Acer AL2023 Service Manual
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Acer AL2023 Service Manual

Acer AL2023 Service Manual

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See also: User Manual
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 AL2023

  • Page 1 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 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 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: Special Notes On Lcd Monitors

    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

    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

    Monitor Feature LCD Panel Input Display Color Maximum Dot Clock Max Resolution Plug & Play EPA ENERGY STAR Audio output Input Connector Input Video Signal Screen Size (Active) Power Source Environmental Considerations Weight (N.W.) Dimension Driving system TFT Color LCD Size 20"W Pixel pitch...
  • Page 10 Switch External Controls : Regulatory Compliance * Power Switch * MENU / EXIT / Volume / Volume * AUTO / ENTER * Contrast/brightness * Focus * Clock * H.Position * W.Position * Language * OSD Color temperature * OSD Position & Timeout * Auto Config * Input * Information...
  • Page 11 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 Dot clock(MHz) 28.321 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 MODE NO. RESOLUTION 640 x 480 31.5 Dot clock(MHz) 37.500kHz H-Total ( us ) 26.667(840 dots) H-Sync ( us ) 2.032 (64 dots) 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 )
  • Page 13 MODE NO. RESOLUTION 800 x 600 Dot clock(MHz) 48.077kHz H-Total ( us ) 20.80 (1040dots) H-Sync ( us ) 2.400 ( 120 dots) H-B-P ( us ) 1.280 (64 dots) H-Active ( us ) 16.00 (800 dots) H-F-P ( us ) 1.120 (56 dots) 72Hz (72.188) V-Total (ms )
  • Page 14 MODE NO. RESOLUTION 1024 x 768 Dot clock(MHz) 78.75 60.02kHz H-Total ( us ) 16.66(1312 dots) H-Sync ( us ) 1.22 (96 dots) H-B-P ( us ) 2.23 (176 dots) H-Active ( us ) 13.00 (1024 dots) H-F-P ( us ) 0.20 (16 dots) 75.03Hz V-Total (ms )
  • Page 15 MODE NO. RESOLUTION 1280 x 960 Dot clock(MHz) 60.000 KHz H-Total ( us ) 16.667 (1800dots) H-Sync ( us ) 1.037 ( 112 dots) H-B-P ( us ) 2.889 (312 dots) H-Active ( us ) 11.852 (1280 dots) H-F-P ( us ) 0.889 (96 dots) 60.00Hz V-Total (ms )
  • Page 16 MODE NO. RESOLUTION 1280 x 768 Dot clock(MHz) 102.25 60.289KHz H-Total ( us ) 16.587 (1696dots) H-Sync ( us ) 1.252 ( 128 dots) H-B-P ( us ) 2.034 (208 dots) H-Active ( us ) 12.518 (1280 dots) H-F-P ( us ) 0.782 (80 dots) 74.893Hz V-Total (ms )
  • Page 17 MODE NO. RESOLUTION 1680 x 1050 Dot clock(MHz) 146.25 65.29 KHz H-Total ( us ) 15.316 (2240 dots) H-Sync ( us ) 1.203 ( 176 dots) H-B-P ( us ) 1.915 (280 dots) H-Active ( us ) 11.487 (1680 dots) H-F-P ( us ) 0.711 (104 dots) 59.954 Hz...

  • Page 18: Monitor Block Diagram

    Monitor block diagram GNDR PC5V GNDG GNDB VSYNC PC5V HSYNC CLK+ CLK- DDCA_SDA DDCA_SCL DET_VGA DDCD_SDA DDCD_SCL DET_DVI HPD_CTRL 3.INPUT PC5V PC5V VCC12 VCTRL VCC12 on_BACKLIGHT VCC3.3 VCC1.8 Adj_BACKLIGHT VCC3.3 VCC1.8 2.POWER Main Board LVA0P GNDR LVA0M LVA1P GNDG LVA1M LVA2P GNDB LVA2M...
  • Page 19 PCB LAYOUT Main Board - 19 -...
  • Page 20 Button Board - 20 -...
  • Page 21 Power Board...

