Page 2 - Initial
2 Service Guide Version and Revision Version Release Date Revision History TPV model A00 Apr.-3-2008 Initial Release TK7SMHDBW7AYBC/ TK7SMHDKW7AYBC
Page 4 - Preface; user's authority to operate the equipment.
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 5 - Precautions; monitor from damage due to power surges.; Special Notes On LCD Monitors; then turn it on again to make sure the flicker disappears.
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 unstable trolley, stand, or table. If the monitor falls, it can injure a person and cause serious damage to the appliance....
Page 6 - Table Of Contents
6 Table Of Contents Chapter 1 Monitor Features ………………………………………… 7 Introduction ……………………………………… 7 Electrical Requirements ……………………………………… 8 LCD Monitor General Specification ……………………………………… 9 LCD Panel Specification ……………………………………… 10 Support Timing ……………………………………… 13 Monitor Block Diagram …………………………...
Page 7 - Monitor Features; Introduction; Scope; Chapter 1
7 Monitor Features Introduction Scope This specification defines the requirements for the 24” 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, also supports VESA DPMS po...
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 (< 1 cd/m2) Viewing distance 35-50cm Warm up time > 30 minutes Analog Input signal 700 mVss Control temperature 6500 ° K Brightness c...
Page 9 - LCD Monitor General Specification
9 LCD Monitor General Specification Driving system TFT Color 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 time 5ms LCD Panel Luminance of White 400(Typ.) cd/ ㎡ Separate Sync. H/V TTL H-Frequency 30kHz – 80kHz Input V-Frequency 56-76Hz V...
Page 10 - LCD Panel Specification; General Specifications; Mechanical Information
10 LCD Panel Specification LTM240CT01 is a color active matrix liquid crystal display (LCD) that uses amorphous silicon TFT (Thin Film Transistor) as switching components. This model is composed of a TFT LCD panel, a driver circuit and a back light unit. The resolution of a 24.0” is 1920 x 1200 and ...
Page 11 - Electrical Characteristics
Page 12 - Optical Specifications
Page 13 - Horizontal
13 Support Timing VESA MODES Horizontal Vertical Mode Resolution Total 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 72.809 N 31.500 VGA 640x480@75Hz 840 x 500 3...
Page 14 - Monitor Block Diagram
14 Monitor Block Diagram The LCD MONITOR will contain a main board, an inverter 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 provide AC to DC Inverter voltage to drive the backlight of panel and ...
Page 16 - Software Flow Chart
16 Software 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
Page 18 - Main Board Layout; Symbol Description Symbol; DVI 24PIN CONN F
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 ETR...
Page 19 - Installation
19 Installation To install the monitor on your host system, please follow the steps 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. C: Connect the digital cable (only for dual-input models). (1) Make ...
Page 20 - Attaching/Removing The Base; Remove: Reverse the steps to remove the base.; Screen Position Adjustment; Height Adjustment
20 Attaching/Removing The Base Install: Align the base with the stand and push the base towards the top of the monitor, and then rotate the base clockwise. Tighten the screw clockwise. Remove: Reverse the steps to remove the base. Screen Position Adjustment In order to optimize the best viewing posi...
Page 21 - Tilt; Please see the illustration below for an example of the tilt range.; Swivel
21 Tilt Please see the illustration below for an example of the tilt range. Swivel With the built-in pedestal, you can swivel the monitor for the most comfortable viewing angle. Monitor Pivot Adjust height to the top position before rotation the monitor. Rotate clockwise until the monitor stops at 9...
Page 22 - Operating Instructions; The power cord should be connected.; External Controls; Front panel controls; Chapter 2
22 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 24 - How to Adjust a Setting
Page 25 - Adjusting the picture
Page 27 - Logo; How To Optimize The DOS-Mode
27 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 28 - Machine Disassembly; Disassembly Procedure; Fig 2; Chapter 3
28 Machine Disassembly This chapter contains step-by-step procedures on how to disassemble the monitor for maintenance. Disassembly Procedure 1. Remove the hinge assembly as the following indicator. (Fig 1~2) Fig 1 Fig 2 Chapter 3
Page 32 - Troubleshooting; Chapter 4
32 Troubleshooting This chapter provides troubleshooting information for the B243W: 1. 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 Reinsert or check the power section Check if X401,X402 oscillate waveforms ar...
