Nokia RM-701, Service Manual

Page: 185 / 234

Table of Contents
Introduction ........................................................................................................................................................... 6–5
Phone description ............................................................................................................................................ 6–5
Energy management ............................................................................................................................................. 6–9
Battery and charging ....................................................................................................................................... 6–9
Normal and extreme voltages ........................................................................................................................ 6–9
Power key and system power up ................................................................................................................ 6–10
Modes of operation ....................................................................................................................................... 6–10
Power distribution ........................................................................................................................................ 6–11
Clock scheme .................................................................................................................................................. 6–11
SIM interface ....................................................................................................................................................... 6–13
Device memory ................................................................................................................................................... 6–13
BOB1.0M-b module ............................................................................................................................................. 6–13
GPS interface ....................................................................................................................................................... 6–15
NFC interface ....................................................................................................................................................... 6–16
USB ....................................................................................................................................................................... 6–17
USB interface and charging .......................................................................................................................... 6–17
MicroUSB connector ...................................................................................................................................... 6–18
Charger interface ................................................................................................................................................ 6–19
User interface ...................................................................................................................................................... 6–19
Touch module ................................................................................................................................................ 6–19
Proximity Sensor and Ambient Light Sensor (ALS) .................................................................................... 6–20
Imaging and video ........................................................................................................................................ 6–20
Multimedia application processor .......................................................................................................... 6–20
Display module ......................................................................................................................................... 6–21
TV-out interface ........................................................................................................................................ 6–21
Camera ...................................................................................................................................................... 6–22
Illumination ................................................................................................................................................... 6–23
Keyboard interface ........................................................................................................................................ 6–23
Accelerometer ................................................................................................................................................ 6–23
Magnetometer ............................................................................................................................................... 6–24
Audio concept ..................................................................................................................................................... 6–25
Audio HW architecture .................................................................................................................................. 6–25
Internal earpiece ........................................................................................................................................... 6–27
Internal handsfree (IHF) speakers ............................................................................................................... 6–27
Internal microphone ..................................................................................................................................... 6–27
External earpiece and microphone ............................................................................................................. 6–28
Vibra ............................................................................................................................................................... 6–28
AV connector .................................................................................................................................................. 6–28
Cellular RF technical description ....................................................................................................................... 6–28
RF block .......................................................................................................................................................... 6–28
QuBBE ............................................................................................................................................................. 6–29
Receiver (RX) .................................................................................................................................................. 6–29
Synthesizer ..................................................................................................................................................... 6–30
Transmitter (TX) ............................................................................................................................................ 6–30
Frequency mappings .......................................................................................................................................... 6–31
GSM850 frequencies ...................................................................................................................................... 6–31
EGSM900 frequencies .................................................................................................................................... 6–32
GSM1800 frequencies .................................................................................................................................... 6–32
GSM1900 frequencies .................................................................................................................................... 6–34
WCDMA I (2100) Rx frequencies ................................................................................................................... 6–35
RM-701
System Module
Issue 1 COMPANY CONFIDENTIAL Page 6 – 3
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