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4.8.2 Speaker Trouble
Checking Flow
START
Does sine wave appear
at C206, C207?
Yes
Connection
between FPCB and
CN701 is OK?
Yes
Soldering between
speaker and board
is OK?
Yes
Cabls of SPK
are OK?
Yes
Speaker OK
Enter into Engineering Mode and
go to menu "Baseband
No
SPK_EN signal
is high?
Reconnect
Yes
FPCB to
No
CN701
V_SRAM
is 2.8?
No
Resolder
Yes
Cables
Melody IC is out of order.
Change the U201.
No
Change
the SPK
- 57 -
4. TROUBLE SHOOTING
Alert
Ring"
No Resolder the U203
otherwise Change it.
No
Resolder the U201
otherwise Change it.
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