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Acer AL1921

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Acer AL1921 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 2004 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.

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.

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.
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 ENERGY STAR guidelines for energy efficiency. that this product meets the

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.

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.

Special Notes On LCD Monitors
The following symptoms are normal with LCD monitor and do not indicate a problem.
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.

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 Mechanical Specification Front Bezel Rear Bezel Operating Instructions External Controls Front Panel Controls OSD Menu Hot-Key Menu OSD Message LOGO Update the firmware Machine Disassembly Troubleshooting Connector Information FRU (Field Replacement Unit) List Exploded Diagram Schematic Diagram Analog and Digital Input MST8131B LVD-S Key Board Connector Audio DC Power Online Support Information. . . . . 58

Chapter 2

Chapter 3 Chapter 4 Chapter 5 Chapter 6

Chapter 7

Appendix

Chapter 1

Monitor Features
AU EN02 Driving system Size Pixel pitch LCD Panel Brightness Contrast Viewable angle Response time Video Digital Input Separate H/V TTL Sync. H-Frequency 30KHz 80KHz V-Frequency 55-75Hz 16.7M Colors 165MHz 1280 x 1024 @75Hz VESA DDC1/2BTM ON Mode OFF Mode 60W 5W D-Sub 15pin DVI-D 24pin Analog:0.7Vp-p(standard), 75 OHM, Positive Digital:DVI-D Horizontal : 376.32mm Vertical : 301.056mm 100~240VAC,47~63HZ Operating Temp: 5 to 50C Storage Temp.: -20 to 65C Operating Humidity: 10% to 85% 404.2(w)x330(H)x20(D) 4.2kg TFT Color LCD 48cm(19.0") 0.294mm( H )x 0.294mm( V ) 250cd/m2 (Typical) 700:1(Typical) 170 (H) 170 (V) 25ms(Tr+Tf ),Tr=15ms,Tf=10ms R,G,B Analog Interface Digital H/V TTL 30KHz 80KHz 55-75Hz 16.7M Colors 165MHz 1280 x 1024 @75Hz VESA DDC1/2BTM 60W 5W D-Sub 15pin DVI-D 24pin Analog:0.7Vp-p(standard), 75 OHM, Positive Digital:DVI-D Horizontal : 376.32mm Vertical : 301.056mm 100~240VAC,47~63HZ Operating Temp: 5 to 50C Storage Temp.: -20 to 65C Operating Humidity: 10% to 85% 404.2(w)x330(H)x20(D) 4.2kg SEC E1-L01 TFT Color LCD 48cm(19.0") 0.294mm( H )x 0.294mm( V ) 250cd/m2 (Typical) 500:1(Typical) 170 (H) 170 (V) 25 ms(Tr+Tf)Tr=15ms/Tf=10ms

LCD Panel Specification

LCD Panel Model (SEC E1-L01) Display Type active matrix color TFT LCD Resolution 1280x1024 pixels Display Dot 1280x (RGB) x 1024 Display Area 376.32mm(H) x 301.056mm(V) Pixel Pitch 0.294mm(H) x 0.294mm(V) Display Color 16.7M (true) Lamp Frequency 80kHz Lamp Current 7.0 mArms (typ) Weight 2750g (typ) Optical Specifications
IL = 6.5mArms Ta = 25 2C Symbol CR TR TF YL RX RY GX GY BX BY WX WY L R H L BUNI F LR CR70 =0, =0 Normal Viewing Angle VDD = 5V Condition FV = 60Hz MIN. FDCLK = 54MHz TYP. MAX. 20msec cd/mm UNIT
ITEM Contrast Ratio (Center of screen) Response Time at Ta Rising Falling

250 0.634 0.354 0.304

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

TYP. -0.03

0.581 0.143 0.102 0.310 0.-

TYP. +0.03

1.7 % % Degrees

Viewing Angle

Brightness Uniformity Flicker Luminance Uniformity(TCO99)

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 --83KHz 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

