User Guide

NSD-5
10. Troubleshooting PAMS Technical Documentation
Page 40 Nokia Corporation Issue 1 05/02
1900 PCS Tuning Rx IF AGC
Description of Test
The RIF and TIF AGC is approximately a second-order curve. This curve is split into
16 segments for both transmitter and receiver. Offset and slope values are stored in
2
Measure the difference RF power level at N602 pin 2 and RF power level at N602 pin 4
<12dB
>4.7V
<4.9V
<2.5V
Measure voltage at V604 pin3
Measure voltage at V604 pin 3
Measure voltage at V603 pin 4
Replace V604
Start
StartReplace V602
END
See baseband troubleshooting processo
r
See baseband troubleshooting processo
r
Yes
Yes
Yes
Yes
No
No
No
No