![background image](http://html.mh-extra.com/html/samsung/sgh-2488/sgh-2488_service-manual_1190241027.webp)
5. Schematic Diagrams
5-1 Top Level
5-1
Schematic Diagrams
TXPOWER
IRXP
GSMTX1
+3VPLL
+3VMD
_BANDSEL
+3VDEMOD
+3VLNAGSM
+3VLNADCS
TXEN2
RXEN_FEGSM
SYNEN
AFC
DCSTX1
ITX
AFC
VMID
+VBATT
IRXP
DCSTX2
CLK13M
RXEN_FEDCS
STARTUP_VOLTS
+3VLO1
SYNCLK
+3VPLL
STARTUP_VOLTS
DCSTX2
_RESET
TXEN2
+3VTX
DEMODEN
+3VDEMOD
ANT
BANDSEL
QTX
SYNDATA
+3V_RTC
VAGC
ANT
+3VDC
ITX1
QRXP
DCSTX1
POWER_ON
SYNEN
RXEN_FEGSM
+3VLO2
AVCC
POWER_ON
+3VX
SYNCLK
SYNDATA
VMID
+3VDC
GSMTX2
+3VBB
CLK13M
VAGC
QTX1
_BANDSEL
_RESET
+3VLNADCS
+3VLNAGSM
+3VLO1
ITX1
+3VLO2
+3VMD
+3VX
GSMTX1
+VBATT
BANDSEL
ITX
TXPOWER
QRXP
QTX1
TXEN1
TXEN1
QTX
RF_ON_OFF
DEMODEN
RXEN_FEDCS
GSMTX2
+3V_RTC
RF_ON_OFF
+3VTX
+3VBB
AVCC
+VBATT
_RESET