Acer AL2051W Schematic

Acer AL2051W

Service Guide

1

Service Guide Version and Revision

No. Version Release Date Revision History

1

2

1.0

2.0

Dec-15-2005

Jan-04-2006

Initial release

(Draft Version)

Final Version

TPV Model

TA90KAUHKGAEAP

TA90KAUDBGAFACP

2

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 Denotes actual messages that appear on screen.
NOTE Gives bits and pieces of additional information related to the current topic.
WARNING Alerts you to any damage that might result from doing or not doing specific

actions.

CAUTION Gives precautionary measures to avoid possible hardware or software

problems.

IMPORTANT Remind you to do specific actions relevant to the accomplishment of

procedures.

3

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.

®

Warning:

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

4

Precautions



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

in a wet basement.

 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 manufacturer or sold
with the monitor. If you mount the monitor on a wall or shelf, uses a mounting kit approved by the manufacturer
and follow the kit instructions.

 Slots and openings in the back and bottom of the cabinet are 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.

 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.

 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 adapte r to g round the appliance safely. Do not defeat the
safety purpose of the grounded plug.

 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.

 Do not overload power strips and extension cords. Overloading can result in fire or electric shock.
 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.

 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

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

configured receptacles marked between 100 - 240V AC, Min. 5A.

 The wall socket shall be installed near the equipment and shall be easily accessible.
 For use only with the attached power adapter (Output 12Vdc), which has UL, CSA listed license.

Special Notes On LCD Monitors

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

Notes

 Due to the nature of the fluorescent light, the screen may flicker during initial use. Turn of f the Power Switch and

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

 You may find slightly uneven brightness on the screen depending on the desktop pattern you use.
 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.

 Due to the nature of the LCD screen, an afterimage of the previous screen may remai n after swit ching 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.

5

Table Of Contents

Chapter 1 Monitor Features ……………………………………… 6

Introduction ……………………………………… 7
Electrical Requirements ……………………………………… 8
LCD Monitor General Specification ……………………………………… 9
LCD Panel Specification ……………………………………… 10
Support Timing ……………………………………… 11
Block Diagram ……………………………………… 12
Main Board Diagram ……………………………………… 13
Software Flow chart ……………………………………… 14
Main Board Layout ……………………………………… 16
Front Bezel ……………………………………… 17
Rear Bezel ……………………………………… 18

Chapter 2 Operating Instructions ……………………………………… 19

External Controls ……………………………………… 19
Front Panel Controls ……………………………………… 20
Adjusting the picture ……………………………………… 21
Hot-Key Menu ……………………………………… 24
OSD Message ……………………………………… 24
Logo ……………………………………… 25

Chapter 3 Machine Disassembly ……………………………………… 26

Chapter 4 Troubleshooting ……………………………………… 34

Chapter 5 Connector Information ……………………………………… 40

Chapter 6 FRU (Field Replacement Unit) List ……………………………………… 41

Exploded Diagram

……………………………………… 42

Chapter 7 Schematic Diagram ……………………………………… 46

Main Board ……………………………………… 46
Power/Inverter Board ……………………………………… 53

6

Monitor Features

Chapter 1

Introduction

Scope

This specification defines the requirements for the 20” MICROPROCESSOR based Multi-mode supported high
resolution color LCD monitor . This monitor can be dire ctly connected to general 1 5 pin D-sub VGA connector and 24
pin DVI connector. It also support s VESA DPMS power management and plug & play function. There is a build-in
stereo audio amplifier with OSD control to drive a pair of speakers.

Description

The LCD monitor is designed with the latest LCD technology to provide a performance oriented product with no
radiation. This will alleviate the growing health concerns. It is also a space saving design, allowing more desktop
space, and comparing to the traditional CR T monitor , it co nsume s less po wer an d gets less weight in addition MTBF
target is 50k hours or more.

Chart of AL2051W

Panel

20” AUO M201EW01 V.2

D-SUB

Signal Interface

DVI

Sync Type

Separate / Compatible

Color Temp User Adjust
DDC
Speaker
Headphone Jack

Support
DDC2B
Yes
Yes

Microphone Jack
USB Hub
Tilt / Swivel

No
Not support
Yes / No

7

Electrical Requirements

Standard Test Conditions

All tests shall be performed under the following conditions, unless otherwise specified.

Ambient light
Viewing distance
Warm up time

All specifications :
Fully functional : 5 seconds

Measuring equipment

Control settings

User brightness control : Set to Factory preset value (cut off raster)
User contrast control : T Set to factory preset value, which allows that the brightest two

User red/white balance,
Green/white balance and
Blue/white balance control :

Power input
Ambient temperature

: Dark room (<1cd/m2)
: 40 cm for LCD performance, 20 cm for LCD failures

＞30 minutes

: Chroma 7120 signal generator or equivalent, directly

Connected to the monitor under test.
Minolta CA100 photometer, or equivalent

of 32 linear distributed gray-scales (0 ～ 700mv) can be
distinguished.

:
:

In the center (unless otherwise specified)

230V± 5％,
20+

5℃

50±3 Hz

Measurement systems

The units of measure stated in this document are listed below:
1 gamma = 1 nano tesla
1 tesla = 10,000 gauss
cm = in x 2.54
Lb = kg x 2.2
Degrees F = [°C x 1.8] + 32
Degrees C = [°F - 32]/1.8
u' = 4x/(-2x + 12y + 3)
v' = 9y/(-2x + 12y + 3)
x = (27u'/4)/[(9u'/2) - 12v' + 9]
y = (3v')/[(9u'/2) - 12v' + 9]
nits = cd/(m2) = Ft-L x 3.426
lux = foot-candle x 10.76

8

LCD Monitor General Specification

Panel type

Display size

Display mode

Pixel pitch

Pixels (H x V)

Pixel clock

Contrast ratio

20.1 inch-wide Color TFT-LCD Module
M201EW01.

433.44 (H) x 270.90(V)

VGA : 640 × 480 (60/72/75/85 Hz)

SVGA : 800 × 600 (56/60/72/75/85 Hz)

XGA : 1024 × 768 (60/70/75/85 Hz)

SXGA : 1280 × 1024 (60/75/85Hz)
WSXGA: 1680 x 1050 (60Hz)

WSXGA: 1680 x 1050 (75Hz) D-SUB only

0.258 (per one triad) x 0.258

1680(x3) x 1050

202 MHz (Max)

800: 1 (Typ)

Brightness

Response time (Tr/Tf)
Display color

Viewing angle
Pc interface

Signal connector

Interface frequency

Plug & play

Power Input voltage

300 cd/m2 @6mA (Typ)

16 ms

16.7M colors (RGB 8-bit data)

176°(H)/176°(V)
RGB Analog Interface

Digital interface

D-Sub 15pin

DVI-D 24pin

Horizontal Frequency 30KHz ----91KHz

Vertical Frequency 55Hz ------85Hz

VESA DDC2B, VESA DPMS

230V± 5％, 50± 3 Hz

Total output power

Weight

49Watt max.

