Receiver Test Points; Transmitter Troubleshooting; General Instructions For Tx Troubleshooting - Nokia n80 User Manual

Nokia Customer Care

Receiver test points

Measure
RXIP
RXIN
RXQP
RXQN
Band
GSM850
GSM900
GSM1800
GSM1900

Transmitter troubleshooting

General instructions for Tx troubleshooting

Context
• Tx troubleshooting requires Tx operation.
• Do not transmit on frequencies that are in use.
• Transmitter can be controlled in the local mode for diagnostic purposes.
• The best diagnostic tool for GSM transmitter testing is RF Controls, and for the WCDMA transmitter
testing Tx Control.
Tx IQ tuning and Tx power tuning can be also used in some cases.
• Remember that retuning is not a repair procedure.
The first set of steps instructs how to assemble the test setup. This setup is general for all Tx troubleshooting
tasks.
Alternative steps provide specific troubleshooting instructions for
is for the EGSM900/GSM1800/GSM1900 bands and the latter for WCDMA.
Caution: Never activate the GSM or WCDMA transmitter without a proper antenna load. There should
be always 50 ohm load connected to the RF connector (antenna, RF-measurement equipment or at
least 2 watts dummy load), otherwise GSM or WCDMA PA may be damaged.
Steps
1. Connect a module jig to a computer with a DAU-9S cable or to a FPS-10 flash prommer with a modular
cable.
Make sure that you have a PKD-1 dongle connected to the computer parallel port.
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RF ASIC N7505
J7508
U87
J7510
J7529
RF ASIC N7505
L7504
L7505
L7501
L7500
COMPANY CONFIDENTIAL
Copyright © 2006 Nokia. All rights reserved.
RF Troubleshooting and Manual Tuning Guide
RF ASIC N7500
J7508
J7509
No test point
No test point
RF ASIC 7500
No test point
No test point
C7515
C7514
Phoenix service software. The first section
RM-91; RM-92
Expected Result
400 mVpp and 700mVDC
400 mVpp and 700mVDC
400 mVpp and 700mVDC
400 mVpp and 700mVDC
Expected Result
881,66771 MHz at
50dBm
942,46771 MHz at
50dBm
1842,86771 MHz at
50dBm
1960,06771 MHz at
50dBm
Issue 1