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 PIXEL WIDTH PORCH PORCH FOREQ. (DOT/LINE) (DOT/LINE) (DOT/LINE) (MHZ) 248 25.175 25.175 31.5 31.5 36.0 40.0 50.0 49.0 60.0 70.0 75.135
TIMING 640x350 /DOS 640x480 VGA

79.98/75.03

Factory Preset Timing Table
STANDARD RESOLUTION 720 x 480 VGA SVGA 832 x 768 XGA 1024 x 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

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-264V) AUDIO IN

ANALOG IN

LCD Controller

-Scaler -OSD -LVDS IC -ADC

LCD PANEL

SPEAKER

KEY BOARD

MAIN BOARD DIAGRAM
VCC3.3V AT24C02 (DDC)U301 DDC SCL/SDA VGA R/G/B VGA Input VGA Hsync/Vsync RXD/TXD AT24C02 (DDC)U302 U401 MST 8131B PA 0~9 PB 0~9 VCC2.5V VAA2 VAA4

U601 Winbond

DVI Signal VLCD
EPR SDA/SCL RGB AT24C16 U602 KEY Control

Software Flow Chart

1) 2) 3) 4)
MCU initialize. Is the eeprom blank? Program the eeprom by default values. Get the PWM value of brightness from eeprom. Check the pin PANEL1 and PANEL2 to tell which panel to get with it. 5) Is the power key pressed? 6) Clear all global flags. 7) Are the AUTO and SELECT keys pressed? 8) Enter factory mode. 9) Saving 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 and digital port, are there any signals coming? 13) Does the scalar send out a interrupt request? 14) Wake up the scalar. 15) Are there any signals coming from analog or digital port? 16) Display " No Input Signal " message. And go into standby mode after the message disappear. 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?

Monitor Board Layout

Label U201 U202 U301 U302 U401 U602 U603 U601 X401 X601 CN201 CN601 CN602 CN503 CN301 CN302
Component RT9164-25CL AIC1084-33CM M24C02-WMN6T SMT M24C02-WMN6T SMT MST8131B PQFP-12 AT24C16N-10SC-2.7 MAX810STR SOT-23 W78E65P-40 CRYSTAL 14.318MHzHC-49US 20MHZ WAFER 2*6P 2.0MM R/A PIN HEADER 2*7P 2.0mm WAFER 16PIN 2.0mm DIP PIN HEADER 24P 2.0mm 88L 35315F HS DVID CONN 24P

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 <or >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.

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
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 Franais Espaol Italiano 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 Adjust Picture Phase to 0-100 0-100 reduce 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. Color Temperature from N/A The User R/G/B value(default 0-100 0-100 0-100 N/A The Language will be set to English. is 100) will not be Modified by Reset function. 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. Chinese. H. Position V. Position OSD Timeout 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 0-100 0-100 10-N/A N/A N/A N/A Description Adjustmen t Range Reset Value
Horizontal-Line noise Adjust picture Clock to reduce Vertical-Line 0-100 noise. Adjust the horizontal position of the picture. Adjust the verticalposition of the picture. Recall Recall Warm Cool Color Temperature 0-100 0-100 from N/A

EEPROM. EEPROM. Red Gain from Digital-register.
Set OSD display language to Tranditional N/A
Set OSD display language to Simplified N/A

