Only For Training And Service Purposes - LG KP175 Service Manual

4. TROUBLE SHOOTING
(1) Checking Crystal Circuit
TEST POINT
CIRCUIT
WAVEFORM
Graph 4.2.1(a)
LGE Internal Use Only
CHECKING FLOW
X500
R706
2V75_VVCXO
- 42 -
Yes
26 MHzO.K?
No
Change X500
R706
R514
10K
C512
0.1u
C513
0.1u
Graph 4.2.1(b)
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Crystal Circuit is OK
See next Page to check
Mobile SW e
0
AFC

Only for training and service purposes