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Acer AL2023W Service Manual
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Acer AL2023W
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
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Summary of Contents for Acer AL2023W

  • Page 1 All manuals and user guides at all-guides.com Acer AL2023W 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 “as is ”. Should the programs prove defective following their purchase, the buyer (and not Acer Incorporated, its distributor, of its dealer) assumes the entire cost of all necessary servicing, repair, and any incidental or consequential damages resulting from any defect in the software.
  • Page 3 All manuals and user guides at all-guides.com Conventions The following conventions are used in this manual: Denotes actual messages that appear on Screen messages screen Gives bits and pieces of additional information Note related to the current topic. Alerts you to any damage that might result Warning 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 All manuals and user guides at all-guides.com 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 All manuals and user guides at all-guides.com 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.
  • Page 7 All manuals and user guides at all-guides.com 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.
  • Page 8: Table Of Contents

    All manuals and user guides at all-guides.com Table of contents Chapter 1 MONITOR FEATURE …………………………………………………………..9 Chapter 2 OPERATING INSTRUTION …………………………………………………….24 Chapter 3 MACHINE ASSEMBLY………………………………………………………….31 Chapter 4 TROBLE SHOOTING…………………………………………………………..44 Chapter 5 CONNECTOR INFORMATION ………………………………………………...47 Chapter 6 FRU LIST………………………………………………………………………..49 Chapter 7 SCHEMATIC DIAGRAM …………………………………………………………52 Chapter 8 POWER BOARD INFORMATION ...............61 - 8 -...
  • Page 9: Chapter 1 Monitor Feature

    All manuals and user guides at all-guides.com Chapter 1 Monitor Feature Driving system TFT Color LCD Size 20"W Pixel pitch 0.258(H) * 0.258 (V)mm Viewable angle 80/80/80/80 degree Brightness panel: 300 cd/m2(typ) Contrast Ratio 1000:1 (typ.);800:1(min.) LCD Panel Response time 5ms (Tr+Tf) Video R,G,B Analog, DVI box (optional)
  • Page 10 All manuals and user guides at all-guides.com * Power Switch * MENU / EXIT / Volume / Volume * AUTO / ENTER Switch * Contrast/brightness * Focus * Clock * H.Position * W.Position * Language * OSD Color temperature * OSD Position & Timeout * Auto Config * Input * Information...
  • Page 11 All manuals and user guides at all-guides.com Timings The product has 34 memory modes in total. 26 modes are preset and 8 modes are user definable. MODE NO. RESOLUTION 720 x 400 640 x 480 640x480 640 x 480 Dot clock(MHz) 28.321 25.175 30.24...
  • Page 12 All manuals and user guides at all-guides.com MODE NO. RESOLUTION 640 x 480 800 x 600 800 x 600 800 x 600 31.5 49.5 Dot clock(MHz) 37.500kHz 35.16kHz 37.879kHz 46.875kHz H-Total ( us ) 26.667(840 dots) 28.44(1024 dots) 26.40 (1056 dots) 21.333 (1056dots) H-Sync ( us ) 2.032 (64 dots)
  • Page 13 All manuals and user guides at all-guides.com MODE NO. RESOLUTION 800 x 600 832 x 624 1024 x 768 1024 x 768 Dot clock(MHz) 57.283 48.077kHz 49.72kHz 48.363kHz 56.48kHz H-Total ( us ) 20.80 (1040dots) 20.11(1152 dots) 20.677(1344 dots) 17.71(1328 dots) H-Sync ( us ) 2.400 ( 120 dots) 1.12(64 dots)
  • Page 14 All manuals and user guides at all-guides.com MODE NO. RESOLUTION 1024 x 768 1280 x 1024 1280 x 1024 1152 x 864 Dot clock(MHz) 78.75 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)
  • Page 15 All manuals and user guides at all-guides.com MODE NO. RESOLUTION 1280 x 960 1600 x 1200 1280 x 720 1280 x 768 Dot clock(MHz) 74.481 79.5 60.000 KHz 75.000 KHz 44.760KHz 47.776KHz H-Total ( us ) 16.667 (1800dots) 13.333 (2160 dots) 22.341 (1664dots) 20.931 (1664dots) H-Sync ( us )
  • Page 16 All manuals and user guides at all-guides.com MODE NO. RESOLUTION 1280 x 768 1360 x 768 1440 x 900 1440 x 900 Dot clock(MHz) 102.25 85.5 106.5 136.75 60.289KHz 47.712KHz 55.935KHz 70.635KHz H-Total ( us ) 16.587 (1696dots) 20.959 (1792dots) 17.878 (1904dots) 14.157 (1936dots) H-Sync ( us )
  • Page 17 All manuals and user guides at all-guides.com MODE NO. RESOLUTION 1680 x 1050 848 x 480 Dot clock(MHz) 146.25 33.75 65.29 KHz 31.02 KHz H-Total ( us ) 15.316 (2240 dots) 32.237 (1088 dots) H-Sync ( us ) 1.203 ( 176 dots) 3.319 (112 dots) H-B-P ( us ) 1.915 (280 dots)
  • Page 18 All manuals and user guides at all-guides.com Monitor block diagram Main Board LVA0P LVA0P GNDR GNDR LVA0M LVA0M PC5V LVA1P LVA1P GNDG GNDG LVA1M LVA1M LVA2P LVA2P GNDB GNDB LVA2M LVA2M LVACKP LVAC VSYNC VSYNC LVACKM LVAC PC5V HSYNC HSYNC LVA3P LVA3P LVA3M...
  • Page 19 All manuals and user guides at all-guides.com PCB LAYOUT Main Board - 19 -...
  • Page 20 All manuals and user guides at all-guides.com Button Board - 20 -...
  • Page 21 All manuals and user guides at all-guides.com Power Board...
  • Page 22 All manuals and user guides at all-guides.com...
  • Page 23 All manuals and user guides at all-guides.com...
  • Page 24: Chapter 2 Operating Instrution

