Nokia 6120 classic Service Manual page 155

RM-243
System Module and User Interface
Introduction............................................................................................................................................................6-5
Phone description .............................................................................................................................................6-5
Energy management..............................................................................................................................................6-6
Battery and charging ........................................................................................................................................6-6
Backup battery...................................................................................................................................................6-8
Normal and extreme voltages .........................................................................................................................6-8
Power key and system power-up ....................................................................................................................6-9
Modes of operation ...........................................................................................................................................6-9
Power distribution
Clocking scheme .............................................................................................................................................
Bluetooth .............................................................................................................................................................
FM radio................................................................................................................................................................
USB ........................................................................................................................................................................
CBUS interface......................................................................................................................................................
FBUS ......................................................................................................................................................................
ECI interface .........................................................................................................................................................
Charger interface .................................................................................................................................................
SIM interface ........................................................................................................................................................
µSD card interface ...............................................................................................................................................
Camera concept ...................................................................................................................................................
Cameras...........................................................................................................................................................
Main camera characteristics..........................................................................................................................
Camera flash ...................................................................................................................................................
Secondary camera characteristics
User interface.......................................................................................................................................................
Display module ...............................................................................................................................................
Keyboard and other
Display and keypad backlight
ASICs......................................................................................................................................................................
RAP ASIC...........................................................................................................................................................
EM ASIC N2300 (Betty)....................................................................................................................................
EM ASIC N2200 (Avilma)
Device memories .................................................................................................................................................
RAP memories NOR flash and SDRAM
Combo memory ..............................................................................................................................................
Audio concept ......................................................................................................................................................
Audio HW architecture...................................................................................................................................
Internal microphone
External microphone......................................................................................................................................
Internal earpiece ............................................................................................................................................
Internal speaker .............................................................................................................................................
External earpiece............................................................................................................................................
Vibra circuitry .................................................................................................................................................
AV connector...................................................................................................................................................
Baseband technical specifications.....................................................................................................................
External interfaces
SIM IF connections..........................................................................................................................................
Charging interface connections & electrical characteristics
Internal interfaces..........................................................................................................................................
Back-up battery interface electrical
Issue 1
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keys...............................................................................................................................
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characteristics....................................................................................
COMPANY CONFIDENTIAL
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