Auto Config

Auto Adjust the H/V Position, Focus and N/A Clock of picture.
(Analog-Only Model) Analog Digital (Dual-Input Model) Information N/A Show the resolution, H/V frequency and input N/A port of current iput timing. Reset N/A Clear each old status of Auto-configuration N/A and set the color temperature to Cool. Exit N/A Exit OSD N/A N/A N/A N/A 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
2.) Hot-Key Menu: a. Outline:
b. The Description For Hot-Key Function :
Item Operation Icon Description Volume of Audio adjustment. The Audio will be Mute when volume=0. Adjustment Range Volume When the OSD is closed, press Left or Right button will be Volume Hot-Key Function 0-100 Reset Value 50
3.) OSD Message: a. Outline:
b. The Description For OSD Message :
Item Auto Config Please Wait Input Not Supported Cable Not Connected No Signal the auto config function. 2.) When Digital signal input, without this OSD Message. When the Hsync Frequency, Vsync Frequency or Resolution is out of the monitor support range, will show this message. This message will be flying. 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. 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
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 IC protocol. The host can request EDID information over the DDC2B channel. This monitor will appear to be non-functional if there is no video input signal. In order for this monitor to operate properly, there must be a video input signal. This monitor meets the Green monitor standards as set by the Video Electronics Standards Association (VESA) and/or the United States Environmental Protection Agency (EPA) and The Swedish Confederation Employees (NUTEK). This feature is designed to conserve electrical energy by reducing power consumption when there is no video-input signal present. When there is no video input 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. Update the firmware 1.Tools: a. ISP Kit (Prepared by CMO) picture 1 b. RS232 Comport Cable -- picture 2 c. D-sub Cable d. Adapter
No.1 kit 2.Install kit as below: Step1Get a Kit

No.2-kit

Step2---join RS232 Monitor cable,and Adapter

Connect to PC

Connect to monitor

Connect to adapter

Connect to chroma
Step3When the LED turns Green, It will start running
3.Program Runnig Before update the firmware ,please power on the monitor, in this time,please push your finger to control the keyswitch(left: < right , insert and draw the DC power ,the interface > will appear ISP mode. Step1-Open the ISP tool. And Select the MCU type
Step2Select Bank where is the new firmware ?
Step3Choose the File Format a: when you already choose the New firmware ,a small pane appear File Format,please choose the inte he, noBinary and following choose the OK
Step4-- Select the communication Setting: Port Name,the Port the same your PC COM
Step5-- Click the ConNect button.

Step6--

Before Executing ISP,the interface change as below Click Program All button that will execute erase and program

Step7ISP is processing.

Step8-- Then you can get the window as follow, and Program ok.
Step9--Click verify button that will execute verify action. Then you can get the window as follow, and click ok.After update the program of APROM, must remove the Reboot Mode condition.

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 fix the LVD cable with the panel,and stick 2. To fix the main frame on the panel 3. give the panel to lock the Screws 4.To fix the power board on the main frame with screws 1. To fix the audio board together with power board 6.To connect the main board with audio board and LVD cable 7.To fix the main board with screws. 8. To put the bezel on level place 9. To cover the panel with front bezel 10. To fix the shield on the main frame with screws 11. To put and fix the rear cover with screws 12. take the base together with interfaces 13. so the monitor was finishing!
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

Chapter 4

Troubleshooting
This chapter provides troubleshooting information for the AL1921:

Main Board

1. No Screen Appear
Measured U201 pin 2 = 2.5 V? Measured U202 pin 2= 3.3V?
Check Correspondent component. Is there any shortage or cold solder? Check Power Board.

Yes, all DC level exist

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 U601 MCU

Led orange Check Correspondent
Connected the Signal cable again,
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 U601 pin 4,10 signal ? ,was there have
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 U602 Data-output Block
OK, U203 data OK Replace Power board and Check Inverter control relative circuit
Measured Crystal X401(14.318MHz)

OK,clock normal

Replace U401 (MST8131B)
Re-do White balance adjust OK
Note:1.If Replace MAIN-BOARD ,Pleasere-do DDC-content programmed & WHITE-Balance. 2. If Replace Power Board only, Please re-do WHITE-Balance.

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-MST8131B
Check R302 should have response from 0V to 5V When we switch the power switch from on to off
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)
3.Inverter Control Relative Circuit
Measured the inveter connector CN402 Pin2 on/off control=3.3V (on) Pin4 PWM signal control dim 0V-5V

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 MST8131B

NG, still no screen NG

Replace Power board to new-one, and Check the screen is normal ??
Replace Power board & Re-do white balance

4.U602-Data Output

NG , no transition Replace MST8131B (U401) 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 MST8131B, 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
heck U301,U302 LVDS IC Signal output
Replace U301,U302 LVDS IC or replace MAINBOARD.

