User Guide

ManualsBrandsNokia ManualsOther3109c

Service Manual

RM-274 (Nokia 3109c)

Mobile Terminal

Part No: 9203402 (Issue 1)

Nokia Customer Care

COMPANY CONFIDENTIAL

Summary of content (140 pages)

PAGE 3
RM-274 Copyright Copyright Copyright © 2007 Nokia. All rights reserved. Reproduction, transfer, distribution or storage of part or all of the contents in this document in any form without the prior written permission of Nokia is prohibited. Nokia, Nokia Connecting People, and Nokia X and Y are trademarks or registered trademarks of Nokia Corporation. Other product and company names mentioned herein may be trademarks or tradenames of their respective owners.
PAGE 4
RM-274 Warnings and cautions Warnings and cautions Warnings • IF THE DEVICE CAN BE INSTALLED IN A VEHICLE, CARE MUST BE TAKEN ON INSTALLATION IN VEHICLES FITTED WITH ELECTRONIC ENGINE MANAGEMENT SYSTEMS AND ANTI-SKID BRAKING SYSTEMS. UNDER CERTAIN FAULT CONDITIONS, EMITTED RF ENERGY CAN AFFECT THEIR OPERATION. IF NECESSARY, CONSULT THE VEHICLE DEALER/ MANUFACTURER TO DETERMINE THE IMMUNITY OF VEHICLE ELECTRONIC SYSTEMS TO RF ENERGY.
PAGE 5
RM-274 For your safety For your safety QUALIFIED SERVICE Only qualified personnel may install or repair phone equipment. ACCESSORIES AND BATTERIES Use only approved accessories and batteries. Do not connect incompatible products. CONNECTING TO OTHER DEVICES When connecting to any other device, read its user’s guide for detailed safety instructions. Do not connect incompatible products. Issue 1 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 6
RM-274 Care and maintenance Care and maintenance This product is of superior design and craftsmanship and should be treated with care. The suggestions below will help you to fulfil any warranty obligations and to enjoy this product for many years. • Keep the phone and all its parts and accessories out of the reach of small children. • Keep the phone dry. Precipitation, humidity and all types of liquids or moisture can contain minerals that will corrode electronic circuits.
PAGE 7
RM-274 ESD protection ESD protection Nokia requires that service points have sufficient ESD protection (against static electricity) when servicing the phone. Any product of which the covers are removed must be handled with ESD protection. The SIM card can be replaced without ESD protection if the product is otherwise ready for use. To replace the covers ESD protection must be applied. All electronic parts of the product are susceptible to ESD. Resistors, too, can be damaged by static electricity discharge.
PAGE 8
RM-274 Battery information Battery information Note: A new battery's full performance is achieved only after two or three complete charge and discharge cycles! The battery can be charged and discharged hundreds of times but it will eventually wear out. When the operating time (talk-time and standby time) is noticeably shorter than normal, it is time to buy a new battery. Use only batteries approved by the phone manufacturer and recharge the battery only with the chargers approved by the manufacturer.
PAGE 9
RM-274 Company Policy Company Policy Our policy is of continuous development; details of all technical modifications will be included with service bulletins. While every endeavour has been made to ensure the accuracy of this document, some errors may exist. If any errors are found by the reader, NOKIA MOBILE PHONES Business Group should be notified in writing/email.
PAGE 11
RM-274 Nokia 3109c Service Manual Structure Nokia 3109c Service Manual Structure 1 General information 2 Service Tools and Service Concepts 3 BB Troubleshooting and Manual Tuning Guide 4 RF Troubleshooting and Manual Tuning Guide 5 System module Glossary Issue 1 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 15
RM-274 General information Table of Contents Product selection....................................................................................................................................................1–5 Display and keypad features .................................................................................................................................1–5 Features................................................................................................................................
PAGE 17
RM-274 General information Product selection The RM-274 is class 4 (max 2W) GSM tri-band hand portable phone, supporting GSM 900/1800/1900 band. The RM-274 also supports EGPRS and GPRS (Packed data). It is a class B&C terminal, supporting EGPRS multislot class 10 (4Rx + 1Tx and 3Rx + 2Tx) and GPRS multislot class 10 (4+1, 3+2). The RM-274 is MMS (Multimedia Messaging Services) version 1.2 enabled phone with 128x160 pixel active matrix display supporting up to 262k colours.
PAGE 18
RM-274 General information • 10MB physical internal user memory • µSD memory card slot (up to 2GB) • Music player • Integrated handsfree speaker • Internal vibra • Bluetooth • 2.0 mm DC charger plug • Mini-USB connector • 2.5mm Nokia AV connector Software features • ISA OS 8.0s Platform • Nokia Series 40 User interface (UI): JavaTM MIDP 2.
