LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
- 47 -
Check C402,C404,C405
Check whether Ant SW
Set as RX mode
Refer to Table 4.2.2
Yes
Check SW501 Pin ANT,RF
with RF Cable connected.
Open
Yes
Changing SW401
Check SW501 Pin ANT,RF
with No RF Cable Connected
Short
Yes
Changing SW401
For these 2 test case,
No Call connection is needed
No
No
Changing the Board.
Ant SW & Mobile SW is OK
See next Page to check
Rx I/Q Signal
No
For this RF Level test case,
RX Stand alone Mode is needed
refer to chapter 10
Check Ant_SW1,
PA_EN, PA_BAND
CHECKING FLOW
Table 4.2.2
MODE
ANT_SW1
PA_EN
PA_BAND
GSM850 RX
H
L
L
PCS1900 RX
H
L
H
GSM850 TX
H
H
L
PCS1900 TX
H
H
H
Содержание KP210
Страница 1: ...Date February 2008 Issue 1 0 Service Manual Model KP210 KP215 Service Manual KP210 KP215 ...
Страница 101: ...LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 102 ...
Страница 107: ... 108 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 121: ...LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 122 ...
Страница 138: ...Note ...
Страница 139: ...Note ...