Power/Inverter Board

1.) No Power
Check to CN102 Pin1 and pin2 = 5V NG OK

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,Q902OVP circuit Check R919, D910,D911,D912,D913, ZD904
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
Check Q209/Q210/C213 or Q211/Q212/C214
Check the output of PT201/PT202 OK NG Change PT201or PT202
Check connecter & lamp

KeyPad Board

OSD is unstable or not working

Is KeyPad Board

N Connect KeyPad Board

ll ? Y N

Is Button Switch normally ?

Replace Button Switch

PA[0.9]

BA[0.5]

BB[0.1]

R508 R509 R510 R511 R512 R513 R514
NC 0 1/16W NC 0 1/16W NC NC
CN503 LVB0M RXO0LVB1M RXO1LVB2M RXO2LVBCKM RXOCLVB3M RXO3LVA0M RXE0LVA1M RXE1LVA2M RXE2LVACKM RXECLVA3M RXERXO0+ RXO1+ RXO2+ RXOC+ RXO3+ RXE0+ RXE1+ RXE2+ RXEC+ RXE3+ LVB0P LVB1P LVB2P LVBCKP LVB3P LVA0P LVA1P LVA2P LVACKP LVA3P
R508 AU 17 QDI 17 CPT 17 INNOLUX 15 HannStar 15 CPT 15 LG 15 NC 3.3V 0R 3.3V 0R 3.3V 0R 3.3V 0R

R509 NC 12V 0R NC NC NC

R510 5V 0R NC 3.3V 0R 3.3V 0R 3.3V 0R

R511 5V 0R NC NC NC NC

R512 NC 12V 0R NC 12V 0R NC

R513 5V 0R NC NC NC NC

R514 NC 12V 0R NC NC NC C509 + 22uF/16V

CONN VLCD VLCD 2

C510 0.1uF

C511 0.1uF

Size B Date: Document Number Rev Sheet 5 of 7

PANEL INTERFACE

Key Board Connector
NEW ADD CIRCUIT FOR 4 LED 04/09 +5V R407 NC R408 NC +3.3V 0 1/16W +3.3V
R406 FBOHM C406 NC LED_GRN LED_ORG KEY_AUTO KEY ENTER KEY_RIGHT KEY LEFT KEYON_OFF GND GND 60
LED_BLUE# R403 NEW ADD CIRCUIT FOR 4 LED 10K 1/16W 04/5 RP402 10K 1/16W +5V +3.3V

CN14 CONN

C405 NC GND
JP403,JP404 Package JP403 JP404

4.7K 1/16W 2 1

600 OHM 600 OHM FB401
FB402 C408 150pF C423 68pF C407 150pF
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
R404 R405 1K 1/16W NC KEY_RIGHT KEY ENTER KEY_AUTO KEYON_OFF KEY LEFT R218 1K VOL_OUT

VOL_OUT

R412 4.7K +5V

C250 22uF/16V

C422 68pF

C430 NC 3 4

CP301 NC

R422 1K 1/16W

R423 1K 1/16W STDBY RMUTE RC420 C421

STBY_OUT

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

MUTE_OUT GND

R431 NC

R429 NC

+3.3V R428 NC C415 NC LED_BLUE#
0.1uF/16V 0.1uF/16V GND GND U106F 74HCT0 1/16W 7
NC R426 4LED NC 3 Q403 NC
2003/02/21 EMI SOULATION NEW C421 & C13

R401 LED_GRN C417 NC GND

LED_GREEN
C414 NC GND NEW ADD CIRCUIT FOR 4 LED 04/09 GND

CN12 CONN 4.7K 1/16W

PBIAS BackLight On/Off Brightness P.4 +12V GND +5V
NEW ADD CIRCUIT FOR 4 LED 04/08 +3.3V +3.3V +5V 14 U106A 74HCTR402 LED_ORG 0 1/16W 7 C419 NC GND

