Back Light - Samsung SGH-R225 Service Manual
Dual band mobile cellular phone
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Also See for SGH-R225:
- User manual (70 pages) ,
- Quick reference card (2 pages) ,
- Manual del usuario (65 pages)
Table of Contents
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5-10 Back Light
LCD BACKLIGHT
Q403 pin 3 = "L" ?
Yes
LCD backlight on ?
Yes
END
5-18
Backlight does not work
Backlight "ON" mode
in the menu?
Yes
R575 = "H" ?
Yes
No
No
Resolder R575,R579
or resolder Q403
Resolder
R745,R572,R746,R573
R747,R574,R748,R725
or Replace PBA
No
Select backlight "ON" mode
No
GPO1 by test S/W
KEY PCB LED
Resolder R575,R579
or replace Q403
Replace LCD
No
No
SGH-R225 Flow Chart of Troubleshooting and Circuit Diagrams
Q403 pin 3 = "L" ?
Yes
Key PCB LED on ?
Yes
END
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Table of Contents
