Page 2 - Service Guide Version and Revision; Version; Initial release
2 Service Guide Version and Revision No. Version Release Date Revision History TPV Model 1 2 1.0 2.0 Dec-15-2005 Jan-04-2006 Initial release (Draft Version) Final Version TA90KAUHKGAEAP TA90KAUDBGAFACP http://www.wjel.net
Page 4 - Preface; Reorient or relocate the receiving antenna.
4 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 r...
Page 6 - Table Of Contents
6 Table Of Contents Chapter 1 Monitor Features ……………………………………… 6 Introduction ……………………………………… 7 Electrical Requirements ……………………………………… 8 LCD Monitor General Specification ……………………………………… 9 LCD Panel Specification ……………………………………… 10 Support Timing ……………………………………… 11 Block Diagram ……………………………………… 12 ...
Page 7 - Monitor Features; Introduction; Scope; Chapter 1
7 Monitor Features Introduction Scope This specification defines the requirements for the 20” MICROPROCESSOR based Multi-mode supported high resolution color LCD monitor. This monitor can be directly connected to general 15 pin D-sub VGA connector and 24 pin DVI connector. It also supports VESA DPMS...
Page 8 - Electrical Requirements; Standard Test Conditions
8 Electrical Requirements Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. Ambient light : Dark room (<1cd/m2) Viewing distance : 40 cm for LCD performance, 20 cm for LCD failures Warm up time All specifications : ＞ 30 minutes Fully...
Page 9 - LCD Monitor General Specification; RGB Analog Interface
9 LCD Monitor General Specification Panel type 20.1 inch-wide Color TFT-LCD Module M201EW01. Display size 433.44 (H) x 270.90(V) Display mode VGA : 640 × 480 (60/72/75/85 Hz) SVGA : 800 × 600 (56/60/72/75/85 Hz) XGA : 1024 × 768 (60/70/75/85 Hz) SXGA : 1280 × 1024 (60/75/85Hz) WSXGA: 1680 x 1050 (60...
Page 10 - LCD Panel Specification; Display Type active matrix color TFT LCD; Optical Specifications
10 LCD Panel Specification LCD Panel Model (AU M201EW01) Display Type active matrix color TFT LCD Resolution 1680 x 1050 Display Dot 1680(x3) x 1050 Display Area 433.44mm(H) x 270.90mm(V) Pixel Pitch 0.258mm(H) x 0.258mm(V) Display Color 16.7M (true) Lamp Frequency 50kHz(Max.) Lamp Current 6.0 mArms...
Page 11 - Supported Timing; Support Modes; range of the monitor.
11 Supported Timing Support Modes There will be 20 total support modes to accommodate the above mode and other video modes within the frequency range of the monitor. http://www.wjel.net
Page 12 - Monitor Block Diagram
12 Monitor Block Diagram The LCD monitor will contain a main board, a power board, which house the flat panel control logic, brightness control logic and DDC. The Inverter board will drive the backlight of panel. Video signal, DDC Power Board (Include: Inverter and adapter board) Flat Panel and CCFL...
Page 13 - Main Board Diagram
13 Main Board Diagram MCU W79E632 (U402) MST9251A-LF-205 (Include: ADC, OSD etc) (U401) EEPROM AT24C16AN-10SU-2.7 (U403) D-Sub Connector (CN101) EEPROM M24C02-WMN6TP (U101) RGB DB15_SDA DB15_SCL EPR_SDA EPR_SCL Panel connector (CN407) OSD Control KEY PAD Frame Memory (U303) DVI Connector (CN102) EEP...
Page 14 - Software Flow Chart
14 Software Flow Chart 1 2 N Y 5 Y N 10 Y N 12 Y N 7 Y N 6 4 3 8 9 14 11 13 Y N 15 Y N 16 17 19 Y N 18 http://www.wjel.net
Page 16 - Main Board Layout; Label Part; PHONE JACK 5PIN
16 Main Board Layout 1 Label Part No. Description CN603 88G 30211K PHONE JACK 5PIN CN602 88G 30214K PHONE JACK 5PIN CN701 88G 3041CE DC JACK 3PIN CN101 88G 35315F H D-SUB 15PIN CN102 88G 35424F H DVI CONNECTOR 24PIN X401 93G 22 53 CRYSTAL 14.318MHzHC-49U X402 93G 22 55 H 20MHZ/20PF/49US U401 56G 562...
Page 17 - Front Bezel; External Controls; Item Description Item Description; Volume
17 Front Bezel External Controls Item Description Item Description 1. >/ Volume 4. MENU/ENTER 2. </ Volume 5. Auto Adjust Key/Exit 3. Power Key/Power Indicator http://www.wjel.net
Page 18 - Rear Bezel; Item Description Item; External Adapter
18 Rear Bezel Item Description Item Description 1. D-SUB Cable 4. External Adapter 2. DC-Jack Power Cable 5. DVI Cable 3. AC Power Cord 6. Audio Cable http://www.wjel.net
Page 19 - Operating Instructions; The power cord should be connected.; Auto Adjust Key/Exit; Chapter 2
19 Operating Instructions Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the monitor. By changing these settings, the picture can be adjusted to your personal preferences. • The power cord should be connected. • Connect the video cable f...