R1/16W +5V GND C410 0.1uF/16V D401 MLL4148 RLED_GRN 330 1/16W R424 NC Title Size B NEW ADD CIRCUIT FOR 4 LED 04/09 Date: R1/16W D402 NC C409 + 150uF/25V + C411 150uF/25V C412 0.1uF/16V R1K 1/16W LED_ORG R430 NC R418 NC R417 R1/16W NC P.4 LED_ORANGE

Q402 PMBS3906 3

NEW ADD CIRCUIT FOR 4 LED 04/08

Brightness

P.4 PWM0
PWM0 R411 1K 1/16W GND LED_GRN

Q401 PMBS3906 3

R425 + C413 22uF/16V LED_BLUE# GND NC

ACER GM5120/2120

K.B AND CONNECTOR

715L1123-A

Sheet 5 of 5

Monday, May 12, 2003

VCC12V_AUDIO
VCC12V_AUDIO + C701 470uF/16V + C702 470uF/16V C703 0.1uF

R702 NC

16 VS VS 2 R701 R703 D701 10K PHONEJACK 1/16W D702 LL4148 R706 LL1/16W C709 1uF C712 100pF R712 VOL 220K C713 0.1uF 1/16W 5.6K 5.6K C710 1uF R704 R705 10K 1/16W 100 1/16W 12 10K 1/16W C704 C706 0.47uF/16V 0.47uF/16V NC CNAUDIO_SD MUTE INL INR VOLUME STBY MUTE OUTL OUTR SVR VAROUT_R VAROUT_L
U701 TDA7496L EAR_L 5 + C708 R707 1K 1/16W R708 1K 1/16W R709 NC C705 470uF/16V C707 470uF/16V + + OUT_L OUT_R EAR_R 6 6
GND GND GND GND GND GND GND

C711 100pF

470uF/16V

R710 1/16W

R711 1/16W

DC Power

VCC5V VCC12V R202 CN201 GND GND VCC12V GND VCC5V GND ON_OFF DIM VCC12V GND VCC5V GND R201 D201 4.7K 1/16W CSS14 VCC5V+ VCC5V C201 0.1uF 2 R212 4.7K 1 Q201 PMBS3904 1/16W onBACKLITE 6 47uF/16V + C210 0.1uF 1 10K 1/16W VCC5V+

D202 GS1D 3

SOT-223
U201 RT9164-25CG VI GND VO 2 C211 47uF/16V + C212 0.1uF VCC2.5 VCC2.5 4

VCPU VCPU 6

VCC5V C202 + R203 1K 1/16W 220uF/25V 0.1uF C203 + 220uF/25V C204 C205 0.1uF
R205 4.7K 4 AdjBACKLITE 1/16W 1 R204 10K 1/16W Q202 PMBSC206 1uF 3 VCC5V+

VCC3.3

SOT-263
U202 VIN ADJ AIC1084-33M 3 C213 + C214 0.1uF 1 VOUT 2 C215 47uF/16V + C216 0.1uF
VAA1 VAA1 VAA2 VAA2 VAA3 VAA4 4

VLCD VLCD 5 VCC5V VCC3.3

47uF/16V

R206 10K 1/16W

R208 10K 1/16W Q203 AO3401 R209 NC R1/16W VAA4
R207 4.7K 6 onPanel_5V/3.3V

1/16W 1 C207 0.1uF

3 Q204 PMBS3904 + C208 10uF/16V R211 10K 1/16W 2 VCC12V

VLCD_12V VLCD_12V 5

VCC12V
VCC12V_AUDIO VCC12V_AUDIO 7

R213 10K 1/16W

R215 10K 1/16W Q206 AO3407 3

R217 10K 1/16W

R219 10K 1/16W Q208 AO3407

R214 4.7K 6 onPanel_12V

1/16W 1 C217 0.1uF

R218 4.7K Q205 PMBS3904 + C218 10uF/16V R216 4.7K 1/16W VCC12V 6 onAUDIO

1/16W 1 C219 0.1uF

3 Q207 PMBS3904 + C220 10uF/16V R220 4.7K 1/16W Size B Date: 2

VCC12V Title

Sheet 2 of 7
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.

