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6. BLOCK DIAGRAM
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Main RF signal
Control signal
Main RF signal
Description
Comment
GSM 900 TX
GSM 900 TX RF Signal
DCS TX
DCS TX RF Signal
PCS TX
PCS TX RF Signal
W- TX
UMTS2100 TX RF Signal
GSM 900 RX
GSM 900 RX RF Signal
DCS RX
DCS RX RF Signal
PCS RX
PCS RX RF Signal
W- RX
UMTS2100 RX RF Signal
TX_I/Q
I/Q for Tx of RF
RX_I/Q
I/Q for Rx of RF
Con trol sign al
Description
Com ment
UMTS PA_CTL signal
PA_R1 UMTS Tx Hi gh/Lo w Power Con trol
PA_ON Power
Am p.
Enable
GSM PA_CTL signal
GSM_PA_BAND DCS or PCS /GSM Mode Selection
GSM_PA_EN Power Amp. Gain Control Enable
GSM_PA_RAMP Po wer
Am p.
Gain
Con trol
RF Tranceiv er_CTL sign al
TX_ON RF Enable Signal
SSBDT_RTR Bidirec tional
SSBI
Data
TX_AGC_ADJ UMTS Transmit Gain Control
FEM_CTL signal
ANT_SEL 0,1,2 Ant S witch Module Mod e Selection
UMTS,
GSM900Tx/Rx,
DCS Tx/Rx,
PCS Tx/Rx
Summary of Contents for KF700
Page 1: ...Service Manual Model KF700 Service Manual KF700 Date May 2008 Issue 1 1 Internal Use Only ...
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