Nokia NPL-4 Series Troubleshooting Instructions page 5

Nokia Customer Care
Magic troubleshooting ...............................................................................................96
FM Radio Troubleshooting .......................................................................................... 97
FM radio component layout .......................................................................................97
FM radio troubleshooting diagram ............................................................................99
Notes to "FM radio troubleshooting diagram" ........................................................ 99
List of Figures
Fig 1 Component placement 1 .............................................................................................8
Fig 2 Picture of the Assembled PWB with Chambers.........................................................9
Fig 3 Receiver Test Points ...................................................................................................10
Fig 4 Transmitter Test Points...............................................................................................11
Fig 5 Synthesizer Test Points...............................................................................................11
Fig 6 RF Block -Diagram ....................................................................................................12
Fig 7 RF Power Supply Configuration ................................................................................13
Fig 8 RSSI Window .............................................................................................................17
Fig 9 Signal Measurement ...................................................................................................19
Fig 10 Signal Amplitudes ....................................................................................................20
Fig 11 RX IQ Signals...........................................................................................................21
Fig 12 Receiver Fault Chart 1..............................................................................................22
Fig 13 Receiver Fault Chart 2..............................................................................................23
Fig 14 Receiver Fault Chart 3, 4, 5 .....................................................................................23
Fig 15 Receiver Fault Chart 6..............................................................................................24
Fig 16 Receiver Fault Chart 7..............................................................................................24
Fig 17 Receiver Fault Chart 8..............................................................................................25
Fig 18 Receiver Fault Chart 9..............................................................................................25
Fig 19 Block Diagram of Antenna Switch: Left Input Port (Antenna) and Right Output Ports
Rx/Tx .....................................................................................................................................26
Fig 20 RF Controls ..............................................................................................................30
Fig 21 RF Controls ..............................................................................................................32
Fig 22 Band Selection..........................................................................................................35
Fig 23 RF Control Values ....................................................................................................36
Fig 24 RF Control Values ....................................................................................................39
Fig 25 RF Control Values ....................................................................................................40
Fig 26 RF Control Values ....................................................................................................43
Fig 27 RF Control Values ....................................................................................................44
Fig 28 Typical Feature Tuning Curve for the Matshushita VCO ........................................48
Fig 29 26 Mhz at G501 Pin Out...........................................................................................51
Fig 30 26 MHz RFCLK at R420/C420................................................................................51
Fig 31 VCO Output, 1800 Band, RX on, Continuous Output .............................................52
Fig 32 DC Power Supply Diagram ......................................................................................59
Fig 33 NPL-4/5 BB Measurement Points, Top ...................................................................60
Fig 34 NPL-4/5 BB Measurement Points, Bottom ..............................................................61
Fig 35 MBUS.......................................................................................................................81
Fig 36 ACI Diagram ...........................................................................................................83
Fig 37 Testpoints .................................................................................................................94
Fig 38 Component placement .............................................................................................97
Fig 39 Trace layout. ............................................................................................................98
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Issue 2 05/05
Company confidential NPL-4/5/
Troubleshooting Instructions
Page No
Page 5