doc1

Wireless Speakers inhalmb. por radio frecuencia 59,00 85,00 111,00 55,60 46,00 64,90 44,00 62,00 26,94 42,24 37,50 57,90 49,50 91,00 64,00 220,00 182,00 299,00 208,00 199,00 83,90 39,00 144,00 158,00 45,00 50,00 53,00 55,90 70,00 78,50 87,00 97,00 119,00 66,00 86,00 93,00 105,00 99,50 58,00 74,00 95,90 65,00 95,00 69,90 86,90 81,80 110,00 112,00 123,00 138,00 120,00 134,00 108,00 73,00 228,00 156,00 ALTAV.PHILIPS ALTAV.PHILIPS ALTAV.PHILIPS ALTAV.PHILIPS ALTAV.PHILIPS ALTAV.PHILIPS ALTAV.PHILIPS ALTAV.PHILIPS X-120 STEREO X-230 2,1 X-530 X-620 6,1 Z-3 Z-3 BLACK Z-640 Z680 5,1THX Z2300 Z5300 Z5550 SPIN 45 SPIN 75 PULSE 375 PULSE 475 PULSE 675 MM2S 220 USB MM2S 221 MM2S 222 MM231 2,5,2,5,1

RIMAX PHILIPS

7,21 10,22 18,63 50,00 29,00 12,00 15,00 28,90 24,00 45,00 44,00 62,00 22,00 33,00 53,90 87,00 64,00 64,00 53,00 269,00 113,00 142,00 269,00 9.15 12.30 18,00 24.70 43.80 13,90 13,00 29.70 24,90 46,90 31,50 47,50 62,90 95,00

BEST BUY

LOGITECH
JOYBEE110 128Mb JOYBEE120 REPROD.MPRADIO FM
GRAB. VOZ FUNCIONES MD 15 HORAS
JUKEBOX ZEN NX 30 Gb JUKEBOX ZEN NX XTRA60GB JUKEBOX ZEN TOUCH 20 Gb JUKEBOX ZEN MICRO 5 Gb RHOMBA 256 Mb MUVO 64 MUVO 1,5 Mb MUVO 4 Gb MUVO 128 Mb MUVO NX128 Mb MUVO TX128 MUVO TX FM 128 MUVO TX256 MUVO TX FM 256 MUVO 256 Mb SLIM MUVO TX 512 MUVO TX FM 512

LABTEC CREATIVE

JOYBEE JOYBEE JOYBEE CD MPMb CD MPMb
CD MP3 IXA 520 CD MP3 IXA Mb CD MP3 IXA 321 256Mb CD CD CD CD CD CD CD CD CD CD

MERCURY IRIVER

MP3 MP3 MP3 MP3 MP3 MP3 MP3 MP3 MP3 MP3 IMP- 150 IMP- 400 IFP- 180T 128 MB IMP- 450 IFP- 780T IFP- 380T IMP- 550 IFP- 190TC 256 MB IFP- 790 N10
SBS 250 RETAIL SBS 260 RETAIL SBS 270 RETAIL INSPIRE P380 2,1 INSPIRE 2900 2,1 INSPIRE 3000 INSPIRE 5800 INSPIRE 5900 INSPIRE T7700 7,1 INSPIRE T7900 MEGAWORKS 250D 2,1 MEGAWORKS 550THX 5,1 I-TRIGUE 2.I-TRIGUE 2.I-TRIGUE 3450 I-TRIGUE 3500 TRAVEL SOUND TRAVEL SOUND MP3 SOPORTE ALTAVOCES CREATIVE
AMPLIA GAMA EN GREEN MEGASTORE

