LG KF750 Service Manual page 209

9. PCB LAYOUT
<5M CAM Connector>
5M camera operation
<Backup Battery>
RTC clock operation
<Memory (2G/1G)>
<DBB (DB3150) >
<Bluetooth IC>
B/T & FM radio operation
<X-tal>
RTC clock (32.768kHz)
<SideKey>
Volume up/down operation
<PMIC & Audio IC>
Check output of LDO
Check audio path
<Battery Connector>
Power supply
LGE Internal Use Only - 210 -
<DC/DC for EL>
EL operation
<Touch LDO>
Touch operation
<LCD LEO>
LCD operation
<USB Transceiver>
USB operation
<Headset Mic LDO>
Headset operation
<Headset filter>
Headset operation
<Headset filter>
Headset operation
<Speaker Amp>
Speaker operation
<EMI/ESD filter>
UART/Charging operation
<MiainKey Connector>
Numeric Key & SideKey
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