Page 20 - Front Panel Control; NOTES
20 Front Panel Control • Power Button: Press this button to turn the monitor ON or OFF, and display the monitor’s state. • Menu / Enter: Activate OSD menu when OSD is OFF or activate/de-activate adjustment function when OSD is ON or Exit OSD menu when in Volume Adjust OSD status. • < Volume: Acti...
Page 21 - Adjusting the Picture; a. How to Adjust a Setting; Analog Input only model
21 Adjusting the Picture a. How to Adjust a Setting 1. Press the MENU-button to activate the OSD window. 2. Press <or >to select the desired function. 3. Press the MENU-button to select the function that you want to adjust. 4. Press < or >to change the settings of the current function. 5...
Page 22 - The Description For Control Function
22 b. The Description For Control Function http://www.wjel.net
Page 24 - b. The Description For OSD Message; Item Description
24 Hot-Key Menu a. Outline b. The Description For Hot-Key Function Item Operation Icon Description Volume When the OSD is closed, press Left or Right button will be Volume Hot-Key Function Volume of Audio adjustment. The Audio will be Mute when volume=0 OSD Message a. Outline b. The Description For ...
Page 25 - Logo; How To Optimize The DOS-Mode; information about its display capabilities.; operate properly, there must be a video input signal.; the mouse restores the display.; Using The Right Power Cord
25 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. It allows the monitor to inform the ho...
Page 26 - Machine Disassembly; Disassembly Procedure; The back view; Chapter 3
26 Machine Disassembly This chapter contains step-by-step procedures on how to assemble the monitor for maintenance. Disassembly Procedure The back view Chapter 3 http://www.wjel.net
Page 28 - Fig 5
28 4. Firstly, find out the two hooks position. (Fig 4) 5. Then, pry the rear cover up as arrowhead direction. (Fig 5) 6. Remove the six screws. ( Fig 6) Fig 4 Fig 5 Fig 6 http://www.wjel.net
Page 32 - Remove the two screws to loose the copper manganese wire.
32 14. Remove the two screws to loose the copper manganese wire. (Fig 14) 15. Remove the four screws and disconnect the wire harness. (Fig 15) 16. Remove the four screws. (Fig 16) Fig 14 Fig 15 Fig 16 http://www.wjel.net
Page 34 - Troubleshooting; No power; Chapter 4
34 Troubleshooting This chapter provides troubleshooting information for the AL2051W: 1. Main board No power Chapter 4 No power Press power key and look if the picture is normal Please reinsert and make sure the AC of 100-240 is normal Measure U703 PIN2=1.8V U705 PIN2=3.3V Reinsert or check the Adap...
Page 36 - White screen
36 White screen Note: 1. If Replace “MAIN-BOARD”, Please re-do “DDC-content” programmed & “WHITE-Balance”. 2. If Replace “ PWPC” only, Please re-do “ WHITE-Balance” White screen Measure Q701 base is high level? X401 oscillate waveform is normal Check Q701, Q702 is broken or CN407 solder? Check C...
Page 38 - No backlight
38 3. Inverter Board No backlight Check L805 =12V Check ON/OFF signal Check IC801 PIN5=5V+ -0.25V Check adapter board Check main board OK OK NG NG Check Q802,Q804,ZD803 circuit NG OK Check IC801 PIN18 triangular wave is normal Check R821,C821 Check IC801 PIN11, 12,19,20 End no output debug ...
Page 39 - Keypad Board
39 Keypad Board OSD is unstable or not working Is Keypad Board connecting normally ? Connect Keypad Board Is Button Switch normally ? Replace Button Switch Y N N Is Keypad Board Normally? Replace Keypad Board N Y Check Main Board http://www.wjel.net
Page 40 - Connector Information; Description; Chapter 5
40 Connector Information The following figure shows the connector locations on the monitor: 1 5 6 10 11 15 15 – Pin Color Display Signal Cable (D-sub) Pin No. Description Pin No. Description 1. Red 9. +5V 2. Green 10. Logic Ground 3. Blue 11. Monitor Ground 4. Monitor Ground 12. DDC-Serial Data 5. D...
Page 41 - FRU (Field Replaceable Unit) List; FRU parts for repair and service of customer machines.; Chapter 6
41 FRU (Field Replaceable Unit) List This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of AL2051W.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 shou...
Page 43 - Part List; Above picture show the description of the following component.; BACK COVER
43 Part List Above picture show the description of the following component. Item Picture Description Part No. HINGE COVER-F 33G4967 QW L 1 HINGE COVER-B 33G4968 QT L 2 BEZEL 34G1782AQW B 3 BACK COVER 34G1784 QU B 4 MAIN FRAME 15G8290 1 http://www.wjel.net
Page 46 - Schematic Diagram; Main Board; Chapter 7
46 Schematic Diagram Main Board AVDDA VLCD VCPU AVDDPLL B3 6.MCU onBACKLITE ST_DET2 onPANEL_5V/3.3V WR INT ALE DDC_DAT ST_DET1 RD HWRESET DDC_CLK VCPU RXDTXD AD0 AD1AD2AD3 AUDIO_SD AUDIO_MU DDC_WP onPOWER +2.5V_DMQ B4 2.POWER VLCD AdjBACKLITE onBACKLITEonPanel_5V/3.3V VCC12V_AUDIO VCPU +3.3DV1 +3.3D...
Page 53 - Power/Inverter board
