Volume Keys Don't Operate - Samsung GT-I8150 Service Manual

Level 3 Repair
8-3-8. KEY Function (volume key/ power key)
- volume key

volume keys don't operate

press volume up key,
KBC(1), KBR(2) is
Active Low?
press volume down
key,
KBC(1),KBR(1) is
Active Low ?
PMU key Signal
KBC(1), KBR(1) is
Active Low ?
Replace TAC401, TAC402, U501
Yes
Yes
Yes
Yes
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
No
replace VOL_UP
No
replace VOL_DOWN
No
replace PMIC (U501)
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