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Acer AL1721h Service Guide

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

Copyright
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 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.

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.
1

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.

2

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, 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.

3

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 shock 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.

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, use 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 adapter to ground 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. 3.5A. The wall socket shall be installed near the equipment and shall be easily accessible. For use only with the attached power adapter (output 12V DC)which have UL,CSA listed license

5

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 off 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 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.

6

Table Of Contents
Chapter 1 Monitor Features Monitor Features Electrical Requirements LCD Monitor General Specification LCD Panel Specification Support Timing Factory Preset Timing Table Block Diagram Main board Diagram Software Flowchart Main board Layout Front Bezel Rear Bezel Operating Instructions External Controls Front Panel Controls OSD Menu Hot-Key Menu OSD Message LOGO Machine Disassembly Troubleshooting Connector Information FRU (Field Replacement Unit) List Exploded Diagram Schematic Diagram Analog and Digital Input GM5120/GM2120 LVD-S Key Board Connector Audio DC Power Online Support Information .................................................... ................................................... ................................................... ................................................... ................................................... ................................................... ................................................... ................................................... ................................................... ................................................... ................................................... ................................................... ................................................... .................................................... ................................................... ................................................... ................................................... ................................................... ................................................... ................................................... .................................................... .................................................... .................................................... .................................................... ................................................... .................................................... ................................................... ................................................... ................................................... ................................................... ................................................... .................................................... 8 8 10 11 12 14 14 15 16 17 18 23 24 25 25 25 27 30 30 31 32 34 40 41 41 44 44 45 46 47 48 49 50

Chapter 2

Chapter 3 Chapter 4 Chapter 5 Chapter 6

Chapter 7

Appendix

7

Chapter 1
Monitor Features
AU Driving system LCD Panel Size Pixel pitch Brightness Contrast Viewable angle TFT Color LCD 43.2cm(17.0") 0.264mm( H )x 0.264mm( V ) 260cd/m2 (Typical) 450:1(Typical) 140° (H) 140° (V) SAMSUNG(Option) TFT Color LCD 43.2cm(17.0") 0.264mm( H )x 0.264mm( V ) 250cd/m2 (Typical) 350:1(Typical) 140° (H) 120° (V) 25 ms(Tr+Tf)Tr=5ms/Tf=20ms

Response time 16ms(Tr+Tf ),Tr=4ms,Tf=12ms R,G,B Analog Interface Video Digital Input Separate Sync. H/V TTL H-Frequency 30KHz 80KHz V-Frequency 55-75Hz 16.2M Colors 165MHz 1280 x 1024 @75Hz VESA DDC1/2BTM ON Mode OFF Mode 45W 3W D-Sub 15pin DVI-D 24pin Analog:0.7Vp-p(standard), 75 OHM, Positive Digital:DVI-D Horizontal : 337.92mm Vertical : 270.34mm 100~264VAC,47~63HZ

Digital H/V TTL 30KHz 80KHz 55-75Hz 16.2M Colors 165MHz 1280 x 1024 @75Hz VESA DDC1/2BTM 45W 3W

Display Colors Dot Clock Max. Resolution Plug & Play EPA STAR® ENERGY

Input Connector

Input Video Signal

Analog:0.7Vp-p(standard), 75 OHM, Positive Digital:DVI-D Horizontal : 337.92mm

Maximum Size Power Source Environmental Considerations Dimensions Weight (N. W.)

Screen

Vertical : 270.34mm 100~264VAC,47~63HZ

Operating Temp: 5° to 50°C Operating Temp: 5° to 50°C Storage Temp.: -20° to 65°C Storage Temp.: -20° to 65°C Operating Humidity: 10% to 85% Operating Humidity: 10% to 85% 430(W)×445(H)×152(D)mm 5.0kg Unit (net)
8

· Auto Adjust Key

· Auto Adjust Key · · · · · · · · · · · · · · · · · · · ·

Switch

External Controls:

Functions

· · · · · · · · · · · · · · · · · · · ·

/ Volume Power Button MENU/ Exit Contrast Brightness Focus Clock H.Position V.Position Input Selected Language Dos-mode resolution selected (Warm) Color (Cool)Color RGB Color temperature Reset OSD timeout information Exit

/ Volume Power Button MENU/ Exit Contrast Brightness Focus Clock H.Position V.Position Input Selected Language Dos-mode resolution selected (Warm) Color (Cool)Color RGB Color temperature Reset OSD timeout information Exit

Power Consumption ( Maximum ) 45 Watts Audio Output Regulatory Compliance Rated Power 1W rms (Per channel) CSA, TÜV/GS, CE, TCO'99, UL

45 Watts Rated Power 1W rms (Per channel) CSA, TÜV/GS, CE, TCO'99, UL

9

Electrical Requirements
Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. Ambient light : 225 lux Viewing distance : 40 cm in front of LCD panel Warm up time All specifications : 30 minutes Fully functional : 5 seconds Measuring equipment : Chroma 7120 signal generator or equivalent, directly Connected to the monitor under test. Control settings User brightness control : Maximum (unless otherwise specified ) User contrast control: Typical (unless otherwise specified ) User red/white balance, Green/white balance and Blue/white balance control : In the center (unless otherwise specified ) Power input: 90Vac or 240Vac Ambient temperature: 20 ± 5 °C Analog input mode: 1280 x1024 /75 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

10

LCD Monitor General Specification
Panel type: 17 " active matrix color TFT LCD 1). AU EN05 Display size: 337.92mm (H) × 270.34mm(V) Display mode: VGA 640 × 480 (60//72/75 Hz) SVGA 800 × 600 (56/60/72/75 Hz) XGA 1024 × 768 (60/70/75 Hz) SXGA 1280 × 1024 (60//75 Hz) standard resolution Pixel pitch: 0.264mm(H) × 0.264mm(V) Display dot: 1280 x (RGB) × 1024 Pixel clock: 25.2 135.0MHz Contrast ratio: = 0° AU EN05 450:1 Brightness: AU EN05 260 cd/ Response time (Tr/Tf): AU EN05(16ms) Display color: 16.2M(6 bit color+FRC) Viewing angle: AU EN05 L / R 80/ 80 ( 160 degrees horizontal typical) U / D 70 / 70 ( 140 degrees vertical typical) Luminance uniformity: > 80 % (typical) Pc interface: 1).Video: RGB analog 0.7V peak to peak Sync: TTL positive or negative Signal connector: 15 pin Mini D type, (standard VGA video) 3.5 mm stereo audio jack (Audio) (For AR577 only) Audio power: 1.5Wrms + 0.5Wrms (300Hz 1.3kHz) Front control: power on/off with LED select adjustment Interface frequency Horizontal Frequency 30KHz --80KHz Vertical Frequency 55Hz ------75Hz Plug & play: Support VESA DDC2B functions Power Input voltage: Single phase, 50/60HZ, 100 VAC to 240VAC ±10% Total output power: 50 Watt max.

LCD Panel Specification
LCD Panel Model (Hydis LT17E12-200) Display Type active matrix color TFT LCD Resolution 1280x1024 pixels Display Dot 1280x (RGB) x 1024 Display Area 337.92mm(H) x 270.34mm(V) Pixel Pitch 0.264mm(H) x 0.264mm(V) Display Color 16M (6 bite color+FRC)
11

Lamp Voltage 700 Vrms (typ) Lamp Current 6.5 mArms (typ) Weight 2000g (typ) Optical Specifications IL = 7.0mA Ta = 25 ± 2°C VDD = 5V FV = 60Hz
ITEM Contrast Ratio (Center of screen) Response Time at Ta Rising Falling Symbol CR TR=4 TF=12 YL RX RY GX GY BX BY WX WY L R H L BUNI F CT CR10 =0, =0 Normal Viewing Angle Condition MIN. 250 200 0.61 0.31 0.26 0.58 0.11 0.04 0.28 0.30 -

FDCLK = 54MHz
TYP. 450 16 260 0.64 0.34 0.29 0.61 0.14 0.07 0.31 0.33 80 80 70 70 75 MAX. 0.67 0.37 0.32 0.64 0.17 0.10 0.34 0.36 80 5 2 % % % Degrees (total) msec cd/mm UNIT

Luminance of white (Center of screen) Red Color Chromaticity (CIE) Green Blue White Hori. Vert.

