Instruction/ maintenance manual of the product B243W Acer
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1 Acer B243W Service Guide.
2 Service Guide V ersion and Revision Version Release Date Revision History TPV model A00 Apr .-3-2008 Initial Release TK7SMHDBW7AYBC/ TK7SMHDKW7AYBC.
3 Copyright Copyr i ght © 2 00 8 by Ac e r Inc o rp o r at e d. All rights r e s e rved. No p a rt of this publ i c a t ion may be repr o d u c ed, Transmitted, transcribed, stored in a retrieval sys.
4 Preface Before using this information and the produ ct it supp orts, please read the following general 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. If the monitor falls, it can injure a person and cause serious damage to the appliance.
6 T able Of Content s Chapter 1 Monitor Features ………………………………………… 7 Introduction ……………………………………… 7 Electrical Requirement s ………….
7 Monitor Features Introduction Scope This specification defines the requirements for the 24” MICROPROCESSOR based Multi-mode supported high resolution color LCD monitor .
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 518.4(H) x 324.0(V) Pixel pitch 0.270(H) x 0.270(W) Contrast Ratio 1000 : 1 Response ti me 5ms LCD Panel Luminance of White 400(T yp.
10 LCD Panel Specification LTM240CT01 is a col or active matrix liquid crystal display (LCD) that uses amorphous silicon TFT (Thin Film Transistor) as switching com ponents. This model is composed of a TFT LC D pan el, a driver circuit and a back light unit.
11 Electrical Characteristics.
12 Optical Specifications.
13 Support Timing VESA MODES 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.
14 Monitor Block Diagram The LCD MONITO R will contain a main board, an in verter board, an adapter board, a key board and a USB board which house the flat panel 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 chip s each voltage.
15 Main Board Diagram MCU MTV416GMV (U407) Scalar IC MST9200HA-LF-165 (Include ADC, OSD) (U403) EEPROM M24C16 (U408) D-Sub Connecto r (CN402) EEPROM M24C02 (U402) H sync V sync RGB DB15_SDA, DB15_SCL .
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 D-SUB 15PIN U403 IC MST9200HA-LF-165 PQFP-208 CN401 DVI 24PIN CONN F U701 IC AIC1084-33PMTR-R AIC CN703 WAFER 30P 2.0MM DIP DUAL ROW U702 IC AIC1084-33PMTR-R AIC CN701 WAFER 14P RIGHT ANGLE PITCH U404 IC EM636165TS-5G 16M TSOPII-50 ETRON CN405 WAFER 6P RIGHT ANGLE PITCH 2.
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 located at front p anel 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 according to the VESA DDC ST ANDARD.
28 Machine Disassembl y This chapter contains step-by-step pro cedures on how to disassemble the monitor for maintenance. Disassembly Procedure 1. Remove the hinge assembly as the following indi cator .
29 2. Remove the back cover , bezel and re move the screws remarke d in red in orde r to remove the main board below . ( Fig 3~Fig 4) F i g 3 F i g 4 3.
30 4. Remove the screws rem arked in red and relea se the connector remarked in blue to remove the USB board.(Fig 8) Fig 8 5. Remove the screws to remove the panel.
31 6. Remove the screws to remove the main boar d, adapter board an d inverter board.( Fig 1 1) Fig 1 1.
32 T r o u b l e s h o o t i n g This chapter provides troubleshooting information for the B243W: 1. No Power Cha p ter 4 No power Press power key and look if the picture is normal Please reinsert and.
33 2. No Picture (LED is orange) No picture The button if under control X401 oscillate waveform is normal Replace U407 Replace X401 Measure U701, U702 Pin2=3.
34 3. White screen White screen Measure Q707 base is low level? X402 oscillate waveform is normal Check Q705,Q706,Q707 is broken or CN703 solder? Check Correspondent component.
35 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 .
36 5. Adapter/Inverter Boa rd No power Check CN902 Pin3~7 = 2 4 V OK Check Interface board Check AC line volt 120V or 220V Check F901,NR901,powe r cable Check the voltage of C9 14 (+) Check bridge ret.
37 W/LED No Backlight Check the 24V volt age input Check the adapter Check ON/OFF sign al Check Interface board Check the voltage of IC80 1 pin2 Change Q805.
38 Connector Information The following figure shows the connector loc ations on the monitor: D-SUB connector Cha p ter 5.
39 DVI Connector.
40 FRU (Field Replaceable Unit) List This chapter gives you the FRU (Field Repla ceable Unit) listing in global configurations of B243W.Refer to this chapter whenever ordering for parts to repair o r for RMA (Return Merchandise Authori zation).
41 Part List Above picture show the description of the followin g component. Item Picture Description 1 Hinge Assembly 2 Main Frame 3 Panel.
42 4 Adapter Board.
43 5 Inverter Board 6 Main Board 7 USB Board.
44 8 L VDS Cable.
45 S c h e m a t i c D i a g r a m Main Board Q704 AO3401 VCPU 6 +3. 3V 4 R702 4K7 1/10W 5% +5V C720 0.001uF SOT-263 FOR SCALER POWER R719 31.6K 1 % 1/10W +5V R710 100K 1/10W 5% HI HI +12V +12V GND R712 100K 1/10W 5% R707 1K 1/10W 5% R706 1K 1/10W 5% GND +3.
