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NHL-10

Baseband Troubleshooting

CCS Technical Documentation

ISSUE 2 01/2004

COMPANY CONFIDENTIAL

15

Copyright © 2003 Nokia. All Rights Reserved.

Energy management calibration

During energy management calibration, the A/D converter, BSI, Btemp, Battery voltage, Charg-
er voltage and Charger current are calibrated. For detailed information and instructions see
EM-calibration instructions in the service manual.

Troubleshooting tips

ADC-offset over limits

Inspect the BSI line, connectors (hotbar and board to board connector) and components in it
(Capacitor C226, ASIP R385, Pull-up resistor R220). If these are OK, change UEM.

BSI Gain over limits

Inspect the BSI line, connectors (hotbar and board to board connector) and components in it
(Capacitor C226, ASIP R385, Pull-up resistor R220). If these are OK, change UEM.

Vbatt offset and Gain

Inspect Vbatt lines and components in it.

Vchar over limits

Inspect components that are connected Vchar line: Filtering capacitors C384, C385, TVS
V381, L380 and Fuse F380. If those are OK, change UEM.

Ichar over limits

Inspect components that are connected Vchar line: Filtering capacitors C384, C385, TVS
V381, L380 and Fuse F380. If those are OK, first change the current sense resistor (R190), if
calibration is not still successful change UEM.

Calibration can be checked using ADC-reading. Known voltages, currents and resistances are
fed and read by ADC-reading, read values and known values can be compared.

ADC-reading

Divided and scaled battery voltage, Charger voltage, Charger current and BSI values can be
read by this tool. Read values a few times before you can be sure that results are accurate.

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Содержание NHL-10

Страница 1: ...ISSUE 2 01 2004 COMPANY CONFIDENTIAL 1 Copyright 2003 Nokia All Rights Reserved Customer Care Solutions Technical Documentation 6 a Baseband Troubleshooting and Manual Tuning Guide ...

Страница 2: ...NHL 10 CCS Technical Documentation Baseband Troubleshooting 2 COMPANY CONFIDENTIAL ISSUE 2 01 2004 Copyright 2003 Nokia All Rights Reserved This page has been deliberately left blank ...

Страница 3: ... ADC reading 14 Backup battery 15 IrDA Interface Fault 17 SIM Card Fault 18 Insert SIM Card in device display although card is inserted 21 Keypad Interface Fault 22 Display Fault 23 Illumination Fault Display Keyboard backlight 24 MMC Interface Fault 25 Audio troubleshooting 26 Microphone 26 Earpiece 28 IHF 30 Accessory detection troubleshooting 32 Camera Module Troubleshooting 33 Terms 33 Image t...

Страница 4: ...ting 4 COMPANY CONFIDENTIAL ISSUE 2 01 2004 Copyright 2003 Nokia All Rights Reserved Calibration procedure with JBV 1 45 Zocus IBAT calibration with MJ 2 module jig 46 Connections 46 Phoenix Setup 46 Zocus IBAT calibration procedure with MJ 2 module jig 47 ...

Страница 5: ... All Rights Reserved Introduction to NHL 10 troubleshooting This document is intended to be a guide for localizing and repairing electrical faults in the NHL 10 device The fault repairing is divided into troubleshooting paths The following diagrams describe baseband troubleshooting Figure 1 Main Troubleshooting Diagram ...

Страница 6: ...fault means that the software is able to run and thus the watchdog of UEM can be served Selftest functions are executed when the phone is powered on and if one or more selftest func tions fail the message Selftest failed Contact service is shown on the display MCU selftest cases can be split into two categories The ones that are executed during power up and the ones that are executed only with a P...

Страница 7: ...NHL 10 Baseband Troubleshooting CCS Technical Documentation ISSUE 2 01 2004 COMPANY CONFIDENTIAL 7 Copyright 2003 Nokia All Rights Reserved Figure 3 BB self test items ...

Страница 8: ...NHL 10 CCS Technical Documentation Baseband Troubleshooting 8 COMPANY CONFIDENTIAL ISSUE 2 01 2004 Copyright 2003 Nokia All Rights Reserved Flash programming fault Figure 4 Flashing troubleshooting ...

Страница 9: ...NHL 10 Baseband Troubleshooting CCS Technical Documentation ISSUE 2 01 2004 COMPANY CONFIDENTIAL 9 Copyright 2003 Nokia All Rights Reserved General Power checking Figure 5 General Power check ...

