Only For Training And Service Purposes - LG GM200 Service Manual

CHECKING FLOW
Check R513, R514, C512
Check whether Ant SW
Set as TX mode
Refer to Graph 4.3.2
Refer to Table 4.3.2
Check RF Level of
U502.27(for GSM850 & EGSM),
U502.29(for DCS&PCS)
Check SW501. ANT, RF
with RF Cable connected.
Check SW501.ANT,RF
with RF Cable disconnected.
LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.

Only for training and service purposes

For the test,
TX Stand alone Mode is needed. Refer to chapter
10 (PL=7 for EGSM&GSM850, PL=2 for DCS&PCS)
Check PA_EN, ANT_SW1 &
VBAT
Yes
Pin15 : ~29.5dBm
Pin10 : ~26.5dBm
Yes
Open
Yes
Short
Yes
END
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4. TROUBLE SHOOTING
No
Changing board
Go to 4.3.3 Checking PAM control
No
signal
No
Changing SW501
No
Changing SW501
Table 4.3.1
LGE Internal Use Only