Table Of Contents - Nokia NHL-2NA Series Troubleshooting Instructions

CCS Technical Documentation

Table of Contents

Baseband Troubleshooting............................................................................................. 1
Introduction ..................................................................................................................1
General guidelines for NHL-2NA system troubleshooting .........................................1
Tools needed for troubleshooting.............................................................................. 1
General guidelines..................................................................................................... 1
Nominal current consumption................................................................................... 2
Troubleshooting paths .................................................................................................4
Dead or jammed device............................................................................................. 4
Partially damaged device .......................................................................................... 5
Most common symptoms reported by customer ....................................................... 5
Contact the retailer" on display................................................................................. 6
LG4 Baseband HW subarea troubleshooting ..............................................................8
Flashing troubleshooting ........................................................................................... 8
Energy management troubleshooting ........................................................................10
Device does not stay on........................................................................................... 10
General power checking......................................................................................... 10
SMPS of AEM troubleshooting .............................................................................. 12
Power key troubleshooting...................................................................................... 13
Clocks troubleshooting............................................................................................ 14
Charging checking................................................................................................... 17
Energy management calibration.............................................................................. 20
ADC-reading ........................................................................................................... 21
Backup battery......................................................................................................... 21
IR interface ................................................................................................................23
Sensors troubleshooting .............................................................................................25
Proximity Detector .....................................................................................................26
General notes........................................................................................................... 26
Proximity Detector components.............................................................................. 26
Handsfree shuts down automaticallly in sunshine .................................................. 27
PD calibration.......................................................................................................... 27
Troubleshooting with PD Calibration results.......................................................... 28
Ambient Light Detector .............................................................................................32
General Notes .......................................................................................................... 32
Ambient Light Detector .......................................................................................... 33
Problems from the user point of view ..................................................................... 34
SIM card ....................................................................................................................38
"Insert SIM Card" in device display allthough card is inserted .............................. 41
Audio .........................................................................................................................42
Microphone ............................................................................................................. 42
Earpiece................................................................................................................... 43
IHF .......................................................................................................................... 44
Accessory detection troubleshooting ...................................................................... 45
Memory troubleshooting ...........................................................................................46
Baseband serial interface troubleshooting .................................................................47
CBUS ...................................................................................................................... 47
Issue 1 07/02 ¤Nokia Corporation
NHL-2NA
Page 1