Unpacked: 5.4 Kg Packed: 7.3 Kg

9

LCD Panel Specification

LCD Panel Model (AU M201EW01)

 Display Type active matrix color TFT LCD
 Resolution 1680 x 1050
 Display Dot
 Display Area 433.44mm(H) x 270.90mm(V)
 Pixel Pitch 0.258mm(H) x 0.258mm(V)
 Display Color 16.7M (true)
 Lamp Frequency 50kHz(Max.)
 Lamp Current 6.0 mArms (typ)
 Weight 2950g (typ)

Optical Specifications

The optical characteristics are measured under stable conditions at 25℃:

1680(x3) x 1050

10

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.

11

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.

(Include: Inverter and

Power Board

adapter board)

AC-IN
100V-240

CCFL Drive.

Main Board

(Include: Audio and Keypad board)

Host Computer

Flat Panel and
CCFL backlight

Video signal, DDC

RS232 Connector For
white balance adjustment
in factory mode

12

Main Board Diagram

(

)

(

)

(

)

OSD Control

KEY PAD

MCU

W79E632

(U402)

Panel connector

(CN407)

MST9251A-LF-205

(Include: ADC, OSD etc)

(U401)

Frame

Memory

(U303)

EPR_SDA

EPR_SCL

EEPROM

AT24C16AN-10SU-2.7

U403

RXD
TXD

D-Sub Connector

(CN101)

DB15_SDA
DB15_SCL

EEPROM

M24C02-WMN6TP

U101

RGB

H sync
V sync

DVI Video Signal

DVI Connector

(CN102)

DVI_SDA
DVI_SCL

M24C02-WMN6TP

EEPROM

U102

13

Software Flow Chart

18

N

N

10

12

14

19

1

Y

2

N

4

N

5

Y

6

N

7

Y

9

N

Y

Y

Y

11

13

15

17

3

8

N

Y

N

16

Y

14

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?

15

Main Board Layout

1

Label Part No. Description

CN603 88G 30211K PHONE JACK 5PIN
CN602 88G 30214K PHONE JACK 5PIN
CN701 88G 3041CE DC JACK 3PIN
CN101 88G 35315F H D-SUB 15PIN
CN102 88G 35424F H DVI CONNECTOR 24PIN

X401 93G 22 53 CRYSTAL 14.318MHzHC-49U

X402 93G 22 55 H
U401 56G 562120 MST9251A-LF-205
U402 56G1125170AC1 W79E632 BY WINBOND

20MHZ/20PF/49US

16

Front Bezel

External Controls

Item Description Item Description

1. >/ Volume 4. MENU/ENTER

2. </ Volume 5. Auto Adjust Key/Exit

3. Power Key/Power Indicator

17

Rear Bezel

Item Description Item Description

1. D-SUB Cable 4. External Adapter

2. DC-Jack Power Cable 5. DVI Cable

3. AC Power Cord 6. Audio Cable

18

Operating Instructions

Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the
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

External Controls

Item Description Item Description

1. >/ Volume 4. MENU/ENTER

2. </ Volume 5. Auto Adjust Key/Exit

3. LED/Power Key

19

Front Panel Control

• Power Button:
Press this button to turn the monitor ON or OFF, and display the monitor’s 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.

20

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

21

b. The Description For Control Function

22

23

Hot-Key Menu

a. Outline

b. The Description For Hot-Key Function

Item Operation Icon Description

When the OSD is closed, press Left or

Volume

Right button will be Volume Hot-Key
Function

OSD Message

a. Outline

Volume of Audio adjustment. The Audio will be
Mute when volume=0

b. The Description For OSD Message

Item Description

Auto Config
Please Wait

Input Not

Supported

Cable Not

Connected

No Signal

When Analog signal input, if User Press Hot-Key “Auto”, will show this messa ge, 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.

24

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 DDC2B is a bi-directional data channel based on the I²C protocol. The host can request EDID informati on 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. Pressi ng a key o n the keybo ard, 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.

25

Machine Disassembly

Chapter 3

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

Disassembly Procedure

The back view

26

1. Remove two screws. (Fig 1)

2. Remove the hinge cover. (Fig 2)

3. Remove the one screw. (Fig 3)

Fig 1

Fig 2

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)

Fig 4

Fig 5

Fig 6

28

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 7

Fig 8

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 1 1)

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.

15. Remove the four screws and disconnect the wire harness. (Fig 15)

16. Remove the four screws. (Fig 16)

Fig 14

(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

33

Troubleshooting

Chapter 4

This chapter provides troubleshooting information for the AL2051W:

1. Main board

No power

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

Measure U703 PIN2=1.8V
U705 PIN2=3.3V

OK

X401 and X402 oscillate
waveforms are normal

OK

Replace U402

NG

Replace U401

NG

NG

NG

Reinsert or check the
Adapter/Inverter
section

Check CN201 or replace
U703, U705

Replace X401, X402

34

No picture (LED orange)

t

t

No picture

The button if under
control

OK

Measure U703 PIN2=1.8V
U705 PIN2=3.3V

OK

X402 oscillate

waveform is normal

OK

Check HS/VS from
CN407 is normal

OK

Replace U401

NG

NG

NG

X401oscillate

waveform is normal

OK

Check reset circuit of
U402 is normal

Replace U402

NG

Replace U703, U705

Replace X402

Check Corresponden
component

OK

NG

Replace X401

NG

Check Corresponden
component

35

White screen

f

White screen

Measure Q701 base
is high level?

NG

X401 oscillate
waveform is normal

Check Correspondent
component.

OK

Check Q701, Q702 is
broken or CN407 solder?

NG

OK

Replace Panel

OK

Check reset circuit o
U402 is normal

OK

Replace U402

NG

NG

Replace X401

Check Correspondent
component.

Note: 1. If Replace “MAIN-BOARD”, Please re-do “DDC-content” programmed & “WHITE-Balance”.

2. If Replace “ PWPC” only, Please re-do “ WHITE-Balance”

36

2. Power Board

No power

No power

Check AC line volt 110V or 220V

OK

NG

Check AC line

Check the voltage of C904(+)

OK

NG

Check F901, bridge rectified circuit

Check start voltage for the pin3 of IC901

OK

NG

Check R903, R904,IC901

Check the auxiliary voltage is between 10V-16V

OK

NG

Check Q902,Q903
Check T901, D902

Check D904, D905,IC902

37

V

3. Inverter Board

No backlight







Check L805 =12





OK

NG

Check adapter board

Check ON/OFF signal

OK

NG

Check main board

Check IC801 PIN5=5V+ -0.25V

OK

NG

Check Q802,Q804,ZD803 circuit

Check IC801 PIN18 triangular wave is normal

OK

NG

Check R821,C821

Check IC801 PIN11, 12,19,20

OK

NG

Check feedback

End no output debug

38

Keypad Board

OSD is unstable or not working

Is Keypad Board connecting normally?

Y

Is Button Switch normally?

Is Keypad Board Normally?