    All manuals and user guides at all-guides.com 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. * Adjusting display settings External Controls Power on/off...
  • Page 25 All manuals and user guides at all-guides.com OSD menu Contrast: This adjusts dark and light shades of color relative to each other. Brightness: This adjusts the brightness of the picture on the screen. Focus: This removes any horizontal distortion and makes the picture clear and sharp.
  • Page 26 All manuals and user guides at all-guides.com Language for Asia: Select the OSD menu language. Select from English, German, Spanish, Simplified Chinese, Traditional Chinese, French, Italian, and Japanese. Language for EMEA: Select the OSD menu language. Select from English, German, Spanish, Russia, Nederlands, French, Italian, and Finnish.
  • Page 27 All manuals and user guides at all-guides.com Information: This shows information about the screen. This page only be visible in factory mode R,G,B OFFSET : Adjust current RGB cut off level R,G,B GAIN : Adjust current RGB Driver value. SPREAD : Adjust chip set internal frequency spread effect for EMI testing.
  • Page 28 All manuals and user guides at all-guides.com Acer e -Color management Brightness Contrast User Text Standard Graphics Movie Uživatelský Filmový Textový Standardní Grafický režim režim režim režim režim...
  • Page 29 All manuals and user guides at all-guides.com LED Definition The system equips one dual color (green/amber) led to indict system status and defined as bellows : LED Color System Status System in normal operation mode Green Amber System in power-saving mode Dark System in power-off mode LOGO :...
  • Page 30 All manuals and user guides at all-guides.com 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).
  • Page 31: Chapter 3 Machine Assembly

