Acer AL1923 (Dual) Service Guide Service guide files and updates are available on the CSD web: for more information, Please refer to http://csd.acer.com.
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.
Conventions The following conventions are used in this manual: Screen messages Denotes actual messages that appear on screen Note Gives bits and pieces of additional information related to the current topic. Warning Alerts you to any damage that might result from doing or not doing specific actions. Caution Gives precautionary measures to avoid possible hardware or software problems. Important 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 BASICCONFIGURATION decided for Acer’s “global” product offering. To better fit local market requirements and enhance product competitiveness, your regional office MAY have decided to extend the functionality of a machine (e.g. add-on card, modem, or extra memory capability).
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.
PRECAUTIONS l Do not use the monitor near water, e.g. near a bathtub, washbowl, kitchen sink, laundry tub, Swimming pool or in a wet basement. l Do not place the monitor on an unstable trolley, stand, or table. If the monitor falls, it can injure a person and cause serious damage to the appliance. Use only a trolley or stand recommended by the manufacture or sold with the monitor. If you mount the monitor on a wall or shelf, use a mounting kit approved by the manufacture and follow the kit instructions.
SPECIAL NOTES ON LCD MONITORS The following symptoms are normal with LCD monitor and do not indicate a problem. NOTES l l l l Due to the nature of the fluorescent light, the screen may flicker during initial use. Turn off the Power Switch and then turn it on again to make sure the flicker disappears. You may find slightly uneven brightness in 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.
Table of contents Chapter 1 MONITOR FEATURE … … … … … … … … … … … … … … … … … … … … … … .9 Chapter 2 OPERATING INSTRUTION … … … … … … … … … … … … … … … … … … … … .19 Chapter 3 MACHINE ASSEMBLY … … … … … … … … … … … … … … … … … … … … … . .24 Chapter 4 TROUBLE SHOOTING … … … … … … … … … … … … … … … … … … … … … ..36 Chapter 5 CONNECTOR INFORMATION … … … … … … … … … … … … … … … … … … 39 Chapter 6 FRU LIST … … … … … … … … … … … … … … … … … … … … … … … … … … … ...
Chapter 1 Monitor Feature Driving system TFT Color LCD Size 19" Pixel pitch 0.294 mm Viewable angle AU panel 8ms :70/60/70/70 degree(typ) LG panel-8ms(TLB1/TLB4):70/70/70/70 degree(typ) Samsung-8ms:75/60/75/75 degree(typ) CPT panel-8ms:65/65/70/70 degree(typ) HSDpanel-8ms:TBD Brightness LG panel-8ms(TLB1/TLB4) :300 cd/m2(typ.) AUO 8ms:270cd/m2(typ.) Samsung 8ms: 300 cd/m2(typ.) CPT 8ms:250 cd/m2(typ.) HSD 12ms:250 cd/m2 (typ.
Plug & Play VESA DDC2B EPA ENERGY STAY ON Mode <40W OFF Mode <2W Audio output Rated Power 2.0W rms(Per channel) Input Connector D-Sub, DVI-D Input Video Signal Analog : 0.7Vp-p,75OHM Horizontal : 337.9mm Screen Size (Active) Vertical : 270.3mm Power Source 90~264 Vac, 47~63HZ Environmental Operating Temp : 5 to 40 degree ; Considerations Storage Temp : -20 to 60 degree ; Operating Humidity : 10% to 85% Weight (N.W.
Timings The product has 26 memory modes in total. 16 modes are preset and 10 modes are user definable. MODE NO. 1 2 3 4 RESOLUTION 720 x 400 640 x 480 640x480 640 x 480 28.321 25.175 30.24 31.5 fh 31.469kHz 31.469kHz 35.0kHz 37.861kHz H-Total ( us ) 31.78(900dots) H-Sync ( us ) 3.813(108dots) 3.813 (96 dots) 2.116 (64 dots) 1.270(40 dots) H-B-P ( us ) 1.907(54dots) 1.907 (48 dots) 3.175 (96 dots) 4.064(128 dots) H-Active ( us ) 25.42(720dots) H-F-P ( us ) 0.636(18dots) 0.
H-B-P ( us ) 3.810 (120 dots) 3.56(128 dots) H-Active ( us ) 20.317 (640 dots) 22.22(800 dots) H-F-P ( us ) 0.508 (16 dots) 0.67(24 dots) 1.000 (40 dots) fv 75Hz (75) 56.25 60Hz (60.316) V-Total (ms ) 13.333 (500 lines) 17.78(625 lines) 2.200 ( 88 dots) 3.232 (160 dots) 20.00 ( 800 dots) 16.162 (800 dots) 0.323 (16 dots) 75Hz (75.000) 16.58 (628 lines) 13.333 (625lines) V-Sync ( ms ) 0.080 (3 lines) 0.06(2 lines) 0.106 (4 lines) 0.064 (3 V-B-P (ms ) 0.427 (16 lines) 0.