Viewing Angle

Brightness Uniformity Flicker Cross talk

12

Panel Relative Humidity

Input Signals Video input Type Input Impedance Polarity Positive Amplitude Display Color Sync input Signal

Analog R, G, B. 75 ohm +/- 2% 0 - 0.7 +/- 0.05 Vp same as LCD panel separate horizontal and vertical sync, or composite sync which are TTL compatible positive and negative.

Polarity Interface frequency The following frequency range is generalized by supported timing. If the entered mode does not match the supported timing the display optimization will not be assured. Horizontal Frequency 30KHz --80KHz Vertical Frequency 55Hz -------75Hz Panel bright dot defect and dark dot defect Test conditions: 1280*1024,64KHz/60Hz R.G.B.Full White and Full Black Pattern RECALL 1. 2. 3. 4. Bright Dots: R.G or B dots 3dots (G dots <3dots) Adjacent dot<1 groupTotal bright dots 3dots Dark Dots: -R.G or B dots 5dots - 2 adjacent dot<2 group Total dark dots 5dots Total(Dark & Bright) 7dots
13

Supported Timing
FH(KHZ)/ FV(HZ) 37.9/70 31.5/59.9 37.9/72.8 37.5/75 35.2/56.3 800x600 SVGA 1024x768 XGA 37.9/60.3 48.1/72.2 46.9/75 48.4/60.0 56.5/70.1 60/75 1280x1024 63.98/60.02 SYNC TOTAL ACTIVE POLARITY (DOT/LINE) (DOT/LINE) SYNC FRONT BACK WIDTH PORCH PORCH (DOT/LINE) (DOT/LINE) (DOT/LINE) 64 96 40 64 72 128 120 80 136 136 96 112 144 32 8 16 16 24 40 56 16 24 24 16 48 16 96 40 120 120 128 88 64 160 160 144 176 248 248 PIXEL FOREQ. (MHZ) 25.175 25.175 31.5 31.5 36.0 40.0 50.0 49.0 60.0 70.0 75.0 108 135

TIMING 640x350 /DOS 640x480 VGA

+
-

800 800 800 840 1024 1056 1040 1056 1344 1328 1312 1688 1688

449 525 520 500 625 628 666 625 806 806 800 1066 1066

+ + +
+ -

SXGA

79.98/75.03

+ + +

Factory Preset Timing Table
STANDARD RESOLUTION 720 x 400 640 × 480 VGA 640 × 480 640 × 480 640 × 480 800 × 600 800 × 600 SVGA 800 × 600 800 × 600 832 x 624 1024 × 768 XGA 1024 × 768 1024 x 768 1024 × 768 HORIZONTAL FREQUENCY (kHz) 31.47 31.47 35.00 37.50 37.861 35.156 37.879 48.077 46.875 49.725 48.363 56.476 60.24 60.02
14

VERTICAL FREQUENCY (Hz) 70.0 60.0 66.6 75.0 72.8 56.3 60.0 72.2 75.0 75.0 60.0 70.0 74.9 75.0

Note: the IBM modes and Mac modes not in table, please refer to the spec!

Monitor Block Diagram
The LCD MONITOR will contain an main board, an inverter/power board, keypad board and internal adapter which house the flat panel control logic, brightness control logic and DDC. The Inverter board will drive the backlight of panel and the DC-DC conversion. The Adapter will provides the 12V DC-power to inverter/power board.

POWER(90V-264)

Monitor Block Diagram

Adapter (12V)

IDPC

LAMP

Analog in

Audio IC

DC-DC LCD Controller -Scaler -OSD -ADC LCD PANEL

Digital in

Flash rom

SPEAKER

KEY BOARD

SPEAKER

15

MAIN BOARD DIAGRAM
VCC3.3V AT24C02 (DDC)U104 DDC SCL/SDA VGA R/G/B VGA Input VGA Hsync/Vsync RXD/TXD AT24C02 (DDC)U102 U203 GM5120 PA 0~9 PB 0~9 VCC2.5V VAA2 VAA4

VAA1

VAA3

HS/VS

Panel

U601 Winbond

DVI Signal VLCD

EPR SDA/SCL RGB AT24C16 U602 KEY Control

16

Software Flow Chart
MCU initialize Y Is the eeprom blank ? N Get the PWM value of brightness from eeprom. Program the eeprom by default values.

N Is the power key pressed ? Y Clear all global flags.

Are the AUTO and SELECT keys pressed ? Y Save the power key status into eeprom.Turn on the LED and set it to green color.Scaler initialize. N In standby mode ? Y N Check the analog port, are there any signals coming ? Y Wake up the scalar. ?

N Enter factory mode.

Update the life time of back light. N

Does the scalar send out a interrupt request ? Y Are there any signals coming from analog port ? Y N

Display "No connection Check Signal Cable" message. And go into standby mode after the message disappear.

Program the scalar to be able to show the coming mode.

Process the OSD display.

N Read the keyboard. Is the power key pressed ? Y
17

Monitor Board Layout

18

Label U1 U102 U104 U106 U201 U202 U203 U204 U301 U302 U501 U502 U503 CN101 CN102 CN301 CN402 CN403 X201 M2

Component TDA7496L BY ST M24C02-WMN6T SMT M24C02-WMN6T SMT 74LCX14MX S014 FAIRCHIL TL1451ACD A290011TL-70 SCALER IC gm5120(V:BD) M24C16-MN6T THC63LVDM83R THC63LVDM83R AIC1117-33CY AIC1117-33CY RT9164-25CL DVID CONN. 24P FEMALE D-USB 15PIN PIN HEADER 24P 2.0mm PIN HEADER FEMALE 2*6 WAFER 14P RIGHT ANGLE CRYSTAL 14.318MHzHC-49U PHONE JACK

19

The step between front bezel and back cover shall be within specification. Top and Bottom Back cover & Bezel concavity 0.8mm A 1.3 mm Left and Right Back cover & Bezel concavity 0.8mm A 1.3 mm

Back Cover & Hinge Cover concavity 0mm B 0.5mm

B

Base & Neck concavity 0mm C 0.6mm

Top and Bottom Back cover & Bezel step

Left and Right Back cover & Bezel step
20

0mm D 0.8 mm

0mm D 0.8 mm

LCD Horizontally
The angle between front bezel and LCD unit in bottom side should not large than 1.0mm.

The distance of the LCD display unit from left side to right should not large than 4.0mm.

Tilt Base Rotation Tilt up 15 ± 2°/ down 5 ±2°

21

Plastic Material For TCO99 Front Bezel ABS 94HB Back Cover ABS 94HB The Others ABS 94HB For MPRII Front Bezel ABS 94HB Back Cover ABS 94HB The Others ABS 94HB GAP Spec. Gap between panel with bezel is 0 mm < gap < 1.2 mm

22

Front Bezel

Item 1 2 3 4 5

Description VEDIO UP VEDIO DOWM POWER MENU/ENTER AUTO/EXIT

23

Rear Bezel

Item 1 2 3 4 5 6

Description D-SUB Cable DC-Jack Power Cable AC POWER CORD EXTERNAL ADAPTER DVI CABLE AUDIO CABLE

24

Chapter 2
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.

External

Control

Button

External Controls
1. >/ Volume 2.
Front Panel Control
· Power Button:

Press this button to turn the monitor ON or OFF.
· 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.
·
Activates the volume control when the OSD is OFF or navigate 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 navigate through adjustment icons when OSD is ON or adjust 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).
25

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:

Green -- Orange -- NOTES

Power On mode. Off mode.

