Instruction/ maintenance manual of the product B203W Acer
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1 Acer B203W Service Guide.
2 Service Guide V ersion and Revision Version Release Date Revision History TPV model A00 Apr .-2-2008 Initial Release TA7AM6D8W7AYDN/ TA7AM6D8W7AYHN.
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 monit or .
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 ype) cd/ ㎡ Separate Sync.
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 U401 Scalar IC TSUM5PFHL-LF (Include MCU ,ADC, OSD) · D-Sub Connecto r (CN101) H sync V sync RGB LCD Interface (CN301) Key Board Control (CN402) Crystal (X401) 14.
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 CN402 W AFER CN102 DVI 24PIN CONNECTOR CN701 W AFER 9P RIGHT ANELE PITCH U10 3/U104/U105/ U106/U10 7 IC AZC099-04S SOT23-6L CN301 CONNECTOR U.
19 Installation 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 monito r and computer are switched off. B: Connect the VGA video cable to the computer. C: Connect the digital cable (only for dual-input mo dels).
20 Attaching/Removing The Base Install: Align the base with the stand and push the b ase towards the top of the monitor, and then rotate the base clockwise.
21 Tilt Please see the illustration below for an example of the tilt range. Sw iv el With the built-in pedestal, you can swivel the m onitor for the most comfortabl e viewing angle. Monitor Pivot Adjust height to the top position before rotation the moni tor.
22 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.
23 eColor Management (OSD).
24 How to Adjust a Setting.
25 Adjusting the picture.
26.
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 HINGE ASSEMBL Y as the following indicator . (Fig 1) Fig 1 2. Remove the back cover and be zel.
29 3. Remove the lamp connectors a nd the screw . (Fig 3-4) Fig 3 Fig 4 4. Remove the screws to remove the panel. Put attention to the L VDS cable.(Fig 5) Fig 5 5.
30 T r o u b l e s h o o t i n g This chapter provides troubleshooting information for the B203W: 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 U701 Pin2=3.
31 2. No Picture (LED is orange) No picture The button if under control X401 oscillate waveform is normal Replace U401 Replace X401 Measure U701 Pin2=3.
32 3. Panel Power Circuit White screen Measure Q301 base is low level? X401 oscillate waveform is normal Check CN301 is solder and Q301,Q302 is OK? Check Correspondent component.
33 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 .
34 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(+) .
35 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.
36 Connector Information The following figure shows the connector loc ations on the monitor: D-SUB connector Cha p ter 5.
37 DVI Connector.
38 FRU (Field Replaceable Unit) List This chapter gives you the FRU (Field Repla ceable Unit) listing in global configurations of B203W.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 HINGE ASSEMBL Y 2 Main Frame 3 Panel.
40 4 Power Board 5 Main Board 6 FFC CABLE.
41 S c h e m a t i c D i a g r a m Main Board R1 15 100R 1/ 16W 5% DSUB _V 2 DSUB _S CL C119 NC DDC2_ SCL 2 Prevent NC contact Discharge => Connect NC Pin of CN101 to GND C12 1 1000pF DDC1_ SDA 2 F.
42 C3 02 0. 1uF / 16V PA[ 0. . 9] LVB3M LVA0P RX O C- LVB3P U3 01 NCA O4 41 1 1 2 3 4 8 7 6 5 S S S G D D D D PB[ 0. . 9] PB9 3 PB4 C3 01 0. 1uF / 16V RX E C+ PB1 LVB1M RX O 0 + 1 LVA0M RX E 3 - RX O 1 + PA3 PA8 Q302 2N 3906S-R T K/ PS PA7 LVB0P PB2 CM VCC LVA3M LVA2P RX O 3 + PB[ 0.
43 CM VCC FB7 01 NC R701 CM VCC VC TRL Q702 KN2907AS 0R05 1/4W NC Volum e# 2 VC C 3. 3 R7 0 5 10K 1/ 16W 5% TSUMO58CWHL Internal EDID BAT54 C C7 01 0.1uF / 16V PAN EL_I D # 2 BKLT-VBRI C711 0. 1uF 16 V C N701 CO NN 1 2 3 4 5 6 7 8 9 F B703 300 OHM External EDID C7 02 NC 3.
44 DDC1 _S DA 1 FB4 04 300OH M FB405 and C436 PANEL _ID # 4 R136 VCC 3. 3 DSUB _G + 1 C423 0.22uF16V Del C209 10uF/50V U402 C40 3 0.1uF/ 16V R441 10K 1/16W 5% C41 0 0.1 uF/ 16V DSUB _B + 1 EE_W P R444 3.9 K OHM 1% 1/16W WAFER 2.0MM 6P PA3 Q405 NC NC AVDD C41 3 0.
45 Power board ! +5V CN90 2 HARNE SS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 R907 NC C930 0.1 uF MU TE R96 2 100 OH M 1/4W - + BD901 2KBP08M 2 1 3 4 L904 1.1 uH ! ! R938 10K 1/ 8W ZD9 0 1 NC 1 2 ! R925 1K 1/8W HS3 H EAT SIN K(Q90 1) 1 2 + C915 470uF /16V D91 6 LL4148 T9 01 POW ER X ' F MR 4 5 6 7 8 9 10 11 12 4 6 1 3 D905 SP1060 1 2 3 R927 3.
46 R83 5 1M 1/10W 5% C8 45 2.2uF /16V D80 6 LL4148 R81 9 3.6K OH M 1% 1 /10W Q810 RK7002 R80 9 1K 1/10W 1% R8 20 47K 1/ 10W C801 5pF/ 6KV D8 10 NC DIM R81 2 1K 1/10W 1% R811 2.4K OH M 1% 1/10W R85 0 10 OH M 1/8W R85 5 15 OHM 1/4W R8 37 47K 1/8W R84 1 68K OHM 1% 1/10W C83 9 1500pF Q804 PMBS3906 1 2 3 R808 10K 1/10W 1% C82 1 0.
47 R 608 0R 05 1/ 8W LOU T - C 617 0. 47uF / 16V change R601 R613 +5V_Audio C N 602 PH ON EJ AC K 1 2 3 5 4 R 605 10K 1/ 10W 5% R 613 330 OH M +-5% 1/10W R 617 1K 1/ 10W 5% CN604 ㎝ CN603 Layout .
48 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 B203W (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 B203W 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 B203W - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Acer B203W you will learn all the available features of the product, as well as information on its operation. The information that you get Acer B203W will certainly help you make a decision on the purchase.
If you already are a holder of Acer B203W, 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 B203W.
However, one of the most important roles played by the user manual is to help in solving problems with Acer B203W. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Acer B203W 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
