Lcd Backlight - Samsung X200 - SGH Cell Phone Service Manual

SGH-X200 Flow Chart of Troubleshooting

2-1-6. LCD backlight

Backlight does not work
Backlight ON "TIME"
mode in the menu?
Check conecting
between PBA and LCD
Check U204 pin #7 =
LED_EN
LED-
R258
Yes
conector
Yes
10V ?
Yes
END
R241
R242
R257
C224
No
Select backlight "15 sec" mode
No
No
Check the LCD
U204
VIN 8
1
GND
EN OUT
2 7
L201
3 ILED SW
6
PGND
4 5
FB
9
2-10
Check FPCB
VBAT
LED+
C225
C223