- 112 -
LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
5. Trouble shooting
GM310f service manual
5.18.4 Checking WCDMA TX part(WCDMA2100/900)
Checking Flow
Is the level
of TP7~8 or TP13 same to Table1 ?
TP6 : check VBAT line
Check
TP4 or TP11 level(0~5dBm)?
TP4 or TP11 level>=TP5-1.5dBm?
NO
YES
YES
Setup Test Equipment
Cell Power =
- 60dBm
UL CL PWR Crtl
Parameter=All up bits
WCDMA Tx Path
is
OK
Check U1004 or
Check FL1003 or FL1006
TP3 or TP10 level 25.5dBm over?
YES
NO
Check U1007
NO
Check TP2 or TP9
TP2 or TP9 level 24dBm over?
Check TP1
TP3 level 22dBm over?
Check FL1004 or FL1007
NO
Check FL501(FEM)
Checking Flow
NO
YES
YES
Setup Test Equipment
Cell Power =
60dBm
WCDMA Tx Path
is
OK
Check TP3 or TP10
YES
NO
NO
Check TP1
TP3 level 22dBm over?
NO
Check FL501(FEM)
TP7~8 or TP13
:Check U103
Содержание GM310
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