t ne el. w.
Service Guide Version and Revision No. Version Release Date Revision History TPV Model 1 1.0 Dec-15-2005 Initial release TA90KAUHKGAEAP (Draft Version) Jan-04-2006 Final Version TA90KAUDBGAFACP tp :// ww w. wj el. ne t 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. Disclaimer The information in this guide is subject to change without notice.
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 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).
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. Use only a trolley or stand recommended by the manufacturer or sold with the monitor. If you mount the monitor on a wall or shelf, uses a mounting kit approved by the manufacturer and follow the kit instructions.
Table Of Contents Monitor Features ……………………………………… 6 Introduction ……………………………………… 7 Electrical Requirements ……………………………………… 8 LCD Monitor General Specification ……………………………………… 9 LCD Panel Specification ……………………………………… 10 Support Timing ……………………………………… 11 Block Diagram ……………………………………… 12 Main Board Diagram ……………………………………… 13 Software Flow chart ……………………………………… 14 Main Board Layout ……………………………………… 16 Front Bezel ……………………………………… 17 Rear Bezel ……………………………………… 18 Operating Ins
Chapter 1 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 power management and plug & play function. There is a build-in stereo audio amplifier with OSD control to drive a pair of speakers.
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 All specifications : ＞30 minutes Fully functional : 5 seconds Measuring equipment : Chroma 7120 signal generator or equivalent, directly Warm up time Connected to the monitor under test.
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) 0.258 (per one triad) x 0.258 Pixels (H x V) 1680(x3) x 1050 Pixel clock 202 MHz (Max) Contrast ratio 800: 1 (Typ) Brightness 300 cd/m2 @6mA (Typ) Response time (Tr/Tf) 16 ms Display color 16.
LCD Panel Specification LCD Panel Model (AU M201EW01) Display Type active matrix color TFT LCD Resolution 1680 x 1050 1680(x3) x 1050 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 (typ) Weight 2950g (typ) ne t Display Dot Display Area Optical Specifications ht tp :// ww w. wj el.
ht tp :// ww w. wj el. ne t 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.
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. Flat Panel and CCFL Drive. CCFL backlight RS232 Connector For Power Board Main Board (Include: Inverter and white balance adjustment (Include: Audio and Keypad board) in factory mode el. ne t adapter board) AC-IN Video signal, DDC w.
Main Board Diagram Panel connector (CN407) OSD Control KEY PAD MST9251A-LF-205 MCU (Include: ADC, OSD etc) Frame W79E632 (U401) Memory (U303) RXD EPR_SCL RGB TXD H sync V sync EEPROM D-Sub Connector AT24C16AN-10SU-2.7 (CN101) DVI Connector (CN102) w. wj (U403) DVI Video Signal el.
Software Flow Chart 1 Y 2 3 N 4 N ne t 5 Y el. 6 w.
Remark: 1) MCU initializes. 2) Is the EEPROM blank? 3) Program the EEPROM by default values. 4) Get the PWM value of brightness from EEPROM. 5) Is the power key pressed? t 6) Clear all global flags. ne 7) Are the AUTO and SELECT keys pressed? el. 8) Enter factory mode. 9) Save the power key status into EEPROM. Scalar initializes. 10) In standby mode? 11) Update the lifetime of back light. w. wj Turn on the LED and set it to green color.
tp :// ww w. wj 1 el. ne t Main Board Layout Label Description 88G 30211K PHONE JACK 5PIN ht CN603 Part No. 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.
w. wj el. ne t Front Bezel Item ww External Controls Description >/ Volume 2.
Item Description D-SUB Cable 2. 3. Item Description 4. External Adapter DC-Jack Power Cable 5. DVI Cable AC Power Cord 6. Audio Cable ht tp :// ww 1. w. wj el.
Chapter 2 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 from the monitor to the video card. • Press the power button to turn on the monitor position. The power indicator will light up. Item tp :// ww w. wj el.
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. •
Adjusting the Picture a. How to Adjust a Setting 1. Press the MENU-button to activate the OSD window. 2. Press 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. el. ne t 5. To exit and save, select the exit function. If you want to adjust any other function, repeat steps 2-4. tp :// ww w.
ht tp :// ww w. wj el. ne t b.
ww :// tp ht ne el. w.
Hot-Key Menu a. Outline b. The Description For Hot-Key Function Item Operation Icon When the OSD is closed, press Left or Description Volume of Audio adjustment. The Audio will be t Volume Right button will be Volume Hot-Key ne Mute when volume=0 Function el. OSD Message ww w. wj a. Outline Auto Config When Analog signal input, if User Press Hot-Key “Auto”, will show this message, and the monitor do the auto config function. ht Please Wait Description tp Item :// b.
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 host system of its identity and, depending on the level of DDC used, communicate additional ne t information about its display capabilities. The DDC2B is a bi-directional data channel based on the I²C protocol.
Chapter 3 Machine Disassembly This chapter contains step-by-step procedures on how to assemble the monitor for maintenance. Disassembly Procedure ht tp :// ww w. wj el.
