Text preview for : System ModuleOriginal.pdf part of Nokia 6250 Service Manual, Part, Variant, Tools, Troubleshooting, Schematic, ecc. (original 10/00) - File 12
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3DJH 1R System Module.....................................................................................................1 Vocabulary ...................................................................................................................4 Baseband architecture .................................................................................................... 5 Audio Parts ..................................................................................................................6 Power Consumption. ....................................................................................................7 Vibra power specification ......................................................................................... 7 Electrical Interfaces .....................................................................................................7 Shielding.................................................................................................................... 7 System Connector ..................................................................................................... 7 Signals of the system connector & FPC connector ................................................... 9 Interface Base-band to RF....................................................................................... 10 AC and DC Characteristics of RF/BB signals ....................................................... 11 Power Supplies for RF/BB...................................................................................... 15 Serial RF Interface .................................................................................................. 15 Flash Programming ....................................................................................................16 Flash Programming Connections in System Connector.......................................... 16 Battery Connector ................................................................................................... 16 SIM Card Connector : Code 5409145..................................................................... 18 Infrared Interface Module ....................................................................................... 18 Interface Base-band to LCD Module ...................................................................... 20 Real Time Clock ........................................................................................................21 Audio Connections ....................................................................................................21 Panel Connections .....................................................................................................22 Production Test Interface ........................................................................................ 23 RF Module ................................................................................................................... 24 Maximum Ratings .....................................................................................................24 RF Characteristics ........................................................................................................ 25 Internal Antenna ........................................................................................................25 Internal Antenna Characteristics ................................................................................26 RF Frequency Plan ....................................................................................................27 DC characteristics .....................................................................................................27 Regulators................................................................................................................ 27 RF Functional Description-Diagram .........................................................................28 Frequency Synthesizer ...............................................................................................29 AFC function .............................................................................................................30 Receiver .....................................................................................................................31 AGC strategy .............................................................................................................32 Receiver characteristics .............................................................................................33 Transmitter ................................................................................................................34 Transmitter characteristics .........................................................................................35 Parts List of SM4 (EDMS Issue 3.13) ................................................ Code:0201490 36
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3DJH 1R Baseband Block Diagram ...........................................................................................6 System Connector.......................................................................................................8 Battery Connector PCB Footprint ..............................................................................18 LCD Foil Connection Footprint .................................................................................21 Panel Test Interface Signals .......................................................................................23 RF Fequency Plan......................................................................................................27 Frequency Synthesiser................................................................................................29
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