATAU30 FSDATAU31 1/16W FSDATAU8 FSDATAU9 FSDATAU10 FSDATAU11 1/16W FSDATAU12 FSDATAU13 FSDATAU14 FSDATAU15 1/16W FSDATAU0 FSDATAU1 FSDATAU2 FSDATAU3 1/16W FSDATAU4 FSDATAU5 FSDATAU6 FSDATAU7 1/16W FSDATAU16 FSDATAU17 FSDATAU18 FSDATAU19 1/16W FSDATAU20 FSDATAU21 FSDATAU22 FSDATAU23 FSDATAU16 FSDATAU17 FSDATAU18 FSDATAU19 FSDATAU20 FSDATAU21 FSDATAU22 FSDATAU23 FSDATAU24 FSDATAU25 FSDATAU26 FSDATAU27 FSDATAU28 FSDATAU29 FSDATAU30 FSDATAU31 FSDATAU0 FSDATAU1 FSDATAU2 FSDATAU3 FSDATAU4 FSDATAU5 FSDATAU6 FSDATAU7 FSDATAU8 FSDATAU9 FSDATAU10 FSDATAU11 FSDATAU12 FSDATAU13 FSDATAU14 FSDATAU15

FSDATAU[0.31] 5

FSBKSEL0 FSBKSEL1 FSCLKFSCLK+ FSCKE /FSRAS /FSWE
LAYOUT Joyce request 5 /FSCAS
FSDQSU2 FSDQSU0 FSDQSU3 FSDQSU1 FSDQM1 R305 R306 RFSDQM0 R308
Near The DDR-SDRAM IC Stub as short as possible.

+2.5V_DMQ FSVREF

R309 10K 1/16W FSVREF
B3 B10 G3 G10 K8 K11 K12 L2 L3 L9 L12 M2
NC NC NC NC NC NC NC NC NC NC NC NC VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS

Near The DDR-SDRAM IC

R310 10K 1/16W

C316 0.1uF

EM6A9320BI-5M GND GND GND Size B Date: Title
D4 D6 D7 D9 E5 E6 E7 E8 F5 F6 F7 F8 G5 G6 G7 G8 H5 H6 H7 H8 J5 J6 J7 J8 K4 K9

Frame Memory

Tuesday, January 03, 2006 Sheet 6 of 8
VCPU 3 VCPU 1/16WR452 1/16WR453 1/16WR454 1/16WR8
RP401 R464 10K C432 22pF X402 C433 10uF/16V 20MHz 20 UVCC MAX810STR RST 2 D401 R1/16W INT RR1/16W 1/16W INT0/P3.2 INT1/P3.3 T0/P3.4 T1/P3.5 P0.7 P0.6 P0.5 P0.4 P0.3 P0.2 P0.1 P0.0 GND P4.2 P4.3/ISP C434 22pF 21 + VCPU EA/VP X1 X2 RESET P2.0 P2.1 P2.2 P2.3 P2.4 P2.5 P2.6 P2.7 RD/P3.7 WR/P3.6 PSEN ALE/P TXD/P3.1 RXD/P3.0 P4.0 P4.1 C431 10K 0.1uF 1/16W U23 34

RP402 10K 1/16W

10K 2 1
P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7
AD0 AD1 AD2 AD3 RD WR POWER ENTER RIGHT LEFT AUTO WP VCPU R457 R456 R419 R420 R422 R424 10K 10K NC NC 1/16W 1/16W 1/16W 1/16W DDC_DAT DDC_CLK TXD RXD
R440 22K 1/16W B R441 10K 1/16W C445 0.1uF/16V C Q403 PMBS3904 E DDC_WP 4

LL4148-GS08 10K

Reset Circuit
VCPU C435 U403 0.22uF A0 A1 A2 GND VCC WP SCL SDA NC R409 R413 10K 1/16W R416 10K 1/16W 10K 1/16W WP

onPOWER 3

R1/16W R423 10K R425 10K R426 R429 10K 10K
AT24C16N-10SC-2.7 R8 AUDIO_SD AUDIO_MU
1/16W 1/16W 1/16W Standby 1/16W Mute

LED_O LED_B

C437 0.1uF

C438 0.1uF

4 ST_DETST_DETHWRESET 5 ALE 3 onPANEL_5V/3.3V 3 onBACKLITE R458 R459 R460 R461 10K 10K 10K 10K 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W

