User Guide

RH-20 Company confidential
CCS Technical Documentation
Page 8 Nokia Corporation. Issue 1 10/2003
EGSM900, GSM1800 & GSM1900 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 4.2V.
Connect an RF-cable to the module test jig (MJS-38) RF connector and to measurement
equipment or at least a 10dB attenuator, otherwise the PA may be damaged. Normally a
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 -> RH-20
From toolbar set operating mode to "Local"
Activate RF controls window from the menu
Testing -> RF Controls
From the RF controls window
- Select band "GSM900" or "GSM 1800" or "GSM1900" (Default = "GSM900")
- Set Active unit to "Tx" (Default = "Rx")
- Set Operation mode to "Burst" (Default = "Burst")
- Set Tx data type to "Random" (Default = "All1")
- Set Rx/Tx channel to 37 on GSM900 band or 700 on GSM1800 band or 661 on