  • Page 24: Chapter 2 Operating Instrution

    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 Function Left/ Plus Right/ Plus...
  • Page 25 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. Clock: If there are any vertical stripes seen on the background of the screen, this renders them less noticeable by minimizing their size.
  • Page 26 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. OSD Settings: This changes the position of the OSD window on the screen and the staying time.
  • Page 27 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 Acer e -Color management User Text Standard Graphics Movie Uživatelský režim Brightness Contrast Textový Standardní Grafický Filmový režim režim režim režim...

  • Page 29: Led Definition

    LED Definition The system equips one dual color (green/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 30 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

    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. 2.
  • Page 32 Real View: Top View: - 32 -...
  • Page 33 Side View: (unit : mm ) - 33 -...
  • Page 34 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 INSERT IT TO SINK OF MAIN BOARD...
  • Page 35 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 INSERT THE SPEAKER TO THE SINK OF MAIN BOARD...
  • Page 36 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 PUT THE PANEL TO THE PRODUCTION LINE...
  • Page 37 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 AND LOCK UP 2*PCS SCREWS TO FIX IT...
  • Page 38 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 LOCK UP 3*PCS SCREWS TO FIX THE...
  • Page 39 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 SETTLED CABLE AND FIX SHIEDLING LOCK UP 4*PCS SCREWS TO FIX THE...
  • Page 40 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 SPEAKER...
  • Page 41 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 WHETHER SETTLED...
  • Page 42 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 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 STAND UP THE LCD INSERT THE POWER CABLE TO THE JACK AND...

  • Page 44: Chapter 4 Troble Shooting

    TROUBLE SHOOTING This chapter provides trouble shooting information for AL2023W 1. No Power Change Power Board Check Short Of Main Board Change Q3,D1,U1,D2 Change X1 Change U5 or Change U5 RUN Software Check Bottom Board No Power Check CN1 +12V and +5V Check D1=1.8V U1 out=3.3V Check...
  • Page 45 2. Missing Color Change Cable Change R15,R18,R23 Change U4 or CN2 Cable or Panel Adjustment R/G/B Color Missing Color Check VGA Cable Check R15,R18,R23 Check CN5 LVDS Signal Check OSD R/G/B Gain - 45 - Change Panel...
  • Page 46 3. Always show “NO SIGNEL” Change Cable “NO SIGNEL” Check VGA Cable VGA Check C23,C24,R26,R2 Change R25,R27,L8,R26 ,R28 C23,C24 - 46 - Change U4...

  • Page 47: Chapter 5 Connector Information

    Connector Information Phonejack stereo PIN1. AC power cord PIN2. Audio cable PIN3. Audio : Line-in receptacle Video signal connector 15P Mini D-Sub connector x 1 MNEMO : CEE22 typed connector DB15HD SIGNAL Red Video Green Video Blue Video None Ground(DDC return) Red GND Green GND Blue GND...
  • Page 48 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 TMDS data0- TMDS data0+...

  • 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 PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 51 Part Number of Exploded View Item Part Number Part Description EAW0TB01011 LCD BEZEL W0TB-S W0TB MM30030IBJ4 SCREW M3*3-I-NI AAM201EW121 LCD (TFT)20*M201EW02 V8 FAW0TB02018 LCD BKT-R W0TB FCL7TA01018 SHIELDING MYLAR L7TA FCL9TB01017 SCALAR BOARD MYLAR L9TB FAL9TB01016 POWER SHIELDING L9TB EAW0TB02018 LCD COVER W0TB FAL9TB04015 HINGE ASSY L9TB...