    All manuals and user guides at all-guides.com Chapter 3 Machine assembly This chapter contains step-by-step procedures on how to assemble the monitor for maintenance and trouble shooting 1. The screws for the different components vary in size. During the disassembly process, group the NOTE : screws with the corresponding to avoid mismatch when putting back the components.
  • Page 32 All manuals and user guides at all-guides.com Real View: Top View: - 32 -...
  • Page 33 All manuals and user guides at all-guides.com Side View: (unit : mm ) - 33 -...
  • Page 34 All manuals and user guides at all-guides.com Assembly process PICTURE DESCRIPTION CHECKING THE FOAM CUSHION AND PUT IT TO THE PRODUCTION LINE CHECKING THE SHIELDING AND PUT IT TO THE PRODUCTION LINE PUT 1*PCS FLOW CARD TO PRODUCTION LINE GET THE MAIN BOARD AND CHECKING CHECKING THE LVDS CABLE AND INSERT IT TO THE SINK OF MAIN BOARD CHECKING THE BUTTON BOARD CABLE AND...
  • Page 35 All manuals and user guides at all-guides.com CHECKING THE POWER BOARD AND SCAN THE S/N AND P/B OF FLOW CODE. CHANGE THE JUMPER NUMBER OF P/B ACCORDING PANEL CONNECT THE P/B AND JUMPER CABLE WITH COLLOID MARK THE LOCATION AS LEFT SHOW WITH COLOR PEN PUT THE P/B TO THE PRODUCTION LINE GET THE SPEAKER AND CHECKING...
  • Page 36 All manuals and user guides at all-guides.com LOCK UP 3*PCS SCREWS TO THE LOCATION OF MAIN BOARD LOCK UP 1*PCS SCREW(M4*8-B) TO THE LOCATION OF POWER BOARD LOCK UP 3*PCS SCREWS TO THE LOCATION OF POWER BOARD AS LEFT SHOW GET THE MYLAR OF P/B AND INSERT IT TO THE SHIELDING OF P/B TEAR OFF THE PACKING OF PANEL...
  • Page 37 All manuals and user guides at all-guides.com TEAR OFF THE PROTECT FILM OF PANEL AND CHECKING WHETHER DIRTY AND SCRAPE STICK PROTECT FILM TO PANEL TURN OFF IT AND TEAR OFF PLASTIC FILM PUT 1*PCS FLOW CODE TO THE PANEL SCAN THE FLOW CODE, S/N CODE AND PANEL GET THE RIGHT BRACKET AND CHECKING PUT THE RIGHT BRACKET TO THE LEFTSIDE...
  • Page 38 All manuals and user guides at all-guides.com GET THE LEFT BRACKET AND PUT IT THE RIGHTSIDE, LOCK UP 2*PCS SCREWS TO FIX IT TURN OVER IT AND TEAR OFF THE PROTECT FILM GET THE BEZEL AND CHECKING PUT THE BEZEL TO THE PANEL STICK PROTECT FILM TO THE BEZEL TURN OVER IT SCAN THE S/N CODE AND MAIN BOARD CODE...
  • Page 39 All manuals and user guides at all-guides.com LOCK UP 3*PCS SCREWS TO FIX THE LEFTSIDE OF BEZEL TEAR OFF THE PROTECT FILM AND RECLAIM PUT THE SHIELDING TO THE LEFT AND RIGHT BRACKETS INSERT THE LCD CABLE TO THE SINK OF PANEL STICK 1*PCS ADHESIVE TAPE ON THE LCD CABLE...
  • Page 40 All manuals and user guides at all-guides.com PUT THE LEFT AND RIGHT SPEAKERS TO THE LOCATION OF BEZEL INSERT THE BUTTON BOARD CABLE TO THE JACK OF B/B GET THE CARD OF B/B AND STICK 1*PCS ADHESIVE TAPE CHECKING THE SPEAKER LOCK UP 2*PCS SCREWS TO FIX THE RIGHT SPEAKER LOCK UP 2*PCS SCREWS TO FIX THE LEFT...
  • Page 41 All manuals and user guides at all-guides.com INSERT THE UPSIDE LAMP CABLE INSERT THE DOWNSIDE LAMP CABLE CHECKING THE LAMP CABLE WHETHER SETTLED WITH THE TOOLS STICK 2*PCS AL FOIL(50*40) BETWEEN THE PANEL AND SHIELDING SETTLED THE AL FOIL BY HANDS CHECKING THE AL FOIL AND ADHESIVE TAPE WHETHER SETTLED CHECKING THE B/B AND SPEAKER CABLE...
  • Page 42 All manuals and user guides at all-guides.com CHECKING THE REAR COVER PUT THE REAR COVER TO THE BEZEL STICK 1*PCS FLOW CARD TO THE LOCATION OF REAR COVER CHECKING THE REAR COVER WHETHER SETTLED LOCK UP 2*PCS SCREWS TO FIX THE REAR COVER GET THE STAND NECK AND PUT IT TO THE PRODUCTION LINE...
  • Page 43 All manuals and user guides at all-guides.com CHECING THE SCREWS ON THE REAR COVER WHETHER UNLOCKED PUT THE STAND NECK TO THE LOCATION OF REAR COVER LOCK UP 4*PCS SCREWS ON THE STAND NECK INSERT THE VGA SIGNAL CABLE TO THE SINK OF LCD GET THE BASE AND PUT IT TO THE STAND NECK...
  • Page 44: Chapter 4 Troble Shooting

