LG F1200 Service Manual page 76
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Also See for F1200:
- User manual (288 pages) ,
- Circuit diagrams (7 pages) ,
- User manual (95 pages)
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(2) Checking DCXO circuits
Checking Points
Pin 28
Checking Flow
Check 26MHz X100.Pin1
Refer to Waveform
Check 26MHz U102.Pin28
Refer to Waveform
Check if there is any
Major Difference
X100
Pin 3
Similar ?
No
Yes
Similar ?
No
Yes
DCXO Circuit is OK
Go to the next stage
- 75 -
4. TROUBLE SHOOTING
U102
Replace X100
Replace U102
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Troubleshooting
