HannStar Display HG171A Service Manual
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H a n n S t a r D i s p l a y C o r p .Document Title HG171A_XY _HSM Page No. 47 47 / 65Document No. Revision08/09/09The information contained in this document is the exclusive property of HannStar Display Corporation. It shall not bedisclosed,distributed or reproduced in whole or in part without written permission of HannStar Display Corporation.12. DDC InstructionGeneralDDC Data Re-programmingIn case the main EEPROM with Software DDC which store all factory settings were replaced because a defect,repaired monitor’ the serial numbers have to be re-programmed.It is advised to re- soldered the main EEPROM with Software DDC from the old board onto the new board if circuitboard have been replaced, in this case the DDC data does not need to be re-programmed.Additional information about DDC (Display Data Channel) may be obtained from Video Electronics StandardsAssociation (VESA). Extended Display Identification Data (EDID) information may be also obtained from VESA.1. An i486 (or above) personal computer or compatible.2. Microsoft operation system Windows 95/98/2000/XP.3. “ PORT95NT.exe, WinDDC_ setup” program.4. Software OSD SN Alignment kitsThe kit contents:a. OSD SN BOARD x1b. Printer cablex1c. VGA cable x1d. Digital cable x1e. 12V DC power source1. Install the “PORT95NT.EXE”, and restart the computer.2. Install the “WinDDC_ setup”3. Connect the DDC board as follow:(Take philips 190B8 for example)Note: Pin5 of the VGA cable which connects to the monitor should be cut off.Connect to thePC LPTWhen you write analogEDID, Connect this portto the Philips 190B8’sVGA port12V InputWhen you write digitalEDID, Connect this portto the Philips 190B8’s DVIport |
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