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OSD Menu-----------------------------------------------------------------------------------------------08 03. Exploded Diagram 05. Appendix I : User s Manual Appendix II: Quick Setup Guide ------------------------------------------------------------------------------------- 10 Troubleshooting----------------------------------------------------------------------------------------20 08. Schematics and Layouts------------------------------------------------------------------------------ 35 ’ 04. Assembly and Disassembly Procedures-----------------------------------------------------------12 06. Firmware Upgrade Procedure------------------------------------------------------------------------31 07. Writing EDID Procedure-------------------------------------------------------------------------------33 Appendix II : Spare Parts List Appendix IV: Software Pack Safety Notice Any person attempting to service this chassis must familarize with the chassis and be aware of the necessary safety precautions to be used when serving electronic equipment containing high voltage. Published by LITE-ON Service Printed in Taiwan © All rights reserved Subject to modification 19th-May-2008 Model ID:MB243WABNS Service ACER ACER_LCD_G24_SM080519V1 Service Manual Important Safety Notice 1ACER G24 Product Anouncement: This product is certificated to meet RoHS Directive and Lead-Free produced definition. Using approved critical components only is recommended when the situation to replace defective parts. Vender assumes no liability express or implied, arising out of any unauthorized modification of design or replacing non-RoHS parts. Service providers assume all liability. Qualified Repairability: Proper service and repair is important to the safe, reliable operation of all series products. The service providers recommended by vender should being aware of notices listed in this service manual in order to minimize the risk of personal injury when perform service procedures. Furtermore, the possibile existed improper repairing method may damage equipment or products. It is recommended that service engineers should have repairing knowledge, experience, as well as appropriate product training per new model before performing the service procedures. NOTICE: ! To avoid electrical shocks, the products should be connect to an authorized power cord, and turn off the master power switch each time before removing the AC power cord. ! To prevent the product away from water or explosed in extremely high humility environment. ! To ensure the continued reliability of this product, use only original manufacturer s specified parts. ! To ensure following safty repairing behavior, put the replaced part on the components side of PWBA, not solder side. ! To ensure using a proper screwdriver, follow the torque and force listed in assembly and disassembly procedures to screw and unscrew screws. Go to cover page ! Using Lead-Free solder to well mounted the parts. ! The fusion point of Lead-Free solder requested in the degree of 220 C.° 2 ACER G24 2 ACER G24 1. Product Specification Go to cover page 1.1 SCOPE This document defines the design and performance requirements for a 24W inch diagonal , flat panel monitor .The display element shall be a WUXGA (1920x1200) resolution TFT-LCD (Thin Film Transistor Liquid Crystal Display).16.7M color(RGB Hi+FRC) images are displayed on the panel.Video input signals are analog RGB (0.7Vp-p). When the systemis powered-on , previously stored screen parameters for a pre-defined mode will be recalled if the operating mode is one of stored in memory( 24 factory , 9 users timing ).This monitor operates normal by non- interlaced mode. DDC (Display Data Channel) function is DDC2Bi compliance Power saving function complies with the DPMS (Display Power Management Signaling) standard. 1.2 GENERAL REQUIREMENTS AMLCD: LTM240CT01 LTM240CT03 1.2.1 Test Condition Brightness level & contrast level max. Full white pattern test mode following spec. Warm up more than 1 hr, ambient light < 10 Lux , Luminance meter CA110 or BM7 or same equipment . 1.2.2 Test Equipment The reference signal source is a calibrated Chroma 2135 video generator or higher.The use of other signal generators during qualification and production is acceptable provided the product complies with this specification. 1.3 ELECTRICAL This section describes the electrical requirement of the monitor. The LCD monitor consists of an interface board , a power board , a function key board. The interface board wil l house the flat panel control logic , brightness control logic, audio function control (option), key function control, DDC and DC to DC conversion to supply the appropriate power to the whole board and LCD flat panel , and transmitting LVDS signals into LCD flat panel module to drive the LCD display circuit .The power board will support main power DC5V to interface board, and the power DC5.3V to audio function power of interface board, and drive the two CCFLs (Cold Cathode F...