MTV416/W79E632

For Hardware ISP
ISP_ON R718 10K 1/16W RIGHT

R462 10K R463 10K

ENTER RIGHT

RRR432 R470 470

1/16W 1/16W 1/16W 1/16W 1/16W
KEY_MENU KEY_RIGHT KEY_AUTO KEY_LEFT KEY_ONOFF
RE R437 LED_B 4.7K 1/16W C B 1/16W E

R1/16W R438 B 4.7K

AUTO LEFT

POWER R436 LED_O 1/16W

LED_GRN

LED_ORANGE

D404 BAV99

D405 BAV99

D406 BAV99

D407 BAV99

Q401 PMBS3906

Q402 PMBS3906

D408 BAV99 VCPU SW401 SW402 KEY LEFT SW403 KEY AUTO SW404 KEY RIGHT SW405 KEY MENU
DP1 D402 BAV3 DUAL LED D403 BAV1 C443 C442 C441 C440 C439

LCD ONOFF

0.001uF 2 C451 1000pF 1

0.001uF

C452 1000pF Title
Size B Date: Document Number

Sheet 7 of 8

Tuesday, January 03, 2006

VCC12V_AUDIO

3 VCC12V_AUDIO + C601 220uF/16V U601 TDA7496L + C602 220uF/16V C603 0.1uF
CNPHONEJACK R601 18K R602 18K 1/16W AUDIO_SD AUDIO_MU 1/16W C604 C606 0.47uF/16V 0.47uF/16V 12 INL INR
OUTL OUTR SVR VAROUT_R VAROUT_L

5 R603 1K 1/16W

C605 C607

220uF/16V 220uF/16V

OUT_L OUT_R

VOLUME STBY MUTE

GND GND GND GND GND GND GND
C609 20K R605 1/16W C611 100pF 20K R606 1/16W C612 100pF 1uF

C610 1uF

R607 Volume 220K C613 0.1uF 1/16W 5

CNEAR PHONEJACK 3 4

R608 R609

OUT_R OUT_L

SPEAKER CONN Title

+ C608 220uF/16V

R604 1K 1/16W
Size A4 Date: Document Number
Tuesday, January 03, 2006 Sheet 8 of 8

Power/Inverter board

C801 33pF/3KV D801 SB240 CN805 VIN VIN ON/OFF DIM GND GND L3 200uH Q804 DTC144WKA 1 Q803 PMBS3904 R0805 R806 10K 0805 C815 1uF/0805 C813 1uF/25V RC812 104/4 R0805 RIC2 R820 NC 1 C822 2.2uF/1206 C825 1uF/0805 C829 0.0068uF/25V R826 39K 0805 R828 NC R831 39K NC 2 Q809 RK7002 R832 NC R834 51K 1 R833 130K 0805 D811SB240 + Q811 AMR836 N.C C837 104/3 82K R839 C842 1uF/0805 NC R840 NC SB240 DS1N D1N RG1N D1N S2P D2P G2P D2P Q812 FSI4502 SB240 D816 R850 620K 0805 JP1 C845 470pF C844 220pF D817 D818 N.C 1N4148 1/4W RS1N D1N G1N D1N S2P D2P G2P D2P C838 4.7uF/1206 X5R C840 0.022uF/0805 X7R C831 4.7uF/1206 X5R C834 33pF/3KV D1M 0805 RC839 0.01uF/0805 C832 470uF/25V C4.7uF/1206 X5R 1 PT802 80LL17T-16 C835 10pF/3KV C836 33pF/3KV C830 33pF/3KV R825 NC Q807 NC Q806 NC 3 R819 NC R822 9.1k 20 N.C 17 R824 1M/ 0805 NC 16 C14 CR0805 R829 15K 0805 NC C828 0.047uF/0805 Q808 RK7002 NC C846N.C C827 470pF C823 220pF D808 1N4148 C821 220PF/0805 R821 30K 0805 R823 620K DN.C R817 120K 1/8W C820 C817 0.047uF/0805 NDRV_B PDRV_A CT S1N D1N G1N D1N S2P D2P G2P D2P N.C D805 1N4148 N.C 2M 0805 RC847 0.1uF/0805 C848 0.1uF/0805 Q802 DTA144WKA R801 2.4K R1206 ZD801 5.6V 10K RZD802 5.6V R803 10K 085 C805 104/L805 200uH C802 33pF/3KV 470uF/25V C803 + FSI4502 Q801 S1N D1N G1N D1N S2P D2P G2P D2P 8 C806 4.7uF/1206 X5R 5 4.7uF/1206 X5R C809 SB240 D802 SB240 D2 C807 4.7uF/1206 X5R C810 C811 D803 BAV99 R0805 R863 1K 7 C808 10pF/3KV R862 1K 2 C804 33pF/3KV 5

