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4. TROUBLE SHOOTING
Checking Flow
Check C630,C631
Check whether Ant SW
Set as TX mode
Refer to Graph 5
Refer to Table 4-2
Check RF Level of FL600
Pin 12(for GSM850/EGSM)
& Pin 10(for DCS/PCS)
Check SW600.ANT, RF with RF
Cable connected.
Check SW600.ANT,RF
with RF Cable disconnected
LGE Internal Use Only
For the test,
TX Stand alone Mode is needed. Refer to
chapter 11 (PL=7 for GSM850/EGSM,
PL=2 for DCS/PCS)
Check
VC1_GSM850/EGSM
VC2_DCS/PCS
Yes
Yes
Open
Yes
Short
Yes
END
VC1_GSM850/EGSM
GSM850/EGSM_TX
DCS/PCS_TX
GSM/DCS/PCS RX
Table 4-2
- 50 -
No
Changing board
No
Go to nest page checking
PAM control signal
No
Changing SW600
No
Changing SW600
VC2_DCS/PCS
HIGH
LOW
LOW
HIGH
LOW
LOW
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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