5. Trouble shooting
5.14.1 Checking DCXO Circuit
X100
1pin : 26MHz
DCXO
Is the waveform | No |
of 1pin Similar to Fig.6? | Replace X100 |
|
Yes
DCXO Circuit is OK.
See next page to check
PLL Circuit.
CHG_EN
X100
NX3225SA
4 | GND2 | HOT2 | 3 |
| |||
1 | HOT1 | GND1 | 2 |
26MHz
SIM_DATA
SIM_CLK
SIM_RST
1pin
DCXO Cicuit
G19 CLKOUT0
U4 REFR
W7 XOX
W8 XO
V10U9 CC_IO
V9 CC_CLK CC_RST
1pin
DCXO Waveform
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Only for training and service purposes |
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