PAGE 19
RM-274 General information Applications • Java™ MIDP 2.
PAGE 20
RM-274 General information Mobile enhancements Mobile enhancements for RM-274 Table 1 Power Type Name Note: This phone is charged through the smaller Nokia standard interface (2.0 mm plug). The 3.5 mm standard charger can be used together with the CA-44 charger adapter. AC-3/AC-5 Compact charger AC-4 Travel charger BL-5C Battery 1020 mAh Li-Ion CA-44 Charger adapter (from 3.
PAGE 21
RM-274 General information Type HS-21W, HS-24W, HS-25W, HS-26W, HS-34W, HS-36W, HS-37W, HS-57W, HS-58W Name Wireless stereo headsets Table 4 Data Type Name DKE-2 Mini USB connectivity cable MU-22 1 GB µSD card MU-26 128 MB µSD card MU-27 256 MB µSD card MU-28 512 MB µSD card MU-37 2 GB µSD card Technical specifications General specifications Unit Transceiver with BL-5C 1020 mAh Li-Ion battery pack Dimension (mm) 108,5 x 45,7 x 15,6 Weight (g) Volume (cc) 87 72 Battery endurance Batter
PAGE 22
RM-274 General information Temperature range Min oC Max oC Functional (reduced performance) -30 +70 Storage -30 +85 The HW module complies with the SPR4 Operating Conditions. Humidity Relative humidity range is 5...95%. The hardware 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.
PAGE 25
RM-274 Service Tools and Service Concepts Table of Contents Service tools............................................................................................................................................................2–5 Product specific tools........................................................................................................................................2–5 FS-47 ..............................................................................................................
PAGE 27
RM-274 Service Tools and Service Concepts Service tools Product specific tools The table below gives a short overview of service tools that can be used for testing, error analysis and repair of product RM-274, refer to various concepts. FS-47 Flash adapter For flashing (also dead phones) with SS-64. RF testing and tuning, and EM calibration on ATO level with SS-62 (mechanical locking concept), CU-4 supported.
PAGE 28
RM-274 Service Tools and Service Concepts SA-123 RF coupler SA-123 is an RF coupler for GSM RF testing. It is used together with the product-specific flash adapter. The following table shows attenuations from the antenna pads of the mobile terminal to the SMA connectors of SA-123: • Nokia 3109c (RM-274) Band Channel RX Att. (dB) EGSM 900 Low 3 Mid 4 High 5 4 Low 3 4.4 Mid 3 High 4 3.5 Low 3 4.5 Mid 4 High 4 GSM 1800 GSM 1900 SS-116 Tolerance RX TX Att. (dB) Tolerance TX 4.
PAGE 29
RM-274 Service Tools and Service Concepts CU-4 Control unit CU-4 is a general service tool used with a module jig and/or a flash adapter. It requires an external 12 V power supply. The unit has the following features: • software controlled via USB • EM calibration function • Forwards FBUS/Flashbus traffic to/from terminal • Forwards USB traffic to/from terminal • software controlled BSI values • regulated VBATT voltage • 2 x USB2.
PAGE 30
RM-274 Service Tools and Service Concepts FLS-4S Flash device FLS-4S is a dongle and flash device incorporated into one package, developed specifically for POS use. FLS-5 Flash device FLS-5 is a dongle and flash device incorporated into one package, developed specifically for POS use.
PAGE 31
RM-274 Service Tools and Service Concepts JBT-9 Bluetooth test and interface box (sales package) The JBT-9 test box is a generic service device used to perform Bluetooth bit error rate (BER) testing, and establishing cordless FBUS connection via Bluetooth. An ACP-8x charger is needed for BER testing and an AXS-4 cable in case of cordless interface usage testing .
PAGE 32
RM-274 Service Tools and Service Concepts SPS-1 Soldering Paste Spreader The SPS-1 allows spreading of solder to the LGA components pads over the rework stencils. SRT-6 Opening tool SRT-6 is used to open phone covers. SS-46 Interface adapter SS-46 acts as an interface adapter between the flash adapter and FPS-10.
PAGE 33
RM-274 Service Tools and Service Concepts ST-40 Rework stencil ST-40 is a rework stencil and used with RJ-93. 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-10 when DCT-4 phones are flashed. Cables The table below gives a short overview of service tools that can be used for testing, error analysis and repair of product RM-274, refer to various concepts.
PAGE 34
RM-274 Service Tools and Service Concepts CA-35S Power cable CA-35S is a power cable for connecting, for example, the FPS-10 flash prommer to the Point-Of-Sales (POS) flash adapter. DAU-9S MBUS cable The MBUS cable DAU-9S has a modular connector and is used, for example, between the PC's serial port and module jigs, flash adapters or docking station adapters. Note: Docking station adapters valid for DCT4 products. DKE-2 Mini-USB cable USB to mini-USB connector cable.
