Nokia 6255 Rf Description And Troubleshooting page 3

Nokia Customer Care
Rx VHF LO Troubleshooting ....................................................................................................................59
Tx UHF LO (N7000) Schematic ..............................................................................................................60
Tx UHF LO (N7000) Troubleshooting ....................................................................................................61
GPS Troubleshooting................................................................................................................................... 62
GPS RF Block Diagram .............................................................................................................................62
GPS RF Schematic .....................................................................................................................................63
GPS Troubleshooting Setup ....................................................................................................................64
Self Test Failure ...................................................................................................................................... 65
Oscillator Failure.................................................................................................................................... 65
CW Test Failure....................................................................................................................................... 65
GPS RF Troubleshooting....................................................................................................................... 65
GPS DC Test Points ................................................................................................................................ 66
GPS RF Test Points................................................................................................................................. 69
FM Radio Troubleshooting ........................................................................................................................ 71
FM Radio Schematic .................................................................................................................................71
FM Radio Troubleshooting Setup ..........................................................................................................72
FM Radio Part Layouts and Probe Points........................................................................................ 72
Bluetooth Troubleshooting ....................................................................................................................... 75
Bluetooth Schematic ................................................................................................................................75
Bluetooth Troubleshooting Setup .........................................................................................................76
Bluetooth Troubleshooting Flowchart ............................................................................................. 77
Bluetooth DC and RF Test Points ...................................................................................................... 78
Issue 2 05/2005
©2005 Nokia Corporation
6255/6255i/6256/6256i (RM-19)
RF Description and Troubleshooting
Company Confidential Page 3