LG KG270 Service Manual page 47
Service manual
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Also See for KG270:
- Service manual (125 pages) ,
- User manual (69 pages) ,
- Manual (113 pages)
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4. TROUBLE SHOOTING
RX Trouble
(1) Checking VCTCXO Circuit
TEST POINT
CIRCUIT
( NX3225SA(W-188-34-7)
SW400
FL400
FL401
U400
U102
X101
X101
NX3225SA
2V8_VIO
R107
NA
CHECKING FLOW
Is the waveform
of Pin3 similar to
DCXO(X101)
Waveform?
DCXO Circuit is OK.
See next page to check
PLL Circuit.
Waveform
Waveform
Pin 2
Pin 1
- 48 -
No
Replace
X101
Yes
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