Nokia 7250, 7250i Service Manual
CCS Technical Documentation
System Module
Schematics
NHL-4J/NHL-4JX
Issue 2 06/03
Nokia Corporation
A-23
RF
1
2
3
4
5
6
D
C
B
A
RX_OUTM_EGSM
RX_OUTM_PCS
RX_OUTP_DCS
RX_OUTP_EGSM
RX_OUTP_PCS
TX_IN_DCS
TX_IN_EGSM
VANT_1
VANT_2
VANT_3
VR1
VR2
VR3
VR4
VR5
VR6
VR7
VTXLO_G
VTXLO_P
VTX_B_G
VTX_B_P
VrefRF01
VrefRF02
FRONT_END
LNAB_P
LNA_P
RX_OUTM_DCS
TXIM
TXIP
TXP
TXQM
TXQP
VANT_1
VANT_2
VANT_3
VB_DET
VCTCXO
VCTCXOGnd
VC_1
VC_2
VPCTRL_G
VPCTRL_P
VP_D_SEL
LNAB_G
LNAB_P
LNA_P
OUTM_G_TX
OUTM_P_TX
OUTP_G_TX
OUTP_P_TX
RFBusClk
RFBusData
RFBusEna1
RFTEMP
RXI
RXQ
Reset
TXA
TXC
HELGA
AFC
DET
INM_D_RX
INM_G_RX
INM_P_RX
INP_D_RX
INP_G_RX
INP_P_RX
LNAB_D
RFout_1800_1900
RFout_900
VBAT
VPCTRL_1800_1900
VPCTRL_900
VR6
VTXB_1800_1900
VTXB_900
VTXLO_900
rf9219
POWER_AMP
BANDSEL_1800_1900
DC_sense
DET
Iref_1800_1900
Iref_900
Mode
RFinM_1800_1900
RFinM_900
RFinP_1800_1900
RFinP_900
TXA
TXC
TXP
TXIP
TXIM
TXQP
TXQM
AFC
VCTCXOGnd
RFBusClk
RFBusData
RFBusEna1
Reset
VR1
VR2
VR3
VR4
VR5
VR7
VrefRF01
VrefRF02
RFTEMP
VCTCXO
RXI
RXQ
TXPWRDET
IPA2
IPA1
VBAT
VR6
Mode