PAGE 35
RM-274 Service Tools and Service Concepts XCS-4 Modular cable XCS-4 is a shielded (one specially shielded conductor) modular cable for flashing and service purposes. XRE-2 Bluetooth cable The bluetooth cable connects the bluetooth connector of the module jig to the bluetooth test box JBT-9. 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: • GSM850/900: 0.3+-0.
PAGE 36
RM-274 Service Tools and Service Concepts Service concepts POS (Point of Sale) flash concept Figure 2 POS flash concept Type Description Product specific devices BL-5C Battery Other devices ACP-8 Power adapter FLS-4S or FLS-5 POS flash dongle PC with Phoenix service software Cables DKE-2 Page 2 –14 USB connectivity cable COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 37
RM-274 Service Tools and Service Concepts Flash concept with FPS-10 Figure 3 Basic flash concept with FPS-10 Type Description Product specific devices FS-47 Flash adapter Other devices FPS-10 Flash prommer box PKD-1/PK-1 SW security device SS-46 Interface adapter PC with Phoenix service software Cables XCS-4 Modular cable CA-35S Power cable USB cable Issue 1 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 38
RM-274 Service Tools and Service Concepts CU-4 flash concept with FPS-10 Figure 4 CU-4 flash concept with FPS-10 Type Description Product specific devices FS-47 Flash adapter Other devices CU-4 Control unit FPS-10 Flash prommer box PKD-1/PK-1 SW security device SS-62 Flash adapter base SX-4 Smart card PC with Phoenix service software Cables PCS-1 Power cable XCS-4 Modular cable Standard USB cable USB cable Page 2 –16 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 39
RM-274 Service Tools and Service Concepts Module jig service concept Figure 5 Module jig service concept Type Description Phone specific devices MJ-122 Module jig Other devices CU-4 Control unit FPS-10 Flash prommer box PKD-1/PK-1 SW security device SX-4 Smart card PC with Phoenix service software Measurement equipment Cables PCS-1 DC power cable XCS-4 Modular cable XRS-6 RF cable USB cable Issue 1 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 40
RM-274 Service Tools and Service Concepts Type Description GPIB control cable RF testing concept with RF coupler Figure 6 RF testing concept with RF coupler Type Description Product specific devices FS-47 Flash adapter SA-123 RF coupler Other devices CU-4 Control unit SX-4 Smart card FPS-10 Flash prommer box PKD-1/PK-1 SW security device SS-62 Flash adapter base Measurement equipment PC with Phoenix service software Cables PCS-1 Page 2 –18 Power cable COMPANY CONFIDENTIAL Copyright © 20
PAGE 41
RM-274 Service Tools and Service Concepts Type Description XCS-4 Modular cable XRS-6 RF cable GPIB control cable USB cable Service concept for RF testing and RF/BB tuning Figure 7 Service concept for RF testing and RF/BB tuning Type Description Product specific devices MJ-122 Module jig Other devices CU-4 Control unit PKD-1/PK-1 SW security device SX-4 Smart card Measurement equipment Smart card reader PC with Phoenix service software Issue 1 COMPANY CONFIDENTIAL Copyright © 2007 Nokia.
PAGE 42
RM-274 Service Tools and Service Concepts Type Description Cables DAU-9s MBUS cable PCS-1 DC power cable XRS-6 RF cable GPIB control cable USB cable Page 2 –20 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 45
RM-274 BB Troubleshooting and Manual Tuning Guide Table of Contents Baseband troubleshooting overview ...................................................................................................................3–5 Power and charging troubleshooting..................................................................................................................3–6 General power checking troubleshooting ...................................................................................................
PAGE 46
RM-274 BB Troubleshooting and Manual Tuning Guide Figure 10 Location of the microSD card reader in RM-274.............................................................................. 3–13 Figure 11 SD card initialization from pin J3206 ............................................................................................... 3–14 Figure 12 Single-ended output waveform of the Ext_in_HP_out measurement when earpiece is connected. ..........................................................................
PAGE 47
RM-274 BB Troubleshooting and Manual Tuning Guide Baseband troubleshooting overview This section is intended to be a guide for localising and repairing electrical faults. The table below tells you what troubleshooting to go to.