1. Remove two screws. (Fig 1) 2. Remove the hinge cover. (Fig 2) Fig 2 ht tp :// ww w. wj el. Fig 1 ne t 3. Remove the one screw.
4. Firstly, find out the two hooks position. (Fig 4) 5. Then, pry the rear cover up as arrowhead direction. (Fig 5) Fig 5 ht tp :// ww w. wj el. Fig 4 ne t 6. Remove the six screws.
7. Disconnect the wire harnesses of main board and panel, main board and power board. (Fig 7) 8. Remove four screws. (Fig 8) 9. Pry the main frame on the left to remove bezel. (Fig 9.1) Fig 8 ht tp :// ww w. wj Fig 7 el. ne t Pry the main frame on the right to remove bezel. (Fig 9.2) Fig 9.
Fig 10.1 ht tp :// ww ne w. wj el. Remove the screws for frame on the right. (Fig 10.2) t Fig 9.2 10. Remove the screws for frame on the left. (Fig 10.1) Fig 10.
11. Disconnect the wire harness for power board and lamps. (Fig 11) 12. Remove the four screws to remove the main board. (Fig 12) Fig 12 ht tp :// ww w. wj el. Fig 11 ne t 13. Remove the eight screws to remove BKT base.
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) Fig 15 ht tp :// ww w. wj el. Fig 14 ne t 16. Remove the four screws.
17. Turn the six clips anticlockwise to remove the shielding. (Fig 17) Fig 18 ht tp :// ww w. wj el. Fig 17 ne t 18. Disconnect the wire harness of main board and panel.
Chapter 4 Troubleshooting This chapter provides troubleshooting information for the AL2051W: 1. Main board No power No power Press power key and look if the picture is normal ne t NG the AC of 100-240 is normal NG Reinsert or check the Adapter/Inverter section w. wj OK el. Please reinsert and make sure Measure U703 PIN2=1.8V U705 PIN2=3.
No picture (LED orange) No picture NG The button if under NG X401oscillate control Replace X401 waveform is normal OK OK NG Check reset circuit of U402 is normal ne t Measure U703 PIN2=1.8V Check Correspondent component U705 PIN2=3.3V OK NG waveform is normal w. wj X402 oscillate el.
White screen White screen Measure Q701 base NG X401 oscillate waveform is normal is high level? OK Replace X401 Check reset circuit of broken or CN407 solder? U402 is normal el. ne Check Q701, Q702 is NG NG Check Correspondent component. OK OK Replace U402 ht tp :// ww Replace Panel w. wj Check Correspondent component. NG t OK Note: 1. If Replace “MAIN-BOARD”, Please re-do “DDC-content” programmed & “WHITE-Balance”. 2.
2. Power Board No power No power Check AC line volt 110V or 220V NG Check AC line t OK ne Check the voltage of C904(+) NG Check F901, bridge rectified circuit NG Check R903, R904,IC901 ww OK w. wj Check start voltage for the pin3 of IC901 el.
3. Inverter Board No backlight Check L805 =12V NG OK Check adapter board Check ON/OFF signal NG OK Check main board ne t Check IC801 PIN5=5V+ -0.25V NG OK NG OK Check R821,C821 ww Check IC801 PIN11, 12,19,20 NG :// OK w. wj Check IC801 PIN18 triangular wave is normal el.
Keypad Board OSD is unstable or not working N Is Keypad Board connecting normally? Connect Keypad Board Y N Is Button Switch normally? Replace Keypad Board el. Y ne N Is Keypad Board Normally? t Replace Button Switch ht tp :// ww w.
Chapter 5 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 Red 9. +5V 2. Green 10. Logic Ground 3. Blue 11. Monitor Ground 4. Monitor Ground 12. 5. DDC-Return 13. 6. R-Ground 14. 7. G-Ground 15. 8. B-Ground t 1. ne DDC-Serial Data H-Sync el. V-Sync ww w.
Chapter 6 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 should check the most up-to-date information available on your regional web or channel (http://aicsl.acer.com.tw/spl/).
ht tp :// w ww .w j el.
Part List Above picture show the description of the following component. Item Picture Description Part No. HINGE COVER-F 33G4967 QW L 1 33G4968 QT L ne t HINGE COVER-B 2 34G1782AQW B ww w. wj el.
SHIELDING 85G 732 1 6 PANEL 750GLUA1W1211N el. ne t 5 7 AICA90KAUAEP ww w.
SPEAKERS 78G 322 3B 11 BASE 34G1785 QW B el. ne t 10 ww :// tp ht 13 BASE BACK COVER 33G4965AQT 1L HINGE HOLDER 20G 041 1 w.
