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HannStar HW191A Service Manual
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Contents
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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 HW191A_XY _HSM Page No. 22 / 72Document No. Revision07/08/13The 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.1) MCU initialize.2) Is the EPROM blank?3) Program the EPROM by default values.4) Get the PWM value of brightness from EPROM.5) Is the power key pressed?6) Clear all global flags.7) Are the AUTO and SELECT keys pressed?8) Enter factory mode.9) Save the power key status into EPROM.Turn on the LED and set it to green color.Scalar initializes.10) In standby mode?11) Update the lifetime of back light.12) Check the analog port, are there any signals coming?13) Does the scalar send out an interrupt request?14) Wake up the scalar.15) Are there any signals coming from analog port?16) Display "No connection Check Signal Cable" message. And go into standby mode after the messagedisappear.17) Program the scalar to be able to show the coming mode.18) Process the OSD display.19) Read the keyboard. Is the power key pressed?022-83718162www.chinadse.org022-83715667 |
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