    All manuals and user guides at all-guides.com Chapter 4 TROUBLE SHOOTING This chapter provides trouble shooting information for AL2023W 1. No Power No Power Check CN1 Change +12V and +5V Power Board Check Short Of Main Board Check D1=1.8V U1 out=3.3V...
  • Page 45 All manuals and user guides at all-guides.com 2. Missing Color Missing Color Change Check VGA Cable Cable Check R15,R18,R23 Change R15,R18,R23 Check CN5 Change U4 or CN2 Cable LVDS Signal or Panel Adjustment Check OSD Change R/G/B Color R/G/B Gain Panel - 45 -...
  • Page 46 All manuals and user guides at all-guides.com 3. Always show “NO SIGNEL” “NO SIGNEL” Change Check VGA Cable Cable VGA Check Change U4 C23,C24,R26,R2 Change R25,R27,L8,R26 ,R28 C23,C24 - 46 -...
  • Page 47: Chapter 5 Connector Information

    All manuals and user guides at all-guides.com Chapter 5 Connector Information Phonejack stereo PIN1. AC power cord : CEE22 typed connector PIN2. Audio cable PIN3. Audio : Line-in receptacle Video signal connector 15P Mini D-Sub connector x 1 DB15HD SIGNAL MNEMO Red Video Green Video...
  • Page 48 All manuals and user guides at all-guides.com DVI-D connector 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 Ground (return for +5 V and H/V sync) Hot plug detect...
  • Page 49: Chapter 6 Fru List

    Acer office to order FRU parts repair and service of customer machines. NOTE: To scrap or to return the defective parts, you should follow the local government ordinance or regulations on how best to dispose it, or follow the rules set by your regional Acer office on how to return it.
  • Page 50 All manuals and user guides at all-guides.com...
  • Page 51 All manuals and user guides at all-guides.com Part Number of Exploded View Item Part Number Part Description Q'TY Item Part Number Part Descripti EAW0TB01011 LCD BEZEL W0TB-S W0TB DDL0TDBU000 CABLE MB-B MM30030IBJ4 SCREW M3*3-I-NI FAW0TB01011 LCD BKT-L W AAM201EW121 LCD (TFT)20*M201EW02 V8 DDM0TWLC010 CABLE LVDS FAW0TB02018...
  • Page 52: Chapter 7 Schematic Diagram

