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Level 3 Repair
8-24
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8-3-8. KEY Function (volume key/ power key / touch key)
- volume key
volume key don't operate
No
Yes
replace TAC600
replace TAC601
Yes
No
press volume down
key,
KBC(1),KBR(1) is
Active High ? (V601)
Replace TAC600, TAC601, U807
replace PDA PMU (U807)
Yes
No
PDA PMU key Signal
KBC(1), KBR(1) is
Active High ?
press volume up key,
KBC(1), KBR(2) is
Active High ? (V600)
Yes