Egsm900 & Gsm1800 Transmitter; General Instructions For Tx Troubleshooting - Nokia NPM-6 Series Troubleshooting Instructions

CCS Technical Documentation
EGSM900 & GSM1800 Transmitter

General instructions for Tx troubleshooting

Kindly refer to the Service Software Section, Service Concept dagram (p.40)
Connect test jig to computer with DAU-9S cable or to FPS-8 Flash Prommer with XCS-4
modular cable.
Make sure that you have PKD-1 dongle connected to computers parallel port.
Connect DC power supply to module test jig with FLC-2 cable.
Attention: When repairing or tuning transmitter use external DC supply with at
least 3A current capability. Set the DC supply voltage to 3.9V and set the jumper con-
nector on test jig to "bypass" position.
Connect a RF-cable to the module test jig (MJS-49) RF connector to and to measurement
equipment or at least 10dB attenuator, otherfwise the PA may be damaged. Normally
Spectrum analyzer is used as measurement equipment.
Attention: Normally Spectrum analyzer maximum input power is +30dBm. It is recom-
mended to use 10dB attenuator on Spectrum analyzer input to prevent damage.
Set the phone module to test jig and start Phoenix service sofware
Initialize connection to phone. (use FBUS driver when using DAU9S and COMBOX driver
when using FPS-8)
Select product from the menu
File -> Choose product -> NPM-6
From toolbar set operating mode to "Local"
Activate RF controls window from the menu
Maintenance -> Testing -> RF Controls
From the RF controls window
- Select band "EGSM900" or "GSM 1800" or "GSM1900" (Default = "EGSM900")
- Set Active unit to "Tx" (Default = "Rx")
- Set Operation mode to "Burst" (Default = "Burst")
- Set Tx data type to "Random" (Default = "All1")
Issue 2 06/03
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NPM-6/6X
Troubleshooting Instructions
Page 7