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.

1. 2. 3. 4. 5.

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

26

Adjusting The Picture
1.) Main OSD Menu : a. Outline:

I. Analog-Only Model

II. Dual-Input Model, Analog Signal Input

III. Dual-Input Model, Digital Signal Input

27

b. The Description For Control Function :
Main Menu Icon Sub Menu Item Contrast Brightness Focus Clock H. Position V. Position Warm Cool User / Red User / Green User / Blue English Deutsch Français Español Italiano H. Position V. Position OSD Timeout Auto Config N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A Sub Menu Icon Contrast from Digital-register. Backlight Adjustment Description Adjustment Range 0-100 0-100 Recall Cool Contrast Value Recall Cool Brightness Value Do Auto Config Do Auto Config Do Auto Config Do Auto Config The Color Temperature will be set to Cool. The User R/G/B value(default is Green Gain Digital-register. Blue Gain from Digital-register. Set OSD display language to English. Chinese. Set OSD display language to German. Set OSD display language to French. Set OSD display language to Spain. Set OSD display language to Italian. Set OSD display language to Japanese. Adjust the horizontal position of the OSD. Adjust the verticalposition of the OSD. Adjust the OSD timeout. N/A N/A N/A N/A N/A 0-100 0-100 10-120 50 50 10 N/A 0-100 0-100 N/A The Language will be set to English. 100) will not be Modified by Reset function. Reset Value

Adjust Picture Phase to reduce Horizontal-Line 0-100 noise Adjust picture Clock to reduce Vertical-Line 0-100 noise. Adjust the horizontal position of the picture. Adjust the verticalposition of the picture. 0-100 0-100

Recall Warm Color Temperature from EEPROM. N/A Recall Cool Color Temperature from EEPROM. Red Gain from Digital-register. N/A 0-100

Set OSD display language to Tranditional N/A

Set OSD display language to Simplified Chinese. N/A

Auto Adjust the H/V Position, Focus and Clock of N/A picture.

(Analog-Only Model) 28

Analog Digital (Dual-Input Model) Information

N/A N/A

Select input signal from analog (D-Sub) Select input signal from digital (DVI)

N/A N/A

N/A N/A

N/A

Show the resolution, H/V frequency and input port N/A of current iput timing.

N/A

Reset

N/A

Clear each old status of Auto-configuration and N/A set the color temperature to Cool.

N/A

Exit

N/A

Exit OSD

N/A

N/A

29

2.) Hot-Key Menu: a. Outline:

b. The Description For Hot-Key Function :
Item Volume Operation When the OSD is closed, press Left or Right button will be Volume Hot-Key Function Icon Description Volume of Audio adjustment. The Audio will be Mute when volume=0. Adjustment Range 0-100 Reset Value 50

3.) OSD Message: a. Outline:

b. The Description For OSD Message :
Item Auto Config Please Wait config function. 2.) When Digital signal input, without this OSD Message. Input Not Supported When the Hsync Frequency, Vsync Frequency or Resolution is out of the monitor support range, will show this message. This message will be flying. Cable Not Connected 1.) Analog-Only Model : When the video cable is not connected, will show this message. This message will be flying. 2.) Dual-Input Model : Dual-Input Model without this OSD Message. No Signal 1.) Analog-Only Model : When the video cable is connected, but there is no active signal input, will show this message, then enter power saving. 2.) Dual-Input Model : When the video cable is not connected, or the video cable is connected but there is no active signal input, will show this message, then enter power saving. Description 1.) When Analog signal input, if User Press Hot-Key "Auto", will show this message, and the monitor do the auto

30

4.) 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 DDC1/2B Feature This monitor is equipped with VESA DDC1/2B 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, DDC1 and DDC2B. The DDC1 is a unidirectional data channel from the display to the host that continuously transmits EDID information. The DDC2B is a bidirectional data channel based on the I²C 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 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 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, 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.
31

Chapter 3
Machine Disassembly
This chapter contains step-by-step procedures on how to assemble the monitor for maintenance. Disassembly Procedure Disassemble the base 1. Remove the neck cover. 2. Remove the four screws to release the hinge. 3. Remove the base

Disassemble the chassis 1. To stick the insulated film on the mainframe and the shield. 2. Insert the wiring harness 3. Stick the soft cushion EMI 4. To fix the wiring harness with the adhesive plaster 5. To put the bezel on panel 6. To fix the main frame and panel with the screws 7. To connect the main board with inverter board 8. To connect all the interfaces of above board 9. After having fix the board, cover the shield on them 10. To fix the shield on the main frame with screws 11. To put and fix the rear cover 12. To connect the interfaces 13. To cover the panel with front bezel 14. To paste protecting film on the panel

1

2

3

4

5

6

7

8

9

10

11

12

13

14

32

NOTE: 1.The screws for the different components vary in size. During the disassembly process, group the screws with the corresponding components 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
Warning: 1.In order to prevent the static disturbance,wear resisting static ring 2. No watch

33

Chapter 4
Troubleshooting
This chapter provides troubleshooting information for the AL1721h:

Main Board
1.No Screen Appear

Measured U503 pin 2 = 2.5 V? Measured U502 pin 2= 3.3V? Measured U501pin 2 =3.3V?
Yes, all DC level exist

Check Correspondent component. Is there any shortage or cold solder? Check Power Board.

Yes.there have OSD show Connected the Signal cable again, Check LED status.
Led Green

Disconnected the Signal cable( Loose the Signal cable ),Is the screen show "Cable Not
No, nothing is show Led Orange

Check Power switch is in Power-on

Replace U202 Flash Rom
Led orange Check Correspondent

Connected the Signal cable again,
Led Green

status , and check if Power switch had been stuck ? OK, Keyboard no stuck

Check LED status.

Check the Wire-Harness from CN301

Measured RGB (R136,R138,R140) H,V Input at U106 pin 4,10 ,was there have signal ?

NG

component short/open ( Protection Diode ) and Signal cable bad ?

OK,Wire tight enough

Check Panel-Power Circuit
OK,Panel Power OK

OK,input Normal

Check U203 Data-output Block
OK, U203 data OK Replace Power board and Check Inverter control relative circuit

Measured Crystal X201(14.318MHz)

OK,clock normal

Replace U203 (GM5120)

Re-do White balance adjust OK

Note:1.If

Replace "MAIN-BOARD" , Please re-do "DDC-content" "WHITE-Balance". 2. If Replace "Power Board" only, Please re-do " WHITE-Balance".
34

programmed

&

2.Panel-Power Circuit
Check the PPWR panel power relative circuit, Q301, Q302(pin 5,6,7,8) In normal operation, when LED =green, R302 should =0 v, If PPWR no-response when the power switch Turn on and turn off, replace the U203-GM5120/2120

Check R302 should have response from 0V to 5V When we switch the power switch from on to off

NG

OK,R308 have response NG, no Voltage Measured the Q302 pin 5,6,7,8= 5 V? Check U202 pin 1,2,3,4= 5V

Yes OK Replace Q302 ( Nmos, SI9933)

OK

3.Inverter Control Relative Circuit

Measured the inveter connector CN402 Pin2 on/off control=3.3V (on) Pin4 PWM signal control dim 0V-5V

NG

Check the Bklt-On relative circuit, R409, In normal operation, when LED =green, R409 Bklt-On should =5 v, If Bklt-On no-response when the power switch turn on-off, Replace U203 GM5120

NG, still no screen NG

Replace Power board to new-one, and Check the screen is normal ??

Replace Power board & Re-do white balance

OK

35

4.U203-Data Output
NG , no transition Replace GM5120 (U203) or replace MAINBOARD.