Chapter 7 Schematic Diagram Main Board SCHEMATIC ne t MST9251A B2 B1 RIN GNDR GIN GNDG SOG BIN GNDB HSYNC VSYNC R+ RG+ GB+ BCLK+ CLK- R+ RG+ GB+ BCLK+ CLK- 3.INPUT ALE RD WR HWRESET INT VLCD VDD_MPLL VDDC +APLL AVDD_DVI AVDDA ALE RD WR HWRESET INT B6 VCC12V_AUDIO VCC12V_AUDIO AUDIO_MU AUDIO_SD VOLUME 7.AUDIO B4 Volume FSDQM1 FSDQM0 FSDQSU3 FSDQSU2 FSDQSU1 FSDQSU0 FSDATAU[0..31] FSCLK+ FSCLKFSCKE FSADDR[0..11] AdjBACKLITE VLCD +2.5V_DMQ+2.5V_DMC B5 +2.5V_DMQ +2.5V_DMC FSDATAU[0..
VCC5V VCC12V VCC5V VCC5V + + C706 220uF/16V AM4811P-T1-PF + + C707 C708 C709 220uF/16V 220uF/16V 220uF/16V 1/16W Q701 AO3401 G 7 R709 4.7K 1/16W B 7 onPanel_5V/3.3V Q702 (NC)0.1uF/16V C702 (NC)1uF/16V E C704 D125 R710 0.1uF LP701 U707 + R721 C705 C774 20K 1/10W 220uF/16V 220uF/16V 0805 2 4 1 C701 1000pF 0805 R720 20K 1/10W 1% 0805 C712 0.0047uF 0805 D702 LM3485 BEAD 10K MH4 MH5 MH6 VCC12V_AUDIO R727 4.7K 8 10K 1/16W B 7 onPOWER C776 1/16W 0.
R102 100 1/16W C102 0.047uF 1/16W R103 100 1/16W C103 0.047uF FB103 0 1/16W R104 100 1/16W C104 0.047uF R105 470 1/16W C105 0.001uF R108 100 1/16W C108 0.047uF R109 100 1/16W C109 0.047uF R110 100 1/16W C110 0.047uF 1/16W NC 75 C106 NC C107 3 D105 BAV99 VCC5V VCC5V 1 10K 100 1/16W 0.1uF 1/16W D108 TZMC5V6-GS08 R116 2.
CONNECTOR for PANEL CN407 GND +3.3DV1 AVDD_PLL 3 AVDD_PLL AVDDPLL2 VDD_MPLL 3 VDD_MPLL 3 3 AVDD_DVI 3 VGA INPUT 4 4 4 4 4 4 4 4 4 GNDB BIN GNDG GIN SOG GNDR RIN HSYNC VSYNC C427 0.1uF 27 28 29 30 31 32 33 36 37 38 39 40 0.1uF BIN0M BIN0 GIN0M GIN0 SOGIN0 RIN0M RIN0 HSYNC0 VSYNC0 RMID REFP REFM 0.1uF AD0 AD1 AD2 AD3 HWRESET INT ALE RD WR AD0 AD1 AD2 AD3 3 8 AdjBACKLITE Volume 200 201 62 158 PWM0 PWM1 22pF C418 76 78 XTAL 202 TCLK 203 14.
+2.5V_DMQ +2.5V_DMC C302 C303 C304 C305 C306 C307 C308 C309 C310 C311 C312 C313 C314 C315 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.
VCPU 20 10 VCPU 4.7K C D402 BAV99 B LED_ORANGE 2 C LED_GRN 3 DP1 3 1/16W R438 Q402 PMBS3906 DUAL LED C452 1000pF 1 C451 1000pF 2 1 2 3 VCPU D403 BAV99 LED_O 1/16W 1/16W 1/16W 1/16WR455 5 6 7 8 10K 10K 10K 4 3 2 1 1/16W B Q403 PMBS3904 R441 10K C445 0.
VCC12V_AUDIO 9 1/16W 7 12 AUDIO_MU C609 20K 20K R605 1/16W R606 1/16W 1uF C610 STBY VAROUT_R MUTE VAROUT_L + 1uF C612 100pF ww C611 100pF + SVR 17 14 10 7 C605 C607 220uF/16V OUT_L 220uF/16V OUT_R 5 + C608 220uF/16V .w j 7 OUTR VOLUME 11 AUDIO_SD OUTL INR 6 PHONEJACK 15 INL + 4 0.47uF/16V + 0.47uF/16V C606 U601 TDA7496L GND GND GND GND GND GND GND 18K C604 C603 0.1uF ne t 1/16W R602 C602 220uF/16V el.
ht tp :// w ww .w j el.
CN801 C801 33pF/3KV D801 SB240 5 2.2uF/1206 2 6 7 C825 1uF/0805 8 9 C829 0.0068uF/25V R826 39K 10 ENA CT SST RT VDDA GNDA REF RT1 PWRGND LCT DIM LPWM FB PDRV_C CMP NDRV_D N.C 19 18 R821 30K 0805 C821 220PF/0805 17 R824 1M/ 0805 NC C824 NC C846N.C 14 C826 NC 13 C828 0.047uF/0805 12 11 R827 22 0805 0805 R828 NC Q809 R832 NC RK7002 2 R834 51K 0805 R833 130K D808 は 1 4 0805 2 3 layout D809 2 Q808 RK7002 4148 D810 BAV99 R829 15K 0805 C831 4.