Y

Check Main Board

N

Connect Keypad Board

N

Replace Button Switch

N

Replace Keypad Board

39

Connector Information

Chapter 5

The following figure shows the connector locations on the monitor:

15
6

11 15

10

15 – Pin Color Display Signal Cable (D-sub)

Pin No. Description Pin No. Description

1. Red 9. +5V

2. Green 10. Logic Ground

3. Blue 11. Monitor Ground

4. Monitor Ground 12. DDC-Serial Data

5. DDC-Return 13. H-Sync

6. R-Ground 14. V-Sync

7. G-Ground 15. DDC-Serial Clock

8. B-Ground

24 – Pin Color Display Signal Cable (DVI)

Pin No. Description Pin No. Description

1. TMDS Data2- 13. TMDS Data3+

2. TMDS Data2+ 14. +5V Power

3. TMDS Data 2/4 Shield 15. Ground

4. TMDS Data4- 16. Hot Plug Detect

5. TMDS Data4+ 17. TMDS Data0-

6. DDC Clock 18. TMDS Data0+

7. DDC Data 19. TMDS Data 0/5 Shield

8. Analogue Vertical Sync 20. TMDS Data5-

9. TMDS Data1- 21. TMDS Data5+

10. TMDS Data1+ 22. DDC Clock Shield

11. TMDS Data 1/3 Shield 23. DDC Clock+

12. TMDS Data3- 24. DDC Clock-

40

FRU (Field Replaceable Unit) List

This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of AL2051W.Refer to this
chapter whenever ordering for parts to repair or for RMA (Return Merchandise Authorization).

NOTE: Please note WHEN ORDERING FRU PARTS, 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 SERVICE
PROVIDERS, your Acer office may have a DIFFERENT part number code from 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 for 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 to dispose it properly, or follow the rules set by your regional Acer office on how to return it.

Chapter 6

41

Exploded Diagram (Model: AL2051W)

42

Part List

Above picture show the description of the following component.

Item Picture Description Part No.

1

HINGE COVER-F

33G4967 QW L

2

3

HINGE COVER-B 33G4968 QT L

BEZEL 34G1782AQW B

BACK COVER 34G1784 QU B

4

MAIN FRAME 15G8290 1

43

5

6

7

SHIELDING 85G 732 1

PANEL 750GLUA1W1211N

MAIN BOARD AICA90KAUAEP

8

9

POWER BOARD ADPC1260AXP

INPC BOARD INPC2062AUA1P

44

10

11

12

SPEAKERS 78G 322 3B

BASE 34G1785 QW B

BASE BACK COVER 33G4965AQT 1L

13

HINGE HOLDER 20G 041 1

45

Schematic Diagram

Chapter 7

Main Board

MST9251A SCHEMATIC

B2

RIN
GNDR
GIN

GNDG
SOG
BIN
GNDB
HSYNC
VSYNC

R+
R­G+
G­B+
B­CLK+
CLK-

ALE
RD
WR
HWRESET
INT

AD0
AD1
AD2
AD3

Volume

AdjBACKLITE

4.SCALER

46

VLCD

VDD_MPLL

VDDC

+APLL

AVDD_DVI

AVDDA

AVDD_PLL

AVDDPLL2

+3.3DV2
+3.3DV1

+2.5MVDD

FSDQM1

FSDQM0
FSDQSU3
FSDQSU2
FSDQSU1
FSDQSU0

FSDATAU[0..31]

/FSWE
/FSCAS
/FSRAS

FSBKSEL0

FSBKSEL1

FSCLK+
FSCLK-

FSCKE

FSADDR[0..11]

VLCD

FSDATAU[0..31]

FSDDR[0..11]

+3.3DV1

+3.3DV2

AVDDPLL2

AVDDPLL

AVDDA

AVDD_DVI

+APLL

VDDC

VDD_MPLL

+2.5MVDD

+2.5V_DMQ

B5

5.Frame Memory

+2.5V_DMQ

+2.5V_DMC

FSDQM1

FSDQM0
FSDQSU3
FSDQSU2
FSDQSU1
FSDQSU0
FSDATAU[0..31]

/FSWE
/FSCAS

/FSRAS
FSBKSEL0
FSBKSEL1

FSCLK+
FSCLK­FSCKE
FSADDR[0..11]

Title

Size Document Number Rev

Date: Sheet

715G1765-1 for AL2051W (acer)

