Nokia 2280 서비스 매뉴얼
CCS Technical Documentation
Troubleshooting — BB
RH-17
Issue 1 04/2003
Nokia Corporation Confidential
Page 3
Contents
Page No
Troubleshooting - Baseband .......................................................................................... 5
Overview ......................................................................................................................5
BB and RF Architecture ..............................................................................................6
Power Up and Reset .....................................................................................................6
Power up with PWR key ..............................................................................................9
Power up when charger is connected ...........................................................................9
RTC alarm power up ...................................................................................................9
Power off .....................................................................................................................9
Power Consumption and Operation modes ...............................................................10
Power Distribution .....................................................................................................11
Clock Distribution .....................................................................................................12
BB and RF Architecture ..............................................................................................6
Power Up and Reset .....................................................................................................6
Power up with PWR key ..............................................................................................9
Power up when charger is connected ...........................................................................9
RTC alarm power up ...................................................................................................9
Power off .....................................................................................................................9
Power Consumption and Operation modes ...............................................................10
Power Distribution .....................................................................................................11
Clock Distribution .....................................................................................................12
RFClk (19.2 MHz Analog)...................................................................................... 12
RFConvClk (19.2 MHz digital) .............................................................................. 13
CBUSClk Interface ................................................................................................. 13
DBUSClk Interface ................................................................................................. 14
SLEEPClk (Digital)................................................................................................. 14
SLEEPClk (Analog) ................................................................................................ 15
RFConvClk (19.2 MHz digital) .............................................................................. 13
CBUSClk Interface ................................................................................................. 13
DBUSClk Interface ................................................................................................. 14
SLEEPClk (Digital)................................................................................................. 14
SLEEPClk (Analog) ................................................................................................ 15
Flash programming ....................................................................................................16
Connections to Baseband ........................................................................................ 16
Baseband Power Up ................................................................................................ 16
Flash Programming Indication ................................................................................ 16
Baseband Power Up ................................................................................................ 16
Flash Programming Indication ................................................................................ 16
Flashing ......................................................................................................................17
Charging operation ....................................................................................................18
Charging operation ....................................................................................................18
Battery ..................................................................................................................... 18
Charging circuitry ................................................................................................... 19
Charger Detection ................................................................................................... 20
Charge Control ........................................................................................................ 21
Charging circuitry ................................................................................................... 19
Charger Detection ................................................................................................... 20
Charge Control ........................................................................................................ 21
Audio .........................................................................................................................21
Display and Keyboard ...............................................................................................21
Accessory ...................................................................................................................22
Display and Keyboard ...............................................................................................21
Accessory ...................................................................................................................22
Charging .................................................................................................................. 23
Tomahawk headset detection .................................................................................. 24
Accessory detection though ACI............................................................................. 26
RUIM (SIM Car) ..................................................................................................... 27
Tomahawk headset detection .................................................................................. 24
Accessory detection though ACI............................................................................. 26
RUIM (SIM Car) ..................................................................................................... 27
Test Points .................................................................................................................29
Top view.................................................................................................................. 29
Bottom View ........................................................................................................... 31
Bottom View ........................................................................................................... 31
Troubleshooting .........................................................................................................31
Top troubleshooting map ...........................................................................................32
Top troubleshooting map ...........................................................................................32
Phone is totally dead ............................................................................................... 34
Flash programming doesn‘t work ........................................................................... 35
Power doesn‘t stay on or the phone is jammed ....................................................... 37
Charger .................................................................................................................... 39
Audio faults ............................................................................................................. 40
Display faults........................................................................................................... 44
Keypad faults........................................................................................................... 47
Flash programming doesn‘t work ........................................................................... 35
Power doesn‘t stay on or the phone is jammed ....................................................... 37
Charger .................................................................................................................... 39
Audio faults ............................................................................................................. 40
Display faults........................................................................................................... 44
Keypad faults........................................................................................................... 47