PAGE 48
RM-274 BB Troubleshooting and Manual Tuning Guide Power and charging troubleshooting General power checking troubleshooting Troubleshooting flow Page 3 –6 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 52
RM-274 BB Troubleshooting and Manual Tuning Guide Interface troubleshooting COMBO memory troubleshooting Troubleshooting flow Page 3 –10 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 54
RM-274 BB Troubleshooting and Manual Tuning Guide Part 2 Figure 8 Flashing pic 1. Take single trig measurement for the rise of the BSI signal. Figure 9 Flashing pic 2. Take single trig measurement for the rise of the BSI signal. MicroSD card troubleshooting Context In the RM-274 the microSD card reader is located under the battery cover. Page 3 –12 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 57
RM-274 BB Troubleshooting and Manual Tuning Guide Take single trig measurement on the rising edge of the DAT signal. Figure 11 SD card initialization from pin J3206 User interface troubleshooting Display module troubleshooting General instructions for display troubleshooting Context The RM-274 has three display modes: • Normal mode: The display is in normal mode when the phone is in active use. • Partial idle mode: The display is in partial idle mode when the power saver is on.
PAGE 58
RM-274 BB Troubleshooting and Manual Tuning Guide Visual defects (pixel) Pixel defects can be checked by controlling the display with Phoenix. Use both colours, black and white, on a full screen. The display may have some random pixel defects that are acceptable for this type of display. The criteria when pixel defects are regarded as a display failure, resulting in a replacement of the display, are presented the following table.
PAGE 60
RM-274 BB Troubleshooting and Manual Tuning Guide Backlight troubleshooting Context The device has one LED driver that provides current for both the display and keyboard backlights. Brightness can be adjusted manually, and it affects both the display and keypad. Keyboard backlights can be turned ON/ OFF separately but not without switching on the display lights. Display and keyboard backlight troubleshooting Page 3 –18 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 63
RM-274 BB Troubleshooting and Manual Tuning Guide Audio troubleshooting Introduction to acoustics troubleshooting Note: Always make sure all openings are clean and all contact pads are intact and make contact. If audio still does not work, please continue to the electronic audio troubleshooting (2nd diagram where applicable). Acoustics design ensures that the sound is detected correctly with a microphone and properly radiated to the outside of the device by speaker(s).
PAGE 64
RM-274 BB Troubleshooting and Manual Tuning Guide The gain values presented in the table apply for a differential output vs. single-ended/differential input. Loop test External Mic to External Earpiece Input terminal XMICP and GND Output terminal HSEAR R and GND Path gain [dB] (fixed) Input voltage [mVp-p] Differe Outp ntial ut DC output level voltage [V] [mVpp] Output current [mA] -2.9 1000 720 1.2 NA -4.0 750 490 1.2 NA 8.5 920 2520 0 25mA (calc.) 22.7 100 1360 1.
PAGE 65
RM-274 BB Troubleshooting and Manual Tuning Guide Figure 13 Differential output waveform of the Ext_in_IHF_out out loop measurement when speaker is connected. Figure 14 Single-ended output waveform of the HP_in_Ext_out loop when microphone is connected. Issue 1 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 74
RM-274 BB Troubleshooting and Manual Tuning Guide Connections troubleshooting Bluetooth troubleshooting Introduction to Bluetooth troubleshooting There are two main Bluetooth (BT) problems that can occur: Problem Description Detachment of the BT antenna. This would most likely happen if the device has been dropped repeatedly to the ground. It could cause the BT antenna to become loose or partially detached from the PWB. A malfunction in the BT ASIC, BB ASICs or the phone’s BT SMD components.
PAGE 75
RM-274 BB Troubleshooting and Manual Tuning Guide Figure 15 BER test result Bluetooth self tests in Phoenix Steps 1. Start Phoenix service software. 2. ChooseFile→Scan Product. 3. Place the phone to a flash adapter. 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 related tests: • ST_LPRF_IF_TEST • ST_LPRF_AUDIO_LINES_TEST • ST_BT_WAKEUP_TEST Issue 1 COMPANY CONFIDENTIAL Copyright © 2007 Nokia.
PAGE 76
RM-274 BB Troubleshooting and Manual Tuning Guide 7. To run the tests, click Start. Figure 16 Bluetooth self tests in Phoenix Bluetooth BER failure troubleshooting Context Basic encoding rules, BER, is a self-identifying and self-delimiting encoding scheme, which means that each data value can be identified, extracted and decoded individually. Page 3 –34 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 79
RM-274 BB Troubleshooting and Manual Tuning Guide Bluetooth audio and UI activation troubleshooting Troubleshooting flow Issue 1 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 81
RM-274 BB Troubleshooting and Manual Tuning Guide Baseband manual tuning guide Certificate restoring for BB5 products Context This procedure is performed when the device certificate is corrupted for some reason. All tunings (RF & Baseband, UI) must be done after performing the certificate restoring procedure. The procedure for certificate restoring is the following: • Flash the phone with the latest available software using FPS-8 or FPS-10. • Create a request file. • Send the file to Nokia by e-mail.
PAGE 82
RM-274 BB Troubleshooting and Manual Tuning Guide iii Choose the product manually from File→Open Product , and click OK. Wait for the phone type designator (e.g. “RM-1” ) to be displayed in the status bar. iv Go to Flashing→SW Update and wait until Phoenix reads the product data as shown in the following picture.
