LG KP260 - Page 49

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4. TROUBLE SHOOTING
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(3) Checking PAM Control Signal
U401
TP7
TP8
R500 47
27p
C507
1K
R502
C505
39p 27p
C506
R501 47
TX_RAMP
PA_EN
PA_BAND
TEST POINT CIRCUIT
WAVEFORM
Similar?
Yes
No
Check TP7,8
Any Major Difference or not
¨
Similar?
Yes
No
Go to Next Step
Similar?
Yes
No
Re-download
S/W
Check if there is
Any Major Difference or not
¨
Refer to Graph 4.3.3
Graph 4.3.3
Figure 4.3.3
CHECKING FLOW
TP7
TP8