LG LG600G Service Manual page 40

Checking Flow
No Call connection is needed
Check SW500 Pin ANT,RF
with RF Cable connected.
Check SW500 Pin ANT,RF
with No RF Cable Connected
Check C500,C502,C503
Check whether Ant SW
Set as RX mode
Refer to Table 4.2.2
Check RF Level of
U501 Pin.17(for GSM) &
U501.19(for PCS)
For this RF Level test case,
RX Stand alone Mode is needed
refer to chapter 10
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
For these 2 test case,
Open
Short
Check V_LOGIC,
TX_EN, BS
Pin 17 : ~ -62dBm
Pin 19 : ~ -63dBm
Ant SW & Mobile SW is OK
See next Page to check
Rx I/Q Signal
4. TROUBLE SHOOTING
No
Changing SW500
Yes
No
Changing SW500
Yes
No
Yes
No Changing U501
Yes
MODE ANT_SW1
GSM850 RX H
PCS1900 RX H
GSM850 TX H
PCS1900 TX H
- 41 -
Changing the Board.
PA_EN PA_BAND
L L
L H
H L
H H
LGE Internal Use Only