PAGE 83
RM-274 BB Troubleshooting and Manual Tuning Guide Programming is completed when Flashing Completed message is displayed. The product type designator and MCU SW version are displayed in the status bar. vi Close the SW Update window and then choose File→Close Product . 2. Create a Request file. For this procedure, you must supply +12 V to CU-4 from an external power supply. i To connect the phone with Phoenix, choose File→Scan Product . ii Choose Tools→Certificate Restore .
PAGE 84
RM-274 BB Troubleshooting and Manual Tuning Guide iv Name the file so that you can easily identify it, and click Open. The name of the file and its location are shown. v To create the Request file, click Start. vi When the file for certificate restore has been created, send it to Nokia as an e-mail attachment. 3. Restore certificate. For this procedure, you must supply +12 V to CU-4 from an external power supply. i Save the reply file sent by Nokia to your computer. ii Start Phoenix service software.
PAGE 85
RM-274 BB Troubleshooting and Manual Tuning Guide iv From the Tools menu, choose Certificate Restore and select Process a response file in the Action pane. v To choose the location where response file is saved, click Browse. vi Click Open. The name of the file and the path where it is located are shown. vii To write the file to phone, click Start. Next actions After a successful rewrite, you must retune the phone completely by using Phoenix tuning functions.
PAGE 86
RM-274 BB Troubleshooting and Manual Tuning Guide Energy management calibration Prerequisites Energy Management (EM) calibration is performed to calibrate the setting (gain and offset) of AD converters in several channels (that is, battery voltage, BSI, battery current) to get an accurate AD conversion result. Hardware setup: • An external power supply is needed. • Supply 12V DC from an external power supply to CU-4 to power up the phone.
PAGE 89
RM-274 RF Troubleshooting and Manual Tuning Guide Table of Contents Introduction to RF troubleshooting .....................................................................................................................4–5 RF key components ................................................................................................................................................4–6 Receiver troubleshooting ................................................................................................
PAGE 91
RM-274 RF Troubleshooting and Manual Tuning Guide Introduction to RF troubleshooting On the following pages you will find a step-by-step troubleshooting procedure and reference measurements at the relevant signal points. For functional descriptions, please refer to the System module section.
PAGE 92
RM-274 RF Troubleshooting and Manual Tuning Guide RF key components Figure 17 RF key components, bottom side main board Receiver troubleshooting Introduction to RX troubleshooting Rx can be tested by making a phone call or in the local mode. For the local mode testing, use Phoenix service software. The main Rx troubleshooting measurement is RSSI measurement. This test measures the signal strength of the received signal. I and Q branches can be measured separately.
PAGE 93
RM-274 RF Troubleshooting and Manual Tuning Guide In GSM, the input signal can be either a real GSM signal or a CW signal that is 67.771kHz up from the carrier frequency. For service tool usage instructions, refer to section Service Tools and Service Concepts. General instructions for RX troubleshooting Steps 1. Connect a test jig to a computer with a DAU-9S cable or to a FPS-10 flash prommer with a modular cable (XCS-4). Make sure that you have a PKD-1 dongle connected to the computer's parallel port. 2.
PAGE 94
RM-274 RF Troubleshooting and Manual Tuning Guide Band Channel (RX and TX) Input frequency (MHz) Offset (kHz) Power level (dBm) GSM900 37 942.46771 67.710 -90 GSM1800 700 1842.86771 67.710 -90 GSM1900 661 1960.06771 67.710 -90 Figure 18 RF Controls window Receiver (RX) troubleshooting Receiver troubleshooting Apply a signal according to the table in General instructions for RX troubleshooting (page ) Page 4 –8 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 97
RM-274 RF Troubleshooting and Manual Tuning Guide GSM Rx chain activation for manual measurements / GSM RSSI measurement Context RSSI signal measurement is the main Rx troubleshooting measurement. The test measures the strength of the received signal. I and Q branches can be measured separately. In GSM, the input signal can be either a real GSM signal or a CW (Continuous Wave) signal that is 67.771 kHz above the carrier frequency. Steps 1. Start Phoenix service software. 2.
PAGE 98
RM-274 RF Troubleshooting and Manual Tuning Guide • Tx IQ tuning and Tx power tuning can be also used in some cases. • Remember that retuning is not a fix! Phones are tuned correctly in production. The first set of steps instructs how to assemble the test setup. This setup is general for all Tx troubleshooting tasks. Alternative steps provide specific troubleshooting instructions for Phoenix service software. Caution: Never activate the GSM transmitter without a proper antenna load.
