LG G5300 Service Manual page 62

4-3-2 Checking VCTCXO Circuit
• If you already check this point while checking RX part, you can skip this test.
2V7_VTCXO
R424
AFC
15K
Graph 4-9. VCTCXO 13MHz
X401.4
C454
2.2u
X401
2012
13MHz
GND VCC
C457
2 4
1000p
CTL OUT
1 3
- 61 -
4. TROUBLE SHOOTING
X401.3
U403
SN74AHC1GU04DCKR
5
C455
2 VCC 4
IN OUT
GND
1000p
3
R426 1M
Graph 4-10. VCTCXO 2.7V
R425
13MHZ
100