46 DVI_CONNEC T_MCU +5V R441 10K 1/10W 5% LOW REV:C RX 1- IN SDA_D B D421 UD ZS5. 6B NC Q405 2N7002E D406 BAV99 3 1 2 TX_SD A 6 RX C-IN VGA_C ON NC R42 7 47R 1/ 10W VG A_CO NNECT _M CU 6 R463 2K2 1/10.
47 VDDC CKE 5 X4 0 1 14.31818M H z AV DD_DV I SOG 3 RX OIN3- 7 MDATA22 AR6 C42 7 0.1uF MVr ef MDATA18 ALE 6 RX EIN0- 7 RD 6 MDATA28 LVB0N MDATA19 HDCP_CL K 3 LVACKN RX EIN2+ 7 AD2 C44 7 0.1uF +3.3 AVD D VD DM +3. 3V 2 C46 3 NC AVDD _PLL2 C44 6 22uF 16V +3.
48 DQM 1 4 M D ATA8 CKE M D ATA28 AR5 WE 4 R 478 47R 1/ 10W C 474 0. 1uF REV:C +3. 3V _MQ AR 3 AR 10 C46 6 0. 1uF CA S 4 M D ATA21 WE M D AT A18 M D ATA0 MDATA12 MC L K AR 1 +3. 3V_ MC WE MD A TA 7 AR 3 MDATA26 DQM 1 R 474 47R 1/ 10W R4 77 22R 1/ 10W 5% AR2 C 464 22uF 16V AR8 M D AT A16 CK E 4 M D ATA29 AR 1 +3.
49 D427 UDZS5 .6B ALE 4 X 402 24mhz R508 4K7 1/ 10W 5% R517 4K7 1/ 10W 5% R4 97 220R 1/ 10W VCPU MSC L C49 6 NC REV:C R506 4K7 1/1 0W 5% R510 22R 1/ 10W 5% AD0 C483 0.
50 . RX E IN0 - RX E IN0 + RX E CK IN+ 4 RX E 1 + RX E CK IN- R7 2 0 220R 1/ 4W RX O 3 + RX O IN2 + RX O IN1 - 4 RX E IN3 - RX E IN3 - F B702 120 OH M 1 2 RX E IN3 + RX O C- RX O CK IN- 4 R 721 220R 1.
51 Adapter board R 943 NC + C 965 1000uF / 35V R 947 470R 1/8W F 902 FUS E C N903 W ire H arness 1 2 3 4 5 6 7 8 9 10 11 12 13 14 C 967 0. 1uF VC C2 R 971 100 Ω 1/ 4W 5V I C903 N CP1377BD R 2G 1 2 3 4 5 6 8 Dmg FB CS GN D Drv Vc c HV R 9464 2. 2 1/4W C 931 NC R 975 10K 1/8W ON/OFF T5A 250VAC R 973 1.
52 R9 54 1K 1/4W In SVT Add it R919 1M 1/ 4W R91 7 13K 1/8W L902 12. 0m H 1 2 4 3 Q903 PM BS3906 C919 0.33uF / 50V R902 680K Ω 1/4W +24V R920 1M 1/ 4W R963 10K 1/8W - + BD901 KBJ608G 2 1 3 4 R92 4 150K Ω 1/4 W C922 0.01uF CN 901 SOCKET 1 2 3 R930 51K 1/8W +5V L903 120uH +5V 1 R9109 100K 1/4W C90 5 0.
53 Inverter board DRV2 C807 1uF50 V C814 1uF +5V R819 5. 1K 1/4W R81 7 27K 1/1 0W Q811 MM BT3904 D812 LL4148 R816 10KOH M 1/10W +5V D81 6 SC S140V 1 2 R83 2 10KOHM 1/8W R81 8 10K 1/ 8W Q813 MM BT3904 D827 SM340A R834 10K 1/1 0W R83 0 3.
54 PT 803 X ' F M R 564uH 4 1 2 6 PT 809 X ' F M R 564uH 4 1 2 6 PT 812 X ' F M R 564uH 4 1 2 6 C 832 2U 2 25 V CN8 0 6 CO NN 1 2 3 4 5 6 7 CN8 0 7 CO NN 1 2 3 4 5 6 7 PT 808 X ' F.
55 Key board C0 04 NC LED 001 LED 3 4 1 2 C 003 NC LBADC1 MENU VOL+ CN001 POWER AU T O 0 V C 008 NC L ED_ RED# C 006 NC EC OLOR ECOLOR R 002 2K OHM 1/16W VOL+ ECOLOR (GND) LBAD C 1 LED C0 05 NC AUTO L ED_ RE D# POW ER _Key ZD0 0 2 UDZSNP 5.
56 USB board USB 5V ZD70 7 EGA10603V0 5A1-B 1 2 R7 52 22K 1 /10 W C7 87 0.1uF 16V C79 7 10N 50V C782 0.1uF 16V DM 4 R7 57 100K 1/ 10W 5% C71 00 1uF / 16V DM 2 CN70 9 CONN 1 2 3 4 5 X7 0 1 24. 000MHz 1 2 R7 22 10K 1/ 10W 5% USB 5V Pow er US B C7 79 1uF / 25V R73 9 0R05 1/ 10W 5% C789 0.
An important point after buying a device Acer B243W (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 B243W 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 B243W - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Acer B243W you will learn all the available features of the product, as well as information on its operation. The information that you get Acer B243W will certainly help you make a decision on the purchase.
If you already are a holder of Acer B243W, 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 B243W.
However, one of the most important roles played by the user manual is to help in solving problems with Acer B243W. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Acer B243W 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