CD-ROM X 52 LG

GENIUS
170,00 286,00 48,00 64,90 84,00 77,00 59,40 114,00 44,50
CD MP128Mb CD MP512Mb CD MP256Mb

ENERGY SISTEM

DVD TOSHIBA x 16 OEM DVD PIONEER x 16 OEM DVD PIONEER SLOT IN DVD SONY x 16 OEM DVD SONY x16 BLACK DVD PHILIPS x16 BLACK OEM DVD PHILIPS x16 DVD LG x16 RET DVD LG x16 OEM DVD LGX16 BLACK DVD BENQ x16 RETAIL DVD BENQ x16 OEM NEGRO

CR DOM DVD

9,90 18,90 23,90 27,90 23,90 24,50 17,50 17,50 21,00 16,80 19,20 26,90 36,00 99,90 224,00 513,00 59,00 118,00 69,90 99,00 75,00 68,00

SONIDO

PSC PSC PSC PSC 705 805

SEMITOWER ATX F/300 SEMITOWER PLATA MOD 303 DELUXE SEMIT. MOD CLK. SEMIT. COOLBOX 3 VENT.TRICOLOR, 3 CAB.REDONDOS,1 SEMIT, NEGRA PRESCOT

LINKSYS-CISCO

PUNTO ACCESO WIRELESS + ROUTER 4 P (WRT54G)
WIRELESS-G USB ADAPTER (WUSB54G) WIRELESS-G NOTEBOOK ADAPTER (WPC54G)
PUNTO ACCESO (WAP54G) GAME ADAPTER WIRELESS (WGA54G) WIRELESS PCI 108Mps WMP54G-S WIRELESS PCMCIA 108Mps WPC54G-S PUNTO ACCESO WRT54G-S MEDIA ADAPTER WIRELESS (WMA11B) ADAPTADOR GYGABITE 10/(EG005W) KIT LINKSYS ADSL ROUTER MODEM +PCMCIA KIT LINKSYS ADSL ROUTER MODEM + PCI KIT LINKSYS ADSL ROUTER MODEM +USB LINKSYS+WIRELESS ADSL TAR.PCI WIRELESS TAR.PCMCIA WIRELESS
CONCEPTRONIC SWITCH EDIMAC DLINK 3COM
46,00 47,00 63,00 59,90 74,00 60,00 60,00 81,00 136,00 99,00 104,00 104,00 115,00 98,00 25,90 24,90
LOGITECH LOGITECH LOGITECH LOGITECH LOGITECH LOGITECH
MOUSE 3 BUTTON PS/2 WHEEL MOUSE WHEEL MOUSE BLACK OPTICAL MOUSE PRO WIRELESS MOUSE MINI WIRELES OPTICAL MOUSE WIRELES OPTICAL PRO PILOT WHEEL REFRESH PILOT OPTICAL MOUSE BLACK o GRIS PILOT PLUS OPTICAL PS/2 OEM PILOT CORDLESS WHEEL MOUSE OEM

MOUSE LABTEC

CORDLESS FREEDOM 2,4 WINGMAN PRECISION GAMEPAD WINGMAN RUMBLEPAD WINGMAN RUMBLEPAD II CORDLESS RUMBLEPAD CORDLESS RUMBLEPAD II
56,00 9,80 25,90 26,00 39,30 34,00
3,25 6,50 8,00 11,00 14,00 26,85 15,00 8,00 14,90 12,50 17,90 18,00 21,00 27,00 30,60 34,00 39,00 41,00 48,00 14,00 17,00 33,00 173,00 24,90 26,90 33,20 54,00 66,00 56,00
SWITCH 5 PUERTOS 10/100 SWITCH 8 PUERTOS 10/100 SWITCH 16 PUERTOS 10/100 SWITCH SWITCH SWITCH SWITCH OFFICE OFFICE OFFICE OFFICE 5 PUERTOS 10/PUERTOS 10/PUERTOS 10/PUERTOS 10/PUERTOS DUAL 10/PUERTOS DUAL 10/PUERTOS DUAL 10/PUERTOS DUAL 10/100
16,80 23,90 64,00 15,40 21,30 56,90 66,00 25,00 37,90 84,00 189,00 25,00 48,00
SWITCH 5 10/100 SWITCH 8 10/101
CONNECT CONNECT CONNECT CONNECT
DSL-200 MODEM ADSL EXT.USB DSL-904: DSL604T+6122 BUNDLE ADSL DSL-504 Router ADSL+Switch 4 puert. Fast