B

TOP

+2.5V_DMC

28Tuesday, January 03, 2006

1

of

VCPU

VCC12V_AUDIO

+3.3DV1

+3.3DV2

AVDDPLL2

AVDDPLL

AVDDA

AVDD_DVI

+APLL

VDDC

VDD_MPLL

+2.5V_DMC +2.5MVDD

+2.5V_DMQ

VCPU

VCC12V_AUDIO

B1

TXD
RXD

DDC_DAT
DDC_WP
ST_DET1 HSYNC
ST_DET2

3.INPUT

B3

ST_DET2

ST_DET1

DDC_WP

DDC_CLK

DDC_DAT

RXD
TXD

VCPU

onPANEL_5V/3.3V
onBACKLITE

onPOWER

6.MCU

B6

VCC12V_AUDIO

7.AUDIO
B4

onPOWER
onBACKLITE
onPanel_5V/3.3V
VCPU
VCC12V_AUDIO

+3.3DV1

+3.3DV2
AVDDPLL2

AVDD_PLL
AVDDA

AVDD_DVI

+APLL
VDDC

VDD_MPLL

+2.5MVDD

+2.5V_DMQ

+2.5V_DMC

2.POWER

RIN

GNDR

GIN

GNDG

SOGDDC_CLK

BIN

GNDB

VSYNC

CLK+

CLK-

ALE

WR

HWRESET

INT

AD0

AD1
AD2
AD3

AUDIO_SD

AUDIO_MU

AUDIO_MU
AUDIO_SD

VOLUME

AdjBACKLITE

VLCD

R+

R-

G+

G­B+

B-

RD

VLCD

VCC5V

R702
10K 1/16W

R709 4.7K 1/16W

VCC5V

R722
10K 1/16W

R727 4.7K 1/16W

VCC12V

VCC5V

09/27 Modified by SC

R703

R704

NC

10K 1/16W

R708 51K 1/16W

CE

Q702

B

PMBS3904

C704

0.1uF

VCC5V

R723
10K 1/16W

R726 51K 1/16W

CE

Q705

B

PMBS3904

C775

0.1uF

C771

0.1uF/16V

C772
(NC)0.1uF/16V

C702
(NC)1uF/16V

09/27 Modified by SC

C776

0.1uF/16V

C777
(NC)0.1uF/16V

G

G

+

C708

220uF/16V

+

C709

220uF/16V

VCC5V

FB701 600 OHM

C773
1000pF

0805

VCPU

VCPU 7

onPanel_5V/3.3V7

onPOWER7

D125

LL5232B 5.6V 5%

D706
NC

L701A1
NC

L701

D704

SBM84PT

22uH

D705

SBM84PT

FB702 120 OHM

R719
62K 1/10W 1%

0805

R720
20K 1/10W 1%

0805

C711
1000pF

0805

C712

0.0047uF

0805

FB703 120 OHM

+

C706

220uF/16V

+

C707

220uF/16V

1

C710
1uF/25V

0805

1
2
3
4

8
7 2
6
5

VCC12V_AUDIO

VCC12V_AUDIO 8

U701

S
S
S
G

AM4811P-T1-PF

U707

VIN

ISENSE
PGATE GND
PWRGND
ADJ

LM3485

8

D

7

D

6

D

5

D

1
3

NC

4

FB

C710綼　U701

VCC12V

LP701

CN701

1

6 3

+12V_IN

5

2

+

+

2

JACK

4 1

BEAD

MH1

1

MH3

1

C705

220uF/16V

MH4

MH5

1

1

MH8

MH7

1

1

C774

220uF/16V

MH6

MH9

1

1

R721

20K 1/10W

0805

MH10

1

VCC12V

C701
1000pF

0805

FB704 600 OHM

MH11

VLCD

D

Q701
AO3401

S

+

C703
100uF/16V

D702 SMB340

D

706
AO3401

S

+

C778
100uF/16V

VCC5V

VLCD 5

R7170 1/16W

VCC5V

R7240 1/16W

R7050 1/16W

R710
10K 1/16W

VCC5V+

R7250 1/16W

R728
10K 1/16W

VCC12V

R707
NC

VCC5V+

VCC5V+

+3.3DVDD

C718

0.1uF

C731

0.1uF

L707

120 OHM

Change to
TO-252

U702

ADJ

AIC1084-33PE

1

TO-263

U705
AIC1084-33M

3

VIN

VOUT
VOUT

1

ADJ

pin162,pin182

+

C753
10uF/50V

+3.3DVDD

L711

+

120 OHM

C760

10uF/50V

Remove C94/C95/U13
+3.3DV1=>LCD I/F Pad
+3.3DV2=>Host bus
0414

VCC12V

+

L712

120 OHM

L714

120 OHM

ON_OFF

VDDC

C742

0.1uF

+2.5V_DMC

+2.5V_DMQ

C720
47uF/25V

C768

0.1uF

C770

0.1uF

C713

220uF/16V

R712 4.7K 1/16W

+

VDDC 5

2.5V
FOR
DDR

CN702

23

Vo2Vin

4

Vo2

47uF/16V

2
4

47uF/16V

pin66

+3.3AVDD

+

C717

C730

C754

0.1uF

+3.3DV2

C762

+3.3DVDD

+

+3.3DV1

C755

0.1uF

+3.3DV2 5

0.1uF

C719

0.1uF

FB705 NC
C732

0.1uF

+3.3DV1 5

VCPU

+3.3AVDD for
AVDD_DVI

+3.3AVDD

+3.3AVDD for
AVDD_PLL

+3.3AVDD for
AVDDA

3.3V(6251) for
AVDD_PLL2

+3.3AVDD

L710 120 OHM

+3.3V for
VDD_MPLL

+3.3AVDD

120 OHM

+3.3AVDD

10uF/50V

L713

10uF/50V

L702

120 OHM

C722

10uF/50V

+3.3AVDD

L704 120 OHM

120 OHM
C749

10uF/50V

AVDDPLL2

C758

C765

L706

AVDD_DVI

+

C733

10uF/50V

+

+

AVDD_PLL

+

PLL_GND

PLL_GND

pin4,pin10

C723

0.1uF

+

PLL_GND

C750

0.1uF

pin109

AVDDPLL2 5

C759

0.1uF

VDD_MPLL

C769

0.1uF

AVDD_DVI 5

C724

0.1uF

AVDDA

AVDD_PLL 5

pin12

C734

0.1uF

pin17,pin34

C751

0.1uF

pin204

VDD_MPLL 5

AVDDA 5

+3.3DVDD

Audio PLL

1.8V

+1.8V_VDD

L708 120 OHM

pin49

L715

Change to AZ1084-18

120 OHM

TO263

U703

3

2

Vout

Vin

4

Vout

+APLL

+

C756

10uF/50V

PLL_GND

L709 120 OHM

1.8V for
VDDC

+1.8V_VDD

C757

0.1uF

GND

1

AP1084D18

+APLL 5

L705

120 OHM

10uF/50V

C728

0.1uF

PLL_GND

+1.8V_VDD

+

C725
47uF/16V

pin63,pin79,pin131,
pin156,pin173,pin185,pin195

C735

C763
47uF/25V

+

VCC5V+

C729

0.1uF

C736

0.1uF

+

C766

0.1uF

C738

C737

0.1uF

0.1uF

Change to
TO-252

U706

Vo2Vin
Vo2

ADJ

47uF/25V

AIC1084-33PE

1

C739

0.1uF

23
4

C764

6
5
4
3
2
1

CONN

C741

C740

0.1uF

0.1uF

+

C767

0.1uF

C716

22uF/16V

VCC5V+

R715

1K 1/16W

+

C726

0.1uF

+2.5V_DMC 6

+2.5V_DMQ 6

C714

0.1uF/16V

VCC5V

Q704

CE

PMBS3904

U704

3 2

VI VO

+2.5MVDD

+2.5MVDD

C743

0.1uF

Title

Size Document Number Rev

Date: Sheet

VCC5V

R711
10K 1/16W

CE

C715

B

0.1uF

R714

1K 1/16W

B

BE

VO

GND

1

C

C

Q703
PMBS3904

C

BE

R716

AdjBACKLITE 5

1K 1/16W

+2.5VM

4

+

C721

C727

0.1uF

47uF/25V

pin86, pin102,pin113
,pin125,pin139,pin154

+2.5MVDD 5

C745

C744

0.1uF

C746

0.1uF

0.1uF

715G1765-1 for AL2051W (acer)

