Nokia Customer Care RM-8/RM-47/RM-48 Series Transceivers 6 - Troubleshooting Instructions Issue 2 03/2005 Copyright 2005 Nokia Corporation. All rights reserved.
RM-8/RM-47/RM-48 Company confidential 6 - Troubleshooting Instructions Nokia Customer Care [This page left intentionally blank] Page 2 Copyright 2005 Nokia Corporation. All rights reserved.
RM-8/RM-47/RM-48 Nokia Customer Care Table of Contents Page No Introduction ........................................................................................................ 1 General Failures ................................................................................................. 2 Phone is dead .................................................................................................... 2 Flash programming doesn’t work ...............................................................
RM-8/RM-47/RM-48 Nokia Customer Care RF test points ................................................................................................... 39 Receiver ........................................................................................................... 40 Transmitter ....................................................................................................... 41 Synthesizer ......................................................................................................
RM-8/RM-47/RM-48 Nokia Customer Care Phoenix Tuning ................................................................................................ 84 General instructions for tuning: ...................................................................... 84 RF Tuning after Repairs ................................................................................... 84 Semi-automatic Calibrations & Measurements - step by step: RX/TX and GSM-Bands 84 RX Calibration.............................................
RM-8/RM-47/RM-48 Nokia Customer Care Introduction This document describes in overview the different hardware error possibilities for the RM-8, RM-47 and RM-48 phone. Not every possible hardware error is described in this document, but only those possible to correct. Issue 2 03/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
Issue 2 03/2005 Nokia Customer Care General Failures ■ Phone is dead This means that the phone doesn’t use any current at all when supply is connected and/or power key is pressed. It is assumed that the voltage supplied is 3,9Vdc. UEMEK will prevent any functionality at battery/supply levels below 2,9Vdc and the software will shut the phone down at 3,1Vdc. 7 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-8/RM-47/RM-48 Nokia Customer Care Figure 1: Phone is dead Phone is dead Yes Measure voltage on L2350, L2351, L2352, L2353, L2354, L2355 and L2200. Should be ~3,9V No Failure in VBATT line: Check X2000, L2350, L2351, L2352, L2353, L2354, L2355, L2200, C2350, C2351, C2352 and PWB Yes Measure voltages on both sides of R2407 when power key is pressed.
Issue 2 03/2005 Nokia Customer Care In flash programming error cases the flash prommer (via Phoenix or Darium) can give some information about the fault. The fault information messages could be: • Phone doesn't set Flashbus TXD line high after VCC is switch on. • External RAM test failed. These errors are some of the most common errors and based on this, a fault finding diagram for flash programming is shown below.
RM-8/RM-47/RM-48 Nokia Customer Care Table 1: Most common error messages Error Description Used signals/components VBAT, VCORE, VIO, VFLASH1 C101 The Phone does not set Flashbus TXD line high after the startup. BSI and FBUSRX from Prommer to UEMEK FBUSTX from TIKU->UEMEK->Prommer (stuck at ‘0’) SLEEPX from UEMEK to TIKU C102 C103 C107 A204 A387 C583 C683 C584 C684 C585 C685 C586 C686 The Phone does not set Flashbus TXD line low after the line has been high.
Issue 2 03/2005 Nokia Customer Care ■ Charging Failure Charging fails and no current drawn from ‘charger’ Yes Measure Vchar voltage on V2000. Is it > 3.0V? No Check: X2003, F2000, L2000, V2000, C2005, C2006 and PWB Yes No Recalibrate charger circuitry and retest. Did it work? D2200 (UEMEK) is faulty Yes END Display information when charger connected: “Not charging” Yes Recalibrate charger circuitry and retest.
RM-8/RM-47/RM-48 Nokia Customer Care ■ Phone doesn’t stay on, or phone is jammed If this kind of a failure is presenting itself immediately after FLALI, it is most likely caused by ASICs missing contact with PWB. If the MCU doesn’t service the watchdog register within the UEMEK, the operations watchdog will run out after approximately 32 seconds. It is not possible to measure this service routine.
Issue 2 03/2005 Nokia Customer Care ■ Display Information: “Contact Service” When this error appears in the display it means that one or more of the internal baseband tests has failed. The baseband tests (self tests) are performed each time the phone is powered on. The self tests are divided into those performed while powering up (Start up tests) and the ones that can be executed with a PC using Phoenix (Runtime tests).
RM-8/RM-47/RM-48 Nokia Customer Care Figure 4:Display Information: “Contact Service” Issue 2 03/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
Issue 2 03/2005 Nokia Customer Care Function Failures ■ Camera Failure Start Does the viewfinder start? No Check engine PWB in module jig. Does camera work? Yes Failure in Upper block OR Hinge Flex Check Upper block in module jig. Does camera work? No No Failure in Lower block Failure in Upper block Yes Failure in Hinge Flex. Change and retest. Yes End Check X2400. OK? No Check Camera positioning in socket X3603.
RM-8/RM-47/RM-48 Nokia Customer Care ■ Camera viewfinder failure Viewfinder working but no picture taken when pressing select-key Select key functional ? No Check keyboard with Phoenix Z2401 and domesheet OK ? No Replace Z2401 and/or domesheet Yes Yes PWB failure R3304 = 6,5 MHz clock when pressing select? No Check for short circuit of R3304 No Short circuit? Camera failure Yes Yes Replace component Reflash phone Issue 2 03/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia.
