Nokia RM-132 Service Manual & Parts Manual
Also see for N73 - Smartphone 42 MB: Specification sheetUser guideGet startedGet startedUser guide
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Receiver test pointsMeasure RF ASICN7505RF ASIC N7500 Expected ResultRXIP J7508 J7508 400 mVpp and 700mVDCRXIN U87 J7509 400 mVpp and 700mVDCRXQP J7510 No test point 400 mVpp and 700mVDCRXQN J7529 No test point 400 mVpp and 700mVDCBand RF ASICN7505RF ASIC 7500 Expected ResultGSM850 L7504 No test point 881,66771 MHz at 50dBmGSM900 L7505 No test point 942,46771 MHz at 50dBmGSM1800 L7501 C7515 1842,86771 MHz at50dBmGSM1900 L7500 C7514 1960,06771 MHz at50dBmTransmitter troubleshootingGeneral instructions for Tx troubleshootingContext• 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 transmittertesting 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 troubleshootingtasks.Alternative steps provide specific troubleshooting instructions forPhoenix service software. The first sectionis 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 shouldbe always 50 ohm load connected to the RF connector (antenna, RF-measurement equipment or atleast 2 watts dummy load), otherwise GSM or WCDMA PA may be damaged.Steps1. Connect a module jig to a computer with a DAU-9S cable or to a FPS-10 flash prommer with a modularcable.Make sure that you have a PKD-1 dongle connected to the computer parallel port.RM-132; RM-133RF Troubleshooting and Manual Tuning Guide Nokia Customer CareIssue 1 COMPANY CONFIDENTIAL Page 7 –17Copyright © 2006 Nokia. All rights reserved. |
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