LG KG290 - Page 59

LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
- 60 -
Check C544,C545,C546
Check whether Ant SW
Set as RX mode
Refer to Table 4.2.2
Yes
Check RF600 Pin ANT,RF
with RF Cable connected.
Open
Yes
Changing RF 600
Check RF600 Pin ANT,RF
with No RF Cable Connected
Short
Yes
Changing RF 600
For these 2 test case,
No Call connection is needed
No
No
Changing the Board.
Check RF Level of
FL500.16(for EGSM) &
FL500.14&12(for DCS&PCS)
Ant SW & Mobile SW is OK
See next Page to check
Rx I/Q Signal
Pin 16 : ~ -62dBm
Pin 14 & 12 : ~ -63dBm
No
Changing FL500
Yes
No
For this RF Level test case,
RX Stand alone Mode is needed
refer to chapter 10
Check Vctrl 1,2,3 & Vdd
CHECKING FLOW
Table 4.2.2
RX Mode EGSM DCS PCS
Vctrl 1 Off Off Off
Vctrl 1 On Off Off
Vctrl 3 Off On Off