PAGE 99
RM-274 RF Troubleshooting and Manual Tuning Guide • Set Operation mode to “Burst” (Default). • Set Tx data type to “All1” (Default). • Set Rx/Tx channel (see table below) • Set Edge to “Off” (Default). • Set Tx PA mode to “High” (Default). • Set power level (see table below) Band Channel (RX and TX) TX power level GSM900 37 5 GSM1800 700 0 GSM1900 661 0 Figure 20 RF Controls window Issue 1 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 101
RM-274 RF Troubleshooting and Manual Tuning Guide Checking antenna functionality GSM antenna In the GSM antenna, there is one feed and two GND contacts. Between GND1 and Feed, a DC short-circuit can be measured. GND2 has no DC connection to the other contacts. The antenna is functioning normally, if the contact pads hit the antenna C-clips on the PWB and the antenna is visually intact. BT antenna The BT antenna is (as the GSM antenna) placed on the flex foil on the antenna module.
PAGE 102
RM-274 RF Troubleshooting and Manual Tuning Guide Figure 22 GSM and BT antenna contact pads on the antenna module Antenna C-clips When checking the antenna functionality, you can also check that the antenna C-clips are intact (that is, there are no cracks/bends in them). Figure 23 Antenna C-clips on the PWB Page 4 –16 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 104
RM-274 RF Troubleshooting and Manual Tuning Guide RF tunings Introduction to RF tunings Important: Only perform RF tunings if: • one or more of the RF components have been replaced • flash memory chip is replaced or corrupted. RF calibration is always performed with the help of a product-specific module jig (MJ-122), never with an RF coupler. Using an RF coupler in the calibration phase will cause a complete mistuning of the RF part. Important: After RF component replacements, always use autotuning.
PAGE 105
RM-274 RF Troubleshooting and Manual Tuning Guide Phoenix preparations Install the phone specific data package, for example RM-274_DP20_4.351__sw-sk4.35[1].exe. This defines phone specific settings.. Auto tuning procedure 1 Make sure the phone (in the jig) is connected to the equipment. Else, some menus will not be shown in Phoenix. 2 To go to autotune, select Tuning (Alt-U) > Auto-Tune (Alt-A) from the menu. 3 Start autotuning, clicking the Tune button.
PAGE 106
RM-274 RF Troubleshooting and Manual Tuning Guide PA (power amplifier) detection Context The PA detection procedure detects which PA manufacturer is used for phone PAs. If a PA is changed or if the permanent memory (PMM) data is corrupted, PA detection has to be performed before Tx tunings. Steps 1. From the Operating mode drop-down menu, set mode to Local. 2. Choose Tuning→PA Detection . 3. Click Tune. 4. Check that the detected PA manufacturers are corresponding to the actual chips on the board. 5.
PAGE 107
RM-274 RF Troubleshooting and Manual Tuning Guide 5. Click Start. 6. Connect the signal generator to the phone, and set frequency and amplitude as instructed in the Rx Calibration with band EGSM900 (step 1-3) pop-up window. Important: The calibration uses a non-modulated CW signal. Increase the signal generator level by cable attenuation and module jig probe attenuation. Issue 1 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 108
RM-274 RF Troubleshooting and Manual Tuning Guide 7. To perform the tuning, click OK. 8. Check that the tuning values are within the limits specified in the following table: Table 10 RF tuning limits in Rx calibration Min Typ Max Unit GSM900 AFC Value (init) -200 -105..62 200 - AFC slope 0 122 200 - RSSI (AGC-0) 106 107...110 114 dB 105 105...109 114 dB 105 105...109 114 dB GSM1800 RSSI (AGC-0) GSM1900 RSSI (AGC-0) Page 4 –22 COMPANY CONFIDENTIAL Copyright © 2007 Nokia.
PAGE 109
RM-274 RF Troubleshooting and Manual Tuning Guide 9. Click Next to continue with GSM1800 Rx tuning. Next actions Repeat steps 6 to 9 for GSM1800 and GSM1900 Rx band filter response compensation (GSM) Prerequisites Rx calibration must be performed before the Rx band filter response compensation. Context On each GSM Rx band, there is a band filter in front of the RF ASIC front end. The amplitude ripple caused by these filters causes ripple to the RSSI measurement, and therefore calibration is needed.
PAGE 110
RM-274 RF Troubleshooting and Manual Tuning Guide 4. Select GSM900 band. 5. Choose Tuning→GSM→Rx Band Filter Response Compensation . 6. Select Tuning mode: manual 7. Click Start. 8. Connect the signal generator to the phone, and set frequency and amplitude as instructed in the Rx Band Filter Response Compensation for EGSM900 pop-up window, step 1-3. Page 4 –24 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 111
RM-274 RF Troubleshooting and Manual Tuning Guide 9. To perform tuning, click OK. 10. Go through all 9 frequencies. The following table will be shown: 11. Check that the tuning values are within the limits specified in the following table: Min Typ Max Unit Ch. 965 / 923.26771 MHz -6 -1 2 dB Ch. 975 / 925.26771 MHz -3 0 2 dB Ch. 987 / 927.66771 MHz -3 0 2 dB Ch. 1009 / 932.06771 MHz -2 0 2 dB Ch. 37 / 942.46771 MHz -2 0 2 dB Ch. 90 / 953.06771 MHz -2 0 2 dB Ch. 114 / 957.
