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LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
5. TROUBLE SHOOTING
High Band GMSK Tx
1
1
0
Active
High band EDGE Tx
1
1
1
X
X= don’t care
Fig 14 Debugging flowchart of PAM circuit
9
When EGSM band called, it must seem as below.
Is PAM
Control Signal
OK?
Replace
PCB
Check the next part
YES
NO
PAM Circuit
Is PAM Output
OK?
Replace
PAM
NO