Measured DCLK(R240)DVS, DHS (pin 117,116 from U203 ) Is the waveform ok? DCLK around 48 MHZ , DVS=60.09Hz , DHS around 80 KHz ?(refer to input signal=640x480@60 Hz 31k, and LED is Green) OK

Check U203 gm2120, Signal output ER0~7,EG0~7,EB0~7,OR0~7,OG0~7,OB0~7, Is the waveform ok ?

If MainBoard being replace , please do the DDC content

OK

Check U301,U302 LVDS IC Signal output Is the waveform ok?

Replace U301,U302 LVDS IC or replace MAINBOARD.

OK

36

Power/Inverter Board
1.) No Power

Check to CN102 Pin1 and pin2 = 5V NG O

Check Interface board

Check AC line volt 120V or 220V NG OK Change F901 , check BD901,Q903,IC901

Check the voltage of C905(+) NG OK Check bridge rectified circuit cFailure

Check start voltage for the pin3 of IC901 NG OK Repeating the start voltage Change IC901

Check the auxiliary voltage is smaller than 20V NG 1) Check IC902, IC903 2) Check Q901,Q902...OVP circuit Check R919, D910,D911,D912,D913, ZD904

OK

37

2.) W / LED , No Backlight

Check C201(+) =12V OK NG Change F902 Check D201/Q209/Q210 or D202/Q211/Q212 Check ON/OFF signal NG OK Check Interface board

Check U201 pin9=12V pin9=12vvoltage of C905(+) OK NG Change Q201 or Q202

Check the pin1 of U201 have sawtooth wave OK NG Change U201

Check D201(-),D202(-) have the output of square wave at short time. OK NG Check Q205/Q207/Q203/D201 or Q206/Q208/Q204/D202 Check the resonant wave of pin2 & pin5 for PT201/PT202 NG

OK

Check Q209/Q210/C213 or Q211/Q212/C214

Check the output of PT201/PT202 OK NG Change PT201or PT202

Check connecter & lamp
38

KeyPad Board

OSD is unstable or not working

N Is KeyPad Board connecting Y N Is Button Switch normally ? Replace Button Switch Connect KeyPad Board

Y N Is KeyPad Board Normally ? Y Check Main Board Replace KeyPad Board

39

Chapter 5
Connector Information
The following figure shows the connector locations on the monitor board:

1 6 11

5 10 15

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

PIN NO. 1. 2. 3. 4. 5. 6. 7. 8.

DESCRIPTION Red Green Blue Ground Ground R-Ground G-Ground B-Ground

PI N NO. 9. 10. 11. 12. 13. 14. 15.

DESCRIPTION NC Ground Ground DDC-Serial Data H-Sync V-Sync DDC-Serial Clock

24 - Pin Color Display Signal Cable(DVI)

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

Meaning TMDS Data2TMDS Data2+ TMDS Data 2/4 Shield not connected not connected DDC Clock DDC Data Analogue Vertical Sync TMDS Data1TMDS Data1+ TMDS Data 1/3 Shield not connected

Pin 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24.

Meaning not connected +5V Power Ground Hot Plug Detect TMDS Data0TMDS Data0+ TMDS Data 0/5 Shield not connected not connected DDC Clock Shield DDC Clock+ DDC Clock-

40

Chapter 6
FRU (Field Replaceable Unit) List
This chapter gives you the FRU ( Field Replaceable Unit ) listing in global configurations of Acer Altos AL1721h.Refer to this chapter whenever ordering for parts to repair or for RMA ( Return Merchandise Authorization ).Please note that WHENORDERING FRU PARTS, you should check the most up-to-date information available on your regional web or channel. For whatever reasons a part number change is made, it will not be noted on 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 goverment ordinance or regulations on how to dispose it properly, or follow the rules set by your regional Acer office on how to return it. Exploded Diagram

MODEL ACER 1721H
MAIN_FRAME (15L5919-1)

LENS_FUNCTION (33L4635)

(M3*6)*8PCS

SHIELD (85L640-1) 16.BEZEL BKT_VESA (15L5791-1)

(M3*6)*4PCS

NO:

PANT NO: 5L6013 33L4697 33L4699 34L1279 15L5981 12L394-3 19L6006 33L4647 37L491 33L4700 33L4701 34L1280 33L4696 19L573 33L4698 34L1187 33L4635 33L4634 15L5919-1 85L640-1 15L5791-1 34L1188 34L1279

PANT NAME: LIFT_RUBBER LIFT_COVER STAND_COVER STAND BASE_PLATE FOOT_PORON STAND_CLIP TILT_COVER HINGE VESA_COVER VESA_COVER STAND_LIFT LIFT_HOLDER SPRING SPRING_HOLDER BEZEL LENS_FUNCTION BUTTON_FUNC MAIN_FRAME MAIN_SHIELD BKT_VESA REAR_COVER R/C_COVER T3*8 T3*8 M3*6 M3*4 M3*6 T3*6 T3*12 T3*12 M4*12 M3*4 T3*10 M3*6

BUTTON_FUNCTION

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

1 1 1 1 1
5

REAR_COVER (34L1188)
(M

(

( 32.SCREW(M ( 4* * PCS )

1
1
30.SCREW( ( 3* * PCS ) (M

1 1 1 1
5

(M * )* PCS

(

1
5

1 1 1 1 1 1 1 1 2 2 8 4 2 5 4 2 4 2 3 4

Q1L10308128 Q1L10308128 M1L11306128 M1L3304128 M1L3306120 Q1L1306120 Q1L13012120 Q1L13012120 M1L174012120 M1L3304128 Q1L33010120 M1L3306120

5.BASE_PLATE(15L5981)

( 3*12 *2PCS

( 3*

* PCS

(12L394-3)
* PCS

MODEL ACER 1721H

41

Note: Above picture show the description of the following component

Item 1

Picture

Description
VESA COVER

Part No.
33L4700-GD-L 33L4701-GD-L

2

Stand

34L1279-GD-L

3 4 5 6 7 8

SCREW

M1L 330 6120

SCREW

Q1L 130 6120

FOOT-PORON VESA BRACKET

12L 394 3 15L5791 1

BASE PLATE

15L5981 1

HINGE

37L 491 1

9 10 11

SHIELD

85L 641 1

MAIN FRAME

15L5921 1

33L4697-GD-L LIFT COVER

42

Item 12 13

Picture

Description
REAR COVER

Part No.
34L1188AGD 2B

LIFT HOLDER

33L4696 GD L

14 15

SPRING HOLDER

33L4698-GD-X

34L1280-GD-B STAND LIFT

43

Chapter 7
Schematic Diagram
Analog And Digital Input
12/20 DDC_SDA_A1 DDC_SCL_A1 R108 R109 R114 R115 100 100 100 100 DDC_SDA_A DDC_SCL_A UART_DI UART_DO P.3 P.3 P.3 P.3 C102 1uF/16V C103 1uF/16V C104 1uF/16V GPIO5/UART_DO GPIO4/UART_DI GPIO5/UART_DO GPIO4/UART_DI 1 2 3 4 GND NC +5V +5V

RS232
CN202

GPIO4/UART_DI GPIO5/UART_DO

ZD106 MLL5232B 5.6V(NC)

