Table of Contents
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Checking Flow
START
Turn on the phone
Is the voltage level +VPWR
(R319,R337,R305,R313,R316,R328,R390,R391)
3.2-4.2V?
Check LEDs' directions
Check the signal level at
KYPD_EN=LOW?
Change Board
NG
OK
No
Yes
NG
OK
No
Charge or Change Battery and try again
Check the soldering of each R or
Replace them.
Re-solder or replace LEDs
Replace QSC
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