LG -600 Service Manual page 38

RF MAIN CHIP
U203 pin 48,1,3,4
I/Q signal check
I/Q signal >= DC 0.9V
& 0.3Vp-p
END
REMARKS
1. Call connection : TEM3 execution
ti
tms1
txpw 1 7 Enter
rfe 7
2. Spectrum analyzer : SPAN = 1MHz
VBW = 1MHz
RBW = 3MHz
Press the trace button of spectrum analyzer on checking
test point and press the max hold of spectrum analyzer
3. Oscilloscope : 500mV/div , 2ms/div
YES
YES
Enter
Enter
Enter
- 36 -
NO
U200 soldering check
U200 chip check
Ulysse-Nausica check