C118 0.1uF/16V ZD107 MLL5232B 5.6V(NC) GND D103 BAV99

D104 BAV99 D105 BAV99 GND

GND VGA_5V +5V D106 BAT54C-GS08

GND 2003/02/21 EMI SOULATION ADD C118

FB101 VGA_5V C114 0.1uF/16V FB102 Rin Gin FB103 Bin GPIO5/UART_DO

51 1/16W

R126 33 1/16W C108 0.01uF/16V R127 47 1/16W C109 0.01uF/16V

RED+ RED-

R116 20K GND

R117 20K GPIO4/UART_DI R118 100 11 DDC_SDA_A1 12

CN102 17 DB15 1 6 2 7 3 8 4 9 5 10

51 1/16W

R128 33 1/16W C110 0.01uF/16V R129 47 1/16W C111 0.01uF/16V

GREEN+ GREEN-

51 1/16W

R130 150 1/16W C112 0.01uF/16V R131 47 1/16W C113 0.01uF/16V

U104 1 2 A0 VCC A1 WP 3 4 A2 SCL GND SDA GND M24C02WMN6

H-Sync
8 7 6 5 ZD104 MLL5232B 5.6V

13 14

BLUE+ BLUE-

V-Sync
R119 100

C107 R123 VGA_CON 10pF 75

C106 R124 75 10pF

C105 R125 10pF 75 +3.3V

DDC_SCL_A1 15

ZD105 MLL5232B 5.6V +5V

16

GND GND R138 NC C117 0.1uF/16V

GND

GND

GND

R132 NC

R133 NC

Pins 6/7/8 are R/G/B return lines resp.
R136 47 3

U106B 74HCT14 4 R140 NC U106E 74HCT14 10 9 5

U106C 74HCT14 R139 100 6

14

14

GND VS

7

R137 47 ZD109 MLL5232B 5.6V ZD108 MLL5232B 5.6V 14

7

HS C116 NC 11 U106D 74HCT14 R141 100 8 14 NEW ADD CIRCUIT

R134 2.2K

R135 2.2K

C115 NC

NEW ADD DIGITAL 04/09

DDC_SCL_D DDC_SDA_D

R106 R107

100 1/16W DDC_SCL 12 DDC_SDA

7

7

P.3 P.3

GND

+5V

GND

C119 0.1uF/16V 2 1 GND D107 BAV99 3 DVI_5V R102 1K 1/16W R103 RX2RX2+ +5V DDC_SCL_D DDC_SDA_D RX1-IN RX1+IN 2 1 DVI_5V R101 10K 1/16W HOT_PLUG 3 RX0-IN RX0+IN GND +5V ZD101 MLL5232B 5.6V C120 0.1uF/16V GND 3 3 10K 1/16W P.3 2 1 D108 BAV99 CN101 26 A_GND T2T2+ SGND T4T4+ DDCCLK DDCDAT A_VSYNC T1T1+ SGND T3T3+ +5V GND HPD T0T0+ SGND T5T5+ SGND TC+ TCA_RED A_GREEN A_BLUE A_HSYNC A_GND 25 A_GND JACK +5V GND R104 10K VGA_CON R105 2 4.7K 2 1 VGA_PLUG D113 BAV99 3 3 1 C122 0.1uF/16V GND D114 BAV99 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 C1 C2 C3 C4 C5 RX2-IN RX2+IN 3

DVI_PLUG

NEW ADD DIGITAL 04/09
GND D109 BAV99

DVI_5V 1

+5V 2 D101 BAT54C-GS08 3

2 D110 BAV99 3

1

RX1RX1+

3 3

C101 0.1uF/16V RXC+IN RXC-IN 2 1 2 1 C121 0.1uF/16V R110 GND D112 BAV99 3 20K 1/16W U102 1 2 A0 VCC 3 A1 WP A2 SCL 4 GND SDA GND M24C02WMN6 8 7 6 5 R111 20K 1/16W R112 100 1/16W DDC_SCL_D DDC_SDA_D GND

DIGITAL USE
NEW ADD CIRCUIT 3

D111 BAV99

RX0RX0+ +5V

3 3

ZD102 MLL5232B 5.6V

ZD103 MLL5232B 5.6V

R113 100 1/16W

GND

GND GND

ZD110 MLL5232B 5.6V

RXC+ RXC-

3 3

ACER GM5120/2120
Title

GND Size C Date:

ANALOG&DIGITAL INPUT
Document Number

715L1123-A
Monday, May 12, 2003 Sheet 2 of 7

Rev A

44

Gm5120/Gm2120
A3.3V DEN R240 D3.3V 33 1/16W 33 1/16W 33 1/16W PDEN PHS PVS PCLK 60 C260 22pF RP210 OG7 1 OG6 2 OG5 3 OG4 4 OG3 OG2 OG1 OG0 RP209 1 2 3 4 0 1/16W OPG7 8 7 OPG6 6 OPG5 5 OPG4 8 7 6 5 0 1/16W OPG3 OPG2 OPG1 OPG0 OPG[0..7] P.5 OB3 OB2 OB1 OB0 OB7 OB6 OB5 OB4 RP212 1 2 3 4 RP211 1 2 3 4 0 1/16W 8 OPB7 7 OPB6 OPB5 6 5 OPB4 0 1/16W OPB3 8 7 OPB2 6 OPB1 5 OPB0 OPB[0..7] P.5

SPEC(150mA)
C231 C232 C233 0.1uF/16V 0.1uF/16V 0.1uF/16V C234 C227 C226 C228 C238 C239 C240 C241 C242 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 12/20 A3.3V C251 1uF/16V GND D2.5V 196 193 187 181 173 172 168 164 160 150 146 141 188 182 176 155 153 203 134 88 26 139 144 148 2 20 37 53 67 81 97 111 129 C203 0.1uF/16V D2.5V D3.3V

DHS R242 DVS R241 D-CLK FB201

SPEC(500mA)
U203 C217 C218 C214 C212 C213 C215 C216 C219 C220 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V GND A2.5V GND D3.3V 199

GND

VDD_DDDS_3.3 VDD_SDDS_3.3 VDD_DPLL_3.3 RVDD RVDD RVDD RVDD RVDD RVDD RVDD RVDD RVDD

AVDD_RXC AVDD_RX0 AVDD_RX1 AVDD_RX2 AVDD_IMB AVDD_RED AVDD_GREEN AVDD_BLUE AVDD_ADC AVDD_RPLL AVDD_SDDS AVDD_DDDS

VDD_RX0_2.5 VDD_RX1_2.5 VDD_RX2_2.5 VDD1_ADC_2.5 VDD2_ADC_2.5 CVDD_2.5 CVDD_2.5 CVDD_2.5 CVDD_2.5

VDD_RXPLL_2.5

DEN/TCON_ECLK DHS/TCON_LP DVS/TCON_FSYNC DCLK/TCON_OCLK PD47/OB7 PD46/OB6 PD45/OB5 PD44/OB4 PD43/OB3 PD42/OB2 PD41/OB1 PD40/OB0 PD39/OG7 PD38/OG6 PD37/OG5 PD36/OG4 PD35/OG3 PD34/OG2 PD33/OG1 PD32/OG0 PD31/OR7 PD30/OR6 PD29/OR5 PD28/OR4 PD27/OR3 PD26/OR2 PD25/OR1 PD24/OR0 PD23/EB7 PD22/EB6 PD21/EB5 PD20/EB4 PD19/EB3 PD18/EB2 PD17/EB1 PD16/EB0 PD15/EG7 PD14/EG6 PD13/EG5 PD12/EG4 PD11/EG3 PD10/EG2 PD9/EG1 PD8/EG0 PD7/ER7 PD6/ER6 PD5/ER5 PD4/ER4 PD3/ER3 PD2/ER2 PD1/ER1 PD0/ER0

115 116 117 118 110 109 108 107 106 105 104 103 102 101 100 99 96 95 94 93 92 91 90 87 86 85 84 83 80 79 78 77 76 75 74 73 72 71 70 69 66 65 64 63 62 61 60 59 58 57 56 55 OB7 OB6 OB5 OB4 OB3 OB2 OB1 OB0 OG7 OG6 OG5 OG4 OG3 OG2 OG1 OG0 OR7 OR6 OR5 OR4 OR3 OR2 OR1 OR0 EB7 EB6 EB5 EB4 EB3 EB2 EB1 EB0 EG7 EG6 EG5 EG4 EG3 EG2 EG1 EG0 ER7 ER6 ER5 ER4 ER3 ER2 ER1 ER0

