Checking Tcxo Block - LG L705ix Service Manual

4.2 Checking TCXO Block

The reference frequency (19.2MHz) from X100 (TCXO) is used in UMTS TX
part, and BB part.
TP2
VREG_TCXO_2.85V
TCXO_PM
TCXO_RF
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
TCXO
X700
OUT
3
VCC
4
19.2MHz
C703 C704
0.1u 1000p
C706 100p
- 65 -
4. TROUBLE SHOOTING
GND
2
R703 100ohm
VCONT
1
C705
0.01u
TP1
TP3
TRK_LO_ADJ
TP1 : C703
TP2 : R703
TP3 : C706
LGE Internal Use Only