SGH-X150 Flow Chart of Troubleshooting
2-
12
2-1-7. LCD backlight
Backlight ON "TIME"
mode in the menu?
Backlight does not work
Check connecting
between PBA and LCD
connector
Select backlight "15 sec" mode
Check FPCB
END
No
Yes
No
Check U204 pin #1
(C225) = 10V ?
Check the LCD
Yes
Yes
No
3
FB
GND
2
SW 6
5
VIN
U204
C224
TA223
VBAT
L201
R242
C225
R256
R257
R241
LED_EN
LED-
LED+
Summary of Contents for SGH-X150
Page 11: ...SGH X150 Flow Chart of Troubleshooting 2 7 1 1 2 ...
Page 13: ...SGH X150 Flow Chart of Troubleshooting 2 9 1 2 ...
Page 15: ...SGH X150 Flow Chart of Troubleshooting 2 11 Main PCB 1 LCD PCB 2 ...
Page 18: ...SGH X150 Flow Chart of Troubleshooting 2 14 5 1 2 3 4 ...
Page 20: ...SGH X150 Flow Chart of Troubleshooting 2 16 1 2 3 4 5 ...
Page 33: ...6 1 6 SGH X150 Block Diagrams ...