LG CE110 Service Manual page 83

4. TROUBLE SHOOTING
4.9.2 Speaker Trouble Shooting (Common Path)
ABB_SPK_EN signal is low?
LGE Internal Use Only
START(Speaker)
Check the signal
Of C216,R217
U100 Re-solder &
Yes
U101 Re-solder &
Yes
Check the signal
Of C221,C222
U200 Re-solder &
Yes
Check the signal of
CN200 41pin,42Pin
Yes
FCPB and LCD
Connection OK?
Yes
Cables of SPK/RCV
are OK?
Yes
Speaker is Operated
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SPK_EN Operating
0 Receiver Only
1 MIDI or SPK mode
No
Change
No
Change
No
Change
U201 Re-solder &
Change
Re-solder of
FPCB_CN3, CN2
SPK/RCV Re-Solder &
Change
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