LC-32LE340/343
LC-40LE340/343
TROUBLESHOOTING
47
18.3 Stby-Microcontroller file update
1. Please copy Standby micro-controller file to USB root.
2. You have to use Service Menu for standby micro-controller files update.
3. To access the service menu push “menu” button and enter the password “4725” while
menu icons are on screen.
4. Plug the USB to TV.
5. Please choose “USB Operations” tab to update standby-micro sw file by using remote
controler.
6. Please wait approximately for 30 seconds
To reach the latest sw files please use;
https://www.vestelservice.com/100359/New_Projects/Sharp/Sharp_2011/9_Customer
_support/SW/
19. Troubleshooting
Problem: If TV is working, led is normal and there is no picture and backlight on the panel.
Possible couses: Backlight pin, dimming pin, backlight supply, stby on/off pin
BACKLIGHT_ON/OFF pin should be high when the backlight is ON. R185 must be low
when the backlight is OFF. If it is a problem, please check Q131 and the panel cables.
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Dimming pin should be high or square wave in open position. If it is low, please check S32
for BRCM side and panel or power cables, connectors.
19. Troubleshooting
Problem: If TV is working, led is normal and there is no picture and backlight on the panel
Possible causes: Backlight pin, dimming pin, backlight supply, stby on/ off pin.
BACKLIGHT ON/OFF pin should be high when the backlight is ON. R185 must be low qhen the backlight
Is OFF. If it is a problem, please check Q131 ant the panel cables.
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LC-32LE340/343
LC-40LE340/343
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