POWER

R713 4.7K 1/16W

+2.5MVDD

L703

120 OHM

C747

0.1uF

onBACKLITE 7

C748

0.1uF

38Tuesday, January 03, 2006

1

of

47

D102

D101

TZMC5V6-GS08

TZMC5V6-GS08

CN102

RGB GND

HSYNC
VSYNC

SYNC GND

DDC SCL
DDC SDA

1/3shield
2/4shield
0/5shield

clk shield

DAT0+
DAT0­DAT1+
DAT1­DAT2+
DAT2­DAT3+
DAT3­DAT4+
DAT4­DAT5+
DAT5-

31

32

JACK

31

32

11
12
13
14
15

17

CN101

HSI

VSI

D107
TZMC5V6-GS08

25

R

26

G

27

B

29
28
8
15
6
7
14

+5V

16

HPD

11
3
19
22

18
17
10
9
2
1
13
12
5
4
21
20
23

clk+

24

clk-

16

DB15

1
6
2
7
3
8
4
9
5
10

CLK_DDC2
DAT_DDC2

PC5V

VGA_CON

FB104 150 OHM

D108
TZMC5V6-GS08

R128
NC

3

D117
BAV99

RXD 7
TXD 7

3

D103
BAV99

C111

2

0.1uF

R114 100 1/16W

VCC5V

3

C112

2

1

0.1uF

R123
10K 1/16W

R124 100 1/16W

D113
LL5232B 5.6V 5%

3

D118
BAV99

3

D104
BAV99

1

D114
LL5232B 5.6V 5%

D119
BAV99

FB101 0 1/16W
FB102 0 1/16W
FB103 0 1/16W

3

D105
BAV99

C113

1

2

0.1uF

R116

2.2K 1/16W

ST_DET2 7

R125 100 1/16W
R126 100 1/16W

D115
LL5232B 5.6V 5%

3

D120
BAV99

75 1/16W

VCC5V

3

D121
BAV99

R101

C114
33pF

D110
TZMC5V6-GS08

C101

R106

NC

R117
10K 1/16W

D116
LL5232B 5.6V 5%

3

D122
BAV99

C106
NC

75 1/16W

DVI5V

3

D123
BAV99

C107

R107

NC

75 1/16W

C115
220pF

CLK_DDC
DAT_DDC

D111
TZMC5V6-GS08

R127

10K 1/16W

C117

0.1uF

R102 100 1/16W
R103 100 1/16W
R104 100 1/16W
R105 470 1/16W

R108 100 1/16W
R109 100 1/16W
R110 100 1/16W

VCC5V

R111
10K 1/16W

R112 100 1/16W
R113 1K 1/16W

R115 1K 1/16W

D109
TZMC5V6-GS08

3

D124
BAV99

C102 0.047uF
C103 0.047uF
C104 0.047uF
C105 0.001uF

C108 0.047uF
C109 0.047uF
C110 0.047uF

R132 10 1/16W
R133 10 1/16W
R134 10 1/16W
R135 10 1/16W
R136 10 1/16W
R137 10 1/16W

R139 10 1/16W
R140 10 1/16W

RIN 5
GIN 5
BIN 5
SOG 5

GNDR 5
GNDG 5
GNDB 5

ST_DET1 7
HSYNC 5

VSYNC 5

R121 100 1/16W
R122 100 1/16W

DDC_DAT7
DDC_CLK7

B+ 5
B- 5
G+ 5
G- 5
R+ 5
R- 5

CLK+ 5
CLK- 5

R118

10K 1/16W

R119
10K 1/16W

10K 1/16W

R129

R120

4.7K 1/16W

R130
10K 1/16W

R131 4.7K 1/16W

R138

NC

VCC5V

2

VCC5V

PC5V

1

D106
BAV70

3

U101

8
7
6

DVI5V

1

2

3

VCC
WP
SCL

M24C02WMN6

D112
BAV70

U102

8

VCC

7

WP

6

SCL

M24C02WMN6

DDC_WP 7

A0
A1
A2

GNDSDA

GNDSDA

C116

1

0.1uF

2
3
45

C118

1

A0
A1
A2

0.1uF

2
3
45

1

48

C126

1

2

0.1uF

Title

Size Document Number Rev

B

Date: Sheet

715G1765-1 for AL2051W(acer)

INPUT

48Tuesday, January 03, 2006

of

1

VCC5V

C119

2

0.1uF

C120

1

2

0.1uF

C121

2

1

0.1uF

C122

2

1

0.1uF

C123

1

2

0.1uF

C124

2

1

0.1uF

C125

1

2

0.1uF

MCU INTERFACE

INT7

HWRESET7

ALE7
RD7
WR7

AD07
AD17
AD27
AD37

DVI INPUT

VGA INPUT

HWRESET
INT
ALE
RD
WR

AD0
AD1
AD2
AD3

AVDD_DVI

390 1/16W

HWRESET

10K 1/16W

CONNECTOR for PANEL

CN407

2

1

4

3

CONN

(5mm)

TXA0+

5

TXA1+

7

TXA2+

9

TXAC+

11

TXA3+

13

TXB0+

15

TXB1+

17

TXB2+

19

TXBC+

21

TXB3+

23
25
27
29

C425

0.1uF
360 1/10W

FSDATAU[0..31] 6

GND

GND

R465

R447

R445

R446

R466

360 1/10W

360 1/10W

360 1/10W

360 1/10W

TXA0-

6

GND

TXA1-

8

TXA2-

10

TXAC-

12

TXA3-

14

TXB0-

16

TXB1-

18

TXB2-

20

TXBC-

22

TXB3-

24
26
28
30

GND

120 OHM

+

L404

C424

22uF/50V

FSDATAU[0..31]

FSDQM1 6

FSDQSU3 6
FSADDR[0..11] 6

/FSWE 6
/FSCAS 6
/FSRAS 6

FSCLK+, FSCLK- should be routed
like a differentail pair

+2.5MVDD

125

113

VDDM

VDDM

GND

GND

159

163

VDDM

GND

AVDD_PLL

AVDDPLL2

+APLL

49

154

139

VDDM

VDDM

GND

GND

GND

GND

GND

GND

205

184

172

206

194

PLL_GND

AVDDPLL2 3

VDDC

131

17317195

109

156

185

63

79

VDDC

VDDC

VDDC

AVDD_PLL

AVDD_PLL2

AVDD_APLL

MVref

VDDC

MVref

VDDC

VDDC

VDDC

199

197

198

NC

+2.5MVDD

For AOC LCD I/F­F/W default set Odd/Even Swap.
4/13/93

VDDC 3

188

189

190

191

192

193

196

NCNCNCNCNCNCNCNCNC

LVB0M

LVB0P

LVB1M

LVB1P

LVB2M

LVB2P
LVBCKM
LVBCKP

LVB3M

LVB3P

LVA0M

LVA0P

LVA1M

LVA1P

LVA2M

LVA2P
LVACKM
LVACKP

LVA3M

LVA3P

DQS[0]
MDATA[0]
MDATA[1]
MDATA[2]
MDATA[3]
MDATA[4]
MDATA[5]
MDATA[6]
MDATA[7]
MDATA[8]
MDATA[9]

MDATA[10]
MDATA[11]
MDATA[12]
MDATA[13]
MDATA[14]
MDATA[15]

DQS[1]

DQM[0]

DQM[1]

DQS[2]

MDATA[16]
MDATA[17]
MDATA[18]
MDATA[19]
MDATA[20]
MDATA[21]
MDATA[22]
MDATA[23]
MDATA[24]
MDATA[25]
MDATA[26]
MDATA[27]
MDATA[28]
MDATA[29]
MDATA[30]
MDATA[31]

DQS[3]
MADR[11]
MADR[10]

MADR[9]
MADR[8]
MADR[7]
MADR[6]
MADR[5]
MADR[4]
MADR[3]
MADR[2]
MADR[1]
MADR[0]

WEZ
CASZ
RASZ

BADR[0]
BADR[1]

MCLK

MCLKZ
MCLKE
MVREF

R450

1K 1/16W

R451

1K 1/16W

C422

0.1uF

VLCD

VLCD3

TXB0­TXB0+
TXB1­TXB1+
TXB2­TXB2+
TXBC­TXBC+
TXB3­TXB3+

FSDATAU0
FSDATAU1
FSDATAU2
FSDATAU3
FSDATAU4
FSDATAU5
FSDATAU6
FSDATAU7
FSDATAU8
FSDATAU9
FSDATAU10
FSDATAU11
FSDATAU12
FSDATAU13
FSDATAU14

