Nokia N900 Service Manual Download Page 165

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Introduction

Phone description

The device consists of two main mechanical blocks. The lower block holds the main PWB with most of the

electrical components. The upper block is basically the main flex that is connected to the main PWB with a

board-to-board connector. The upper block has the display, touch screen, ambient light sensor, secondary

camera, proximity sensor, RGB indication LED and earpiece.

Functional description

Baseband can be divided into two larger blocks. The application engine (APE) side runs with Linux operating

system which is controlled by OMAP3430 application processor. Most of the peripherals are connected to that.

Also OMAP controls the other major baseband block, the cellular engine side (CMT). The application engine

has 2Gbit of NAND flash and 2Gbit of SDRAM. Memory is stacked on top of the application processor.

Figure 48 System level block diagram

Main components

Function

Description

Item ref

Application engine

OMAP3430

D4800

Application engine EM

ASIC

GAIA

D4200

APE memory

Combo 2G DDR/2G M3

D5000

Cellular engine

RapuYama

D2800

RX-51

System Module

Issue 1

COMPANY CONFIDENTIAL

Page 6 –5

Summary of Contents for N900

Page 2: ...Amendment Record Sheet Amendment No Date Inserted By Comments Issue 1 09 2009 MT RX 51 Amendment Record Sheet Page ii COMPANY CONFIDENTIAL Issue 1 Copyright 2009 Nokia All rights reserved ...

Page 3: ... Under no circumstances shall Nokia be responsible for any loss of data or income or any special incidental consequential or indirect damages howsoever caused The contents of this document are provided as is Except as required by applicable law no warranties of any kind either express or implied including but not limited to the implied warranties of merchantability and fitness for a particular pur...

Page 4: ...EST CONNECTIONS MAKE SURE YOU HAVE SWITCHED OFF ALL EQUIPMENT Cautions Servicing and alignment must be undertaken by qualified personnel only Ensure all work is carried out at an anti static workstation and that an anti static wrist strap is worn Ensure solder wire or foreign matter does not enter the telephone as damage may result Use only approved components as specified in the parts list Ensure...

Page 5: ...can be damaged by static electricity discharge All ESD sensitive parts must be packed in metallized protective bags during shipping and handling outside any ESD Protected Area EPA Every repair action involving opening the product or handling the product components must be done under ESD protection ESD protected spare part packages MUST NOT be opened closed out of an ESD Protected Area For more inf...

Page 6: ...e batteries and warp or melt certain plastics Do not store the phone in cold areas When it warms up to its normal temperature moisture can form inside which may damage electronic circuit boards Do not drop knock or shake the phone Rough handling can break internal circuit boards Do not use harsh chemicals cleaning solvents or strong detergents to clean the phone Do not paint the phone Paint can cl...

Page 7: ...der NOKIA MOBILE PHONES Business Group should be notified in writing e mail Please state Title of the Document Issue Number Date of publication Latest Amendment Number if applicable Page s and or Figure s in error Please send to NOKIA CORPORATION Nokia Mobile Phones Business Group Nokia Customer Care PO Box 86 FIN 24101 SALO Finland E mail Service Manuals nokia com RX 51 Company policy Issue 1 COM...

Page 8: ...ssory available for the product Do not attempt to discharge the battery by any other means Use the battery only for its intended purpose Never use any charger or battery which is damaged Do not short circuit the battery Accidental short circuiting can occur when a metallic object coin clip or pen causes direct connection of the and terminals of the battery metal strips on the battery for example w...

Page 9: ...Service Tools and Service Concepts 3 BB Troubleshooting 4 Cellular RF troubleshooting 5 Camera Module Troubleshooting 6 System Module Glossary RX 51 Nokia N900 L3 4 Service Manual Structure Issue 1 COMPANY CONFIDENTIAL Page ix Copyright 2009 Nokia All rights reserved ...

Page 13: ...50 900 1800 1900 and WCDMA 900 1700 2100 2100 phones 1 11 Battery endurance 1 12 Environmental conditions 1 13 List of Tables Table 1 Audio 1 8 Table 2 Car 1 10 Table 3 Data 1 10 Table 4 GPS 1 10 Table 5 Messaging 1 10 Table 6 Power 1 11 Table 7 Carrying 1 11 List of Figures Figure 1 View of RX 51 1 5 RX 51 General Information Issue 1 COMPANY CONFIDENTIAL Page 1 3 Copyright 2009 Nokia All rights r...

Page 15: ...P AVRCP FTP OPP are supported RX 51 is a LinuX computer with phone functionality a large 3 5 WVGA 800 x 480 pixels display landscape slider and Qwerty keyboard The browser is a highly advanced Internet browser based on Mozilla technology also capable of viewing operator domain XHTML Mobile Profile RX 51 has two cameras The main camera is a 5 Mpix autofocus camera with Carl Zeiss optics and flash T...

Page 16: ...E Image orientation automatic Exposure compensation 2 2EV at 0 5 step White balance automatic sunny cloudy incandescent fluorescent Scene auto sports portrait close up landscape night user defined Colour tone normal sepia B W vivid negative Zoom digital up to 3X Other camera features LED flash and recording indicator Front camera VGA 640 x 480 sensor Edit On device Photo editor View Large 3 5 VGA ...

Page 17: ...264 MPEG 4 Xvid Productivity Messaging E mail SMTP IMAP4 POP3 SMS Office applications Viewing of email attachments pdf PIM Contacts calendar to do notes calculator clock Synchronization Support for MS outlook and smartphone synchronization of contacts calendar and notes Data Calendar Contacts To do Notes E mail PC Applications PC Suite Call management Call logs call waiting call hold call divert V...

Page 18: ...etworks Simple class A multi slot class 32 max speed DL UL 296 177 6 kbits s GPRS class A multi slot class 32 Max Sum 6 max speed DL UL 107 64 2 kbits s EDGE class A multi slot class 32 maximum speed 296 177 6 kbps DL UL A GPS WLAN IEEE 802 11 b g WLAN security WEP WPA WPA2 TCP IP support Capability to serve as data modem via USB connection Sales package Transceiver RX 51 Nokia High Efficiency cha...

Page 19: ...BH 602 BH 600 BH 301 BH 216 BH 215 BH 213 BH 212 BH 208 BH 202 BH 201 BH 200 BH 102 BH 101 BH 1XX Bluetooth stereo headset BH 905 BH 903 BH 605 BH 604 BH 504 BH 501 BH 214 BH 103 Wireless stereo gateway AD 42W RX 51 General Information Issue 1 COMPANY CONFIDENTIAL Page 1 9 Copyright 2009 Nokia All rights reserved ...

