Table of Contents
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The voltage of R116
is 2.5V?
Yes
The soldering of
C105 is OK?
Yes
Connection is
between FPCB and
CN101 is OK?
Yes
A few hundreds
of mV of signals are
measured ?
No
The MIC is out of order.
Change the MIC.
Connect the handset to
network equipment and
setup call.
No
Check the signal level at pin
1,2 of the MIC after putting
audio signal into the MIC.
No
Resolder
the C105
No
Reconnection of
FPCB and Keypad
YES
-67-
The soldering of R330,
R321 is OK?
Yes
ABB is out of order.
Change the board.
Yes
Connection is
between FPCB and
CN402 is OK?
Yes
The soldering
of L301, L302, C327,
C330, C326, C331
and C328
is OK?
No
Resolder the
R330, R321
No
Reconnection of
FPCB and Keypad
Resolder the
No
L301, L302, C327,
C330, C326, C331
and C328
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