Back Light - Samsung SGH-R200 Service Manual

5-10 Back Light

LCD BACKLIGHT
Q107 pin 3 = "L" ?
LCD backlight on ?
END
5-18
Backlight does not work
Backlight "ON" mode
in the menu?
Yes
R167 = "H" ?
Yes
No
Yes
No
Yes
Resolder R167,R166
or resolder Q107
Resolder
R149,R118,R168,R184,
or Replace PBA
No
Select backlight "ON" mode
No
GPO1 by test S/W
KEY PCB LED
Resolder R167,R166
or replace Q107
Replace LCD
No
No
Flow Chart of Troubleshooting and Circuit Diagrams
Q107 pin 3 = "L" ?
Yes
Key PCB LED on ?
Yes
END