FSDQM0U
FSDQM1U

FSDATAU16
FSDATAU17
FSDATAU18
FSDATAU19
FSDATAU20
FSDATAU21
FSDATAU22
FSDATAU23
FSDATAU24
FSDATAU25
FSDATAU26
FSDATAU27
FSDATAU28
FSDATAU29
FSDATAU30
FSDATAU31

FSBKSEL0
FSBKSEL1

FSCKE

MVref

C423

0.001uF

TXA0­TXA0+
TXA1­TXA1+
TXA2­TXA2+
TXAC­TXAC+
TXA3­TXA3+

FSDQSU0 6

FSDATAU15

R448 33 1/16W
R449 33 1/16W

FSADDR11
FSADDR10
FSADDR9
FSADDR8
FSADDR7
FSADDR6
FSADDR5
FSADDR4
FSADDR3
FSADDR2
FSADDR1
FSADDR0

/FSWE
/FSCAS

/FSRAS

FSBKSEL0 6
FSBKSEL1 6

FSCLK+
FSCLK-

FSCKE 6

MVref

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)

FSCLK+ 6
FSCLK- 6

FSDQSU1 6
FSDQM0 6

FSDQSU2 6

FSADDR[0..11]

187
186
181
180
179
178
177
176
175
174
171
170
169
168
167
166
165
164
161
160

153
152
151
150
149
148
147
146
145
144
143
142
141
138
137
136
135
134
133
101
100
99
98
97
96
95
94
93
92
91
90
89
88
85
84
83
82
81
130
129
128
127
124
123
122
121
120
119
118
117

116
115
112
111
110

107
106
105
104

+3.3DV1

AVDD_PLL3

+3.3DV1 3

+APLL3

+2.5MVDD3

86

VDDP

102

182

VDDP

VDDM

66

162

VDDP

MST9251A(208Pin)

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

80

65

15764183

132

155

87

108

140

103

114

126

AVDDA

VDD_MPLL

+3.3DV2

AVDD_DVI

+3.3DV23

10

34

204

4

AVDD_DVI

AVDD_DVI

AVDD_ADC

AVDD_ADC

AVDD_MPLL

GND

GND

GND

GND

GND

GND

GND

1

16

351250

7

13

GND

VDD_MPLL3

AVDD_DVI3

AVDDA3

U401

RX2+

R+4
R-4
G+4
G-4
B+4
B-4
CLK+4
CLK-4

R444

GNDB4
BIN4
GNDG4
GIN4
SOG4
GNDR4

RIN4
HSYNC4
VSYNC4

R442 100 1/16W

R443

C421

0.1uF

AdjBACKLITE3
Volume8

C418

22pF

RX2­RX1+
RX1­RX0+
RX0­RXC+

C427 0.1uF

C428

ADJ_PWM

14.318MHz
C41922pF

207

DVI_R+

208

DVI_R-

2

DVI_G+

3

DVI_G-

5

DVI_B+

6

DVI_B-

8

DVI_CK+

9

RXC-

DVI_CK-

11

REXT

14

DDCD_DA

15

DDCD_CK

18

HSYNC1

19

VSYNC1

20

BIN1

21

BIN1M

22

SOGIN1

23

GIN1

24

GIN1M

25

RIN1

26

RIN1M

27

BIN0M

28

BIN0

29

GIN0M

30

GIN0

31

SOGIN0

32

RIN0M

33

RIN0

36

HSYNC0

37

VSYNC0

38

RMID

39

REFP

40

REFM

0.1uF

41

VI_DATA[8]

42

VI_DATA[9]

43

VI_DATA[10]

44

VI_DATA[11]

45

VI_DATA[12]

46

VI_DATA[13]

47

VI_DATA[14]

48

VI_DATA[15]

51

GPIO[5]/VHS

52

GPIO[4]/VCLK2

53

VI_CK

54

VI_DATA[0]

55

VI_DATA[1]

56

VI_DATA[2]

57

VI_DATA[3]

58

VI_DATA[4]

59

VI_DATA[5]

60

VI_DATA[6]

61

VI_DATA[7]

77

GPIO[2]/VVS

67

HWRESET

INT

68

INT

ALE

69

ALE

RD

70

RDZ

WR

71

WRZ

AD0

72

DBUS[0]

AD1

73

DBUS[1]

AD2

74

DBUS[2]

AD3

75

DBUS[3]

200

PWM0

201

PWM1

62

VCTRL

158

BYPASS

C420

76

GPIO[3]/VDE

0.1uF

78

GPIO[1]/FIELD

XTAL

202

XOUT

X401

203

TCLK

XIN

Title

715G1765-1 for AL2051W (acer)

Size Document Number Rev

C

Date: Sheet

Scaler (MST9251A)

58Tuesday, January 03, 2006

1

of

49

+2.5V_DMQ

+

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

+2.5V_DMC

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

FSADDR[0..11]5

FSCLK+

R311

FSCLK-

Place this parallel termination close to
corresponding memory IC Pins

150 1/16W 1%

FSBKSEL05
FSBKSEL15

LAYOUT Joyce request

FSDQSU25
FSDQSU05
FSDQSU35
FSDQSU15

FSDQM15

FSDQM05

R309
10K 1/16W

FSVREF

R310
10K 1/16W

FSVREF

C316

0.1uF

GND

+2.5V_DMQ

GND

Near The DDR-SDRAM IC

FSCLK-5
FSCLK+5

FSCKE5

/FSRAS5
/FSCAS5

/FSWE5

R301 33 1/16W
R302 33 1/16W
R303 33 1/16W
R304 33 1/16W

R305 33 1/16W
R306 33 1/16W

R307 33 1/16W
R308 33 1/16W

Near The
DDR-SDRAM IC
Stub as short as
possible.

+2.5V_DMQ3

FSADDR0
FSADDR1
FSADDR2
FSADDR3
FSADDR4
FSADDR5
FSADDR6
FSADDR7
FSADDR8
FSADDR9
FSADDR10
FSADDR11

FSBKSEL0
FSBKSEL1

FSCLK­FSCLK+
FSCKE

/FSRAS
/FSCAS
/FSWE

FSDQS3
FSDQS1
FSDQS2
FSDQS0

FSDQM11
FSDQM01
FSDQM00
FSDQM10

GND

+2.5V_DMQ

U303

M4

A0

M5

A1

L5

A2

M6

A3

M7

A4

L8

A5

M8

A6

M9

A7

M10

A8/AP

L7

A9

K5

A10

L6

A11

M3

BA0

L4

BA1

L11

CK#

L10

CK

M11

CKE

M1

CS#

L1

RAS#

K1

CAS#

K2

WE#

A1

DQS0

G12

DQS1

G1

DQS2

A12

DQS3

A2

DM0

G11

DM1

G2

DM2

A11

DM3

B3

NC

B10

NC

G3

NC

G10

NC

K8

NC

K11

NC

K12

NC

L2

NC

L3

NC

L9

NC

L12

NC

M2

NC

EM6A9320BI-5M

+2.5V_DMC

+2.5V_DMC3

C6C7D3

VDDQ

VSS

VDDQ

VSS

VSS

VDD

VSS

D10K3K6K7K10

VDD

VDD

VSS

VSS

VDD

VSS

VDD

VSS

VDD

VSS

B2B4B6B7B9

B11D2D11E3E10F3F10H3H10J3J10

VDDQ

VDDQ

VDDQ

VDDQ

VDDQ

VDDQ

VDDQ

VDDQ

VDDQ

VDDQ

VDDQ

VDDQ

VDDQ

VDDQ

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

VSS

D4D6D7D9E5E6E7E8F5F6F7F8G5G6G7G8H5H6H7H8J5J6J7J8K4

GND

FSVREF

M12

VDD

VDD

VSS

VSS

K9

VREF

VSS

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

LAYOUT Joyce request

FSDATA[0..31]

