Table Of Contents - Nokia RH-6 Series Baseband Description & Troubleshooting

RH-6
6 - BB Description & Troubleshooting

Table of Contents

Baseband Top-Level Description....................................................................................4
Baseband block diagram ..............................................................................................4
RH-6 baseband feature list ...........................................................................................5
Environmental specifications .......................................................................................5
Frequencies in baseband ..............................................................................................6
Printed Wire Board (PWB) ..........................................................................................6
Baseband Architecture ....................................................................................................7
Baseband core ..............................................................................................................7
Energy management ....................................................................................................8
DC characteristics ......................................................................................................13
Charging ....................................................................................................................14
Audio circuitry ...........................................................................................................15
Acoustics ....................................................................................................................17
Audio modes ..............................................................................................................19
User Interface ................................................................................................................22
LCD module ..............................................................................................................22
Touchpad ...................................................................................................................25
LED power supply for display and touchpad module ...............................................26
EL power supply for touchpad module .....................................................................27
Touchpad and flip module keypads ...........................................................................27
SIM Interface ................................................................................................................30
BB-RF Interface ............................................................................................................31
Digital signals between BB and RF ...........................................................................31
Analog signals between BB and RF ..........................................................................31
Voltage regulators in BB for RF ................................................................................32
System Connector Interface ..........................................................................................35
System connector .......................................................................................................35
Accessory Control Interface (ACI) ............................................................................36
HookInt ......................................................................................................................40
Charging ....................................................................................................................40
Voltages and currents ................................................................................................41
Baseband Calibration ....................................................................................................42
BB calibration limits ..................................................................................................42
Baseband Test points ....................................................................................................43
List and description ....................................................................................................43
Test points on bottom-side .........................................................................................45
Test points on top-side ...............................................................................................46
Baseband Troubleshooting............................................................................................47
Top level flowchart ....................................................................................................48
Phone is dead .............................................................................................................50
Flash faults .................................................................................................................51
Phone is jammed ........................................................................................................53
Phone does not charge ...............................................................................................55
SIM card error ............................................................................................................56
Audio faults ...............................................................................................................57
External earpiece failure ............................................................................................60
Accessory detection troubleshooting .........................................................................62
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© 2003 Nokia Corporation.
CCS Technical Documentation
Issue 1 10/2003
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