PAGE 112
RM-274 RF Troubleshooting and Manual Tuning Guide Min Typ Max Unit Ch. 700 / 1842.86771 MHz -3 0 3 dB Ch. 791 / 1861.06771 MHz -3 0 3 dB Ch. 870 / 1876.86771 MHz -3 0 3 dB Ch. 885 / 1879.86771 MHz -3 0 3 dB Ch. 908 / 1884.46771 MHz -6 -1 3 dB Ch. 496 / 1927.06771 MHz -6 -1 2 dB Ch. 512 / 1930.26771 MHz -3 0 2 dB Ch. 537 / 1935.26771 MHz -3 0 2 dB Ch. 586 / 1945.06771 MHz -3 0 2 dB Ch. 661 / 1960.06771 MHz -3 0 2 dB Ch. 736 / 1975.
PAGE 113
RM-274 RF Troubleshooting and Manual Tuning Guide 4. Select Mode: Automatic. 5. Select band GSM900 and click Start. 6. Click Next to start GSM1800 band TX IQ tuning. 7. Click Next to start GSM1900 band TX IQ tuning. 8. ClickFinish and then Close. Next actions Tuning sliders should be close to the center of the scale after the tuning and within the limits specified in the following table. If they are not within the limits, check Tx IQ quality manually.
PAGE 114
RM-274 RF Troubleshooting and Manual Tuning Guide Tx power level tuning (GSM) Context Because of variations at the IC (Integrated Circuit) process and discrete component values, the actual transmitter RF gain of each phone is different. Tx power level tuning is used to find out mapping factors called 'power coefficients’. These adjust the GSM transmitter output power to fulfill the specifications. For EDGE transmission, the bias settings of the GSM PA are adjusted in order to improve linearity.
PAGE 115
RM-274 RF Troubleshooting and Manual Tuning Guide 5. Click Start.l 6. Set the spectrum analyzer for power level tuning: Frequency Channel frequency: • 897.4MHz GSM900 • 1747.8MHz GSM1800 • 1880MHz GSM1900 Span 0 Hz Sweep time 2ms Trigger Video triggering (-10dBm) Resolution BW 3MHz Issue 1 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 116
RM-274 RF Troubleshooting and Manual Tuning Guide Video BW 3MHz Reference level offset sum cable attenuation with module jig attenuation Reference level 33dBm A power meter with a peak power detector can be also used. Remember to take the attenuations into account. 7. Adjust power for all bold power levels to correspond the Target dBm column by pressing + or – keys. 8. If all bold power levels are adjusted, click Next to continue with GSM900 EDGE. 9.
PAGE 119
RM-274 System module Table of Contents Phone description ..................................................................................................................................................5–5 Engine......................................................................................................................................................................5–8 Engine modules .................................................................................................................
PAGE 121
RM-274 System module Phone description Introduction This chapter describes the system module including engine, power management, interfaces, audio etc. The baseband is based on BB5.0 with a RAPGSM main processor and Retu/Tahvo energy management. All blocks that require high voltage process are in Tahvo and all other in Retu. The RF part is based on the ASIC Ahne. RM-274 is a monoblock phone, in which all electrical components are assembled into one PWB. RM-274 operates on the GSM 900/1800/1900 bands.
PAGE 124
RM-274 System module Board and module connections Figure 27 Board and module connections Engine Engine modules The engine contains • RF module with Ahne ASIC • Main processor with integrated memory (Baseband) • Energy management - Retu and Tahvo (Baseband) Page 5 –8 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 125
RM-274 System module • SDRAM and NOR flash memories RF engine The RF module performs the high frequency operations of the engine for GSM. In both transmitter and receiver, the modulator and demodulator operate at the channel frequency.
PAGE 126
RM-274 System module • Audio block • SIM • FM radio Modes of operation The functional behavior can be divided into seven different states. Each of these states will affect the general functionality of the phone: • No supply • Backup • Power off • Reset • Power on • Deep sleep Battery and charging Battery • Type: BL-5C, Li-Ion • Capacity: 1020mAh • BSI resistor nominal value: 75 kΩ Battery temperature is measured on the NTC on the main board.
PAGE 127
RM-274 System module Figure 28 Old (left) and new (right) charger plugs Charging is controlled by energy management, and external components are needed to protect the baseband module against EMC, reverse polarity and transient frequency deviation. Interfaces SIM The SIM interface is the electrical interface between the SIM card and the mobile phone engine. The data communication between the SIM card and the phone is asynchronous half duplex.
PAGE 128
RM-274 System module µSD card interface The µSD card is connected to the engine by an external level shifter and ESD protection filter. Supplied voltages: • VMMC: 2.85 V (from level shifter) • VIO: 1.8 V (from Retu) The card removal is detected by a push detect switch. User interface Display The display unit comprises a parallel interface. Keyboard All keys are placed on the main PWB.
PAGE 129
RM-274 System module • 1 dynamic speaker • 1 microphone module Retu also provides an output for the vibra motor. All external audio accessories are connected to the specific audio connector. Figure 30 Audio block diagram Internal audio The internal audio components are used in these modes: Hand portable (HP) mode Microphone X Earpiece X Speaker Internal hands free (IHF) mode X X Connections IrDA IrDA is a fully digital peer-to-peer data link between IrDA units.
PAGE 130
RM-274 System module Datarate: 1.152 Mbit Max. operating distance: 1 m Figure 31 IR module pin ordering AV connector Headsets and other galvanic accessories are connected to the specific audio input. The accessory mode is automatically enabled/disabled when a dedicated accessory is connected/disconnected.
PAGE 131
RM-274 System module Figure 32 Bluetooth interface block diagram Main RF characteristics Table 11 Channel numbers and frequencies System GSM900 Channel number TX frequency RX frequency Unit 0 < =n <= 124 F = 890 + 0.2*n F = 935 + 0.2*n MHz 975 <= n <= 1023 F = 890 + 0.2* (n 1024) F = 935 + 0.2*(n -1024) MHz GSM1800 512 <= n <= 885 F = 1710.2 + 0.2* (n 512) F = 1805.2 + 0.2* (n-512) MHz GSM1900 512 <= n <= 810 F = 1850.2 + 0.2* (n 512) F = 1930.2 + 0.
PAGE 132
RM-274 System module Parameter Unit and value Number of RF channels EGSM900: 174 GSM1800: 374 GSM1900: 300 Output Power EGSM900: GSMK 5...32.5 dBm EGSM900: 8-PSK 5...26.5 dBm GSM1800: GSMK 0...30.5 dBm GSM1800: 8-PSK 0...25.5 dBm GSM1900: GSMK 0...30.5 dBm GSM1900: 8-PSK 0...25.
PAGE 133
RM-274 System module Item Values Sensitivity min. - 102 dBm (normal condition) Total typical receiver voltage gain (from antenna to RX ADC) 86 dB Receiver output level (RF level -95 dBm) 40 mVpp, single-ended I/Q signals to RX ADCs Issue 1 COMPANY CONFIDENTIAL Copyright © 2007 Nokia. All rights reserved.
PAGE 137
RM-274 Glossary A/D-converter Analog-to-digital converter ACI Accessory Control Interface ADC Analog-to-digital converter ADSP Application DPS (expected to run high level tasks) AGC Automatic gain control (maintains volume) ALS Ambient light sensor AMSL After Market Service Leader ARM Advanced RISC Machines ARPU Average revenue per user (per month or per year) ASIC Application Specific Integrated Circuit ASIP Application Specific Interface Protector B2B Board to board, connector betwe
PAGE 138
RM-274 Glossary DPLL Digital Phase Locked Loop DSP Digital Signal Processor DtoS Differential to Single ended EDGE Enhanced data rates for global/GSM evaluation EGSM Extended GSM EM Energy management EMC Electromagnetic compability EMI Electromagnetic interference ESD Electrostatic discharge FCI Functional cover interface FPS Flash Programming Tool FR Full rate FSTN Film compensated super twisted nematic GMSK Gaussian Minimum Shift Keying GND Ground, conductive mass GPIB Gener
PAGE 139
RM-274 Glossary LED Light-emitting diode LPRF Low Power Radio Frequency MCU Micro Controller Unit (microprocessor) MCU Multiport control unit MIC, mic Microphone MIDP Mobile Information Device Profile MIN Mobile identification number MIPS Million instructions per second MMC Multimedia card MMS Multimedia messaging service NTC Negative temperature coefficient, temperature sensitive resistor used as a temperature sensor OMA Object management architechture OMAP Operations, maintenance,
PAGE 140
RM-274 Glossary RX Radio Receiver SARAM Single Access RAM SAW filter Surface Acoustic Wave filter SDRAM Synchronous Dynamic Random Access Memory SID Security ID SIM Subscriber Identity Module SMPS Switched Mode Power Supply SNR Signal-to-noice ratio SPR Standard Product requirements SRAM Static random access memory STI Serial Trace Interface SW Software SWIM Subscriber/Wallet Identification Module TCXO Temperature controlled Oscillator Tiku Finnish for Chip, Successor of the UPP