Only For Training And Service Purposes - LG KP210 Service Manual

(3) Checking PAM Control Signal
TEST POINT
U401
Figure 4.3.3
TP16
WAVEFORM
CHECKING FLOW
Check TP15,16
Check if there is
Any Major Difference or not Any Major Difference or not
¨ Refer to Graph 4.3.3 ¨
Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

TP15
Graph 4.3.3
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4. TROUBLE SHOOTING
CIRCUIT
TP15
TP16
C402 C403 C404
39p
68p 27p
No No No
Similar? Similar? Similar?
Yes Yes Yes
Go to Next Step
R406 100ohm
PA_BAND
R407 100ohm
PA_EN
R410 68
TX_RAMP
R411 100ohm
ANT_SW1
C405
27p
Re-download
S/W
LGE Internal Use Only