Ericsson A2618s Manuals

Trouble Shooting Guide, Standard 4/00021-2/FEA 209 544/25 A Approved according to 1776-2/FEA 209 544 Trouble Shooting Guide, Standard Applicable for A2618s and A2618sc Contents 1 Explanations....................................................................................................................2 2 Network Problems...........................................................................................................5 3 On/Off Problems .............................................................................................................8 4 Audio Problems.............................................................................................................10 5 Display/Illumination Problems ....................................................................................13 6 Capacity/Charging Problems.......................................................................................17 7 SIM Problems................................................................................................................18 8 Key Problems.................................................................................................................20 9 Alert Problems...............................................................................................................21 10 Data Communication Problems...................................................................................22 11 Software Problems........................................................................................................22 12 Other Problems .............................................................................................................23 13 Revision History............................................................................................................24

Trouble Shooting Guide, Advanced 4/00021-3/FEA 209 544/25 C  Ericsson Mobile Communications AB Approved according to 1776-1/FEA 209 544 Trouble Shooting Guide, Advanced Applicable for A2618s b y T o k o ( t o k o @ g s m - f r e e . o r g ) Contents 1 Explanations .........................................................................................................................2 2 On/Off, Enter Test Program ...............................................................................................6 3 EPROM...............................................................................................................................10 4 ADC-Calibration (Voltage-Calibration) ..........................................................................12 5 BDATA-Calibration...........................................................................................................15 6 Current Calibration...........................................................................................................16 7 Network Problems..............................................................................................................20 8 LO Fault..............................................................................................................................30 9 VCXO..................................................................................................................................32 10 RSSI.....................................................................................................................................34 11 Phase and Frequency Error ..............................................................................................36 12 Transient Spectrum (Spectrum due to switching)...........................................................38 13 Modulation Spectrum Switched Mode (Spectrum due to Modulation) .......................42 14 Burst Timing (Power Time Template) .............................................................................50 15 Calibration Intermediate Power.......................................................................................52 16 Calibration Power Level....................................................................................................53 17 Audio ...................................................................................................................................56 18 Keyboard.............................................................................................................................65 19 Display.................................................................................................................................67 20 Buzzer..................................................................................................................................69 21 Illumination.........................................................................................................................70 22 Top Indicator......................................................................................................................71 23 SIM-Fault (“Insert Card”) ................................................................................................72 24 Self-Test...............................................................................................................................75 25 ADC-Values ........................................................................................................................77 26 Revision History .................................................................................................................78

  

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