User Guide

CCS Technical Documentation 7 - Troubleshooting Instructions
RH-26
Issue 1 02/04 ©Nokia Corporation Page 9
GSM850, GSM1800 and GSM1900 Transmitter
General instructions for Tx troubleshooting
1 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.
2 Connect DC power supply to module test jig with FLC-2 cable.
Note: When repairing or tuning transmitter use external DC supply with at
least 3A current capability. Set the DC supply voltage to 4.2V.
3 Connect an RF cable to the module test jig (MJ-5), RF connector to measurement
equipment or at least 10dB attenuator, otherwise the PA may be damaged. Nor-
mally a spectrum analyzer is used as measurement equipment.
Note: Normally spectrum analyzer maximum input power is +30dBm. It is recom-
mended to use 10dB attenuator in spectrum analyzer input to prevent damage.
4 Set the phone module to test jig and start Phoenix service software.
5 To initialize connection to the phone (when using FPS-8 together with DAU-9S
and COMBOX driver, use FBUS driver):
• From the File menu, choose Product.
• Select RH-26.
• From the toolbar, set operating mode to "Local".
6 To activate the RF controls window:
From the Testing menu, choose RF Controls
7 In the RF controls window:
• Select band "GSM850", "GSM 1800" or “GSM1900 (Default = "GSM850").
• 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 GSM850 band or 700 on GSM1800 band or 661 on
GSM1900 (Defaults).