LG MG210 Service Manual page 72

2. Sending Path problem
equipment to the echo mode.
The voltage at R220
is 1.1V ~ 1.3V?
Yes
A few
tens or hundreds
of mV of signals at C243
are measured ?
Yes
The ABB is out of order.
Change the board.
Set audio part of the test
No
Resolder the
R218,R220
The
No
soldering of C243,L200
and L201 is OK?
Yes
The
soldering of CN200
is OK?
Yes
The earphone is OK?
Yes
The ABB is out of order.
Change the board.
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4. TROUBLE SHOOTING
No
Resolder
the C243,L200,L201
No
Resolder
the CN200
No
Change the
Earphone.