MODE NO. 13 14 15 16 RESOLUTION 1024 x 768 1280 x 1024 1280 x 1024 1152 x 864 Dot clock(MHz) 78.75 108 135 108 fh 60.02kHz 63.981kHz 79.976KHz 67.5 KHz H-Total ( us ) 16.66(1312 dots) 15.630 (1688 dots) 12.504 (1688 dots) 14.815(1600 dots) H-Sync ( us ) 1.22 (96 dots) 1.037 (112 dots) 1.067 (144 dots) 1.185(128 dots) H-B-P ( us ) 2.23 (176 dots) 2.296 (248 dots) 1.837 (248 dots) 2.370(256 dots) H-Active ( us ) 13.00 (1024 dots) 11.852 (1280 dots) 9.481 (1280dots) 10.
Monitor Block Diagram - 14 -
Chapter 2 OPERATING INSTRUCTIONS Front Panel Definition This Section defines the front panel User Interface for Led Indictor and Key function. Key Definition: There are five keys defined in this system and described bellows. External Controls Power on/off ?1 POWER Blue: power on Orange: in sleep mode ?2 OSD Function Press to view OSD. Press again to exit a selection in OSD. ?3 If OSD is active, press to select or adjust OSD options.
OSD Menu Picture Brightness: This adjusts the brightness of the picture on the screen. Contrast: This adjusts dark and light shades of color relative to each other to achieve a comfortable contrast. Color temp. : There are three ways of adjusting color: Warm (Reddish white) Cool (Bluish white) User : You can adjust the colors red, green and blue to the intensity you desire. Focus: This removes any horizontal distortion and makes the picture clear and sharp.
Option Auto Config. : System choose signal “Analog or Digital” Reset: Recall to default settings. Information: This shows brief information on the screen. Setting Language: Select the OSD menu language from English, French, German, Italian, Spanish, Simplified Chinese, Traditional Chinese, Japanese and Russian. OSD H. Position OSD V. Position OSD Time-out This changes the position of the OSD window on the screen and staying time.
LED Definition The system equips one dual color (blue/amber) led to indict system status and defined as bellows : LED Color System Status Green System in normal operation mode Amber System in power-saving mode Dark System in power-off mode LOGO : When the monitor is power on, the LOGO will be showed in the center, and disappear slowly. HOW TO OPTIMIZE THE DOS-MODE Plug and play Plug & play DDC2B feature This monitor is equipped with VESA DDC2B capabilities according to the VESA DDC STANDARD.
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.
Chapter 3 Machine assembly This chapter contains step-by-step procedures on how to assemble the monitor for maintenance and trouble shooting NOTE : 1. The screws for the different components vary in size. During the disassembly process, group the screws with the corresponding to avoid mismatch when putting back the components. 2. Note : The monitor surface is susceptible to scratching! Therefore, lay the monitor on a soft surface when mounting or removing the base. 3. Wear gloves.
Real View : Top View : - 25 -
Side View : ( unit : mm ) Exploded view - 26 -
Assembly process Picture Description 1. [GET PCB SHIELD AND PUT IT IN THE MIDDLE OF CONVEYER] 1 1. [GET M/B AND LCD CABLE,THEN INSERT LCD CABLE IN M/B CONNECTOR] 2. [GET BUTTON CABLE,THEN INSERT IT INTO M/B CONNECTOR] 1. GET POWER/B AND INSERT JUMPER IN THE APPOINTED PLACE OF JP10 AT 2. GET AGGLUTINANT TO CONNECT THE JUMPER AND POWER/B 3. MARK DOT IN THE PANE MARK OF POWER/B AS PICTURE SHOWS Jumper value set as 7.
1. INSERT SPEAKER CABLE IN M/B 1 CONNECTOR 2. GET M/B AND ASSEMBLE IT WITH POWER/B,THEN ASSEMBLE THEM IN PCB SHIELD 2 1. FASTEN 1*PCS SCREW(M 4*8-B) IN P/B 2. FASTEN 2*PCS SCREW(M 3*6-T) IN P/B 3. FASTEN 2*PCS SCREW(M 3*6-T) IN M/B 1. FETCH POWER/B MYLAR PUT IT ON SHIELD AND FASTEN 1*PCS SCREW(M 3*6-T 2. FASTEN 1*PCS SCREW(M 3*6-T) IN M/B 3.
1. GET THE SHIELD AT FRONTAGE OF THE CONVEYER 2. GET PANEL AND PUT IT ON THE CONVEYER, THEN TEAR OFF THE INCOMING TAPE 1. UNCOVER PANEL PROTECTIVE FILM AND INSPECT IF PANEL IS DIRTY OR SCRATCHED 2. PASTE TYPE ON THE PROTECTIVE FILM TO FASTEN IT 3.