Страница 10: ... signals In NHL 10 the bus is connected from UPP_WD2 to UEM and the BT module UPP_WD2 takes care of controlling the traffic on the bus If the interface is faulty from the UPP WD2 s end the phone will not boot properly as powering configurations do not work Traffic on the bus can be monitored from three pins on the BT mod ule Pins are shown below Figure 6 CBUS test points CBUS traffic is shown in t...

Страница 11: ...lace or re solder 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 The interface voltage level on the phone flash test pad pattern is 2 78V and on the UPP WD2 end it is 1 8V The functionality of this interface should not affect the device boot into NORMAL LOCAL nor TEST m...

Страница 12: ...004 Copyright 2003 Nokia All Rights Reserved The interface voltage level on the phone flash test pad pattern is 2 78V and on the UPP WD2 end it is 1 8V The MBUS traffic between UPP WD2 and UEM can be tested with PHOENIX ST_MBUS_RX_TX_LOOP_TEST Flashing is not possible if there is a problem in MBUS ...

Страница 13: ... 10 Baseband Troubleshooting CCS Technical Documentation ISSUE 2 01 2004 COMPANY CONFIDENTIAL 13 Copyright 2003 Nokia All Rights Reserved Charger Interface troubleshooting Figure 8 Not charging on display ...

Страница 14: ...NHL 10 CCS Technical Documentation Baseband Troubleshooting 14 COMPANY CONFIDENTIAL ISSUE 2 01 2004 Copyright 2003 Nokia All Rights Reserved Figure 9 Charger nothing happened ...

Страница 15: ...d components in it Capacitor C226 ASIP R385 Pull up resistor R220 If these are OK change UEM Vbatt offset and Gain Inspect Vbatt lines and components in it Vchar over limits Inspect components that are connected Vchar line Filtering capacitors C384 C385 TVS V381 L380 and Fuse F380 If those are OK change UEM Ichar over limits Inspect components that are connected Vchar line Filtering capacitors C38...

Страница 16: ... during a short main battery removal The same symptom can also be seen when the backup battery is empty About 5 hours is need ed to fully charge the backup battery in the device Note The backup battery is charged only at the same time with main battery charging Or when the device is in LOCAL or TEST mode Table 1 Maximum tolerances Reading Check point Tolerance Vbatt SCAL_ 4 2V 25mV Vchar 8 4V 40mV...

Страница 17: ...evice before closing the cover Check with Phoenix that the backup battery is OK Measure the voltage of the backup battery Normal operation when the voltage is 2 0V Fully charged when the voltage is about 3 2V Enable backup battery charging Start to charge the main battery or boot the device to LOCAL or TEST mode Measure the voltage of the backup battery during charging it should arise if it is not...

Страница 18: ...tion Baseband Troubleshooting 18 COMPANY CONFIDENTIAL ISSUE 2 01 2004 Copyright 2003 Nokia All Rights Reserved IrDA Interface Fault At this point it is supposed that the problem is in the HW Figure 11 IrDA interface troubleshooting ...

Страница 19: ...nections The SIM power up down sequence is generated in the UEMK This means that the UEMK gen erates the RST signal to the SIM The card detection is taken from the BSI signal which detects the removal of the battery Monitoring of the BSI signal is done by a comparator inside UEMK The threshold voltage is calculated from the battery size specifications First the SW attempts to power up the SIM with...

Страница 20: ...10 CCS Technical Documentation Baseband Troubleshooting 20 COMPANY CONFIDENTIAL ISSUE 2 01 2004 Copyright 2003 Nokia All Rights Reserved Figure 13 SIM Power up waveform Ch1 VSIM Ch2 I O Ch3 Clock Ch4 Reset ...

Страница 21: ...Baseband Troubleshooting CCS Technical Documentation ISSUE 2 01 2004 COMPANY CONFIDENTIAL 21 Copyright 2003 Nokia All Rights Reserved Figure 14 SIM Answer To Reset waveform Ch1 VSIM Ch2 I O Ch3 Clock Ch4 Reset ...

Страница 22: ... Documentation Baseband Troubleshooting 22 COMPANY CONFIDENTIAL ISSUE 2 01 2004 Copyright 2003 Nokia All Rights Reserved Insert SIM Card in device display although card is inserted Figure 15 Insert SIM Card troubleshooting ...

Страница 23: ...NHL 10 Baseband Troubleshooting CCS Technical Documentation ISSUE 2 01 2004 COMPANY CONFIDENTIAL 23 Copyright 2003 Nokia All Rights Reserved Keypad Interface Fault Figure 16 Keypad troubleshooting ...

Страница 24: ...NHL 10 CCS Technical Documentation Baseband Troubleshooting 24 COMPANY CONFIDENTIAL ISSUE 2 01 2004 Copyright 2003 Nokia All Rights Reserved Display Fault Figure 17 Display troubleshooting VFLASH1 ...

Страница 25: ...and Troubleshooting CCS Technical Documentation ISSUE 2 01 2004 COMPANY CONFIDENTIAL 25 Copyright 2003 Nokia All Rights Reserved Illumination Fault Display Keyboard backlight Figure 18 Illumination troubleshooting ...

Страница 26: ...cal Documentation Baseband Troubleshooting 26 COMPANY CONFIDENTIAL ISSUE 2 01 2004 Copyright 2003 Nokia All Rights Reserved MMC Interface Fault Use with known working MMC to save photo test Figure 19 MMC troubleshooting ...

Страница 27: ...P or HF HFCM Ext Ensure MIC Bias MICB1 is ON Is MIC Bias 2 1V non present at R330 or at the MIC Check R330 R332 and other passive components in MIC Bias path Is MIC Bias 2 1V non present at R330 or at the MIC Change UEM Are the audio signals to UEM OK Check audio path through C330 C331 and associated passive components Check for shorts low impedance to GND opens in series components Change passive...

Страница 28: ... R343 or at the system connector Check R343 R347 and other passive components in MIC Bias path Is MIC Bias 2 1V non present at R343 or at the system connector Change UEM Are the audio signals to UEM OK Check audio path through C345 C346 and associated passives Also check the Hookint route through R361 Check for shorts low impedance to GND opens in series components Change passives w here necessary...

Страница 29: ... voltage seen on the EARP N paths or at the earpiece pads Change UEM Are the audio signals from UEM to the earpiece pads OK Change UEM Does audio w ork in a call Change UPP_ WD2 END No Yes No Yes No Yes No No No Yes Yes Yes Check audio path from UEM to the earpiece pads Check for shorts low impedance to GND or betw een the lines Change passives w here necessary Is the EAR DC Bias voltage seen on t...

Страница 30: ... WD2 END No Yes No Yes No Yes No No No Yes Yes Yes Check audio path through R342 Z330 Z331 and associated passives Check for shorts low impedance to GND opens in series components Change passives w here necessary Audio Troubleshooting External Earpiece Connect a know n w orking 4 terminal DCT4 headset to the system connector Check system connector and PWB contacts Are they OK Clean contacts replac...

Страница 31: ...HF s the DC Bias voltage een on the IHF fferential paths at the HF speaker pads Is VBATHF present Check R362 R363 for low impedance No No Is the Boomer enable line high check at J330 Yes Change UPP_ WD2 No Is the HF HFCM DC Bias seen on the input path to Boomer at C338 C337 Yes Follow the trouble shooting flow chart for External earpiece faults No Check audio path from Boomer N330 to the IHF pads ...

Страница 32: ...in resistors R337 R336 Also check other passives around Boomer especially C334 C336 C337 Is the ac amplitude of the IHF tone signal valid Change Boomer N330 Is the DC bias voltage seen for both differential IHF lines Check audio path from Boomer N330 to the IHF pads through L359 L360 Check for shorts low impedance to GND or betw een the lines Also check passives around Boomer especially R336 to R3...

Страница 33: ...eband Troubleshooting CCS Technical Documentation ISSUE 2 01 2004 COMPANY CONFIDENTIAL 33 Copyright 2003 Nokia All Rights Reserved Accessory detection troubleshooting Figure 25 Accessory detection troubleshooting ...

Страница 34: ...e camera operation has to be checked always in constant conditions lighting temperature or by using a second known to be good device as a reference Experience significantly helps in analysing image quality Terms Dynamic range camera s ability to capture details in dark and bright areas of the scene simul taneously Exposure time camera modules use silicon sensor to collect light and for forming an ...

Страница 35: ...applies particularly to distant objects 1 meter See below Figure 26 Sharpness of picture is worse in edge than in centre Geometrical distortion The camera lens will cause some amount of so called barrel distortion in images In practice this appears as bending of straight objects in edges of the image See the following figure Note the geometrical barrel distortion in background for example wall in ...

Страница 36: ... tilting will occur This phenomena is fundamental to most CMOS camera types and normal and can not be helped Movement of camera or object will usually cause blurring indoors or in dim lighting conditions due to long exposure time Figure 28 Near objects in image get skewed when shooting from a moving car Temperature High temperatures inside the mobile phone will cause more noise to appear in images...

