Nokia Customer Care RH-29 Series Cellular Phones 6a - Baseband Troubleshooting Issue 1 05/2004 Copyright © 2004 Nokia Corporation Company Confidential Page 1
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care Table of Contents Page No Introduction to RH-29 Troubleshooting ........................................................................................... 3 General guidelines for RH-29 troubleshooting ............................................................................ 3 Tools needed for troubleshooting .................................................................................................
Company Confidential RH-29 6b - Baseband Troubleshooting Nokia Customer Care Introduction to RH-29 Troubleshooting This document is intend to be a guide for localizing and repairing electrical faults in the RH-29 device. First there is a brief guide for fault localizing. Then fault repairing is divided into troubleshooting paths. Before any service operation you must be familiar with the RH-29 product and module level architecture.
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care Check failed module visually: Mechanical damages? Solder joints OK? Continue with specific troubleshooting procedure for the module: If there is an obvious fault, repair it before reflashing the device. Flash first if a fault is not obvious. If flashing is not working go to flashing troubleshooting. Due to CSP packages short circuits or broken solder joints are not easily seen.
Nokia Customer Care Company Confidential RH-29 6b - Baseband Troubleshooting Troubleshooting Paths Dead or jammed device Disassemble yes Check UI connector Replace UI module Issue 1 05/2004 Copyright © 2004 Nokia Corporation Company Confidential Page 5
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care Partially damaged device If the device is working, but some functionality is missing try to localize where the problems is and see relevant part of this manual. E.g audio is not working see “Audio Troubleshooting”, if charging is not working see chapter Charging troubleshooting etc.
Company Confidential RH-29 6b - Baseband Troubleshooting Nokia Customer Care ASIC is changed ASIC’s can be changed only at a defined service level. UEM changed If UEM is changed baseband calibrations should be made. New IMEI must be programmed also. ZOCUS calibration is not necessary. UPP_WD2 changed IMEI must be reprogrammed.
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care “CONTACT SERVICE” on display CONTACT SERVICE on display (Self-tests by Phoenix) Display information: “Contact Service” This fault means that software is able to run and thus the watchdog of UEM can be served. Self-test functions are executed when the phone is powered on and if one or more selftest functions fail, the message “Contact Service” is shown on the display.
Company Confidential RH-29 6b - Baseband Troubleshooting Nokia Customer Care 1CK Baseband HW Subarea Troubleshooting Flashing troubleshooting RH-29 has three memory components installed on the main PWB. The best indication of which one is causing problems can be obtained by flashing the device. It has to be kept in mind that all three flashes are interfaced with UPP WD2 asic that might it self have some problems. The necessary steps are described below.
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care Memory faults page2 "Secondary receive fail" or "Algorithm send failed" message? Yes Change UPP_WD2 Change SDRAM No Yes Prommer message about sdram failure? Yes Activity ActivityininSDRAM sdram Clkclk path (R101)? J108 pad? (J314)? Yes No No Voltages Voltages VmemA VmemAand and Vio OK? VioA ok? No Change UPP_WD2 Wrong manufacturer ID and device ID Change Flash Chip according to Phoenix messages If both chips report w
Yes Issue 1 05/2004 Copyright © 2004 Nokia Corporation Company Confidential Yes VcoreA (1.5V) ? Yes VIO C216 (1.8V), UEMRSTX R431(VBAT) and PURX J125(1.8) ? Flashing starts ok after 5s flashing stop's and show error code C101 change flash (128Mb) D311 No No No No Page 11 Change UPP WD2 (D100) Yes VR3(C212) (2.
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care Energy management troubleshooting Device does not stay on If the device is switched off without any visible reason, there may be problems in the following areas: • UEM watchdog problem (WD is not updated by SW) • BSI line problem (BSI line is floating => contact failure) • Battery line problem • Soldering problem The most likely reason is UEM WD (watchdog), which turns the device off after about 32 seconds if SW is jammed
Nokia Customer Care Company Confidential RH-29 6b - Baseband Troubleshooting General power checking Use service tool SF-20. Battery voltage should be at least 3.6V. After phone disassembly, use module jig MJ-21. Supply voltage drops? (or current is large >1A) Short circuit in Vbatt1-3, Vbattbb or Vbattihf lines. Try to find short circuit. Check components which are able to short circuit these lines, (filtering components etc.) Vbatt1-3, Vbatbb, Vbattihf meas.
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care Vcorea dead Voltages at C262, C263 and L260 (both sides), OK? Yes Retest No Change L260 OK? Yes Retest No Change N260 and Retest Page 14 Copyright © 2004 Nokia Corporation Company Confidential Issue 1 05/2004
Company Confidential RH-29 6b - Baseband Troubleshooting Nokia Customer Care Power key troubleshooting Phone cannot be powered by pressing pwr key Connect charger, phone is powered up? No See dead device troubleshooting Yes Change power key and retest Clocks troubleshooting Clocks include the following: RF-clock DBUS, CBUS clocks Flash and SDRAM clocks Sleep clock Bluetooth clock SIM clock MMC clock The main clock signal for the baseband is generated from the voltage controlled crystal oscillator VCX
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care and then fed to RFCLK. RFClk 26 MHz VCXO UPP_WD2 SleepClk 32 MHz CBusClk 1 MHZ DBusClk 13 MHz SIMClk 3.25 MHz RFBusClk 13 MHz RF-ASIC Mjoelner UEM SIM LPRFClk analog 26 MHZ ZOCUS 13 MHz MMC FlashClk Max 40 MHz BT module Flash memories SDRAM Max 104 MHz SDRAM In SLEEP mode the VCXO is off. UEM generates low frequency clock signal (32.768 kHz) that is fed to UPP_WD2, Bluetooth and ZOCUS.
Nokia Customer Care Company Confidential RH-29 6b - Baseband Troubleshooting Figure 1: Sleep clock (J123) Charging checking Use the BL6-C battery and JBV-1 calibration set to test charging. (NOTE: power supply cannot be charged if it not has a current sinking capability.) When you are charging totally empty battery, remember that start-up charging might take a little bit longer time than normal. During this time display is blank.
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care Figure 2: Charging troubleshooting Check BL6-C, Btemp, BSI, X382, R381, R390 Page 18 Copyright © 2004 Nokia Corporation Company Confidential Issue 1 05/2004
Nokia Customer Care Company Confidential RH-29 6b - Baseband Troubleshooting Nothing happens ACP-12 when ACP-8 is connected Measure Vchar at V380. Is it >3.
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care Energy management calibration During energy management calibration A/D-converter, BSI, Btemp, Battery voltage, Charger voltage and Charger current are calibrated.
Nokia Customer Care Company Confidential RH-29 6b - Baseband Troubleshooting Inspect components which are connected Vchar line: F380, L380 and V380. Ichar over limits: Inspect components which are connected at Vchar line. If those are OK, First change current sense resistor (R190), if calibration is not still successful change UEM. Calibration can be checked using ADC-readings. Known voltages, currents and resistances are fed and read by ADC-readings, read values and known values can be compared.
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care Maximum tolerances are: Reading Check point Tolerance Vbatt SCAL 4.2V ± 25mV Vchar 8.4V ± 40mV Ichar 500mA ± 20mA BSI 91k ± 1.3kohm Btemp 47k ± 5% <+25°C Backup battery Symptom of backup battery fault is Real Time Clock loses the correct time during short main battery removal. The same symptom can also be seen when the backup battery is empty.
Company Confidential RH-29 6b - Baseband Troubleshooting Nokia Customer Care SIM card The whole SIM interface locates in two chips UPP_WD2 and UEM. UEM contains the SIM interface logic level shifting. UPP provides SIMClk through UEM to the SIM. SIM interface supports both 3 V and 1.8 V SIMs.
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care Figure 3: SIM Power Up. Ch1 Vsim Ch2 Reset Ch3 Clock Ch4 I/O Measured with 3Vsim Figure 4: SIM answer to reset.
Nokia Customer Care Company Confidential RH-29 6b - Baseband Troubleshooting Figure 5: SIM Clk 3.25MHz. SIM_Clk_3.
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care "Insert SIM Card" in device display although card is inserted START Perform SIM BB self tests. Are they OK? No Perform BB SIM self tests. Are they OK? Replace UEM Yes Perform Phoenix SIM tests. Are they OK? Replace UPP_WD2 Yes No Check SIM connector Is it OK? Yes Is the SIM Detection Reliable? No No Check & clean connector contacts & pads Replace connector Yes No Measure VSIM. Is it 1.8/3.
Company Confidential RH-29 6b - Baseband Troubleshooting Nokia Customer Care Memory troubleshooting Most memory related errors are found through flashing the device, flashing the device is therefore recommended before any of the steps described in this chapter. Check flashing troubleshooting section first. There are however a few memory related errors that cannot be found through flashing. • - SDRAM(D310) partially damaged.
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care Serial interface troubleshooting CBUS CBUS is a three wire serial interface between the main baseband components. The bus consists of data, clock and bus_enable signals. In RH-29 the bus is connected from UPP WD2 to ZOCUS, UEM and LPRF. UPP_WD2 takes care of controlling the traffic on the bus. If the interface is faulty from the UPP WD2's end the phone won't boot properly as powering configurations don't work.
Nokia Customer Care Company Confidential RH-29 6b - Baseband Troubleshooting ST_ZOCUS_CBUS_IF_TEST to test AEM Cbus interface ST_UEM_CBUS_IF_TEST to test UEM Cbus interface ST_LPRF_IF_TEST to test Bluetooth Cbus interface If an error is found testing any of the above components you should replace the failing component. FBUS FBUS is a two wire RX and TX interface between UPP and flash/test interface. The bus goes through UEM which adjusts the voltage levels to suit UPP_WD2.
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care MMC troubleshooting Save Photo to known working MMC Yes No MMC failure Does save succeed No Pass Phoenix MMC test No Physical MMC failure, reflash software Fail Use CRO to examine Clk and CMD signals at points MMC connector.