DEN DHS DVS D-CLK

SPEC(60mA)
C210 C201 C202 0.1uF/16V 0.1uF/16V C204 C205 C206 C207 C208 C209 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V 0.1uF/16V

GND A2.5V

SPEC(50mA)
12/20

R232 R231 NC NC NC 10K 10K NC 10K 10K NC NC NC 10K 10K NC 10K 10K

RXXX NC NC NC NC 10K 10K 10K 10K

157 158 161 165 169 175 178 184 190 197 198 149 145 140 GND

SAMSUNG EH CHIMEI E4 SAMSUNG EU HYDIS 200/300 CPT 170EA02 (RESERVED) (RESERVED) AU EN05
D3.3V

C252 1uF/16V

C244 0.1uF/16V P.5 P.5 GND A3.3V C246 5pF C247 5pF /CE P.2 DVI_PLUG P.2 VGA_PLUG P.2 DDC_SDA_A P.2 DDC_SCL_A D201 NC P.2 DDC_SCL P.2 DDC_SDA 4LED BANK1 GND R204 2.7K BANK0 X201 14.318MHz 152 2 206 207 208 1 205 204 1 151 PPWR PBIAS

SGND_ADC AGND_ADC AGND_BLUE AGND_GREEN AGND_RED AGND_IMB AGND_RX2 AGND_RX1 AGND_RX0 AGND_RXC AGND_RXPLL AVSS_RPLL AVSS_SDDS AVSS_DDDS

RP208 OR7 1 OR6 2 OR5 3 OR4 4 OR3 OR2 OR1 OR0 1 2 3 4

8 7 6 5 RP207

0 1/16W OPR7 OPR6 OPR5 OPR4 0 1/16W 8 OPR3 OPR2 7 6 OPR1 OPR0 5 0 1/16W

OPR[0..7] P.5

113 114 PPWR PBIAS

RP206 EB7 EB6 EB5 EB4 RP205 EB3 EB2 EB1 EB0

1 2 3 4 1 2 3 4

8 7 6 5

EPB7 EPB6 EPB5 EPB4

EPB[0..7] P.5

XTAL

0 1/16W 8 EPB3 7 EPB2 EPB1 6 5 EPB0

TCLK GPIO20/HDATA3 GPIO19/HDATA2 GPIO18/HDATA1 GPIO17/HDATA0 GPIO16/HFS GPIO22/HCLK

EG7 EG6 EG5 EG4 EG3 EG2 EG1 EG0

RP204 1 2 3 4 RP203 1 2 3 4 RP202

0 1/16W 8 EPG7 EPG6 7 6 EPG5 EPG4 5 0 1/16W 8 EPG3 7 EPG2 6 EPG1 EPG0 5

EPG[0..7] P.5

ResetIC:250ms
3

R201 NC U201 TCM809SENB713 3 2 VCC RST GND

1

NEW ADD CIRCUIT FOR 2M ROM04/09 /RESET R249 NC R255 NC

6 7 DDC_SCL DDC_SDA 5 4 RESETn GPIO21/IRQn 171 170 167 166 163 162 137 136 159 194 195 179 180 185 186 191 192 RED+ REDGREEN+ GREENBLUE+ BLUEHSYNC VSYNC ADC_TEST RXC+ RXCRX2+ RX2RX1+ RX1RX0+ RX0REXT ROM_ADDR15 ROM_ADDR14 ROM_ADDR13 ROM_ADDR12 ROM_ADDR11 ROM_ADDR10 ROM_ADDR9 ROM_ADDR8 ROM_ADDR7 ROM_ADDR6 ROM_ADDR5 ROM_ADDR4 ROM_ADDR3 ROM_ADDR2 ROM_ADDR1 ROM_ADDR0 ROM_DATA7 ROM_DATA6 ROM_DATA5 ROM_DATA4 ROM_DATA3 ROM_DATA2 ROM_DATA1 ROM_DATA0 RVSS RVSS RVSS RVSS RVSS RVSS RVSS RVSS RVSS ROM_OEn CVSS CVSS CVSS CVSS CVSS

2

+ C245 NC

+3.3V

+5V

3.3V

+5V GND FB204 NC FB205 600

P.2 RED+ P.2 REDP.2 GREEN+ P.2 GREENP.2 BLUE+ P.2 BLUEP.2 HS P.2 VS P.2 P.2 P.2 P.2 P.2 P.2 P.2 P.2 RXC+ RXCRX2+ RX2RX1+ RX1RX0+ RX02003/02/21 EMI SOULATION ADD C253 C253

ER7 ER6 ER5 ER4

1 2 3 4

0 1/16W EPR7 8 EPR6 7 EPR5 6 5 EPR4 0 1/16W 8 EPR3 EPR2 7 6 EPR1 5 EPR0

EPR[0..7]

P.5

1

FB204

FB205

RP201 ER3 1 ER2 2 ER1 3 ER0 4

1206

1206

+PV

DIGITAL PORT

A3.3V R205 1K 1% RMADDR15 RMADDR14 RMADDR13 RMADDR12 RMADDR11 RMADDR10 RMADDR9 RMADDR8 RMADDR7 RMADDR6 RMADDR5 RMADDR4 RMADDR3 RMADDR2 RMADDR1 RMADDR0 RMDATA7 RMDATA6 RMDATA5 RMDATA4 RMDATA3 RMDATA2 RMDATA1 RMDATA0 ROM_OEn 32 16 C248 0.1uF/16V GND GM5120 PQFP-208 174 8 9 10 11 12 13 14 15 16 17 18 19 22 23 24 25 28 29 30 31 32 33 34 35 36

+PV

+PV

8/26 modify

+PV R223 10K 1/16W R221 10K R227 0 1/16W BANK1 RMADDR15 RMADDR14 RMADDR13 RMADDR12 RMADDR11 RMADDR10 RMADDR9 RMADDR8 RMADDR7 RMADDR6 RMADDR5 RMADDR4 RMADDR3 RMADDR2 RMADDR1 RMADDR0 /CE R247 0 R248 10K 1/16W R250 NC 0.1uF/16V 31 30 2 3 29 28 4 25 23 26 27 5 6 7 8 9 10 11 12 GND U202 /ROM_WE WE NC/A17 A16 A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0

TCON_OSP TCON_OPOL TCON_OINV TCON_ESP TCON_EPOL TCON_EINV TCON_RSP2 TCON_RSP3 TCON_RCLK GPIO10/TCON_ROE3 GPIO9/TCON_ROE2 TCON_ROE GPIO4/UART_D1 GPIO5/UART_D0 GPIO13 GPIO12 GPIO8/IRQINn GPIO11 GPIO7 GPIO6/EXTCLK GPIO3/TIMER1 GPIO2/PWM2 GPIO1/PWM1 GPIO0/PWM0

119 120 121 122 123 124 125 126 127 49 48 128 44 45 52 51 39 50 47 46 43 42 41 40 SCL SDA /ROM_WE GPIO7 GPIO6 GPIO3 GPIO0/PWM0

