Checking Tcxo Block - LG -E405 Service Manual

4.3 Checking TCXO Block

The output frequency (19.2MHz) of TCXO (X2000) is used as the reference one of RTR6285 and PM8029 internal VCO.
TCXO Circuit
Clesed to TCXO
R2003
TRK_LO_ADJ
TP2
LGE Internal Use Only
TP2
TP3
X2000 X1G003581002700
1
100
VC
5
TP1
2
C2009
GND
10n
19.2MHZ
TP1
C2005
1n
4
VCC
6
TP2
3
OUT
C2017
- 31 - Copyright © 2012 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
TP1
VREG_TCXO_2.85V
C2006
0.1u
TCXO_PM_19.2MHZ
1n
TCXO_RTR_19.2MHZ
TP3
Only for training and service purposes