Path Of The Transmitted Signall; Fault-Finding Charts For The Transmitter - Nokia RH-41 Series Troubleshooting Instructions

CCS Technical Documentation
Path of the transmitted signal
AMPS/DAMPS
UEM TX I/Q DA-converters -> I/Q modulator and Digital gain step amplifier (Taco) ->
IF-BPF -> Upconverter+driver (Taco) -> Balun->BPF -> PA -> Coupler (Power detector)
-> Duplex-filter -> Diplexer -> EXT RF-connector -> Antenna
TDMA 1900 (dual band)
UEM TX I/Q DA-converters -> I/Q modulator and digital gain step amplifier (Taco) -> IF
BPF -> Upconverter+driver (Taco) -> Balun -> BPF -> PA -> Coupler (power detector)
-> Duplex-filter -> Diplexer -> EXT RF connector -> Antenna

Fault-finding charts for the transmitter

AMPS
1 Start the Phoenix software and set the phone to the analog mode by using RF
Test UI.
2 Set the channel to 383 and the power level to 2.
3 Connect the RF cable to the Ext RF connector.
4 Connect the cable to the Spectrum analyzer input.
5 Measure the RF level.
Note: Insertion loss of the cable and attenuations.
Issue 2 09/2003
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Nokia Corporation
Troubleshooting Instructions
Confidential
RH-41
Page 27