Back Light - Samsung SGH-A200 Service Manual
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Also See for SGH-A200:
- Owner's manual (73 pages) ,
- Quick start manual (4 pages) ,
- Features & specifications manual (2 pages)
Table of Contents
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5-10 Back Light
LCD BACKLIGHT
Check the CN105 pin 17 = "H" ?
LCD backlight on ?
END
Flow chart of Troubleshooting and Circuit Diagram
Backlight does not work
Backlight "ON" mode
in the menu?
Yes
R141 = "H" ?
Yes
No
Yes
No
Yes
Resolder R141, R149
Resolder Q107
Resolder CN503
or Replace Key PCB
No
Select backlight "ON" mode
No
GPO1 by test S/W
KEY PCB LED
Check the
CN105 pin 17
Replace EL sheet
No
No
No
Q107 pin 1 = "H" ?
Yes
Q107 pin 3 = "L" ?
Yes
Key PCB LED on ?
Yes
END
5-17
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