6600 Insert Simcard and Keypad Failure Solved

6600 Insert Simcard and Keypad Failure Solved.....

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Good afternoon mga master........
Share ko lang yung nagawa kung 6600 na insert simcard at keypad failure......
Ang una kung ginawa ay yung insert simcard and here are procedures......


Phone History: Drop Unit
Action Taken: Resolder Simcard Reader, Reheat Simcard IC.....
Result: No luck....
Last Action: Replace Sim IC taken from 6020 board........
Result: Okay na yung unit mga boss........

NOTE: I used 6020 simcard IC because they are the same mga masters......

And here are the screenshots........





heto na yung unit mga masters after kung palitan yung sim ic.......



Okay na po yung unit kaso may problema pang isa.........Yung keypads na 3 6 9 ayaw gumana mga boss.........Kaya heto ang ginawa ko

Action Taken: reheat upper keypad ic.........
Result: No luck
Last Action Taken: Replace upper keypad IC
Result: Problem Solved.......

here are the screenshots mga boss......pasensya na kayo mga boss kasi medyo malabo yung screenshots.......







working na po yung unit mga masters..........

Additional reference mga masters para sa keypad ic connections..........And i use this as my guide...........


6600 Keypad ic

Upper IC Connection pin.
1. Gnd
2. 3,6,9,#
3. 1,4,7,ABC
4. call.4,5,6
5. clr,ABC.#
6. + v led
7. Right soft key
8. Menu.left,Soft,key
9. Joystick {Right}
10. Joystick {Left}


Lower IC Connection pin.
11. Joystick {center}
12. Joystick {down}
13. Joystick {Up}
14. lefsoft key, Right soft key
15. Gnd
16. 1.2.3.4
17. End call 7.8.9
18. Menu
19. 2.5.3
20. Call, End Call, Clr.o
DONE