LG KM710 Service Manual - Page 42
RF Part Technical Brief
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4. Trouble Shooting 4.1 RF Part Technical Brief 4.1.1 RF Part Component X400 U401 U400 U403 U402 ] Part Description SW400: Mobile Switch Connector U400: BT_CLK Buffer U401: SysCLK Buffer U402: RF Transceiver(B6PLD) U403: Power Amplifier Module(RPF09036B) FL400: Front End Module(LMSP43MA-501) X400: DCXO-26MHz Clock FL400 SW400 4.1.2 Part Description 4.1.2.1 Regulator Supply 2.8V to RF part C440 C441 U403 VBAT VCC_SYN REGEN C439 1u C440 4.7u U403 RT9011-MMPQW 1 2 VIN 3 EN1 EN2 4 NC1 8 VOUT1 7 VOUT2 NC2 6 5 9 PGND GND C_VCCRF C441 4.7u Regulator Circuit Diagram Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 43 - LGE Internal Use Only
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc.
All right reserved.
Only for training and service purposes
4. Trouble Shooting
- 43 -
4.1 RF Part Technical Brief
4.1.1 RF Part Component
4.1.2 Part Description
4.1.2.1 Regulator
Supply 2.8V to RF part
U402
SW400
U400
U401
FL400
U403
X400
]
Part Description
SW400: Mobile Switch Connector
U400: BT_CLK Buffer
U401: SysCLK Buffer
U402: RF Transceiver(B6PLD)
U403: Power Amplifier Module(RPF09036B)
FL400: Front End Module(LMSP43MA-501)
X400: DCXO-26MHz Clock
<Fig.17> Regulator Circuit Diagram
C439
1u
2
EN1
EN2
3
5
GND
NC1
4
NC2
6
PGND
9
VIN
1
VOUT1
8
7
VOUT2
RT9011-MMPQW
U403
4.7u
C440
VBAT
C_VCCRF
VCC_SYN
4.7u
C441
REGEN
U403
C440
C441