    All manuals and user guides at all-guides.com Chap SCHEMATIC DIAGRAM Main Board...
  • Page 53 All manuals and user guides at all-guides.com 5DVCC 5DVCC CONN 4x2-R R1,L1 FUSE1 VCC12 3DVCC_1 3DVCC 0.1u/6 AP1117 0 ohm/6 3DVCC VOUT CX201209805/8 0/ML25 3DVCC 3DVCC 2005/10/03 0 ohm/6 10K/6 1K/6 VRMT MMST3906 U1-1 10K/6 VOUT TO252 package 10K/6/NC U1與U1-1共同layout 3DVCC AIC1117CY 1K/6...
  • Page 54 All manuals and user guides at all-guides.com 2005/11/08 3DVCC MCU_VCC Reset circuit 10K/6 3DVCC 10K/6 NC/1U/16V/6 3DVCC LED_G 4.7K/6 MMST3906 4.7K/6 NC/82K/6 LED_R 4.7K/6 MCU_RST MMST3906 MCU_RST R164 *Co-lay RTD2553V/RTD2525L note: 0 ohm/6 NC/0 ohm/6 MENU 1K/6 NC/DAN202U 1K/6 R164 1K/6 DOWN 1K/6...
  • Page 55 All manuals and user guides at all-guides.com PAGE1 VGA FCB1608C-190T03/6 RED+IN 100/6 0.047u/6 INPUT DDC_SDA 10pF/6 RED-IN 75/6/F 100/6 0.047u/6 RED+IN RED-IN DDC_SDA GREEN+IN FCB1608C-190T03/6 GREEN-IN GREEN+IN 100/6 0.047u/6 IN-H BLUE+IN BLUE-IN IN-V DSUB_5V 10pF/6 DSUB_5V DDC_SCL GREEN-IN 75/6/F 100/6 0.047u/6 100/6 0.047u/6...
  • Page 56 All manuals and user guides at all-guides.com Closed to Scaler 3DVCC R3.3DVCC 600/CX601T02001/8 NC / 22pF/6 3DVCC NC/24.576MHz NC/6 0.1u/6 0.1u/6 0.1u/6 0.1u/6 NC / 22pF/6 100uF/16V 0 ohm/6 M512_XOUT DGND R1.8DVCC Closed to Crystal When RTD2333, RV1= NC/RV2 = 0; MCU_VCC Otherwise, RV1 = 0/RV2 = NC NC/0/8...
  • Page 57 All manuals and user guides at all-guides.com VCC12 R142 1K/6 R143 10K/6 R144 10K/6 VOLUME AGND VCC12 VCC12 BEAD/1206 PC AUDIO-IN EC10 0.1u/6 330U/16V AGND L17 600/CX601T02001/8 L_LINE Z0415 R146 100/6 LIN_PC 0.47U/8 SPKOUTL OUTL 330U/16V R_LINE Z0416 R147 100/6 RIN_PC 0.47U/8 VAROUT_L...
  • Page 58 All manuals and user guides at all-guides.com Button Board TOUCH SWITCH 4P TOUCH SWITCH 4P MENU_O MENU TOUCH SWITCH 4P TOUCH SWITCH 4P SEL_O AUTO PWR_O RIGHT_O LEFT_O AMBER_O TOUCH SWITCH 4P TOUCH SWITCH 4P GREEN_O POWER JST 8Pin PH2.0mm H JST 8Pin PH2.0mm H TOUCH SWITCH 4P TOUCH SWITCH 4P...
  • Page 59 All manuals and user guides at all-guides.com Power Board ON/OFF IC_VCC ENSYNC ABRT OUTL DBRT VCCL OUTR COMP VCCR DBRT JP10 IC_VCC...
  • Page 60 All manuals and user guides at all-guides.com F101 CN100 LF102 TH101 C260 SW101 LF101 R260 BD101 R101 C261 R112 T101 C114 R102 D260 CY102 R113 CY104 D110 R121 R120 D240 L240 U101 11.12 Vstr Drain C235 R240 R235 D120 L120 C240 9.10 R230...
  • Page 61: Chapter 8 Power Board Information

    All manuals and user guides at all-guides.com Power Board Information Panel P/N Description Current Ty AAM201EW121 LCD(TFT)20" M201EW02 V8 FOR ACER CON GP P/B P/N Description AS05B312426 ADP/INV,FSP055-2PI02(90-264V,6.~7.5MA)GP When the lam current value 7.5mA, the j should be do picture left s...