ROUTERS/MODEMS

CLICK OPTICAL MOUSE CORDLESS PILOT OPTICAL MOUSE BLACK o SILVER CORDLESS CLICK OPTICAL MOUSE REFRESH CORDLESS CLICK OPTICAL MOUSE CORDLESS CLICK PLUS OPTICAL MOUSE CORDLESS CLICK PLUS OPTICAL MOUSE RECHARGEABLE CORDLESS TRACKMAN WHEL CORDLESS TRACKMAN OPTICAL MINI MOUSE OPTICAL NOTEBOOK OPTICAL MOUSE PLUS CORDLESS OPTICAL MOUSE FOR NOTEBOOK USB CORDLESS PRESENTER (BLUETHOOT/USB) MOUSEMAN TRAVELER (USB/PS2) MX310 OPTICAL MOUSE MX510 OPTICAL MOUSE (USB/PS2) MX700 CORDLESS OPT. MOUSE(USB/PS2) MX900 BLUETOOTH OPTICAL USB MX1000
POR LA COMPRA DE 1 MOUSE CREATIVE

CONCEPTRONIC

29,60 99,00 59,28 56,90 141,00 99,00 71,00 116,00 88,00 94,00 59,28 82,00 71,00 92,00 22,90 19,00 58,00 71,50

 

Tags

Z7590 F64080IM WVA-105HDE-1aver DV4941P BDZ-X90 BD-C7500 Matra 720 SGH-M200 AT-50 NV-GS8 Impressa E50 ZWF16070W SDM-S73 371EL 939A785GMH 128M VGN-CR31s L SFP470X Nikon S203 GR-409GPA CD115 Garmin 215W CX8300 CMT-CP101 MS-3448GRK 2000 E Lide 30 TCE7124 SA5245BT VSX-D638-G 2520I V-325N Navigator 8 PS50A410c1 Messenger Review EW1279F GW300 Opticube LC-37HV4H F1045W GPS 120 AVC-A11XV KX-T7533NE Jungle Beat Yamaha PS3 42A456p2D UN40C6300SF 37GA5E Taunus BH-606 PRS-505-SC RY43006 PCG-Z600TEK IRC3580 Saeco Idea 2 Plus T8196A TA-DA3400ES Center AKG 659 Cooltraxx3D LH-D6530A 220 PRO P4SDR-VM CX7220 DA-3630A VRX630 5500Z AMW493 PS50B610 A12AW2-nf6 Palm M100 Radio SGH-M600 LX-300 Plus Audi S6 I915GV GT-10000 32LG4000 AEK PRO TL CB-21M17ML DTR-1R-2 SMX-K45 KVM3002 Reference CU-2E18cbpg GR-D225EK CQ1570U MY226X DMC-FZ28 Linux Elution 3 Acrobat COM 31 S HQ130 KV-80 KX-TG2422W SFP 630 S5600 Koleos TX-32E40D

 

manuel d'instructions, Guide de l'utilisateur | Manual de instrucciones, Instrucciones de uso | Bedienungsanleitung, Bedienungsanleitung | Manual de Instruções, guia do usuário | инструкция | návod na použitie, Užívateľská príručka, návod k použití | bruksanvisningen | instrukcja, podręcznik użytkownika | kullanım kılavuzu, Kullanım | kézikönyv, használati útmutató | manuale di istruzioni, istruzioni d'uso | handleiding, gebruikershandleiding

 

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