1. FETCH TRAVEL CARD, TEAR OFF 1*PCS S/N FROM TRAVEL CARD AND PASTE IT ON THE PANEL BACK,THEN SCAN S/N AND PANEL CODE 2. GET LEFT BKT AND LOCK 2*PCS SCREW(M3*5-I) TO FASTEN IT AND PANEL 1. GET RIGHT BKT AND LOCK 2*PCS SCREW(M3*5-I) TO FASTEN IT AND PANEL 2. TURN LCD AND TEAR OFF PROTECTIVE FILM 1. GET BEZEL AND CHECK ITS APPEARANCE 1 2. ASSEMBLE BEZEL ON PANEL,THEN PASTE TYPE TO FASTEN PROTECTIVE FILM ON THE BEZEL 3.
1. SCAN S/N AND POWER CODE 2. FASTEN BKT AND BEZEL IN THE RIGHT SIDE WITH SCREW 3*PCS 1. SCAN S/N AND M/B CODE 2. FASTEN BKT AND BEZEL IN THE LEFT SIDE WITH SCREW 3*PCS 3. TURN LCD 1. FETCH BUTTON/B AND INSERT IT INTO BEZEL 2.
1. GET SHIELD ON THE BKT R/L 2. INSERT LCD CABLE INTO PANEL CONNECTOR 3. STICK 1*PCS YELLOW TAPE TO FASTEN LCD CABLE 4. TRIM WIRES AND ASSEMBLE SHIELDING IN RIGHT POSITION 1. LOCK 4*PCS SCREW(M3*6-T) TO FASTEN PCB SHIELD 1. INSERT BUTTON CABLE INTO BUTTON 2. PUT THE SPEAKER AT THE APPOINTED PLACE 3.
1. FASTEN 2*PCS IO-NUT IN THE VGA JOINT 2. FASTEN 2*PCS IO-NUT IN THE M/B JOINT 3. INSERT CCFT CABLE IN POWER/B 1. STICK AL FOIL AT THE APPOINTED PLACE TO FASTEN THE CABLE 2. STICK 2*PCS AL FOIL AT THE APPOINTED PLACE 1. STICK 1*PCS AL FOIL AT THE APPOINTED PLACE 2.
1. CHECK THE Q’TY AND LOCATION OF AL FOIL 1. GET LCD COVER AND INSPECT ITS APPEARANCE 2. ASSEMBLE LCD COVER TO BEZEL 3. STICK 1*PCS TAPE AT THE APPOINTED PLACE 1. FETCH TRAVEL CARD, TEAR OFF 1*PCS APPOINTED S/N FROM TRAVEL CARD AND PASTE IT ON THE COVER 2. LOCK 2*PCS SCREW (F3*8-B) TO FASTEN BEZEL AND LCD COVER 3.
1. AT FIRST CHECK IF 2*PCS SCREW IN THE COVER IS LOST 2. LOCK 4*PCS SCREW (M4*10-B) TO FASTEN STAND NECK 1. INSERT VGA CABLE INTO VGA CONNECTOR AND INSERT POWER CORD INTO POWER CONNECTOR 2. GET BASE FIXTRUE AND ASSEMBLE IT TO STAND NECK. 1. INSERT DVI CABLE INTO DVI CONNECTOR AND INSERT POWER CORD INTO POWER CONNECTOR 2.
Trouble Shooting 1. No Power No Power NO Change Power Board Check CN7 +12V and +5V No Yes Check Short Of Main Board Check U13=1.8V U12=3.3V NO Change U13,U12 Yes Change X1 or U4 NO Check X1=14.
2.
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Chapter 5 Connector Information Phonejack stereo PIN1. AC power cord : CEE22 typed connector PIN2. Audio cable PIN3.
The PIN assignment of the 24 pin DVI D connector / cable is as follows: PIN Signal PIN Signal 1 TMDS data2- 13 NC 2 TMDS data2+ 14 +5V 3 TMDS data2 shield 15 Ground (return for +5 V and H/V sync) 4 NC 16 Hot plug detect 5 NC 17 TMDS data0- 6 DDC clock 18 TMDS data0+ 7 DDC data 19 TMDS data0 shield 8 Not connected 20 NC 9 TMDS data1- 21 NC 10 TMDS data1+ 22 TMDS clock shield 11 TMDS data1 shield 23 TMDS clock+ 12 NC 24 TMDS clock- - 40-
Chapter 6 FRU (Field Replaceable Unit) list This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of AL1511. Refer to this chapter whenever ordering for parts to repair or for RMA (Return Merchandise Authorization). NOTE : Please note WHEN ORDERING FRU PARTS, that you should check the most up-to-date information available on your regional web or channel(http://aicsl.acer.com.tw/spl/).
Chapter 7 SCHEMATIC DIAGRAM Main Board Circuit - 42-
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Chapter 8 Power Board Current set Information When the lamp current value is 6.5mA, the jumper should be done as the picture left shows When the lamp current value is 7.0mA, the jumper should be done as the picture left shows When the lamp current value is 7.
