- 103 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
5. TROUBLE SHOOTING
Check TP1 of SW400
with RF Cable and TP2 of C420
TP1 Signal same
as TP2?
Replace Mobile SW
(SW400)
Yes
No
Yes
Mobile SW & FEM is OK.
Check Antenna.
Replace BB CHIP (U101)
Control Signal is
OK
?
No
Yes
Check TP3, TP4 of FL400
?
Replace FEM (FL400)
TP5 Signal is
OK ?
No
Yes
Checking Flow
EGSM TX
Figure 30 Mobile SW
Figure 31 FEM Control Signals
TP1(ANT SW1)
TP2(ANT SW2)
Содержание AR140B
Страница 1: ...Service Manual Model GD310 Internal Use Only Service Manual GD310 Date November 2009 Issue 1 0 ...
Страница 127: ... 128 LGE Internal Use Only Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 145: ... 146 LGE Internal Use Only Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes ...