User Guide

ManualsBrandsNokia ManualsCell Phone6020

Issue 1 01/2005 COMPANY CONFIDENTIAL

Nokia Customer Care

6(a) - Baseband

Troubleshooting

Summary of content (28 pages)

PAGE 3
RM-30 6(a) - Baseband Troubleshooting Instructions Nokia Customer Care Table of Contents Page No Test Points........................................................................................................... 5 Troubleshooting.................................................................................................. 6 Top level flow 1 .................................................................................................. 6 Top level flow 2 .........................................
PAGE 5
RM-30 PWR_SWITCH X7804 X7802 X7806 X7807 X7801 X7803 J2101_N J1474 XSHUTDOWN J2100_P BSI Values (BSI-GND): 3k3 – Local mode 6k5 – Test mode 75k – BL5B Battery J1003 RESET J1470 VEN J1006 TXA J1000 RFBUSDA J2809 FBUSTX J2803 UEMINT J2807 MBUSTX VR1B 0 V VFLASH1 VFLASH2 J1001 RFBUSCLK VR1A 4.75 V VBAT J1471 CLK J1002 RFBUSEN1 J1472 TXDA J1473 CSX VR6 2.78 V VCORE 1.5 V VR2 2.78 V VR5 2.78 V VR3 2.78 V VR7 2.78 V VR4 2.
PAGE 6
RM-30 Nokia Customer Care 6(a) - Baseband Troubleshooting Instructions Troubleshooting ■ Top level flow 1 TOP Phone is totally dead? Yes Phone is dead No Flash programming does not work? Yes Flash faults No Phone does not start up or phone is jammed? Yes Phone is jammed No Charging does not work? Yes Charger No TOP2 6 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
PAGE 7
RM-30 6(a) - Baseband Troubleshooting Instructions Nokia Customer Care ■ Top level flow 2 Top2 Does Does phonethe Does read SIM card? FM radio work? No FM SIMradio card Yes Audio faults? Audio faults Yes No Has the display or LEDs a problem? Display faults Yes No Does the Keypad work? No Keypad faults No Camera faults No FCI faults Yes Does the Camera work? Yes DoesEND the FCI work? Yes Issue 1 01/2005 END COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
PAGE 8
RM-30 Nokia Customer Care 6(a) - Baseband Troubleshooting Instructions ■ Phone is dead 1 Phone is dead Is VBAT=3.7VDC (meas. on X2000)? No Failure in VBAT line, check: X2000 Yes Is voltage =3,7VDC at L2200 and C2239 No Check: L2200 and C2239 Yes Is Pin 1 on S2419 "high" when power key is not pressed? No Check R2423, C2402 Yes Is Pin1 on S2419=0VDC when power key is pressed? No Check S2419, PWB Yes Dead2 8 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
PAGE 9
RM-30 6(a) - Baseband Troubleshooting Instructions Nokia Customer Care ■ Phone is dead 2 Dead2 Is Sleep CLK on J2802 = 32.8kHz, 1.8Vpp? No Check: B2200, C2241, C2210, PWB then replace D2200 Yes See Waveform 1 Is PURX=1.8VDC on J2800 1sec. after power key is pressed? No Replace D2200, PWB Yes Is VR3=2.
PAGE 10
RM-30 Nokia Customer Care 6(a) - Baseband Troubleshooting Instructions ■ Flash faults 1 Flash faults Does the phone set the Fbus TXD at J2809 line high after the startup? Measure BSI pulse during Flash programming. Is it OK? Yes Check BSI line, X2000, C2001 C2005, R2270, C2270, R2273 Yes No Yes Measure FBUSTX line during Flash programming from testpoint J2809. Is it 1.
PAGE 12
RM-30 Nokia Customer Care 6(a) - Baseband Troubleshooting Instructions ■ Phone is jammed 1 Phone is jammed Measure VIO, VCORE, VFLASH1, VANA, VR3 voltages. Are they OK? No Check L2200, C2239, BSI/BTEMP lines and VBATT lines Check VBATT1-6, VIO, VCORE, VFLASH1, VANA, VR3 lines. Are they ok? Yes Yes Measure 32.8kHz Sleep Clk from testpoint J2802. Is it OK? No Waveform 3 Retest Check BSI/BTEMP lines. If OK UEM regulators are not working. Change UEM. No See Waveform 4 Waveform 4 Measure 32.
PAGE 13
RM-30 6(a) - Baseband Troubleshooting Instructions Nokia Customer Care ■ Phone is jammed 2 P a rt 2 S e e W a v e f o rm 5 Waveform 5 M e a s u re 2 6 M H z R F C lk f ro m J 2 8 1 5 . Is it O K ? Check R2902 and C 2 9 0 2 . If o k change N7500. Yes M e a s u re P U R X s ig n a l f ro m te s tp o in t J 2 8 0 0 . Is it 1 .8 V ? No Change UEM Yes Jam m ed 2 Issue 1 01/2005 R e te s t COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
PAGE 14
RM-30 Nokia Customer Care 6(a) - Baseband Troubleshooting Instructions Jammed 2 Waveform 6 Phone shutsdown after 30sec? Measure watchdog signal CBUSDA from testpoint J2805. Is it ok? Yes Waveform 7 No No Change UPP See Waveform 6 Measure DBUSClk 13MHz signal from testpoint J2811. Is it OK? No See Waveform 7 Yes Measure FBUSRX signal during phone info read from testpoint J2810. Is it OK? Waveform 8 No No Change UEM Check phone info.
PAGE 15
RM-30 6(a) - Baseband Troubleshooting Instructions Nokia Customer Care ■ Charger If charging does not work, the cause might be faulty or no calibration of BB. Therefore the calibration should be checked if the procedures in the flow chart do not help. Charger Connect charger (ACP-7E) Does Battery bar scroll? No Does the display show "Not charging"? Yes Check C2004, R2270, R2273 and C2270. No Yes Measure voltage over (TVS) V2000. Is it >3.
PAGE 16
RM-30 Nokia Customer Care 6(a) - Baseband Troubleshooting Instructions ■ SIM Card SIM card Insert SIM card faults? Yes No Check BSI line, X2000, C2004, R2270, C2270, R2273. If OK change UEM. No Check VSIM line, X2700, C2703, C2219. If ok change R2700. If still wrong VSIM voltage change UEM No Check SIM lines. If OK change R2700. If still fail change UEM. No Does phone enter LOCAL MODE. OK? Yes Measure VSIM voltage from X2700. Is it 3V or 1.8V? Yes Check SIM power Up sequence.
PAGE 17
RM-30 6(a) - Baseband Troubleshooting Instructions Nokia Customer Care ■ Audio faults 1 Audio faults Is HP earpiece working? Try changing earpiece. Is it working now? No No Yes Yes Set phone in LOCAL mode. Use Phoenix Audio Test. Set EXT IN, HP OUT, LOOP ON Measure DC offset voltagefrom Earpiece pads. is it ~1.38V to GND? No Check L2150, R2151, C2179 and line. If OK change UEM. Yes Measure MICB2voltage from XMICP pads. Is it ~2.
PAGE 18
RM-30 Nokia Customer Care 6(a) - Baseband Troubleshooting Instructions ■ Audio faults 2 Audio faults 2 Is HP microphone working Change microphone. Is it working now No Yes Yes No Set phone in LOCAL mode. Use Phoenix Audio Test. Set Hp microphone in, Ext speaker out, Loop On. Audio faults 3 Measure MICB1 DC voltage from MICP pad, J2430. Is it >1,0VDC Yes No Check R2153, R2154, C2159, C2171 and line. If OK change UEM.
PAGE 19
RM-30 6(a) - Baseband Troubleshooting Instructions Nokia Customer Care ■ Audio faults 3 Audio faults 3 Is Ext-ear working No Set phone in LOCAL mode. Use Phoenix Audio Test. Set Ext microphone in Ext speaker out, Loop On. Yes Measure DC volts on speaker pads of X2002, pin 11 - 14. Are they ~0,8V DC (to GND) Yes Change UEM Is Ext-mic working No No Yes Set phone in LOCAL mode. Use Phoenix Audio Test. Set Ext microphone in Ext speaker out, Loop On Measure DC volts on micp pad of X2002, pin 10.
PAGE 20
RM-30 Nokia Customer Care 6(a) - Baseband Troubleshooting Instructions ■ Audio faults 4 Audio faults 4 Is IHF speaker working? Change speaker. Is it working now? No Yes No Set Phone in LOCAL mode. Use Phoenix Audio Test. Set Ext microphone in Ihf speaker out, Loop On. Yes Measure DC volts on speaker pads. Are they ~0.5Vbat (to GND) END Yes No Check C2164, C2180. If OK change UEMEK. Check C2164, L2151, L2152, L2154, L2155, R2152, R2155, lines and Vbat. If OK change UEMEK.
