Instruction/ maintenance manual of the product V203W Acer
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1 Acer V203W Service Guide.
2 Service Guide V ersion and Revision Version Release Date Revision History TPV model A00 Mar .-20-2008 Initial Release TA7ANCD8W7AYNN.
3 Copyright Copyright © 2003 by Acer Incorpo rated. All rights rese rved. No part of this publi cation may be reproduced, Transmitted, transcribed, stored in a retrieval system, or translated into an.
4 Preface Before using this information and the produ ct it supp orts, please read the following gene ral information. 1. This Service Guide provides you wi th all technical information relati ng to the BASIC CONFIGURATION decided for Acer's "global" product offering.
5 Precautions z Do not use the monitor near water , e.g. near a bathtub, washbowl, kitchen sink, laundry tub, swimming pool or in a wet basement. z Do not place the monitor on an unsta ble trolley , sta nd, or table. I f the monitor falls, it can injure a person and cause serious damage to the appliance.
6 T able Of Contents Chapter 1 Monitor Features ………………………………………… 7 Introduction ……………………………………… 7 Electrical Requirement s …………….
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 ca n be directly connecte d to general 15-pin D-sub VGA connector , also supports VESA DPMS power management and plug & play function.
8 Electrical Requirement s Standard Test Conditions All tests shall be performed under the foll owin g conditions, unless otherwi se specified. Ambient light Dark room (< 1 cd/m2) Viewing distance .
9 LCD Monitor General Specification Driving system TFT Col or LCD Active Display Area 433.41(H) x 270.90(V ) Pixel pitch 0.258(H) x 0.258(W) Contrast Ratio 1000 : 1 Response ti me 5ms LCD Panel Luminance of White 300(T yp.
10 LCD Panel Specification This specification applies to the 20.1 inch-wi de Color TFT-LCD Module M20 1EW02. The display supports the WSXGA+ (1680(H) x 1050(V)) scre en format and 16.7M col o rs (RGB 6-bits+Hi-RFC data). All input signals are 2 Channel LVDS interface compa tible.
11 Electrical Characteristics TFT LCD Module － Power Specification Backlight Unit.
12 Optical Specifications.
13 Support Timing Horizont al V ertical Mode Resolution T otal Nominal Frequency +/- 0.5kHz Sync Polarity Nominal Freq. +/- 1 Hz Sync Polarity Nominal Pixel Clock (MHz) 640x480@60Hz 800 x 525 31.469 N 59.940 N 25.175 640x480@72Hz 832 x 520 37.861 N 72.
14 Monitor Block Diagram The LCD MONIT OR will contain a main board, a power board, and key bo ard which house the flat p anel control logic, brightness control logic and DDC. The power board will prov ide AC to DC Inverter voltage to drive the backlight of p anel and the main board chips each voltage.
15 Main Board Diagram Scalar IC NT68625HMFG-128 JS (Include MCU ,ADC, OSD) (U401) D-Sub Connector (CN403) H sync V sync RGB LCD Interface (CN101) Key Board Control (CN701) Crystal (X401) 12MHz.
16 Softwar e Flow Chart N Y 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.
17 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? 6) Clear all global flags. 7) Are the AUT O and SELECT key s pressed? 8) Enter factory mode.
18 Main Board Layout Symbol Description Symbol Description U402 AZ431AN-A-E1 CN701 WAFER 6PIN U401 NT68625HM FG-128 JS CN702 WAFER 9P RIGHT ANELE PITCH U702 AP1117E33LA CN403 D-SUB 15PIN CN101 CONNECTOR X401 NXS12.
19 Inst allation To install the monitor on your host system, please follow the ste ps below: Steps 1 Connect the video cable A ： Make sure both the monitor and computer are switched off. B ： Connect the VGA video cable to the computer. 2 Connect the power cord Connect the power cord to the monitor, then to a properly grounded AC outlet.
20 Att aching/Removing the Base Attaching: Align the release button on the bottom of the monitor wi th the co rresponding slots on the botto m of the base. Removing: Press the release button as indicated, then pull in the direction of the arrow to remove the base.
21 O p e r a t i n g I n s t r u c t i o n s Press the power button to turn the monitor on o r of f. The other control buttons are locate d at front panel of the monitor . By changing these settings, the picture can be adju sted to your personal preference s.
22 eColor Management (OSD).
23 How to Adjust a Setting.
24 Adjusting the picture.
25.
26 OSD Message a. Outline b. The Description For OSD Message Item Description Auto Config Please W ait When Analog signal input, if User Press Hot- Key “Auto”, will show this messa ge, and the monitor do the auto config function.
27 Logo When the monitor is power on, the LOG O will be showed in the center , and disappear slowly . How T o Optimize The DOS-Mode Plug And Play Plug & Play DDC2B Feat ure This monitor is equipped with VESA DDC2B capabilities accordi ng to the VESA DDC ST ANDARD.
28 Machine Disassembly This chapter contains step-by-step pro cedures on how to disassemble the monitor for maintenance. Disassembly Procedure 1. Remove the cover hinge as the following indicator . (Fig 1) Fig 1 2. Remove the screws as following indicate to release base st and.
