How to enter Service Mode _ Software Upgrade _ Power Supply [SMPS] & Back-light Schematics (Circuit Diagrams) _ SANYO 19R30 - 19" LCD TV [STR-Y6453]
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* First press “INPUT” button, then in turn press “2 - 5 - 8 - 0” to access factory main menu.
* Press ▲/▼ to select item, then press ► to access.
* Press ▲/▼ to move upward or downward and select item.
* Press ◄/► to adjust.
* Press “MENU” to return to the previous screen.Software upgrade method
* Copy the provided “KU*.bin” file to USB device root category. Then change the file name to “ku19p.bin” or “KU19P.BIN”.
* Completely cut off the TV power by unplug the power cord from the power outlet. (Be sure to use buttons on the remote control or on the TV to completely discharge the TV after power off).
* Insert the USB device into the USB port. Keep holding any button (except POWER button) on the TV and then plug the power cord into the power outlet, after about 2-3s release the button, the software begins to upgrade automatically. Note that during upgrade the USB device cannot be removed and the TV cannot be power off.
* During the process operate according to hints provided on the screen. When complete, remove the USB device, unplug the power cord and then plug it again, then press POWER to turn on the TV.
* After software upgrade the TV must be performed initialization and ADC correction and white balance alignment again. Below are steps for initialization:
* Go to factory menu, select the third item “Feature & Adjust”.
Go to “Feature & Adjust” sub-menu, select “EEPROM Init” at the first line.
Press (RIGHT arrow button) to perform initialization. During the process the message “Please Wait” will be displayed. When complete, “OK” is displayed.
SMPS SCHEMATIC [CLICK ON THE PICTURES TO MAGNIFY]
BACK-LIGHT INVERTER
