Nokia 500 Service Manual page 143

RM-750
System Module
Introduction...........................................................................................................................................................
Phone description
Energy management.............................................................................................................................................
Battery and charging
Normal and extreme voltages
Power key and system power up
Modes of operation
Power distribution
Clock scheme..................................................................................................................................................
SIM interface .......................................................................................................................................................
Device memory ...................................................................................................................................................
Bluetooth interface ............................................................................................................................................
GPS module .........................................................................................................................................................
USB .......................................................................................................................................................................
USB interface and charging
MicroUSB connector
Charger interface ................................................................................................................................................
User interface......................................................................................................................................................
Touch module................................................................................................................................................
Proximity sensor and ambient light sensor
Imaging and video
Display .......................................................................................................................................................
Camera interface
Illumination ...................................................................................................................................................
Keyboard interface........................................................................................................................................
Accelerometer................................................................................................................................................
Magnetometer ...............................................................................................................................................
Audio concept .....................................................................................................................................................
Audio interface ..............................................................................................................................................
Internal earpiece ...........................................................................................................................................
Internal handsfree (IHF) speakers
Internal microphone
External earpiece and microphone
Vibra ...............................................................................................................................................................
AV connector..................................................................................................................................................
Cellular RF technical description
RF block ..........................................................................................................................................................
QuBBE .............................................................................................................................................................
Receiver (RX) ..................................................................................................................................................
Synthesizer.....................................................................................................................................................
Transmitter (TX) ............................................................................................................................................
Frequency mappings..........................................................................................................................................
GSM850 frequencies
EGSM900 frequencies
GSM1800 frequencies....................................................................................................................................
GSM1900 frequencies....................................................................................................................................
WCDMA I (2100) Rx frequencies
WCDMA I (2100) Tx frequencies
WCDMA II (1900) frequencies
WCDMA IV (1700/2100) frequencies
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