Page 36 - No power
36 5. Adapter/Inverter Board No power Check CN902 Pin3~7 = 24 V OK Check Interface board Check AC line volt 120V or 220V Check F901,NR901,power cable Check the voltage of C914 (+) Check bridge retified circuit Check start voltage for the Pin6 of IC903 Change IC903,IC951,ZD901,Q903,Q904,PS_ON OK Chec...
Page 38 - Connector Information; Chapter 5
38 Connector Information The following figure shows the connector locations on the monitor: D-SUB connector Chapter 5
Page 39 - DVI Connector
Page 40 - FRU (Field Replaceable Unit) List; Chapter 6
40 FRU (Field Replaceable Unit) List This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of B243W.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...
Page 41 - Part List; Item Picture; Hinge Assembly
41 Part List Above picture show the description of the following component. Item Picture Description 1 Hinge Assembly 2 Main Frame 3 Panel
Page 42 - Adapter Board
Page 44 - LVDS Cable
Page 45 - Schematic Diagram; Main Board; Chapter 7
45 Schematic Diagram Main Board Q704 AO3401 VCPU 6 +3. 3V 4 R 702 4K7 1/ 10W 5% +5V C 720 0.001uF SOT-263 FOR SCALER POWER R719 31. 6K 1% 1/ 10W +5V R710 100K 1/ 10W 5% HI HI +12V +12V GND R712100K 1/ 10W 5% R 707 1K 1/ 10W 5% R706 1K 1/ 10W 5% GND +3. 3V_SD +3. 3AVDD 4 C716 0.001uF C723 NC PS_ON ...
Page 49 - For HDCP
49 D427 UDZS5. 6B ALE 4 X402 24mhz R508 4K7 1/ 10W 5% R517 4K7 1/10W 5% R497 220R 1/10W VCPU MSCL C496 NC REV:C R506 4K7 1/10W 5% R510 22R 1/ 10W 5% AD0 C483 0. 1uF HDCP_W P OUT_L+ LEF T_KEY C486 22pF HDCP_SDA C490 0.001uF VCPU AUDIO_MUTE 4 R531470R 1/10W 5% VOLUME 4 AUDIO_STDBY LED_G R511 100R 1/10...
Page 51 - Adapter board
51 Adapter board R943 NC + C965 1000uF/35V R947 470R 1/8W F 902 F USE CN903 Wire Harness 1 2 3 4 5 6 78 9 10 11 12 13 14 C967 0. 1uF VCC2 R971 100 Ω 1/ 4W 5V IC903 NCP1377BDR2G 1 2 34 5 6 8 Dmg F B CS GND Drv Vcc HV R9464 2.2 1/4W C931 NC R975 10K 1/8W ON/OFF T5A 250VAC R973 1. 2K Ω 1/ 4W R9462 2....
Page 53 - Inverter board
53 Inverter board DR V2 C 807 1uF50V C814 1uF +5V R 819 5. 1K 1/4W R817 27K 1/10W Q811 MMBT3904 D 812 LL4148 R816 10KOH M 1/ 10W +5V D 816 SC S140V 1 2 R832 10KOH M 1/ 8W R 818 10K 1/ 8W Q813 MMBT3904 D827 SM340A R 834 10K 1/10W R 830 3. 3M OHM 1/ 14W VI N R803 120K 1/8W F804 0 OH M +-5% 1/ 4W Q802 ...
Page 55 - Key board; AUTO
55 Key board C004 NC LED001 LED 3 4 1 2 C003 NC LBADC1 MENU VO L+ CN001 POWER AU T O 0 V C 008 NC LED_RED# C 006 NC EC O LOR ECOLOR R002 2K OHM 1/16W VOL+ ECOLOR (GND) LBADC1 LED C005 NC AUTO LED_RED# POWER_Key ZD002 UDZSNP5.6B 1 2 ME NU 0 V C001 NC C002 NC POW E R _Key LBADC2 VOL+ LBADC2 MENU CONNE...
Page 56 - USB board
56 USB board USB5V ZD 70 7 EG A1 06 03 V0 5A 1-B 1 2 R752 22K 1/ 10W C 787 0.1uF16V C797 10N 50V C782 0.1uF16V DM4 R7 5 7 10 0K 1 /10 W 5% C7100 1uF/ 16V DM2 CN 709 CONN 1 2 3 4 5 X701 24. 000MHz 1 2 R 722 10K 1/ 10W 5% USB5V Power USB C 779 1uF /25V R739 0R05 1/ 10W 5% C789 0.1uF16V C 791 0.1uF16V ...