Страница 37: ...easily cured by setting the display contrast to correct value Basic rules of photography especially when shooting against light Electronic image sensors typically have much lower dynamic range than films In practice this means that when taking a picture indoors e g having a window behind object will produce poor results Figure 30 Image which has been taken against the light The actual object a squ...

Страница 38: ...e of image view Especially sun causes clearly visible halo effects and poor contrast in images This happens due to unwanted reflections inside camera optics Figure 32 A lens reflection effect caused by sun shining above the scene Figure 33 A good quality picture taken indoors Note The camera module as a component is not a repairable part i e components in the module may not be changed Cleaning dus...

Страница 39: ...ot always easy Effects of dust in optical path are an example of image containing easily detectable dust prob lems Black spots in image are caused by dirt particles trapped into the optical system clearly visible and sharp edged black dots in the image are typically dust particles on the image sensor These spots are searched for in the manufacturing phase but it is possible that the lens holder ca...

Страница 40: ...also possible that the user has disas sembled the device and caused the problem However in most cases it should be possible to remove the particle s by using compressed air Never wipe the lens surface before trying com pressed air the possibility of damaging the lens is substantial Always check the image sharpness after removing dust Testing for sharpness If pictures taken with some device are cla...

Страница 41: ...colour setting is not sufficient and true colour 24bit 16 million col ours or 32 bit full colour setting is recommended If there appears to be a clearly noticeable difference between the reference image and the test images the module might have a misfocused lens In this case the module should be changed Always re check the resolution after changing the camera If a different module produces the sam...

Страница 42: ... 10 CCS Technical Documentation Baseband Troubleshooting 42 COMPANY CONFIDENTIAL ISSUE 2 01 2004 Copyright 2003 Nokia All Rights Reserved Hardware failure message Figure 35 Hardware failure troubleshooting ...

Страница 43: ...Baseband Troubleshooting CCS Technical Documentation ISSUE 2 01 2004 COMPANY CONFIDENTIAL 43 Copyright 2003 Nokia All Rights Reserved No recognizable viewfinder image Figure 36 No recognizable viewfinder image ...

Страница 44: ...NHL 10 CCS Technical Documentation Baseband Troubleshooting 44 COMPANY CONFIDENTIAL ISSUE 2 01 2004 Copyright 2003 Nokia All Rights Reserved Bad image quality Figure 37 Bad image quality troubleshooting ...

Страница 45: ...ge Charger voltage Charger current Battery Current This is to get accurate conversion result of AD converter Connections The NHL 10 phone must be connected to JBV 1 Docking station with DA 2 Docking station adapter Connect SCB 3 DC DC cable between JBV 1 and charger connector of phone for charger channel calibration Supply 11 16 V DC from external power supply to JBV 1 to power up phone Phoenix Se...

Страница 46: ...nel s you intend to calibrate 3 Press Calibrate 4 Calibration is automatically done regarding the calibration channel s that you selected 5 The candidate of the new calibration values is shown in the calculated field If the new calibration values are within the limit please refer to the calibration value limit table Press Save to phone to store the new calibration value s into the phone 6 Select R...

Страница 47: ...stead of JBV 1 Connections The NHL 10 phone must be placed in MJ 2 Module jig Two external power supplies and an ammeter are needed Supply 3 7 4 0 V DC from external power supply to module jig Phoenix Setup Start Phoenix service software Select FBUS connection Choose Main Choose product NHL 10 Choose Tuning Zocus EM Parameter Min Max ADC Gain 25400 29000 ADC Offset 50 50 BSI Gain 970 1100 VBAT Gai...

Страница 48: ...n ammeter to Ammeter sockets to check the current flowing on the line Be careful for the shunt resistor value of ammeter Large shunt resistor value causes the difficulty of phone power up 3 Set the S1 Passed and S2 Calibration 4 Power up the module jig in local mode the ammeter will indicate the local mode current 5 Connect the charger input to a power supply set to 8 4V and current limited to 500...

Страница 49: ...nto the Measured Cur rent box The value is negative and presented in Amps e g if you measure 502mA then type 0 502 The reading should be to the nearest mA 12 The calibration value appears in the box Zocus_New_Cal To write this to the phone press Write 13 Press Open Charge Switch to stop current flowing 14 Go to the EM calibration window and then check if the battery current IBAT Gain is stored cor...

Страница 50: ...NHL 10 CCS Technical Documentation Baseband Troubleshooting 50 COMPANY CONFIDENTIAL ISSUE 2 01 2004 Copyright 2003 Nokia All Rights Reserved This page has been deliberately left blank ...

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