Table of Contents
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Flow Chart of Troubleshooting
9-10. Key Back Light
Main Key LED does not work
Yes
No
Is Backlight Set "Always
Set " Backlight" on "Always On"
On" in the menu?
Yes
No
C513 = 3.3V ?
Replace U507
Yes
No
Replace UCP300(MSM6250A)
U507 pin6=2.8V?
Yes
END
9-18
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