29 3. Remove the back cover and bezel. (Fig 3) Fig 3 4. Remove the lamp connectors a nd the screw . (Fig 4-5) Fig 4 Fig 5.
30 5. Remove the screws to remove the panel. Put attention to the L VDS cable.(Fig 6-7) Fig 6 Fig 7 6. Remove the screws to remove t he main board and power board.
31 T r o u b l e s h o o t i n g This chapter provides troubleshooting information for the V203W: 1. No Power Cha p ter 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 Reinsert or check the power section Check if X401 oscillate waveforms are normal Measure U702 Pin2=3.
32 2. No Picture (LED is orange) No picture The button if under control X401 oscillate waveform is normal Replace U401 Replace X401 Measure U702 Pin2=3.
33 3. Panel Power Circuit White screen Measure Q705 base is high level? X401 oscillate waveform is normal Check CN101 is solder and Q704,Q705 is OK? Check Correspondent component.
34 4. Key Board OSD is unst able or not working Is Key Pad Board connecting normally? Connect Key Board Is Button Switch normally? Replace Button Switch Y NG NG Is Key Pad Board normally? Replace Key .
35 5. Power Board No power Check to CN902 Pin10,1 1 =14V and Pin6,7 = 5 V OK Check Interface board Check AC line volt 120V or 220V Change F901, Check BD901, L901, IC9 01 Check the voltage of C9 05(+) .
36 W/LED No Backlight Check the 14V volt age input Check the adapter Check ON/OFF sign al Check Interface board Check IC801 pin12=1 2V? Change Q805.Q808 or Q8 10 Check the pin9&10 of IC801 have PW.
37 Connector Information The following figure shows the connector loc ations on the monitor: Cha p ter 5.
38 FRU (Field Replaceable Unit) List This chapter gives you the FRU (Field Repla ceable Unit) listing in global configurations of V203W.Refer to this chapter whenever ordering for parts to repair o r for RMA (Return Merchandise Authori zation).
39 Part List Above picture show the description of the followin g component. Item Picture Description 1 Base 2 Main Frame 3 Panel.
40 4 Power Board 5 Main Board.
41 S c h e m a t i c D i a g r a m Main Board 2K2 1/16W 5% R4 3 8 HS G1 VGA_VD D 1K 1/ 16W 5% R4 2 5 VSI 4 220pF C4 2 3 GI 1 4 22pF C4 2 5 B1 D4 0 2 BAV99 3 1 2 75R 1/ 16W 5% R4 27 4K7 1/ 16 W 5% R4 35 R1 VS D-SUB1 B1 HS 1K 1/ 16W 5% R4 3 0 SOGI 4 GI 1- 4 R4 31 470R 1/ 16W 5% 100R 1/ 16W 5% R4 24 0.
42 T2 M 4 LC D -VD D T5 M Q705 PM BS390 4 T1 P 4 T7 P 4 T C LK2M 4 PAN EL_ON 4 T4 M T1 M TC L K 1 P 4 T7 M 4 T0 P 4 LC D -VD D T6 M 4 T0 P T C LK2M R7 1 3 10K 1/ 16W 5% T4 P 4 T5 P T4 M 4 T5 P 4 T6 M .
43 VGA_SDA 2 HSO NC D401 B AV70 3 1 2 Detect 5V -->4V Reset LED_G 5 R41 3 NC C426 T4M 3 R44 6 1K 1/ 16W 5% VSI 2 T3M 3 REFCLK I C42 6 NC 7 2 +1.8 V R44 4 0R05 1/16W C40 8 0.1 uF 16 V T7P 3 TX R41 4 NC R40 4 10K 1/10W 1% T0M 3 R417 10K 1/16W 5% C40 7 NC R404 chang e type 0402 5%-- >0603 1% 10/12/07 R40 6 NC C411 0.
44 +3. 3V CN7 02 CO NN 1 2 3 4 5 6 7 8 9 C7 09 0. 1uF 16V +3. 3 V AD C _VAA KEY 0 4 U 702 AP1117E33LA 1 2 3 4 VSS VOU T VI N 4 + C7 0 6 NC +5V C7 10 0. 1uF 16V +5V LED_G 4 R7 0 5 10K 1/ 16W 5% Q702 PM BS3906 +5V DV DD +3. 3V C 705 0. 1uF 16V D7 01 SM 340A KEY 1 4 C7 04 0.
45 Power board.
46.
47 Key board L ED_ RED# C 006 NC EC OLOR ECOLOR VOL+ R 001 2K OH M 1/ 16W ECOLOR C 008 NC (GND) LBAD C 1 LED C0 05 NC C N 001 CO NN 1 2 3 4 5 6 C0 07 NC AUTO L ED_ RED# POW ER _Key C 002 NC LED 001 LE.
An important point after buying a device Acer V203W (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Acer V203W yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Acer V203W - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Acer V203W you will learn all the available features of the product, as well as information on its operation. The information that you get Acer V203W will certainly help you make a decision on the purchase.
If you already are a holder of Acer V203W, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Acer V203W.
However, one of the most important roles played by the user manual is to help in solving problems with Acer V203W. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Acer V203W along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
