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4. TROUBLE SHOOTING
4.19.1. LCD Lighting LED Trouble Shooting
NO
Is the Voltage level VBAT
3.35 ~4.2?
Backlight will work properly
START
YES
Check the soldering of U600 not
working
NO
Are all LEDs
LED_C1~5, Navi_LED_1
Working?
Charge Battery
YES
LCD_BL_CTRL of U101(Main)
is Working?
YES
Check the condition
If problem, Replace U101(Main)
NO
YES
NO
Check the LCD display
Trouble shooting
Go to LCD Display Trouble
shooting