Speaker/Receiver Trouble Shooting (Common Path) - LG KE590 Service Manual

4.10 Speaker/Receiver Trouble Shooting (Common Path)

Disassemble the slide case of phone.
Check the resistance between
SPK_RCV_P & SPK__RCV_N of the Speaker
With the DVM ~ 8 ohm_
Disconnect The F-PCB from
the
Main Board.
Check the resistance between
#58 & #59 of the F-PCB
Check the soldering status
Of CN202 of main -board
Check the output(C218) of U202
Check the Speaker
contact PAD of the F-PCB
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Only for training and service purposes
START
YES
With the DVM 10 ohm
YES
Play the Ring tone.
The signal is a digital
YES
4. TROUBLE SHOOTING
NO
Speaker has a
problem.
Replace the Speaker.
NO
Check F-PCB connector
If Connector is not a
problem,
Change the F-PCB
NO
Replace the component
NO
1
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SPK__RCV_N
SPK__RCV_P
LGE Internal Use Only