Only For Training And Service Purposes - LG KG290 Service Manual

Checking Flow
Check C544,C545,C546
Check whether Ant SW
Set as TX mode
Refer to Graph 4.3.2
Refer to Table 4.3.2
Check RF Level of
FL500 Pin 6(for EGSM) &
Pin 8(for DCS&PCS)
Check RF600.ANT, RF with RF
Cable connected.
Check RF600.ANT,RF
with RF Cable disconnected
Copyright © 2007 LG Electronics. Inc. All right reserved.

Only for training and service purposes

For the test,
TX Stand alone Mode is needed. Refer to
chapter 10 (PL=7 for EGSM, PL=2 for
DCS&PCS)
Check Vctrl 1,2,3 & Vdd
Yes
Pin6 : ~29.5dBm
Pin8 : ~26.5dBm
Yes
Open
Yes
Short
Yes
END
TX Mode EGSM
Vctrl 1 On
Vctrl 2 Off
Vctrl 3 Off
Table 4.3.2
- 65 -
4. TROUBLE SHOOTING
No
Changing board
No Go to 4.3.4 Checking PAM
control signal
No
Changing RF600
No
Changing RF600
DCS/PCS
On
On
Off
LGE Internal Use Only