User Guide

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NSD-5

10. Troubleshooting PAMS Technical Documentation

Page 38 Nokia Corporation Issue 1 05/02

TX Troubleshooting Flowchart

Start

Set Tx to ON

Check LED OFF

Set Tx_IF_GAIN = 500

Measure the total current

>550mA

Set TX_IF_GAIN = 10

<250mA

Measure UHF_LO

Measure VHF_LO

<-8dBm

<-15dBm

Set TX_IF_GAIN = 500

Measure Tx_IF signal

<-15dBm

1

No

No

No

No

No

Yes

Replace RF connector or duplexor

Replace PAM

See Synthesizer troubleshooting processor

See Synthesizer troubleshooting processor

Replace TIF

Yes

Yes

Yes

Yes

START

START

START