Company Confidential RH-29 6b - Baseband Troubleshooting Nokia Customer Care Vibra There may be three kinds of problems with the vibra: - it does not rotate - It is noisy - it is continuously on Noisiness is usually caused by the contact of the rotating mass with surrounding mechanics.
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care ZOCUS Check N380 Page 32 Copyright © 2004 Nokia Corporation Company Confidential Issue 1 05/2004
Nokia Customer Care Company Confidential RH-29 6b - Baseband Troubleshooting UI Module Troubleshooting This document describes the troubleshooting of the UI module If the problem is in the display or in the keymat PWB the entire UI module must be replaced. However, the earpiece may be replaced (see audio troubleshooting).
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care Keyboard problem If the keyboard does not work, follow the troubleshooting chart below: Change UPPWD2 Page 34 Copyright © 2004 Nokia Corporation Company Confidential Issue 1 05/2004
Nokia Customer Care Company Confidential RH-29 6b - Baseband Troubleshooting Display blank Check and change V132 and Z130. Display OK.
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care Image on display not correct MJ-21 display Page 36 Copyright © 2004 Nokia Corporation Company Confidential Issue 1 05/2004
Company Confidential RH-29 6b - Baseband Troubleshooting Nokia Customer Care Display backlight does not turn on Display not working Display LEDs OK? C130 Check and replace display module or connectors.
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care Hand portable audio Start Is earpiece working? No Replace earpiece with new one. Does the earpiece work now? Yes Retest earpiece and UI module. No Check R341,X130 and lines. If OK, change UEM. No Place phone to MJ21 and set it to local mode. Use Phoenix audio test to set MIC2(Amp1=0dB,MicGainCtrl=0dB), HP OUT (GainCtrl=-6db), LOOPBACKANA on. Measure DC-offset from earpiece pads. Is it ~1.
Company Confidential RH-29 6b - Baseband Troubleshooting Nokia Customer Care Audio faults 2 Is microphone working? No Replace microphone with new one. Does the microphone work now? Yes Retest microphone. No Place phone to MJ21 and set it to local mode. Use Phoenix audio test to set MIC1(MicGainCtrl=0dB), EAR(GainCtrl= -26dB) and LOOPBACKANA on. Measure MICB1 from MICP. Is it ~2.0V? No Check R339,R350, R340 and lines. If OK, change UEM. No Check R338, C344, R340 and lines. If OK, change UEM.
RH-29 Company Confidential 6b - Baseband Troubleshooting Check IHF-lid pogo pins. Pins stuck? Audio faults 3 Yes Nokia Customer Care Replace IHF-lid. Does MALT work? No Is MALT working? No No Replace MALT. Does the MALT work now? Yes Yes Retest phone. No Place phone to MJ21 and set it to local mode. Use Phoenix audio test to set MIC2(g1&g2), HF+HFCM(g) and LOOPBACKANA on. Measure DC-offset from C331,C332,R386 and R389. Is it ~800mV? No Check lines. If OK, change UEM and retest.
Company Confidential RH-29 6b - Baseband Troubleshooting Nokia Customer Care Accessory Audio Start Is accessory detection working? No Replace connector X381. Does detection work now? Yes Retest phone. No Check contacts of PWB. Are those OK? No Solder a replacement contact and retest. No Check L384 and line. If OK, change UEM and retest. Yes Place phone to MJ21. Set phone to normal mode. Measure HEADINT voltage from L384 and J402 . Is it ~2.75V? Yes User may have used unsopported accessory.
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care Accessory faults 2 Is accessory earpiece working? No Replace accessory. Does the earpiece work now? Yes Accessory fault. No Place phone to MJ21 and set it to local mode. Use Phoenix audio test to set MIC2(Amp1=0dB,MicGainCtrl=0dB), HF+HFCM(GainCtrl=-6dB) and LOOPBackAna on. Measure DC-offset from R386, R389, L382, HF and HFCM. Is it ~810mV? No Check R386, R389, L382 and lines. If OK, change UEM.
Company Confidential RH-29 6b - Baseband Troubleshooting Nokia Customer Care Accessory faults 3 Is accessory microphone working? No Replace accessory. Does the microphone work now? Yes Accessory fault. No Check L381,R337,R349 and lines. If OK, change UEM. No Place phone to MJ21 and set it to local mode. Use Phoenix audio test to set MIC2(Amp1=0dB,MicGainCtrl=0dB), HF+HFCM(GainCtrl=-6dB) and LOOPBackAna on. Measure MICB2 from MIC2P. Is it ~2.
RH-29 Company Confidential 6b - Baseband Troubleshooting Nokia Customer Care Accessory faults 4 Is accessory button working? No Replace accessory. Does the button work now? Yes Accessory fault. Yes Connector fault. Retest after replacement. No Check R337,R349 and lines. If OK, change UEM. No Check R334 and lines. If OK, change UEM. No Replace connector X381. Does the button work now? No Place phone to MJ21 and set it to local mode. Use Phoenix audio test to set MIC2, Ear and LOOPBackAna on.