Page 20: ... 100 Multimedia car kit CK 300 Table 3 Data Enhancement Type Connectivity cable CA 101 Video connectivity cable CA 75U MicroSD card MAC 16 GB Charging connectivity cable CA 126 Table 4 GPS Enhancement Type Wireless GPS module LD 3W Bluetooth GPS module LD 4W Table 5 Messaging Enhancement Type Digital pen SU 27W Wireless keyboard SU 8W Stylus RX 51 General Information Page 1 10 COMPANY CONFIDENTIAL...

Page 21: ... 2100 2100phones Parameter Unit Cellular system GSM850 EGSM900 GSM1800 1900 WCDMA VIII 900 WCDMA IV 1700 2100 and WCDMA I 2100 Rx frequency band GSM850 869 894 MHz EGSM900 925 960 MHz GSM1800 1805 1880 MHz GSM1900 1930 1990 MHz WCDMA VIII 900 925 960 MHz WCDMA IV 1700 2100 2110 2155 MHz WCDMA I 2100 2110 2170 MHz Tx frequency band GSM850 824 849 MHz EGSM900 880 915 MHz GSM1800 1710 1785 MHz GSM190...

Page 22: ...Bm 1 0mW 360mW EDGE1900 0 25 5 dBm 1 0mW 360mW Number of RF channels GSM850 124 GSM900 174 GSM1800 374 GSM1900 299 WCDMA VIII 900 152 WCDMA IV 1700 2100 210 WCDMA I 2100 277 Channel spacing 200 kHz Number of Tx power levels GSM850 15 GSM900 15 GSM1800 16 GSM1900 16 WCDMA VIII 900 75 WCDMA IV 1700 2100 75 WCDMA I 2100 75 Battery endurance Battery Capacity mAh Talk time Stand by BL 5J 1320 Up to 9 h...

Page 23: ...is 5 95 The HW module is not protected against water Condensed or splashed water might cause malfunction Any submerge of the phone will cause permanent damage Long term high humidity with condensation will cause permanent damage because of corrosion Vibration The module should withstand the following vibrations 5 10 Hz 10dB octave 10 50 Hz 5 58 m2 s3 0 0558 g2 Hz 50 300 Hz 10 dB octave ESD strengt...

Page 27: ...4 Flash concept with FPS 21 2 15 CU 4 flash concept with FPS 21 2 16 Module jig service concept 2 17 Bluetooth test concept with SB 6 2 18 WLAN functionality testing concept with SB 7 2 19 Service concept for RF testing and RF BB tuning 2 20 GPS testing concept with GPS RF coupler 2 21 List of Tables Table 8 Attenuation values 2 12 Table 9 Attenuation values 2 13 List of Figures Figure 2 RX 51 set...

Page 28: ...Figure 8 WLAN functionality testing concept with SB 7 2 19 Figure 9 Service concept for RF testing and RF BB tuning 2 20 Figure 10 RF testing concept with RF coupler 2 21 RX 51 Service Tools and Service Concepts Page 2 4 COMPANY CONFIDENTIAL Issue 1 Copyright 2009 Nokia All rights reserved ...

Page 29: ...ges over current and voltage polarity are performed by CU 4 Flash adapter FS 94 main features VBATT supply interface USB FBUS multiplexed interface to the phone MJ 174 Module jig MJ 174 can be used for flashing as well as for RF battery and system testing MJ 174 main functions CU 4 interface adapter to phone FBUS interface to phone UI Interface to phone WCDMA and GSM RF interface All functions are...

Page 30: ...r RX 51 1575 520152 MHz 110dbm 20db fixed RF attenuator And use the following settings for the SA 131 Base setting 3 Sledge setting 3 Frame setting D4 left GPS Coupler setting D1 Direction Down Attenuation for GPS Coupler 12dbm RF Generator output level e g 110dbm 20dbm fixed attenuation attenuation for GPS Coupler 78dbm RX 51 Service Tools and Service Concepts Page 2 6 COMPANY CONFIDENTIAL Issue ...

Page 31: ...that can be used for testing error analysis and repair of product RX 51 For the correct use of the service devices and the best effort of workbench setup please refer to various concepts RX 51 Service Tools and Service Concepts Issue 1 COMPANY CONFIDENTIAL Page 2 7 Copyright 2009 Nokia All rights reserved ...

Page 32: ...nector Hub FBUS and USB connections supported When using CU 4 note the special order of connecting cables and other service equipment Instructions 1 Connect a service tool jig flash adapter to CU 4 2 Connect CU 4 to your PC with a USB cable 3 Connect supply voltage 12 V 4 Connect an FBUS cable if necessary 5 Start Phoenix service software Note Phoenix enables CU 4 regulators via USB when it is sta...

Page 33: ...ting the external power supply AC 35 Two USB A type ports USB1 USB3 Can be used for example for connecting external storage memory devices or mobile devices One USB B type device connector USB2 For connecting a PC Phone connector Service cable connection for connecting Flashbus FLA Ethernet RJ45 type socket LAN For connecting the FPS 21 to LAN Inside Four SD card memory slots For internal storage ...

Page 34: ...ring and as a rework jig for the system module It is made of lead free rework compatible material SB 6 Bluetooth tester The SB 6 test box is a generic device to perform Bluetooth bit error rate testing and doing cordless FBUS connection via Bluetooth SB 7 WLAN test box WLAN test requires defined position for the device SS 100 Camera removal tool The camera removal tool SS 100 is used to remove att...

Page 35: ... Nokia Standard Toolkit SX 4 Smart card SX 4 is a BB5 security device used to protect critical features in tuning and testing SX 4 is also needed together with FPS 21 when DCT 4 phones are flashed Cables The table below gives a short overview of service devices that can be used for testing error analysis and repair of product RX 51 For the correct use of the service devices and the best effort of ...

Page 36: ...0 WCDMA 1700 2100 0 4 0 6 dB CA 31D USB cable The CA 31D USB cable is used to connect FPS 21 to a PC It is included in the FPS 21 sales package CA 35S Power cable CA 35S is a power cable for connecting for example the FPS 21 flash prommer to the Point Of Sales POS flash adapter RX 51 Service Tools and Service Concepts Page 2 12 COMPANY CONFIDENTIAL Issue 1 Copyright 2009 Nokia All rights reserved ...

