User Guide

RAE-6/RA-4
Nokia Customer Care 6 - Baseband Description and Troubleshooting
4 COMPANY CONFIDENTIAL Issue 1 12/04
Copyright © 2004 Nokia. All Rights Reserved.
Display and keypad illumination....................................................................... 22
Power up and system states............................................................................ 22
Operating modes ........................................................................................... 23
Power up sequence ....................................................................................... 23
System Connector ............................................................................................ 24
Universal Serial Bus (USB).............................................................................. 25
Accessory Control Interface (ACI) ................................................................... 25
VOUT (Accessory Voltage Regulator) ........................................................... 26
HookInt............................................................................................................. 26
DC-plug .......................................................................................................... 26
VCHAR pins of system connector .................................................................. 26
After Sales Interface ......................................................................................... 27
User Interface .................................................................................................... 28
Component placement and FPWB outline of 1BD........................................... 29
Hinge connector............................................................................................... 30
PDA display ..................................................................................................... 31
Interface ......................................................................................................... 31
CMT display..................................................................................................... 33
Interface ......................................................................................................... 33
CMT keypad..................................................................................................... 35
Description of operation ................................................................................. 35
Illumination and drivers .................................................................................. 35
PDA keypad..................................................................................................... 36
Hall-sensor ..................................................................................................... 36
Baseband Troubleshooting.............................................................................. 38
Top level flowchart ........................................................................................... 39
Phone is dead troubleshooting ........................................................................ 41
IR troubleshooting............................................................................................ 42
Illumination troubleshooting ............................................................................. 43
SIM troubleshooting......................................................................................... 44
UI troubleshooting............................................................................................ 45
PDA LCD troubleshooting .............................................................................. 46
CBA keys troubleshooting .............................................................................. 47
QWERTY troubleshooting .............................................................................. 48
Charging troubleshooting................................................................................. 49
USB troubleshooting........................................................................................ 50
Accessory troubleshooting............................................................................... 51
MMC troubleshooting....................................................................................... 52
Audio troubleshooting ...................................................................................... 53
MDOC troubleshooting .................................................................................... 55
SDRAM troubleshooting .................................................................................. 56
Flash troubleshooting....................................................................................... 57
APE clock and reset troubleshooting ............................................................... 58