Nokia RM-237 Service Manual page 191

RM-237
System module
Phone description ..................................................................................................................................................8-5
Engine......................................................................................................................................................................8-8
Engine modules .................................................................................................................................................8-8
RF engine............................................................................................................................................................8-9
Main processor...................................................................................................................................................8-9
Energy management.........................................................................................................................................8-9
Battery and charging
Interfaces .............................................................................................................................................................
FM radio...........................................................................................................................................................
Camera.............................................................................................................................................................
SIM ...................................................................................................................................................................
µSD card interface
User interface.......................................................................................................................................................
Display .............................................................................................................................................................
Keyboard .........................................................................................................................................................
Display and keypad backlight
Audio concept ......................................................................................................................................................
Audio concept.................................................................................................................................................
Connections..........................................................................................................................................................
IrDA ..................................................................................................................................................................
AV connector...................................................................................................................................................
USB ...................................................................................................................................................................
Bluetooth ........................................................................................................................................................
Main RF characteristics........................................................................................................................................
List of Tables
Table 14 Channel numbers and frequencies
Table 15 Main RF characteristics........................................................................................................................
Table 16 Transmitter
Table 17 Receiver characteristics.......................................................................................................................
List of Figures
Figure 51 System block diagram ..........................................................................................................................8-7
Figure 52 Board and module connections...........................................................................................................8-8
Figure 53 Old (left) and new (right) charger plugs
Figure 54 FM radio interface
Figure 55 SIM interface connections
Figure 56 Audio block
Figure 57 IR module pin ordering
Figure 58 Bluetooth interface block diagram
Issue 1
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characteristics.................................................................................................................
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diagram..........................................................................................................................
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