Page 37: ...ect for example a module repair jig to the RF measurement equipment SMA to N Connector ca 610 mm Attenuation for GSM850 GSM900 WCDMA900 0 3 0 1 dB GSM1800 GSM1900 WCDMA2100 WCDMA1700 2100 0 5 0 1 dB WLAN 0 6 0 1dB XRS 6 RF cable The RF cable is used to connect for example a module repair jig to the RF measurement equipment SMA to N Connector approximately 610 mm Attenuation for GSM850 GSM900 WCDMA...

Page 38: ...pt Type Description Product specific tools BL 5J Battery Other tools FLS 5 POS flash dongle PC with Phoenix service software Cables CA 101 Micro USB cable RX 51 Service Tools and Service Concepts Page 2 14 COMPANY CONFIDENTIAL Issue 1 Copyright 2009 Nokia All rights reserved ...

Page 39: ...pter Other devices FPS 21 Flash prommer box AC 35 Power supply PK 1 SW security device SS 46 Interface adapter PC with Phoenix service software Cables CA 89DS Service cable USB cable CA 101 Micro USB cable RX 51 Service Tools and Service Concepts Issue 1 COMPANY CONFIDENTIAL Page 2 15 Copyright 2009 Nokia All rights reserved ...

Page 40: ...21 Flash prommer box AC 35 Power supply PK 1 SW security device SS 62 Flash adapter base SX 4 Smart card for DCT 4 generation mobile device programming PC with Phoenix service software Cables PCS 1 Power cable CA 89DS Service cable Standard USB cable RX 51 Service Tools and Service Concepts Page 2 16 COMPANY CONFIDENTIAL Issue 1 Copyright 2009 Nokia All rights reserved ...

Page 41: ...4 Module jig Other devices CU 4 Control unit FPS 21 Flash prommer box PK 1 SW security device SX 4 Smart card PC with VPOS and Phoenix service software Measurement equipment Cables CA 89DS Service cable PCS 1 DC power cable XRS 6 RF cable RX 51 Service Tools and Service Concepts Issue 1 COMPANY CONFIDENTIAL Page 2 17 Copyright 2009 Nokia All rights reserved ...

Page 42: ...cific tools FS 94 Flash adapter Other tools CU 4 Control unit PK 1 SW Security device SS 62 Generic base adapter SB 6 BT test box ACP 8 Charger for SB 6 Cables PCS 1 Power cable DAU 9S Cable PCS 1 DC power cable Standard USB cable RX 51 Service Tools and Service Concepts Page 2 18 COMPANY CONFIDENTIAL Issue 1 Copyright 2009 Nokia All rights reserved ...

Page 43: ...oduct specific tools FS 94 Flash adapter Other tools CU 4 Control unit PCS 1 DC power cable PK 1 SW Security device SS 62 Generic base adapter Cables PCS 1 Power cable DAU 9S Cable Standard USB cable RX 51 Service Tools and Service Concepts Issue 1 COMPANY CONFIDENTIAL Page 2 19 Copyright 2009 Nokia All rights reserved ...

Page 44: ...ule jig Other devices CU 4 Control unit PK 1 PKD 1 SW security device SX 4 Smart card Measurement equipment Smart card reader PC with Phoenix service software Cables DAU 9S MBUS cable PCS 1 DC power cable XRS 6 RF cable GPIB control cable RX 51 Service Tools and Service Concepts Page 2 20 COMPANY CONFIDENTIAL Issue 1 Copyright 2009 Nokia All rights reserved ...

Page 45: ... 94 Flash adapter SA 131 GPS RF coupler Other devices CU 4 Control unit SX 4 Smart card JXS 1 RF shield box PK 1 SW security device SS 62 Flash adapter base Smart card reader Measurement equipment PC with Phoenix service software Cables RX 51 Service Tools and Service Concepts Issue 1 COMPANY CONFIDENTIAL Page 2 21 Copyright 2009 Nokia All rights reserved ...

Page 46: ...product specific adapter cable PCS 1 Power cable DAU 9S MBUS cable XRS 6 RF cable 20dB attenuator Interface cable USB cable RX 51 Service Tools and Service Concepts Page 2 22 COMPANY CONFIDENTIAL Issue 1 Copyright 2009 Nokia All rights reserved ...

Page 49: ...oting 3 27 Volume keys troubleshooting 3 27 Keyboard troubleshooting 3 29 Camera key troubleshooting 3 29 Sensors troubleshooting 3 31 Slide detection troubleshooting 3 31 Camera cover troubleshooting 3 31 Battery cover detection troubleshooting 3 33 Proximity sensor troubleshooting 3 33 Audio troubleshooting 3 35 Audio troubleshooting test instructions 3 35 External earpiece troubleshooting 3 37 ...

Page 50: ...ng 3 70 Checking validity of signals 3 70 FMTx2 1 troubleshooting faults 3 71 Phoenix PC tool 3 71 List of Tables Table 10 Display module troubleshooting cases 3 19 Table 11 Pixel defects 3 19 Table 12 Defects table 3 20 Table 13 Left and right audio self test truth table 3 74 List of Figures Figure 11 Ambient Light Sensor 3 44 Figure 12 Bluetooth WLAN antenna 3 47 Figure 13 BT FM component layout...

Page 65: ... of the image can be missing If a part of the image is missing change the display module If the image is otherwise corrupted follow the appropriate troubleshooting diagram Backlight dim or not working at all Backlight LED components are inside the display module Backlight failure can also be in the connector or in the backlight power source in the main engine of the phone Backlight is also control...

Page 66: ...ibit temporal variations not related to any steady state video input Temporal sub pixel defects may be intermittent exhibit a sudden change of state or be flickering Table 12 Defects table Item Bright dot sub pixel defect Dark dot sub pixel defect Total 1 Defect counts Not allowed 2 Combined sub pixel defect Not allowed 3 Temporal sub pixel defect Not allowed Note Blinking pixels are not allowed i...

Page 71: ...Illumination troubleshooting Qwerty keyboard illumination troubleshooting Troubleshooting flow RX 51 BB Troubleshooting Issue 1 COMPANY CONFIDENTIAL Page 3 25 Copyright 2009 Nokia All rights reserved ...

