Only For Training And Service Purposes - LG KG290 Service Manual

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

Only for training and service purposes