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LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
About 130mVp-p?
Change RF3100 (U104)
Check the pk-pk level at
R124 ,R127, R128, R129
With Oscilloscope.
Refer to Figure 4-36-1
Yes
No
Set the CW Mode of the Agillent
8960
Feed a CW signal at
2142
MHz
Set the RX Continuous mode
Check the Mean level at
R124 ,R127, R128, R129
With Oscilloscope.
Refer to Figure 4-36-1
Yes
No
Check the frequency at
R124 ,R127, R128, R129
With Oscilloscope.
Refer to Figure 4-36-2
Yes
No
Verify whether the signal
was similar as Figure
4-36-2 with Oscilloscope.
Yes
No
About 160mV?
About 2MHz?
Similar?
Check Next Stage
Change RF3100 (U104)
Change RF3100 (U104)
Change RF3100 (U104)
TP Command
MODE=4
WRXC=10700
Содержание KU580
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