LED_ORANGE LED_GREEN LVDS_EN P.5 R216 4.7K WP MUTE_OUT STBY_OUT FB203 60 UART_DI UART_DO

P.5 P.5

FB202

60

R246 R239 R238 R234 R237

R232 R206 R208 R231 R207

P.2 P.2

10K 1/16W

10K 1/16W

10K 1/16W

10K 1/16W

10K 1/16W

10K 1/16W

10K 1/16W

10K 1/16W

R233 NC

BANK0 10K 1/16W RMADDR14 RMADDR9 RMADDR8 RMADDR10 RMADDR11 RMADDR3 RMADDR4 RMADDR12 RMADDR2 RMADDR1 RMADDR0

10K 1/16W

DQ7 DQ6 DQ5 DQ4 DQ3 DQ2 DQ1 DQ0

21 20 19 18 17 15 14 13

RMDATA7 RMDATA6 RMDATA5 RMDATA4 RMDATA3 RMDATA2 RMDATA1 RMDATA0

GPIO8 P.4 /ROM_WE GPIO7 P.4 GPIO6 P.4 GPIO3 P.4 GPIO2 P.4 VOL_OUT PWM0 P.4

Int_Test CLKOUT

201 200 142 132 131 GND

GND1_ADC GND2_ADC GND_RX2 GND_RX1 GND_RX0

R222 10K +PV

NC VCC GND

1

+PV

VSS_DPLL VSS_SDDS VSS_DDDS

3 21 38 54 68 82 98 112 130

27 89 133 135 202

156 154 177 183 189

SOCKET

BOOTSTRAP SIGNALS
ADDRESS ROM_ADDR(4:0) ROM_ADDR5 ROM_ADDR6 ROM_ADDR7 ROM_ADDR8 ROM_ADDR9 NAME USER_BITS(4:0) Reserved SCLPOL HOST_PROTOCOL HOST_PORT_EN OCM_START SET x x x 0 1 1 x 0 1 DESCRIPTION Available for reading from a status register If using 6-wire host protocol, program this bit to 0 Determines polarity of HCLK signal If using 6-wire host protocol, program this bit to 1 GPIO(22:16) is on "Host Port" pins 1 = OCM becomes active after OCM_CLK is stable Available for reading from a status register 0 = XTAL and TCLK pins are connected 1 = All 48K of ROM is in external ROM
+PV

32-Pin PLCC Socket

147 143 138

24 22 OE CE

N/C N/C Reserved Reserved

+PV

C249

0.1uF/16V +PV GND R214 10K SCL SDA R243 WP R215 10K U204 8 7 6 5 VCC WP SCK SI 1 A0 2 A1 3 A2 4 VSS GND

FLASH/ Prom-Jet Socket

GND

R251 0 1/16W

R244 4.7K

M24C16-MN6T

GND NC NEW ADD CIRCUIT FOR 2M ROM04/08 2003/02/21 EMI SOULATION ADD C254 C254 0.1uF/16V GND GND R245 0 Title gm5120 Size C Date: Document Number Rev A Sheet 3 of 7

ROM_ADDR(12:10) USER_BITS(7:5) ROM_ADDR13 ROM_ADDR14 OSC_SEL OCM_ROM_CFG(1)

ACER GM5120/2120

715L1123-A
Monday, May 12, 2003

45

LVD-S
3.3V FB301 600

+ C300 C301 C302 C303 0.1uF/16V 0.1uF/16V 0.1uF/16V 10uF/16V

U301 P.3 EPB[0..7] EPB0 EPB1 EPB2 EPB3 EPB4 EPB5 EPB6 EPB7 EPG0 EPG1 EPG2 EPG3 EPG4 EPG5 EPG6 EPG7 EPR0 EPR1 EPR2 EPR3 EPR4 EPR5 EPR6 EPR7 51 52 54 55 56 3 50 2 4 6 7 11 12 14 8 10 15 19 20 22 23 24 16 18 TXIN0 TXIN1 TXIN2 TXIN3 TXIN4 TXIN6 TXIN27 TXIN5 TXIN7 TXIN8 TXIN9 TXIN12 TXIN13 TXIN14 TXIN10 TXIN11 TXIN15 TXIN18 TXIN19 TXIN20 TXIN21 TXIN22 TXIN16 TXIN17

1 9 26

GND PWRDWN TXOUT0TXOUT0+ TXOUT1TXOUT1+ TXOUT2TXOUT2+ TXOUT3TXOUT3+ 32 48 47 46 45 42 41 38 37 LVDS_ON TX0-E TX0+E TX1-E TX1+E TX2-E TX2+E TX3-E TX3+E 3.3V 40 TXCLKOUT- 39 TXCLKOUT+ LVDSVCC LVDSGND LVDSGND LVDSGND PLLVCC PLLGND PLLGND GND GND GND GND GND R_FB 44 49 43 36 34 35 33 53 29 21 13 5 17 GND +P5V GND CONN GND + C306 C307 0.1uF/16V 10uF/16V 600 TX0+O TX1+O TX2+O TXCK+O TX3+O TX0+E TX1+E TX2+E TXCK+E TX3+E 2 4 6 8 10 12 14 16 18 20 22 24 + C304 C305 0.1uF/16V 10uF/16V 600 FB303 CN301 1 3 5 7 9 11 13 15 17 19 21 23 TX0-O TX1-O TX2-O TXCK-O TX3-O TX0-E TX1-E TX2-E TXCK-E TX3-E 3.3V TXCK-E TXCK+E FB302 LVDS_EN P.3

P.3

EPG[0..7]

V V V

P.3

EPR[0..7]

CONNECTOR for PANEL

PHS PVS PDEN

25 27 TXIN23 28 TXIN24 30 TXIN25 TXIN26 31 TXCLKIN

PCLK(PCLK1)
GND R309 47 PCLK R310 47 PCLK1

THC63LVDM83R

(5mm)
+ C309 C310 C311 C312 0.1uF/16V 0.1uF/16V 0.1uF/16V 10uF/16V + C313 C314 47uF/16V 0.1uF/16V

P.4

OPB[0..7] OPB0 OPB1 OPB2 OPB3 OPB4 OPB5 OPB6 OPB7 OPG0 OPG1 OPG2 OPG3 OPG4 OPG5 OPG6 OPG7 OPR0 OPR1 OPR2 OPR3 OPR4 OPR5 OPR6 OPR7 51 52 54 55 56 3 50 2 4 6 7 11 12 14 8 10 15 19 20 22 23 24 16 18

U302 TXIN0 TXIN1 TXIN2 TXIN3 TXIN4 TXIN6 TXIN27 TXIN5 TXIN7 TXIN8 TXIN9 TXIN12 TXIN13 TXIN14 TXIN10 TXIN11 TXIN15 TXIN18 TXIN19 TXIN20 TXIN21 TXIN22 TXIN16 TXIN17

1 9 26

GND PWRDWN TXOUT0TXOUT0+ TXOUT1TXOUT1+ TXOUT2TXOUT2+ TXOUT3TXOUT3+ 32 48 47 46 45 42 41 38 37 LVDS_ON TX0-O TX0+O TX1-O TX1+O TX2-O TX2+O TX3-O TX3+O TXCK-O TXCK+O

V V V

C322 0.01uF/16V

P.4

OPG[0..7]

GND

40 TXCLKOUT- 39 TXCLKOUT+ LVDSVCC LVDSGND LVDSGND LVDSGND PLLVCC PLLGND PLLGND GND GND GND GND GND R_FB 44 49 43 36 34

P.4

OPR[0..7]

+ C315 C316 0.1uF/16V 10uF/16V

+5V

+5V

R303 35 33 53 29 21 13 5 17 P.3 PPWR R302 4.7K GND GND R308 3K ACER GM5120/2120 ACER GM5120/2120 5 6 7 8 + C317 C318 0.1uF/16V 10uF/16V 10K 1/16W R304 10K 1/16W 4 3 2 1 C321 0.1uF/16V +P5V GND Q302 SI9933ADY-T1