CONN 33G8020-5D-U

33L8009-6N-H
0.022uF/0805 X7R N.C PT801 80LL17T-16

33G8021 2D U

ZD803 5.6V C814 0.1uF/0805 2

L801 L

R809 120K 1/8W L802 L
Q805 FSI4502 R811 R812 SB240 D806 R814 2M 0805 120K 1/8W R855 0805
C816 0.22uF/0805 C818 1.0uF/0805 C819 1uF/R818 0805

2 R856 0

R816 2M 0805

CTIMR OVP ENA

R861 1K 0805

OZ1060

SST VDDA GNDA REF RT1 FB CMP
RT PWRGND LCT DIM LPWM PDRV_C NDRV_D

layout

D4148 D810 BAV99 R1% 3

CNCONN 33G8020-5D-U

Q810 PMBS3906 NC

N.C C841

D812 BAV2
R865 1K 2 R864 1K 0805 R0805
R846 R847 2M 4 120K 1/8W D815 1N4148 N.C N.C R841 2M R866 1K 0805 1/8W

C843 104/0805

L803 L R844 R854

R842 2M 0805

R843 L804 L 120K

R853 0

R848 2M 0805

R849 120K

is power GND

is signal GND

Q813 RK7002

D820 BAV99 R1% 0805

AOC (Top Victory) Electronics Co., Ltd.

R851 15K 0805 Title

Size Document Number Custom Tuesday, January 03, 2006 Date: Sheet

Acer Computer (Shanghai) Limited
3F, No. 168 Xizang medium road, Huangpu District, Shanghai, China
Declaration of Conformity
3F, No. 168 Xizang medium road, Huangpu District, Shanghai, China Contact Person: Mr. Easy Lai Tel: 886-2-8691-3089 Fax: 886-2-8691-3000 E-mail: easy_lai@acer.com.tw

Hereby declare that:

Product: Trade Name: Model Number: SKU Number:
20 LCD Monitor Acer AL2051W AL2051Wxxx (x = 0~9, a ~ z, A ~ Z or Blank)
Is compliant with the essential requirements and other relevant provisions of the following EC directives, and that all the necessary steps have been taken and are in force to assure that production units of the same product will continue comply with the requirements.
EMC Directive 89/336/EEC as attested by conformity with the following harmonized standards:
-. EN55022:1998 + A1:2000 + A2:2003, AS/NZS CISPR22:2002, Class B -. EN55024:1998 + A1:2001 + A2:2003 -. EN61000-3-2:2000, Class D -. EN61000-3-3:1995 + A1:2001
Low Voltage Directive 73/23/EEC as attested by conformity with the following harmonized standard:

-. EN60950-1:2001

RoHS Directive 2002/95/EC on the Restriction of the Use of certain Hazardous Substances in Electrical and Electronic Equipment
--------------------------------
Easy Lai / Director Acer Computer (Shanghai) Limited