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

GND

2

0

3

1

GND

RN301

FSDATA0
FSDATA1

FSDATA2
FSDATA3

FSDATA4
FSDATA5
FSDATA6
FSDATA7

FSDATA20
FSDATA21
FSDATA22
FSDATA23

8
7
6
5

8
7
6
5

8
7
6
5

8
7
6
5

8
7
6
5

8
7
6
5

8
7
6
5

8
7
6
5

RN302

RN303

RN304

RN305

RN306

RN307

RN308

FSDATA24
FSDATA25
FSDATA26
FSDATA27

FSDATA28
FSDATA29
FSDATA30
FSDATA31

FSDATA8
FSDATA9
FSDATA10
FSDATA11

FSDATA12
FSDATA13
FSDATA14
FSDATA15

FSDATA16
FSDATA17
FSDATA18
FSDATA19

Near The DDR-SDRAM IC

33 1/16W

FSDATAU24

1

FSDATAU25

2
3

FSDATAU26
FSDATAU27

4

33 1/16W

FSDATAU28

1

FSDATAU29

2

FSDATAU30

3

FSDATAU31

4

33 1/16W

FSDATAU8

1

FSDATAU9

2

FSDATAU10

3

FSDATAU11

4

33 1/16W

1

FSDATAU12

2

FSDATAU13
FSDATAU14

3
4

FSDATAU15

33 1/16W

FSDATAU0

1

FSDATAU1

2

FSDATAU2

3

FSDATAU3

4

33 1/16W

FSDATAU4

1

FSDATAU5

2

FSDATAU6

3

FSDATAU7

4

33 1/16W

FSDATAU16

1

FSDATAU17

2

FSDATAU18

3

FSDATAU19

4

33 1/16W

FSDATAU20

1

FSDATAU21

2
3

FSDATAU22

4

FSDATAU23

Title

Size Document Number Rev

B

Date: Sheet

FSDATAU0
FSDATAU1
FSDATAU2
FSDATAU3
FSDATAU4
FSDATAU5
FSDATAU6
FSDATAU7

FSDATAU8
FSDATAU9
FSDATAU10
FSDATAU11
FSDATAU12
FSDATAU13
FSDATAU14
FSDATAU15

FSDATAU16
FSDATAU17
FSDATAU18
FSDATAU19
FSDATAU20
FSDATAU21
FSDATAU22
FSDATAU23

FSDATAU24
FSDATAU25
FSDATAU26
FSDATAU27
FSDATAU28
FSDATAU29
FSDATAU30
FSDATAU31

715G1765-1 for AL2051W (acer)

Frame Memory

FSDATAU[0..31] 5

of

68Tuesday, January 03, 2006

1

50

VCPU

Reset
Circuit

AUDIO_SD8
AUDIO_MU8

U404 MAX810STR

23

RSTVCC

GND

1

C435

0.22uF

U403

1

A0

VCC

2

A1
A2
GND SDA

WP

SCL

3
4 5

AT24C16N-10SC-2.7

VCPU3

LL4148-GS08

VCPU

8
7
6

R421 NC

C437

0.1uF

D401

C438

0.1uF

C433

+

10uF/16V

R411
10K 1/16W

R413 10K 1/16W
R416 10K 1/16W

R409 10K 1/16W
R418

100 1/16W
R423 10K 1/16W

R425 10K 1/16W
R426 10K 1/16W

R429 10K 1/16W

ST_DET14
ST_DET24

HWRESET5

onPANEL_5V/3.3V3

onBACKLITE3

VCPU

INT5

WP

Standby
Mute

ALE5

R458 10K 1/16W
R459 10K 1/16W
R460 10K 1/16W
R461 10K 1/16W

R462 10K 1/16W
R463 10K 1/16W

C432 22pF

X402

20MHz

C434 22pF

R414 100 1/16W
R417 100 1/16W

VCPU

R464

C431

0.1uF

10K 1/16W

U402

35

EA/VP

21

X1

20

X2

10

RESET

14

INT0/P3.2

15

INT1/P3.3

16

T0/P3.4

17

T1/P3.5

36

P0.7

37

P0.6

38

P0.5

39

P0.4

40

P0.3

41

P0.2

42

P0.1

43

P0.0

1

P4.2

12

P4.3/ISP

MTV416/W79E632

GND VCC

22 44

For Hardware
ISP

ISP_ON

R718 10K 1/16W

P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7

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

RP401

10K 1/16W

2
3
4
5
6
7
8
9

24
25
26
27
28
29
30
31

19
18
32
33
13
11

23
34

RIGHT

R45310K 1/16W

R45410K 1/16W

R45210K 1/16W

876

5

123

4

WP

LED_O
LED_B

R45510K 1/16W

876

5

RP402

10K 1/16W

4

123

POWER
ENTER
RIGHT
LEFT
AUTO

R457 10K 1/16W
R456 10K 1/16W

R419 100 1/16W
R420 100 1/16W
R422 NC
R424 NC

VCPU

AD0 5
AD1 5
AD2 5
AD3 5

RD 5
WR 5

onPOWER 3

DDC_DAT 4
DDC_CLK 4
TXD 4
RXD 4

R440
22K 1/16W

10K 1/16W

R441

B

C445

0.1uF/16V

CE

Q403

PMBS3904

DDC_WP 4

VCPU

R433
120 1/16W

R437

LED_B Q401

4.7K 1/16W

VCPU

B

PMBS3906

LED_GRN

C E

3

D402
BAV99

2

C451
1000pF

VCPU

R434

Q402

2

C452

1000pF

120 1/16W

C E

3

D403
BAV99

1

B

R438

4.7K 1/16W

LED_O

PMBS3906

LED_ORANGE

1

2

DP1

DUAL LED

3

1

ENTER
RIGHT
AUTO
LEFT
POWER

R430 470 1/16W
R431 470 1/16W
R432 470 1/16W
R435 470 1/16W
R436 470 1/16W

2

3

D404

C443

0.001uF

BAV99

1

2

3

C442

0.001uF

D405
BAV99

1

2

3

C441

0.001uF

D406
BAV99

1

2

3

C440

0.001uF

D407
BAV99

1

2

3

C439

0.001uF

D408
BAV99

1

KEY_MENU
KEY_RIGHT
KEY_AUTO
KEY_LEFT
KEY_ONOFF

VCPU

SW401

LCD ONOFF

Title

Size Document Number Rev

B

Date: Sheet

SW402
KEY LEFT

SW403
KEY AUTO

715G1765-1 for AL2051W (acer)