PHS PVS PDEN PCLK1

25 27 TXIN23 28 TXIN24 30 TXIN25 TXIN26 31 TXCLKIN

THC63LVDM83R GND

GND

D2 D2 D1 D1

Q301 PMBS3904

C320 100pF

G2 S2 G1 S1

GND

Title

LVDS Interface
Size Document Number Custom Date: Rev

715L1123-A
Sheet 4 of 7

A

Monday, May 12, 2003

46

Key Board Connector
NEW ADD CIRCUIT FOR 4 LED 04/09 +5V R407 NC +3.3V R408 NC R406 FB405 600 OHM C406 NC C405 NC 0 1/16W LED_BLUE# R403 NEW ADD CIRCUIT FOR 4 LED 10K 1/16W 04/09 1 2 3 4 8 7 6 5 RP402 10K 1/16W +5V LED_GRN LED_ORG KEY_AUTO KEY ENTER KEY_RIGHT KEY LEFT KEYON_OFF GND GND FB403 FB404 600 OHM 600 OHM FB401 60 GND +3.3V CN403 1 2 3 4 5 6 7 8 9 10 11 12 13 14 CONN C408 C423 150pF 68pF C407 150pF C422 68pF C430 NC 1 2 3 4 +3.3V

JP403,JP404 Package JP403 JP404

JP403
4.7K 1/16W 4 3 2 1

JP404
R404 R405 1K 1/16W NC

Earphone(R) P.6 Earphone(L) P.6 OUT(L) P.6 OUT(R) OUT(R) P.6

P.4 P.4 P.4 P.4 P.4

GPIO7 GPIO6 GPIO3 GPIO2 GPIO8

RP401 5 6 7 8

KEY_RIGHT KEY ENTER KEY_AUTO KEYON_OFF KEY LEFT

R218 1K VOL_OUT VOL

0603

0603

VOL_OUT

R412 4.7K +5V

+

C250 22uF/16V

60

FB402 8 7 6 5 R422 CP301 NC 1K 1/16W R423 1K 1/16W STDBY R421 0 MUTE R420 0 C420 R431 NC +5V R429 NC R427 +3.3V R428 NC R426 4LED NC C414 NC CN402 2 4 6 8 10 12 CONN 1 3 5 7 9 11 4.7K 1/16W R409 PBIAS P.4 +12V +5V 7 1 3 NC Q403 NC 2 C415 NC LED_BLUE# 14 2003/02/21 EMI SOULATION NEW C421 & C420 104 U106F 74HCT14 12 0 1/16W NC GND NEW ADD CIRCUIT FOR 4 LED 04/09 GND GND GND C421 0.1uF/16V 0.1uF/16V GND VOL VOL 3

STBY_OUT

STDBY

3

GND GND EMI SOULATION ADD C422,C423,FB403,FB404 2003/02/21 GND

MUTE_OUT

MUTE

3

R401 LED_GRN C417

P.4

LED_GREEN

13

1/10

GND

BackLight On/Off Brightness GND +12V
+5V +3.3V +3.3V +5V 14

NEW ADD CIRCUIT FOR 4 LED 04/08

+5V
R413 470 1/16W +5V GND 2 C409 R410 620 1/16W 150uF/25V + C410 0.1uF/16V + C411 150uF/25V C412 D401 0.1uF/16V MLL4148 R415 1 1K 1/16W D402 NC LED_ORG 7 R430 NC R418 NC R417 R419 220 1/16W NC P.4 LED_ORANGE 1

U106A 74HCT14 2

R402 LED_ORG 0 1/16W C419 NC GND

1/10
Q402 PMBS3906 3

NEW ADD CIRCUIT FOR 4 LED 04/08

2

Brightness
P.4 PWM0 PWM0 R411 1K 1/16W GND LED_GRN R425 + C413 22uF/16V LED_BLUE# GND NC

R414 1 LED_GRN 330 1/16W R424 NC R416 0 1/16W

Q401 PMBS3906 3

ACER GM5120/2120
Title

K.B AND CONNECTOR
Size B NEW ADD CIRCUIT FOR 4 LED 04/09 Date: Document Number Rev

715L1123-A
Monday, May 12, 2003 Sheet 5 of 5

A

47

Audio
AUDIO_SD MUTE D2 R14 MLL4148 D3 MLL4148 R12 10K 1/16W 100 1/16W C21 1uF/16V M2 1 2 3 4 5 PHONEJACK 3 STDBY STDBY NC CN2 OUT(L) OUT(R) 1 2 3 4 NC R10 C14 100pF R11 2.7K 1/16W C15 10K 1/16W 1/16W 100pF 10K C16 0.1uF/16V C13 0.1uF/16V C7 R4 R3 5.1K 1/16W 5.1K 1/16W R1 C9 0.47uF/16V 6 11 12 0.47uF/16V 4 9 INL INR VOLUME STBY MUTE C22 C6 0 1/16W R2 470 1/16W 1uF/16V 16 15 8 U1 TDA7496L Earphone(L) P4 + C1 150uF/25V + C2 150uF/25V C3 0.1uF/16V C17 68PF R13 100 1/16W C18 68PF +12V 2003/02/21 EMI SOULATION NEW C17~C20 68PF

VS

NC

VS

OUTL OUTR SVR VAROUT_R VAROUT_L

17 14 10 7 5

C8

470uF/16V 470uF/16V +

OUT(L) OUT(R) OUT(R)

+

OUT(L) P4 P4

C10

C11 0 1/16W R8 470 1/16W Earphone(R) R6 1K 1/16W P4

GND GND GND GND GND GND GND

R7 1K 1/16W

C19 68PF

+ C12 150uF/25V

1 2 3 13 18 19 20

C20 68PF R9 VOL 2003/02/21 EMI SOULATION NEW C17~C20 68PF VOL 3

D1 NC

ACER GM2120

GM5120/2120
Title

6. AUDIO
Size B Date: Document Number 715L1123-A Monday, May 12, 2003 Sheet 6 of 7 Rev A

48

DC Power
D2.5V FB501 A2.5V D3.3V FB502 A3.3V +3.3V FB503 3.3V

600OHM C501 47uF/16V

+ C502 C503 0.1uF/16V 0.01uF/16V

600OHM + C504 47uF/16V

C505 C507 0.1uF/16V 0.01uF/16V

600OHM + C508 47uF/16V

C509 C510 0.1uF/16V 0.01uF/16V

GND

GND GND

+5V

SOT-223
U501 3 VI GND VO 2 C514

D3.3V

+ C515 C516 +5V

C511

+

C512

C513

SOT-223
U502 3 VI GND VO 2

+3.3V

47uF/16V 0.1uF/16V 0.01uF

100uF/16V 0.1uF/16V 0.01uF GND C. 150 uF 25V CHANGE DIP SIZE

1

C517

+

C518

C519

C520

+

C521

C522

100uF/16V 0.1uF/16V 0.01uF GND C. 150 uF 25V CHANGE DIP SIZE D2.5V

1

47uF/16V

0.1uF/16V 0.01uF

+5V

TO-252
U503 3 1 VIN ADJ C526 RT9164 + C527 VOUT 2

C523

+

C524

C525

C528

100uF/16V 0.1uF/16V 0.01uF GND

47uF/16V

0.1uF/16V 0.01uF

ACER GM5120/2120
Title

DC POWER
Size A Date: Document Number Rev

715L1123-A
Monday, May 12, 2003 Sheet 7 of 7

A

49

Appendix
Online Support Information
This section describes online technical support services available to help you repair your Acer Systems. If you are a distributor, dealer, ASP or TPM, please refer your technical queries to your local Acer branch office. Acer Branch Offices and Regional Business Units may access our website. However some sources will require a user i.d. and password. These can be obtained directly from Acer CSD Taiwan. Acer's Website offers you convenient and valuable support resources whenever you need them. In the Technical Information section you can download information on all of Acer's Notebook, Desktop Server models including: Service guides User's manuals Training materials Bios updates Spare parts lists TABs (Technical Announcement Bulletin) For these purposes, we have included an Acrobat File to facilitate the problem-free downloading of technical material. Also contained on this website are: Detailed information on Acer's International Traveler's Warranty (ITW) Returned material authorization procedures An overview of all the support services we offer, accompanied by a list of telephone, fax contacts for all your technical queries. We are always looking for ways to optimize and improve our services, so if you have any suggestions comments, please do not hesitate to communicate these to us.

50