Wednesday, September 2, 2015

Samsung GT-C3322 Metro Duos Key Input not Working Solution

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 Samsung GT-C3322 Metro Duos Key Input not Working Solution Shematic,Diagram , Circuit 



 Samsung GT-C3322 Metro Duos Key Input not Working Solution Step by Step


Step 1

SIM Switch key
working?

Check the TACT300 (crack, open, etc) &
change the TACT300

Step 2

Function Key &
3x4 Key working?

Check Dome sheet (crack, open, etc) &
Change Dome sheet & UCP20

Step 3

Key LED working?

Check U302, LED300~305 (crack, open, etc)
& Resolder U302, LED300~305, R323~R328

Step 4


Check the S/W setting
(key auto lock, etc)





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