Table Of Contents - Nokia RM-11 Series Troubleshooting Manual

RM-11
Troubleshooting - RF
Contents
Introduction ..................................................................................................................................................... 4
Equipment List for RF Troubleshooting ................................................................................................. 6
RF (Manual Control) Components in Phoenix ..................................................................................... 7
Observing Tx Output Spectrum on Analyzer..................................................................................... 9
RF PDM Settings .................................................................................................................................... 10
Other RF Parameters in Phoenix........................................................................................................ 12
RF Tuning Parameters in Phoenix ..................................................................................................... 13
RF AGC Status Components in Phoenix .......................................................................................... 14
CDMA In-Call Testing ...............................................................................................................................14
CDMA In Call Testing (Low Gain) ...................................................................................................... 15
CDMA In Call Testing (High Gain)..................................................................................................... 16
CDMA In Call Testing (AMPS) ............................................................................................................ 17
Typical PDM Readings ..............................................................................................................................18
Cell Band .................................................................................................................................................. 18
Tx PDM Characteristic Curves (Call Mode) ........................................................................................22
Rx PDM Characteristic Curve (Call Mode) ..........................................................................................22
Key RF Performance Tests in Call Mode ..............................................................................................22
Tx Tests ..................................................................................................................................................... 22
Rx Tests..................................................................................................................................................... 23
Supply Lines Measurement Using Phoenix..................................................................................... 24
12 RF-related Supply Lines Distribution ......................................................................................... 24
Supply Lines Distribution by RF Components................................................................................ 25
12 Supply Lines Resistance to Ground ............................................................................................ 25
Top RF-related Failures Seen in FLALI .................................................................................................26
Top RF-related Failures Seen in FINUI .................................................................................................26
Synthesizer Troubleshooting .................................................................................................................... 28
Synthesizer Setup Using Phoenix .........................................................................................................29
VCTCXO Troubleshooting .........................................................................................................................30
UHF Synthesizer Troubleshooting .........................................................................................................31
UHF Synthesizer Schematic ....................................................................................................................32
UHF Synthesizer Layout ...........................................................................................................................32
UHF Frequency is Incorrect................................................................................................................. 33
Rx VHF (N701 LO) Schematic .................................................................................................................33
Rx VHF Layout ............................................................................................................................................34
Incorrect Rx VHF Frequency ............................................................................................................... 34
Tx VHF Schematic ......................................................................................................................................34
Tx VHF Layout .............................................................................................................................................35
Incorrect Tx VHF Frequency ................................................................................................................ 35
Tx Troubleshooting ...................................................................................................................................... 36
Tx Schematic 1 ...........................................................................................................................................37
Tx Schematic 2 ...........................................................................................................................................37
Tx Troubleshooting Using Phoenix .......................................................................................................38
PCS Band Tx Probe Points .......................................................................................................................40
Cell and AMPS Band Tx Probe Points ..................................................................................................41
Tx AMPS Troubleshooting Using Phoenix ...........................................................................................42
Rx Troubleshooting ..................................................................................................................................... 43
Receiver Schematic ...................................................................................................................................44
©2005 Nokia Corporation
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