4
GND2
HOT1
1
3
HOT2
NX3225SA
X101
26MHz
GND1 2
XO
W8
W7
XOX
REFR
U4
G19
CLKOUT0
CC_CLK
U9
V10
CC_IO
V9
CC_RST
TP109
SIM_CLK
SIM_IO
SIM_RST
RPWRON
- 96 -
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
5. TROUBLE SHOOTING
5.12.3 DCXO circuit
Fig 4 Debugging flowchart of DCXO circuit
Fig 5 DCXO circuit (X100)
DCXO Circuit
Replace X100
DCXO is OK.
See next part.
YES
Is the waveform of
TP(X100) similar to Fig5?
NO
TP
TP