MCU

SW404

KEY RIGHT

SW405
KEY MENU

1

78Tuesday, January 03, 2006

of

51

CN602

PHONEJACK

VCC12V_AUDIO

VCC12V_AUDIO3

R603
1K 1/16W

C603

0.1uF

C605 220uF/16V
C607 220uF/16V

R604
1K 1/16W

+

+

OUT_L
OUT_R

+

C601

220uF/16V

U601

15

GND

VS

OUTR

GND

OUTL

SVR

GND

TDA7496L

17
14
10
7
5

8

16

VS

4
3
2
1
5

R601 18K 1/16W
R602
18K 1/16W

C611
100pF

20K 1/16W

R605

20K 1/16W

AUDIO_SD7
AUDIO_MU7

R606

C612

100pF

C604 0.47uF/16V
C606 0.47uF/16V

C609

+

1uF

C610

4
9

6
11
12

+

1uF

INL
INR
VOLUME
STBY
MUTE

GND

123

NC

GND

GND

13

VAROUT_R

VAROUT_L

GND

181920

+

C602

220uF/16V

+

C608

220uF/16V

CN603

EAR PHONEJACK

1
5
4

R608 75 1/16W

3
2

R609 75 1/16W

7
8

R607

220K 1/16W

C613

0.1uF

CN601

1

OUT_R
OUT_L

2
3
4

SPEAKER CONN

Volume 5

Title

715G1765-1 for AL2051W (acer)

Size Document Number Rev

A4

Date: Sheet

52

AUDIO

88Tuesday, January 03, 2006

of

1

Power/Inverter board

53

0.1uF/0805

32

1

Q807
NC

C842

1uF/0805 NC

L805
200uH

C847

L806

200uH

0.1uF/0805

Q806
NC

3 2

1

R867
0 OHM

D821

4148

JP801

C814

C848

0.1uF/0805
Q802

DTA144WKA

Q804

32

DTC144WKA

1

C816

0.22uF/0805

C818

1.0uF/0805

C819

1uF/0805

R819 NC

R822 9.1k 0805

C822

C825
1uF/0805

0.0068uF/25V

R826 39K 0805

R831

39K NC

Q810

1

PMBS3906 NC

3 2

R840

NC

12

is signal GND

1

ZD803

5.6V

2.2uF/1206

R801

2.4K 0805

3 2

R818

0 0805

CN805

VIN
VIN

ON/OFF

DIM
GND
GND

33L8009-6N-H

R820
NC

R825
NC

82K 1/4W

R839

is power GND

1
2
3
4
5
6

AOC (Top Victory) Electronics Co., Ltd.

Title

INPC2062AUA1P

Size Document Number Rev

Custom

Date: Sheet

Tuesday, January 03, 2006

23

of

D810
BAV99

R830

0 0805

2

D820
BAV99

R852

430 1% 0805

CN801

1
2
3
4
5

CONN 33G8020-5D-U

CN802

1
2

33G8021 2D U

1

4

L802

L

2

3

R856 0 0805

3

1

CONN 33G8020-5D-U

1

4

L804

L

R853 0 0805

2

3

3

1

R809

120K 1/8W

R816

2M 0805

CN803

1
2
3
4
5

CN804

1
2

33G8021 2D U

120K 1/8W

2M 0805

R861
1K 0805

R866
1K 0805

R843

R848

C808

10pF/3KV

C810

0.022uF/0805 X7R

R814

R823

620K 0805

C835

10pF/3KV

C840

R847

2M 0805

620K 0805

C801 33pF/3KV

C802 33pF/3KV

C804 33pF/3KV

N.C

N.C

R850

3

C811

D803
BAV99

1

D805

1N4148

D807 N.C

D808 1N4148

C827

470pF

C830 33pF/3KV

C834 33pF/3KV

C836 33pF/3KV

3

C841

D812
BAV99

1

D815

1N4148

D817 N.C
D818 1N4148

C845

470pF

2

Q808
RK7002

2

2M 0805

120K 1/8W

Q813
RK7002

R860

0 0805

R807

2

R812

1

R859

0 0805

R841

2M 0805

R846

120K 1/8W

R862
1K 0805

3

4

R865
1K 0805

2

1

R863
1K 0805

L801

L

R811 N.C

は　

D809

4148

R829

15K 0805

3

L803

L

R844 N.C

4

R851

15K 0805

R855 N.C

layout

R854 N.C

D819

4148

R857

R808

2M 0805

0 0805

R817

120K 1/8W

2

R864
1K 0805

R858

430 1% 0805

R842
2M 0805

R849

120K 1/8W

D801

C843

C803

1
2
3
4 5

1
2
3
4 5

Q805 FSI4502

1
2
3
4 5

SB240

D814

1
2
3
4 5

SB240

FSI4502

S1N
G1N
S2P
G2P D2P

S1N
G1N
S2P
G2P D2P

D811

Q811

AM4502

S1N
G1N
S2P
G2P D2P

S1N
G1N
S2P
G2P D2P

Q812
FSI4502

Q801

C806

4.7uF/1206 X5R

8

D1N

7

D1N

6

D2P

4.7uF/1206 X5R

C809

D802SB240
D804SB240

8

D1N

7

D1N

6

D2P

D806SB240

4.7uF/1206 X5R

SB240

8

D1N

7

D1N

6

D2P

D813SB240

8

D1N

7

D1N

6

D2P

D816SB240

C807

4.7uF/1206 X5R

C831

C833

4.7uF/1206 X5R

C838

4.7uF/1206 X5R

6 7

2 1

PT801
80LL17T-16

6 7

2 1

PT802
80LL17T-16

2M 0805

C823

220pF

0.022uF/0805 X7R

C844

220pF

470uF/25V

+

R815

10 1206

C829

R833 130K

2

C815
1uF/0805

1
2
3
4
5
6
7

9

10

1

CTIMR
OVP
ENA
SST
VDDA
GNDA
REF

FB
CMP

Q809

IC801

RK7002

R802
470 1206

32

Q803
PMBS3904

10K 0805

C813
1uF/25V

R828
NC

R806

NDRV_B
PDRV_A

PWRGND

OZ1060

PDRV_C
NDRV_D

R813
22 0805

C817

N.C

C820

C821

NC

1M 0805

R835

C824

C826

NC

R827
22 0805

R832
NC

R834 51K 0805

0.047uF/0805

C839

0.01uF/0805

20
19
18

CT

220PF/0805

17

RT

16
15

LCT

14

DIM

138

LPWMRT1

12
11

R821

30K 0805

C846N.C

C828

0.047uF/0805

R836

N.C

ZD801

5.6V
10K 0805

R824 1M/ 0805 NC

C805

R804

R803

10K 085

R805
22 0805

ZD802

5.6V

R810
22 0805

R845

22 0805

104/0805

C812
104/0805

104/0805

R838
22 0805

104/0805

+

C832
470uF/25V

C837

54