PAGE 21
RM-30 6(a) - Baseband Troubleshooting Instructions Nokia Customer Care ■ Earpiece 2.15 Earpiece Earpiece Waveform 9 Connect EXT audio signal 1kHz (sine 300mVpp) to XMICP pad and Ground on XMICN. Set phone in LOCAL mode. Use Phoenix Audio Test. Set Ext microphone in Ext speaker out, Loop On. Waveform 10 Measure signal from external earpiece pads, X2002, pin 11 - 14. Is there a sine vawe? No Mesure sine signal at UEM (R2154 MIC1_P). Use AC coupling.
PAGE 22
RM-30 Nokia Customer Care 6(a) - Baseband Troubleshooting Instructions ■ Display faults 1 Set phone into local mode. Set VBATT 4.2V. Start display test with Phoenix. Set display and keypad lights on. Display faults Are the LEDs turned on? No Check N2400 Measure signal from C2407. Is it ~16 V? Yes Display faults 2 Yes Check R2425 and X2400 pin1,12 No Measure voltage from C2424. Is it ~2,4 V? No Check control signal line if ok. If yes, change UEM. No Check battery and line.
PAGE 23
RM-30 6(a) - Baseband Troubleshooting Instructions Nokia Customer Care ■ Display faults 2 Display faults 2 Change UI module. Is it working? No Does the display work? No Check X2400 Yes Open Phoenix, enter Test mode and goto Testing > Display Test > Select Test > Contrast Test. Set the height and width values to 128 respectively.Then click Send to Phone Yes Measure VDD (2.78V) and VDDI (1.8V). Is it OK? No Is there a clear difference on the Grey scale? No Yes Yes Change UEM Measure RESX, CSX.
PAGE 24
RM-30 Nokia Customer Care 6(a) - Baseband Troubleshooting Instructions ■ Keypad faults 1 Keypad faults Is the power key working? No Measure voltage from S2419. Is it 3.7V? Yes No Yes Measure voltage from S2419 when power key is pressed. Is it high? Yes Check S2419. Is it OK? No No Keypad faults 2 Check R2423, C2402, C2400, S2419 and line. If OK change UEM Phone is jammed Yes Phone is dead Change S2419 Retest 24 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
PAGE 25
RM-30 6(a) - Baseband Troubleshooting Instructions Nokia Customer Care ■ Keypad faults 2 Keypad faults 2 Are keys working? Yes No Measure SLEEPX signal from J2801 when key is pressed. Is it 1.8V? Yes When keypad is pressed, the LEDs are turned on? Yes Display faults END Issue 1 01/2005 No Check lines. If still failing change UPP. No Check lines. If still failing change UPP. Retest COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.
PAGE 26
RM-30 Nokia Customer Care 6(a) - Baseband Troubleshooting Instructions ■ Camera faults 1 Change the camera module. Camera works? Camera Yes No Is the viewfinder starting? No Check X1470 solder joints. Are they OK? Change X1470. No Yes Measure 1.8 V from C1482 when camera is activated. Is it OK? No Check N1470, C1481, C1482, C1483, C1473 and C1474. Change defect part. Yes Yes Measure 2.8 V from C1470 when camera is activated. Is it O K? No Check C1470, C1471 and C14721. Change defect part.
PAGE 27
RM-30 6(a) - Baseband Troubleshooting Instructions Nokia Customer Care ■ Camera faults 2 Camera 2 Check R1473 and C1475. Are they OK? No Change defect part No Change defect part. Yes Check R1474 and R1475. Are they OK? Yes Check R1471 and R1472. Are they OK? No Change defect part. Yes Change the HW accelrator D1470. Retest camera. Is it OK? No Change UPP D2800 Yes Retest End Issue 1 01/2005 COMPANY CONFIDENTIAL Copyright © 2004 Nokia. All Rights Reserved.