Page 77: ...Sensors troubleshooting Slide detection troubleshooting Troubleshooting flow RX 51 BB Troubleshooting Issue 1 COMPANY CONFIDENTIAL Page 3 31 Copyright 2009 Nokia All rights reserved ...

Page 81: ... 4231 calibrator Test procedure Audio can be tested using the Phoenix audio routings option Three different audio loop paths can be activated External headset mic to earpiece External headset mic to IHF mono Internal digital microphone to headset Each audio loop sets routing from the specified input to the specified output enabling a quick in out test Loop path gains are fixed and they cannot be c...

Page 82: ...t voltage mVp p External headset mic to IHF mono HS_MIC GND L4855 L4856 10 200 630 L4857 L4858 Internal digital micropho ne to headset Acoustica l Input 1kHz sine wave HS_L GND NA 94 dBSPL 70 HS_R GND RX 51 BB Troubleshooting Page 3 36 COMPANY CONFIDENTIAL Issue 1 Copyright 2009 Nokia All rights reserved ...

Page 90: ...immed when environment lighting is dark Ambient Light Sensor is calibrated in production and can be re tuned in service points though not recommended unless calibration coefficient are lost for some reason ALS troubleshooting Context Functionality check Steps 1 Connect phone to Phoenix and set the phone e g on the table so that the amount of ambient light seen by ALS is as stable as possible 2 Sta...

Page 91: ...n doing the ALS calibration procedure it is required to have a reference phone which includes calibrated ALS ALS re tuning instructions show why the reference phone is needed Re tuning ALS Steps 1 Connect reference phone to Phoenix and set the phone e g on the table so that the amount of ambient light seen by ALS is as stable as possible 2 Start Phoenix 3 Choose File Scan Product RX 51 BB Troubles...

Page 92: ... Co efficient calculated in step 7 Note that decimal numbers should be used in the iteration in order to achieve enough precision e g 200 2455 9 After having same Co efficient value in Co efficient textbox as the calculated value make sure that ambient light values read using Testing Display Test Luminance textbox are almost the same in reference phone and calibrated phone Remember that illuminanc...

Page 93: ...t unable to detect other Bluetooth devices Open circuit solder joints or antenna pins not making contact with Bluetooth WLAN antenna Repair or replace Bluetooth WLAN antenna Able to turn on FM radio and Bluetooth on phone user interface but unable to detect local FM radio stations with Nokia headset inserted Open circuit solder joints or detached component in FM antenna circuit Checkantennapincont...

Page 94: ...tooth Self Test ST_LPRF_AUDIO_LINES_TEST Bluetooth ASIC PCM interface Replacement of Bluetooth FM ASIC or repair of phone BB Bluetooth Functional Test BER test with BT Box or functional test with other Bluetooth device Bluetooth antenna circuit Repair of Bluetooth antenna circuit including RF filter or WLAN switch if fitted FM Radio Self Test ST_RADIO_TEST FM Radio I2C interface Replacement of Blu...

Page 95: ...st Prerequisites JBT 9 or SB 6 Bluetooth test box BT box is required to perform a BER test If a BT box not available Bluetooth functionality can be checked by transferring a file to another Bluetooth phone Steps 1 Connect data cable to phone 2 Start Phoenix service software 3 Choose File Scan Product 4 Choose Testing Bluetooth LOCALS 5 Locate the BT box serial number 12 digits found in the type la...

Page 96: ...ftware 3 Choose File Scan Product 4 From the Mode drop down menu set mode to Local 5 Choose Testing Self Tests 6 In the Self Tests window check the following Bluetooth and FM radio related tests ST_LPRF_IF_TEST ST_LPRF_AUDIO_LINES_TEST ST_BT_WAKEUP_TEST ST_RADIO_TEST 7 To run the tests click Start Figure 14 Bluetooth and FM radio self tests in Phoenix RX 51 BB Troubleshooting Page 3 50 COMPANY CON...

Page 99: ... the Nokia headset to the phone s AV connector 3 Use Scroll button to autotune to the radio frequency 4 Set volume to suitable level 5 Check audio quality with a headset GPS troubleshooting GPS layout and basic test points The GPS components are located on the top side of the PWB Satellite signals are picked up by the GPS antenna in the B cover The signal is then routed through a filter before bei...

Page 100: ...W Test confirms end to end connectivity between the GPS antenna and the GPS ASIC It also contains a receive button Before this test is performed a known good phone should be tested in order to calibrate the setup The signal level of the Signal Generator should be adjusted so a reading of SNR 35 dB is achieved with the reference unit A good starting point is to set up the signal generator to 50 dBm...

Page 101: ...evel with a known good phone Signal level will be high approx 45dBm because it is a leakage connection Context Use the following to test GPS using Phoenix Steps 1 Place phone to Flash Adaptor 2 Start Phoenix service software 3 From the File menu select Scan Product and check that the correct product version is displayed RX 51 BB Troubleshooting Issue 1 COMPANY CONFIDENTIAL Page 3 55 Copyright 2009...

Page 102: ...elect Idle to confirm the GPS is enabled and is in idle mode at this point all clocks should be present GPS_En_Reset SleepX should be high and Vdd_Dig Vcc_TCXO Vcc_PLL VCO will be present Receiver On turns on all RF sections of the ASIC and so all LDOs will be on RX 51 BB Troubleshooting Page 3 56 COMPANY CONFIDENTIAL Issue 1 Copyright 2009 Nokia All rights reserved ...

Page 104: ...rt button The test turns on the WLAN sets up the SPI interface and then downloads the WLAN firmware into the WLAN module During the download the WLAN acknowledges the data blocks and so the self test is a good way to confirm that the WLAN module is communicating with the Host The result column will change to Passed after a few seconds if operating properly In addition a test of the WLAN to BTH int...

Page 105: ...he WLAN configuration dialogue box below Selecting the Power state option button as indicated the WLAN can be turned ON and OFF 1 With Power State set to OFF measure the dc power supply current consumption of the flash adaptor 2 Next return the Power state to ON and re measure the dc power supply current of the flash adaptor The difference between the currents in 1 and 2 should be between 190 to 2...

Page 106: ...e To start the test select the Start option button 1 Monitor the WLAN TX spectrum on a Spectrum analyser When making a radiated test ensure that other WLAN devices are not transmitting as these may be detected as well confusing the result A typical 11MBPS TX spectrum is shown in figure below 2 To finish the test select the Finish option button The difference between the two readings should be appr...

Page 107: ...h The simplest is to use the WLAN to report Rx packets when operating in an area where there is an active WLAN network Simply starting an Rx test will show the number of packets detected by the WLAN module as it monitors the network However it does require a properly configured WLAN network RX 51 BB Troubleshooting Issue 1 COMPANY CONFIDENTIAL Page 3 61 Copyright 2009 Nokia All rights reserved ...

Page 108: ... rate Monitoring the detected frames is a simple method to verify the WLAN antenna and receiver path is working properly WLAN auto tuning In case of WLAN ASIC change RF power auto tuning is needed Connect WLAN RF test connector to CMU200 input using proper RF cable Start Phoenix WLAN autotune window Check the settings and verify your PC communicates with CMU200 via GPIB Auto tuning procedure 1 Sta...

Page 110: ... half loop antenna requires two connection points signal C clip X6189 and ground PWB opening in the another end of the FMTX antenna It is important to check these connection points for damage or dirt since the performance of the FMTx 2 1 implementation will be severely impaired if these connections are not in good condition RX 51 BB Troubleshooting Page 3 64 COMPANY CONFIDENTIAL Issue 1 Copyright ...

Page 111: ...on the various pins of the device VIO VDD VIO should be in the range 1 5 to 3 6 Volts VDD should be in the range 2 7 to 5 5 Volts _RST Also the _RST signal to the device can be monitored through test pin J6185 This is an active low signal and should only be asserted during power up FMTx2 1 specific RF test points TXO FMTX output power can be measured from capacitor C6183 and probe access can be ob...

Page 112: ... adjusts its dividers in order to maintain the required output frequency Using this method it is possible to reduce the effective ppm of the reference clock down to 14ppm over the full operating temperature range of 15 to 50 degrees Centigrade General visual inspection guidelines If the handset has the FMTx antenna in the B cover then check the condition of the antenna springs and trace Check that...

Page 116: ...1 and R6182 will be dependant on the audio content being injected to the device During the audio self test initiated from Phoenix it is possible to monitor these pins and check that the DSP generated 1KHz tones can be seen at some point during the test Check that the signals are clean and that no obvious distortion can be seen such as clipping of the signals RX 51 BB Troubleshooting Page 3 70 COMP...

Page 117: ...ons or broken components solder joints Any faults relating to poor FM transmitter performance or frequent failure to locate usable frequencies when performing a scan are likely to be due to some kind of antenna issues In handsets that utilise an antenna solution in a removable cover it is likely that the connecting interface pins are either damaged dirty or that the cover fits poorly perhaps due t...

Page 118: ... frequency and clicking on Activate will turn on the FMTx feature and will begin transmitting the carrier on the selected frequency Note Unless this carrier signal is modulated with some audio either via the music player or a DSP or Si4713 generated tone then all that will be heard if an RX 51 BB Troubleshooting Page 3 72 COMPANY CONFIDENTIAL Issue 1 Copyright 2009 Nokia All rights reserved ...

Page 119: ...allows an RDS capable FM receiver to follow the transmissions of the FM transmitter automatically FMTx 2 1 status panel This provides information on the state of the FMTx feature This can be polled by Phoenix at regular intervals defined by the user when the Read periodically each check box is checked The status can otherwise be read at any point by clicking on the Read button The MCC value is the...

Page 120: ... If an over deviation indication is detected on 2 then the audio channels must be shorted together This is a fail condition For 3 a returned value of zero is expected This indicates that there is an over deviation condition which in turn indicates that the other audio input channel is connected correctly If on 3 there is no over deviation response then the other channel must be open circuit at som...

Page 121: ...connected to the TXO pin 4 The inline resistor connected to the TXO pin 4 if fitted The ESD diode package connected to the TXO pin 4 if fitted This procedure follows the alignment that is done in the factory to ensure that the FMTx 2 1 solution is aligned to provide the correct Tx output power for the relevant legislations such as FCC and ETSI RX 51 BB Troubleshooting Issue 1 COMPANY CONFIDENTIAL ...

Page 125: ...iver troubleshooting flowchart 4 13 Transmitter troubleshooting 4 13 General instructions for transmitter TX troubleshooting 4 13 GSM transmitter troubleshooting 4 14 WCDMA transmitter troubleshooting 4 16 Antenna 4 17 Antenna troubleshooting 4 17 List of Figures Figure 24 Cellular RF test points 1 4 5 Figure 25 Cellular RF test points 2 4 6 Figure 26 Phoenix GSM RSSI reading window 4 9 Figure 27 ...

Page 127: ... is only possible to perform the measurements in a good RF shielded room Even low power WCDMA transmitters may disturb nearby WCDMA networks and cause problems to 3G cellular phone communication in a wide area Note All communication Test Set Screen dumps are from CMU200 Other testers are different Note All measurements with an RF coupler should be performed in an RF shielded environment because ne...

Page 128: ...ed to align the phone s RF part easier and faster It performs calibrations tunings and measurements of RX and TX The results are displayed and logged in a result file if initiated Hardware set up For hardware requirements for auto tuning please refer to Service concept for RF testing and RF BB tuning in section Service Tools and Service Concepts Phoenix preparations Install the phone specific data...

Page 129: ...ote Self tests are recommended to be made when phone is in jig and 50 Ohm load is connected to RF connector Otherwise powertests may fail depending on antenna load RX 51 Cellular RF troubleshooting Issue 1 COMPANY CONFIDENTIAL Page 4 7 Copyright 2009 Nokia All rights reserved ...

Page 131: ... Make the following settings in Phoenix service software Setting GSM850 GSM900 GSM1800 GSM1900 Phoenix Channel 190 37 700 661 Signal generator to antenna connector 881 66771MHz 942 46771MHz 1842 86771MHz 1960 06771MHz 67 71kHz offset 67 71kHz offset 67 71kHz offset 67 71kHz offset at 60dBm at 60dBm at 60dBm at 60dBm Steps 1 Set the phone to local mode 2 Activate RSSI reading in Phoenix Testing GSM...

Page 132: ...RX chain activation for manual measurement Steps 1 Via Phoenix Testing menu choose WCDMA RX Control 2 In the RX control window make the following settings RX 51 Cellular RF troubleshooting Page 4 10 COMPANY CONFIDENTIAL Issue 1 Copyright 2009 Nokia All rights reserved ...

Page 133: ...ontrol if it was active WCDMA RSSI measurement Prerequisites WCDMA RX must be activated before RSSI can be measured For instructions please refer to WCDMA RX chain activation Connect signal generator to RF connector and use appropriate frequency for each channel 2141MHz for channel 10700 WCDMA band I WCDMA modulation Steps 1 Set the following RF generator settings RX 51 Cellular RF troubleshooting...

Page 134: ...er measurement 3 In the RX power measurement window make the following settings Figure 29 Phoenix WCDMA RX power measurement window 4 Click Start to perform the measurement Note WCDMA RSSI measurement is accurate only with WCDMA modulated signal RX 51 Cellular RF troubleshooting Page 4 12 COMPANY CONFIDENTIAL Issue 1 Copyright 2009 Nokia All rights reserved ...

Page 135: ...The most useful Phoenix tool for GSM transmitter testing is RF Controls in WCDMA transmitter testing the best tool is TX Control Remember that re tuning is not a fix Phones are tuned correctly in production Note Never activate the GSM or WCDMA transmitter without a proper antenna load Always connect a 50 Ω load to the RF connector antenna RF measurement equipment or at least a 2 W dummy load other...

Page 136: ...ake settings as shown in the figure Figure 30 Phoenix GSM RF controls window 3 Check the basic TX parameters i e power phase error modulation and switching spectrum using a communication analyser for example CMU200 RX 51 Cellular RF troubleshooting Page 4 14 COMPANY CONFIDENTIAL Issue 1 Copyright 2009 Nokia All rights reserved ...

Page 137: ...4 Change power level RF controls and make sure the power reading follows accordingly RX 51 Cellular RF troubleshooting Issue 1 COMPANY CONFIDENTIAL Page 4 15 Copyright 2009 Nokia All rights reserved ...

Page 138: ...ol 3 In the TX control window make settings as in the picture Note For WCDMA TX channels band I 9750 IV 1412 VIII 2787 4 Click Send to enable the settings and activate TX If settings are changed eg new channel you have to click RF Stop and Send again 5 Check the basic TX parameters using a communication analyzer for example CMU200 RX 51 Cellular RF troubleshooting Page 4 16 COMPANY CONFIDENTIAL Is...

Page 139: ...eshooting Antenna contacts visual check In the main antenna there is one feed and two GND contacts Check that the GND and feed pads take proper contact to the C clips on the main PWB The antenna contact pads 3 pcs are shown in the figure below RX 51 Cellular RF troubleshooting Issue 1 COMPANY CONFIDENTIAL Page 4 17 Copyright 2009 Nokia All rights reserved ...

Page 143: ...Figure 34 Near objects get skewed when taking images from a moving vehicle 5 7 Figure 35 Noisy image taken in 70 degrees Celsius 5 8 Figure 36 Image taken against light 5 8 Figure 37 Flicker in an image object illuminated by strong fluorescent light 5 9 Figure 38 A lens reflection effect caused by sunshine 5 9 Figure 39 Good image taken indoors 5 10 Figure 40 Good image taken outdoors 5 10 Figure ...

Page 145: ...es camera to take sharp images of objects positioned between 10cm to infinity During AF the viewfinder image will be momentarily blurred as the camera searches for the right focus setting Digital zoom Digital zoom is done by first cropping the image by the zoom ratio and then upscaling it to the output resolution This will decrease the image quality especially with high zoom ratios Dynamic range C...

Page 146: ...ule is specified to operate satisfactorily from 10 cm to infinite distance of scene objects Trying to photograph objects closer than 10 cm is likely to result in a blurred out of focus image The lack of sharpness is first visible in full resolution images Images taken very close to the subject a limited depth of focus will be visible that is the upper or lower parts of the image may be out of focu...

Page 147: ...ra module Figure 34 Near objects get skewed when taking images from a moving vehicle Temperature High temperatures inside the mobile phone cause more noise to appear in images For example in 70 degrees Celsius the noise level may be very high and it further grows if the conditions are dim If the phone processor has been heavily loaded for a long time before taking an image the phone might have con...

Page 148: ...le a window behind the object the result is usually poor This is normal behaviour do not change the camera module Figure 36 Image taken against light Flicker In some occasions a bright fluorescent light may cause flicker in the viewfinder and captured image This phenomenon may also be a result if images are taken indoors under the mismatch of 50 60 Hz electricity network frequency The electricity ...

Page 149: ...or contrast in images This happens because of undesired reflections inside the camera optics Generally this kind of reflections are common in all optical systems This is normal behaviour do not change the camera module Figure 38 A lens reflection effect caused by sunshine RX 51 Camera Module Troubleshooting Issue 1 COMPANY CONFIDENTIAL Page 5 9 Copyright 2009 Nokia All rights reserved ...

Page 150: ...he testing by narrowing down the amount of test cases The following types of image quality problems may be expected to appear Dust black spots Lack of sharpness Bit errors In addition there are many other kinds of possibilities for bad image quality but those are ruled out from the scope of this document since the probability of their appearance is small RX 51 Camera Module Troubleshooting Page 5 ...

Page 151: ...esent when the service technician analyses the phone If a dust particle is lying on the infrared filter surface on either side they are hard to locate because they are out of focus and appear in the image as large grayish and fading edge blobs Sometimes they are invisible to the eye and thus the user probably does not notice them at all However it is possible that a larger particle disturbs the us...

Page 152: ...ther image of the same scene taken with a different device Note that the reference device has to be a similar Nokia phone There are several conditions in which AF operation is challenging for the camera module i e failing from time to time These include Low light scenes and night mode Scenes with low contrast Fast moving objects AF operation is disabled on purpose in night landscape and sports mod...

Page 153: ... the window has been dirty when some image has been taken or if something else has been wrong That is why the cleanness of the protection window should always be checked and the window should be wiped clean with a suitable cloth Figure 42 Image taken with clear protection window Figure 43 Image taken with greasy protection window Bright point light sources might cause images that have flares aroun...

Page 154: ...e replaced If the pixel remains always saturated to its maximum value it is stuck Stuck pixels may appear as red green blue or white spots in all lightning conditions Camera modules producing images with one or more stuck pixels should be replaced Hot pixels are pixels that easily saturate in dim light conditions It is normal to get a lot of noise and hot pixels in night conditions or otherwise da...

Page 155: ...r temperature and ambient lightning This is unwanted but normal feature Dust reflections Dust or water drops in front of the flash unit may reflect strongly to the camera sensor See the following figure Figure 47 Light from the flash has reflected on particles in front of the camera RX 51 Camera Module Troubleshooting Issue 1 COMPANY CONFIDENTIAL Page 5 15 Copyright 2009 Nokia All rights reserved ...

Page 156: ...ack camera troubleshooting flowcharts No recognizable viewfinder image Troubleshooting flow RX 51 Camera Module Troubleshooting Page 5 16 COMPANY CONFIDENTIAL Issue 1 Copyright 2009 Nokia All rights reserved ...

Page 163: ...yboard 6 16 Cameras 6 17 Illumination 6 17 Sensors 6 17 TV out interface 6 18 Consumer infrared transmitter CIR 6 18 Audio concept 6 18 Audio HW architecture 6 18 Cellular RF technical description 6 20 RF block diagram 6 20 Receiver RX 6 22 Transmitter TX 6 22 Frequency mappings 6 23 GSM850 frequencies 6 23 EGSM900 frequencies 6 23 GSM1800 frequencies 6 24 GSM1900 frequencies 6 26 WCDMA 2100 Rx fr...

Page 164: ...ram 6 12 Figure 53 GPS module block diagram 6 13 Figure 54 WLAN module block diagram 6 14 Figure 55 FM transmitter 6 15 Figure 56 Top level audio architecture 6 18 Figure 57 Audio HW block diagram 6 19 Figure 58 Cellular RF block diagram RX 51 using RF ASIC N7500 6 20 Figure 59 Cellular RF BB interface 6 21 RX 51 System Module Page 6 4 COMPANY CONFIDENTIAL Issue 1 Copyright 2009 Nokia All rights r...

Page 165: ...ication engine APE side runs with Linux operating system which is controlled by OMAP3430 application processor Most of the peripherals are connected to that Also OMAP controls the other major baseband block the cellular engine side CMT The application engine has 2Gbit of NAND flash and 2Gbit of SDRAM Memory is stacked on top of the application processor Figure 48 System level block diagram Main co...

Page 166: ...scillator VCTCXO 38 4MHZ G7500 TCXO 19 2 MHz G4246 TCXO 38 4 MHz G6450 TCXO 16 368 G6200 Sleep clock Crystal 32 768kHz B2200 B4240 MicroSD reader X5210 SIM card reader X2700 eMMC 32 GB eMMC D5200 FM transmitter SI4713 N6150 Display backlight driver TK65604 N1350 Accelerometer 3 axis accelerometer N7001 Audio codec AIC34 dual audio codec N4040 Consumer IR transmitter CIR LED V1360 Ambient light sen...

Page 167: ...he micro USB connector The phone supports dedicated host or hub chargers Charging is controlled by energy management and external components are needed to protect the baseband module against EMC reverse polarity and transient frequency deviation USB charging circuit consists of USB charging chip BQ24150 and USB transceiver ISP1707 USB wall charger is detected with ISP1707 USB transceiver It can di...

Page 168: ...ging with 100mA if a battery level is under 3 5V but a cold flashing is prevented with low battery this ensures that there are no reset loops Rom code has a 3 sec timeout for USB enumeration Backup battery When the main battery is not attached APE side EM ASIC goes in backup mode using back up battery that supplies voltage to RTC in EM ASIC CMT side does not have its own backup battery Normal and ...

Page 169: ...re enabled SW checks if there is some reason to keep the power on If not the system is set to power off state by watchdog Power up can be caused by the following reasons Power key is pressed Charger is connected RTC alarm occurs MBUS wakeup APE engine is the master that handles the device start up After the APE side is up it can release the CMT side from reset state Figure 50 APE and CMT control s...

Page 171: ...Bluetooth and FM radio receiver are provided by the same ASIC Broadcom BCM2048 The device supports Bluetooth operation and FM radio rececption in both European and USA bands The UART interface allows the device to communicate with the phone baseband engine using Bluetooth HCI commands Commands to the FM radio can also be sent over the I2C interface When Bluetooth is switched on the phone user inte...

Page 172: ...The audio signal from the FM radio is routed via the phone Audio ASIC to the phone headset or loudspeaker The external wired headset is also used as an Antenna for the FM radio The FM radio receiver RF signal is routed from the ASIC via a buried track to an impedance matching circuit placed near the headset connector The following block diagram shows how Bluetooth FM is connected to the host engin...

Page 173: ...ule is configured as OMAP engine SPI slave WLAN and Bluetooth co existence is supported via BTH WLAN interface WLANSize4 0 has a reference clock of external oscillator 38 4MHz and it is shared with Bluetooth RX 51 System Module Issue 1 COMPANY CONFIDENTIAL Page 6 13 Copyright 2009 Nokia All rights reserved ...

Page 174: ...nsmitter module The FM transmitter module Si4713 is controlled by I2C from OMAP with left and right analog audio input from the audio circuitry RX 51 System Module Page 6 14 COMPANY CONFIDENTIAL Issue 1 Copyright 2009 Nokia All rights reserved ...

Page 175: ...e Memory card interfaces There are two memory card interfaces One for internal mass memory called eMMC and one for hot swappable microSD card Both are standard MMC SD interfaces Both interfaces use 48 MHz clock MicroSD uses 4 datalines and eMMC uses 8 datalines Both cards are protected against sudden battery removal with a magnetic sensor that recognizes the removal of battery cover When the batte...

Page 176: ...with a board to board connector The display is backlit with 6 LEDs and a separate backlight driver is used to power the LEDs as two series of 3 The display also has content adaptive backlight control It means that backlight can be increased or decreased from a wanted value based on the content on the screen thus saving in power consumption Touch screen The main input method for the user interface ...

Page 177: ... to protect memory cards from battery removal It also enables hot swapping of the memory card Slide sensor Slide sensor is an MR sensor which also uses magnets for state switching In this device it is used to detect the slide movement that reveals the qwerty keyboard Camera door sensor Camera door has an optical sensor that detects when it is opened It is used to automatically open the camera appl...

Page 178: ...dio hardware is built around AIC34 audio codec AIC34 contains two individual audio codecs which are improved versions of AIC33 codec AIC34 codec partitions are named A and B which are referenced in this document as AIC34_A and AIC34_B OMAP is connected to AIC34_A AIC34_B is used to amplify earpiece signal and to provide bias voltage for AV interface microphone There are no digital or analog audio ...

Page 180: ...lar RF technical description RF block diagram Figure 58 Cellular RF block diagram RX 51 using RF ASIC N7500 RX 51 System Module Page 6 20 COMPANY CONFIDENTIAL Issue 1 Copyright 2009 Nokia All rights reserved ...

Page 181: ...e RF block diagram uses RF ASIC N7500 that performs the RF back end functions of receive and transmit function of the cellular transceiver RX 51 System Module Issue 1 COMPANY CONFIDENTIAL Page 6 21 Copyright 2009 Nokia All rights reserved ...

Page 182: ...GSM and WCDMA is the same Transmitter TX The digital baseband signal eg from the microphone is converted to an analogue signal which is then amplified and transmitted from the antenna The frequency of this signal can be tuned to match the bandwith of the system in use eg GSM900 The transmitter functions are implemented in the RF ASIC Even though the GSM and WCDMA signals are sent via different com...

Page 190: ...3720 2726 885 2 3540 8 2951 930 2 3720 8 2727 885 4 3541 6 2952 930 4 3721 6 2728 885 6 3542 4 2953 930 6 3722 4 2729 885 8 3543 2 2954 930 8 3723 2 2730 886 3544 2955 931 3724 2731 886 2 3544 8 2956 931 2 3724 8 2732 886 4 3545 6 2957 931 4 3725 6 2733 886 6 3546 4 2958 931 6 3726 4 2734 886 8 3547 2 2959 931 8 3727 2 2735 887 3548 2960 932 3728 2736 887 2 3548 8 2961 932 2 3728 8 2737 887 4 3549...

Page 191: ... 892 3568 2985 937 3748 2761 892 2 3568 8 2986 937 2 3748 8 2762 892 4 3569 6 2987 937 4 3749 6 2763 892 6 3570 4 2988 937 6 3750 4 2764 892 8 3571 2 2989 937 8 3751 2 2765 893 3572 2990 938 3752 2766 893 2 3572 8 2991 938 2 3752 8 2767 893 4 3573 6 2992 938 4 3753 6 2768 893 6 3574 4 2993 938 6 3754 4 2769 893 8 3575 2 2994 938 8 3755 2 2770 894 3576 2995 939 3756 2771 894 2 3576 8 2996 939 2 375...

Page 192: ... 899 3596 3020 944 3776 2796 899 2 3596 8 3021 944 2 3776 8 2797 899 4 3597 6 3022 944 4 3777 6 2798 899 6 3598 4 3023 944 6 3778 4 2799 899 8 3599 2 3024 944 8 3779 2 2800 900 3600 3025 945 3780 2801 900 2 3600 8 3026 945 2 3780 8 2802 900 4 3601 6 3027 945 4 3781 6 2803 900 6 3602 4 3028 945 6 3782 4 2804 900 8 3603 2 3029 945 8 3783 2 2805 901 3604 3030 946 3784 2806 901 2 3604 8 3031 946 2 378...

Page 193: ... 906 3624 3055 951 3804 2831 906 2 3624 8 3056 951 2 3804 8 2832 906 4 3625 6 3057 951 4 3805 6 2833 906 6 3626 4 3058 951 6 3806 4 2834 906 8 3627 2 3059 951 8 3807 2 2835 907 3628 3060 952 3808 2836 907 2 3628 8 3061 952 2 3808 8 2837 907 4 3629 6 3062 952 4 3809 6 2838 907 6 3630 4 3063 952 6 3810 4 2839 907 8 3631 2 3064 952 8 3811 2 2840 908 3632 3065 953 3812 2841 908 2 3632 8 3066 953 2 381...

Page 194: ... 955 8 3823 2 2855 911 3644 3080 956 3824 2856 911 2 3644 8 3081 956 2 3824 8 2857 911 4 3645 6 3082 956 4 3825 6 2858 911 6 3646 4 3083 956 6 3826 4 2859 911 8 3647 2 3084 956 8 3827 2 2860 912 3648 3085 957 3828 2861 912 2 3648 8 3086 957 2 3828 8 2862 912 4 3649 6 3087 957 4 3829 6 2863 912 6 3650 4 3088 957 6 3830 4 RX 51 System Module Page 6 34 COMPANY CONFIDENTIAL Issue 1 Copyright 2009 Noki...

Page 197: ...e Indicator BT Bluetooth CBus MCU controlled serial bus connected to UPP_WD2 UEME and Zocus CCP Compact Camera Port CDMA Code division multiple access CDSP Cellular DSP expected to run at low levels CLDC Connected limited device configuration CMOS Complimentary metal oxide semiconductor circuit low power consumption COF Chip on Foil COG Chip on Glass CPU Central Processing Unit CSD Circuit switche...

Page 198: ...compensated super twisted nematic GMSK Gaussian Minimum Shift Keying GND Ground conductive mass GPIB General purpose interface bus GPRS General Packet Radio Service GSM Group Special Mobile Global System for Mobile communication HSDPA High speed downlink packet access HF Hands free HFCM Handsfree Common HS Handset HSCSD High speed circuit switched data data transmission connection faster than GSM ...

Page 199: ...MTP Multipoint to point connection NFC Near field communication NTC Negative temperature coefficient temperature sensitive resistor used as a temperature sensor OMA Object management architecture OMAP Operations maintenance and administration part Opamp Operational Amplifier PA Power amplifier PCM Pulse Code Modulation PDA Pocket Data Application PDA Personal digital assistant PDRAM Program Data R...

Page 200: ...riber Identity Module SMPS Switched Mode Power Supply SNR Signal to noise ratio SPR Standard Product requirements SRAM Static random access memory STI Serial Trace Interface SW Software SWIM Subscriber Wallet Identification Module TCP IP Transmission control protocol Internet protocol TCXO Temperature controlled Oscillator Tiku Finnish for Chip Successor of the UPP TX Radio Transmitter UART Univer...

Page 201: ...lator VF View Finder Vp p Peak to peak voltage VSIM SIM voltage WAP Wireless application protocol WCDMA Wideband code division multiple access WD Watchdog WLAN Wireless local area network XHTML Extensible hypertext markup language Zocus Current sensor used to monitor the current flow to and from the battery RX 51 Glossary Issue 1 COMPANY CONFIDENTIAL Page Glossary 7 Copyright 2009 Nokia All rights...

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Summary of Contents for N900

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Nokia N900, Service Manual, Page: 165 / 202

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Summary of Contents for N900

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