  • Page 52: Chapter 7 Schematic Diagram

    Chapter 7 SCHEMATIC DIAGRAM Main Board...
  • Page 53 CONN 4x2-R R1,L1 FUSE1 0.1u/6 3DVCC 3DVCC 0 ohm/6 10K/6 1K/6 MMST3906 10K/6 10K/6/NC 3DVCC 1K/6 0 ohm/6 1U/8/NC SN7002E 3DVCC NC/CX201209805/8 MMST3906 CX201209805/8 DSUB_5V 1N4148 1N4148 0.1u/6 Bus_Power 1N4148 4.7K/6 3DVCC MMST3906 4.7K/6 VCC12 AP1117 CX201209805/8 0/ML25 2005/10/03 VRMT U1-1 VOUT TO252 package...
  • Page 54 MCU_VCC Reset circuit 3DVCC NC/1U/16V/6 3DVCC 4.7K/6 NC/82K/6 MCU_RST MCU_RST R164 *Co-lay RTD2553V/RTD2525L note: 0 ohm/6 NC/0 ohm/6 NC/DAN202U RTD2525L RTD2553VH 4.7K 0 ohm R159,R160,R161,R164,R165 MCU_VCC R110 R111 R113 R114 R109 R115 R116 R117 R118 R119 R159 100/6 VOLUME R160 100/6 VBRI Hot_Plug...
  • Page 55 PAGE1 VGA INPUT RED+IN RED-IN DDC_SDA GREEN+IN GREEN-IN IN-H BLUE+IN BLUE-IN IN-V DSUB_5V DDC_SCL 3DVCC 3DVCC DAN217K/NC DAN217K/NC DAN217K/NC RED+IN GREEN+IN BLUE+IN IN-H IN-V DDC_SDA DDC_SCL Hot_Plug Z5.6/NC Z5.6/NC Z5.6/NC Z5.6/NC CN4(DUAL) RX2- RX2+ RX4- RX4+ DDC2_SCL DDC2_SCL DDC2_SDA DDC2_SDA RX1- RX1+ RX3-...
  • Page 56 Closed to Scaler NC / 22pF/6 NC/24.576MHz NC/6 NC / 22pF/6 0 ohm/6 M512_XOUT Closed to Crystal 1.8DVCC R1.8DVCC L10 600/CX601T02001/8 1.8DVCC 0.1u/6 3DVCC 600/CX601T02001/8 100uF/16V 0.1u/6 0.1u/6 3DVCC DGND 0.1u/6 0.1u/6 DPLL_VDD 4.7K/6 4.7K/6 DPLL_GND APLL_GND APLL_VDD PLL_TEST1 / TCON0 / TCON3 PLL_TEST2 / TCON1 / TCON12 TMDS_VCC TMDS_TST / PWM0 / TCON2...
  • Page 57 VOLUME PC AUDIO-IN L17 600/CX601T02001/8 L_LINE Z0415 R146 100/6 R_LINE Z0416 R147 100/6 Phone Jack L18 600/CX601T02001/8 AGND MUTE VCC12 R154 STBY STBY VCC12 R142 1K/6 R143 10K/6 R144 10K/6 AGND VCC12 VCC12 BEAD/1206 EC10 0.1u/6 330U/16V AGND LIN_PC 0.47U/8 OUTL RIN_PC 0.47U/8...

  • Page 58: Button Board

    Button Board MENU_O SEL_O PWR_O RIGHT_O LEFT_O AMBER_O GREEN_O JST 8Pin PH2.0mm H JST 8Pin PH2.0mm H TOUCH SWITCH 4P TOUCH SWITCH 4P MENU TOUCH SWITCH 4P TOUCH SWITCH 4P AUTO TOUCH SWITCH 4P TOUCH SWITCH 4P POWER TOUCH SWITCH 4P TOUCH SWITCH 4P RIGHT TOUCH SWITCH 4P...

  • Page 59: Power Board

    Power Board ON/OFF IC_VCC ENSYNC ABRT OUTL DBRT VCCL OUTR COMP VCCR DBRT JP10 IC_VCC TILE: FSP043-2PI02S (INVERTER) 3BS0128710GP P/N: Alex_Lu DESIGNER: PCB File: 43-2PI2SA0.PCB File: C:\Documents and Settings\alexlu\ size: A3 rev: 1.00 Date: 1-Mar-2006 Sheet \43-2PI2SA0.ddb - Documents\43-2PI2A0S(I).SCH 桌面 :7000P-0106 線路圖...
  • Page 60 F101 CN100 TH101 SW101 LF101 R101 R102 CY102 CY104 U101 Vstr C123 ZD121 LF102 C260 BD101 R112 T101 C114 R113 D110 R121 R120 D240 11.12 Drain R240 D120 L120 9.10 PC201B C120 CY103 R260 C263 C261 R262 D260 L240 C235 C242 R235 C240...

  • Page 61: Chapter 8 Power Board Information

    Power Board Information Panel P/N Description 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 Chapter 8 Current Type Value 7. 5mA When the lamp current value is 7.5mA, the jumper should be done as the picture left shows.

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