Related Manuals for Acer AL1923
Summary of Contents for Acer AL1923
- Page 1 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.tw/ 100% Recycled Paper - 1 -...
- Page 2 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.
- Page 3 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.
- Page 4 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.
- Page 5 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.
- Page 6 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.
- Page 7 SPECIAL NOTES ON LCD MONITORS The following symptoms are normal with LCD monitor and do not indicate a problem. NOTES 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.
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Page 8: Table Of Contents
Table of contents Chapter 1 MONITOR FEATURE … … … … … … … … … … … … … … … … … … … … … … .9 Chapter 2 OPERATING INSTRUTION … … … … … … … … … … … … … … … … … … … … .19 Chapter 3 MACHINE ASSEMBLY …... -
Page 9: Chapter 1 Monitor Feature
Monitor Feature LCD Panel Input Display Color Maximum Dot Clock ® Max Resolution Driving system TFT Color LCD Size 19" Pixel pitch 0.294 mm AU panel 8ms Viewable angle 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) AUO 8ms:270cd/m Samsung 8ms: 300 cd/m CPT 8ms:250 cd/m... - Page 10 Plug & Play EPA ENERGY STAY Audio output Input Connector Input Video Signal Screen Size (Active) Power Source Environmental Considerations Weight (N.W.) Dimension External Controls Switch Regulatory Compliance VESA DDC2B ON Mode <40W OFF Mode <2W Rated Power 2.0W rms(Per channel) D-Sub, DVI-D Analog : 0.7Vp-p,75OHM Horizontal : 337.9mm...
- Page 11 Timings The product has 26 memory modes in total. 16 modes are preset and 10 modes are user definable. MODE NO. RESOLUTION 720 x 400 Dot clock(MHz) 31.469kHz H-Total ( us ) 31.78(900dots) H-Sync ( us ) 3.813(108dots) H-B-P ( us ) 1.907(54dots) H-Active ( us ) 25.42(720dots)
- Page 12 H-B-P ( us ) 3.810 (120 dots) H-Active ( us ) 20.317 (640 dots) H-F-P ( us ) 0.508 (16 dots) 75Hz (75) V-Total (ms ) 13.333 (500 lines) 17.78(625 lines) V-Sync ( ms ) 0.080 (3 lines) V-B-P (ms ) 0.427 (16 lines) V-Active ( ms ) 12.80 (480 lines)
- Page 13 MODE NO. RESOLUTION 1024 x 768 Dot clock(MHz) 78.75 60.02kHz 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) H-B-P ( us ) 2.23 (176 dots) H-Active ( us ) 13.00 (1024 dots) 11.852 (1280 dots) 9.481 (1280dots) 10.667(1152 dots) H-F-P ( us ) 0.20 (16 dots)
- Page 14 Monitor Block Diagram - 14 -...
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Page 17: Operating Instructions
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 Function UP/ PLUS DOWN / MINUS AUTO Power on/off... - Page 18 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...
- Page 19 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.
- Page 20 LED Definition The system equips one dual color (blue/amber) led to indict system status and defined as bellows : LED Color Green Amber Dark 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 &...
- Page 21 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).
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Page 22: Chapter 3 Machine Assembly
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. - Page 23 Real View : Top View : - 25 -...
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Page 24: Exploded View
Side View : ( unit : mm ) Exploded view - 26 -... - Page 26 Assembly process Picture Jumper value set as 7.5mA Description 1. [GET PCB SHIELD AND PUT IT IN THE MIDDLE OF CONVEYER] 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.
- Page 27 1. INSERT SPEAKER CABLE IN M/B CONNECTOR 2. GET M/B AND ASSEMBLE IT WITH POWER/B,THEN ASSEMBLE THEM IN PCB SHIELD 1. FASTEN 1*PCS SCREW(M 4*8-B) IN P/B 2. FASTEN 2*PCS SCREW(M 3*6-T) IN P/B FASTEN 2*PCS SCREW(M 3*6-T) IN 1. FETCH POWER/B MYLAR PUT IT ON SHIELD AND FASTEN 1*PCS SCREW(M 3*6-T 2.
- Page 28 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.
- Page 29 - 30 - 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.
- Page 30 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.
- Page 31 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 INSERT BUTTON CABLE INTO BUTTON PUT THE SPEAKER AT THE APPOINTED PLACE...
- Page 32 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.
- Page 33 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.
- Page 34 AT FIRST CHECK IF 2*PCS SCREW IN THE COVER IS LOST 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.
- Page 35 Trouble Shooting 1. No Power Change Power Board Check Short Of Main Board Change U13,U12 Change X1 or Change U7 or Change U7 RUN Software No Power Check CN7 +12V and +5V Check U13=1.8V U12=3.3V Check X1=14.318MHz Check U7 Pin 1,2,5,6 Clock Check Key Board...
- Page 36 2. Missing Color Change Cable Change R9,R11,R12, Change U4 or CN5 Cable or Panel Adjustment R/G/B Color Missing Color Check VGA or DVI Cable Check R9,R11,R12 Check CN5 LVDS Signal Check OSD R/G/B Gain Change Panel...
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Page 38: Chapter 5 Connector Information
Connector Information Phonejack stereo PIN1. AC power cord PIN2. Audio cable PIN3. Audio The PIN assignment of the 15 pin mini D-SUB connector / cable is as follows: : CEE22 typed connector : Line-in receptacle - 39- Chapter 5 MNEM SIGNAL Red Video Green Video... - Page 39 The PIN assignment of the 24 pin DVI D connector / cable is as follows: Signal TMDS data2- TMDS data2+ TMDS data2 shield DDC clock DDC data Not connected TMDS data1- TMDS data1+ TMDS data1 shield PIN Signal Ground (return for +5 V and H/V sync) Hot plug detect TMDS data0-...
- Page 40 NOTE: To scrap or to return the defective parts, you should follow the local government ordinance or regulations on how best to dispose it, or follow the rules set by your regional Acer office on how to return it.
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Page 41: Chapter 7 Schematic Diagram
Chapter 7 SCHEMATIC DIAGRAM Main Board Circuit - 42-... - Page 42 - 43 -...
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- Page 47 Power Board Current set Information Chapter 8 - 48 - 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 7.5mA, the jumper should be done...