Issue 2 03/2005 Nokia Customer Care ■ FM-radio Failure The FM-radio troubleshooting guide is in the RF section. 17 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-8/RM-47/RM-48 Nokia Customer Care ■ Infrared Communication Failure IrDA failure Yes Measure VBAT at C2600 = 3,7- 4,2 V? No Defect PWB Yes Measure VFLASH1 at C2602 = 2,78 V? No Replace D2200 Yes Measure VIO at C2603 = 1,80 V? No Replace D2200 Yes Measure activity TXD on N2600 pin3? No Replace D2800 Yes Replace N2600 Issue 2 03/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
Issue 2 03/2005 Nokia Customer Care ■ SIM Failure The hardware of the SIM interface from the UEMEK (D2200) to the SIM connector (X2700) can be tested without a SIM card. When the power is switched on, the phone first checks for a 1,8V SIM card and then a 3V SIM card. The phone will try this four times, whereafter it will display "Insert SIM card". The error ”SIM card rejected” means that the ATR message received from the SIM card is corrupted, e.g. data signal levels are wrong.
RM-8/RM-47/RM-48 Nokia Customer Care ■ Display Failure Start Do both displays start ? No Both displays fail? Check Hinge flex, X2400, X3602. OK ? Go to “Main display failure” Mini display fails Go to “Mini display failure” No Yes Yes Main display fails No Change defect components. OK ? No No Check Hinge flex, X2400, X3602 and lines. OK ? No No Check Hinge flex, X2400, X3602 and lines. OK ? No Change upper block.
Issue 2 03/2005 Nokia Customer Care Main display failure Start Main display fails ? No Yes Check hinge flex, X2400, X3600 and X3602. OK ? No Change defect components. OK ? Yes Measure VFlash1 VDD (~2,8V) from C3607, Vcore_lin (1,8V) VDDI (~1,8V) from C3608. OK ? No Change UEMEK (D2200) Yes END 21 Change display module COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-8/RM-47/RM-48 Nokia Customer Care Mini display failure Start Mini display fails ? No Yes Check hinge flex, X2400, X3601 and X3602. OK ? No Change defect components. OK ? Yes Measure VFlash1 VDD ((~2,8V) from C3606, Vcore_lin (1,8V) VDDI (~1,8V) from C3605. OK ? No Change UEMEK (D2200) Yes END Issue 2 03/2005 Change display module COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
Issue 2 03/2005 Nokia Customer Care Main display illumination fault Start Are the Main display backlights OK ? No Check N2400, V2404, R2403, C2411- C2413, L2400, X2400, X3602 (Hinge flex) and X3600. OK ? No Change defect components. Retest. Yes Yes Measure VLED+ (~14V) from V2404. OK ? No Change UEMEK (D2200) Yes END 23 Change display module COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-8/RM-47/RM-48 Nokia Customer Care Mini display illumination fault Start Are the Mini display backlights OK ? No Check D2400, R2400, C2402, C2403, X2400, X3602 (Hinge flex) and X3601. OK ? No Change defect components. Retest. Yes Yes Check LED’s V3600, V3601, V3602 and lines. OK ? No Change defect components. Retest. Yes Change UEMEK (D2200). END Issue 2 03/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
Issue 2 03/2005 Nokia Customer Care ■ USB Data Transmission Failure 25 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-8/RM-47/RM-48 Nokia Customer Care ■ Audio Failure Uplink or downlink failure Start Downlink = incoming audio to e.g. earpiece Uplink = outgoing audio from e.g.
Issue 2 03/2005 Nokia Customer Care Uplink missing audio signal Start Is mute deactivated? No Deactivate mute in menu Yes Is problem present both with hand portable and accessory? Yes No Is problem solved when using accessory? No Accessory is defective Yes Yes Measure mic bias. Is it ~2.
RM-8/RM-47/RM-48 Nokia Customer Care Uplink weak audio signal Start Is microphone opening clean? No Clean opening Yes Measure bias. Is it ~2.1V? Are any of the bias components defective? (Check R2113, C2107, C2108 and R2104) No No Replace UEMEK Yes Yes Replace defective parts. Is bias ~2.1V? No Yes Are microphone contacts and PWB pads OK? No Clean contacts and pads.
Issue 2 03/2005 Nokia Customer Care Uplink distorted audio signal Start Is there distortion when using accessory? Yes Defect accessory No Measure bias. Is it ~2.1V? No No Are any of the bias components defective? (Check R2113, C2107, C2108 and R2104) Replace UEMEK Yes Yes Replace defective parts. Is bias ~2.1V? No Yes Are microphone contacts and PWB pads OK? Clean contacts and pads.
RM-8/RM-47/RM-48 Nokia Customer Care Uplink TDMA noise Start Is there TDMA noise both in hand portable and when using accessory? No Yes Is there noise only in hand portable mode? No Defective accessory Yes Replace the microphone. Is there still noise? No Defective microphone Yes Check for loose, missing or damaged shielding cans. Check C2101, C2107 - C2109 for handportable and C2110 - C2112 for accessory Issue 2 03/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
Issue 2 03/2005 Nokia Customer Care Downlink missing audio signal Start Is problem present both in hand portable mode and when using FM radio? FM radio Is external antenna (headset) working? No Yes Both Is problem present both in speakers and with accessory? Yes Accessory is not detected or it is defective FM module is defective No Is problem related to earpiece, IHF or accessory? IHF Accessory Earpiece IHF is defective. Check IHF speaker and connections.
RM-8/RM-47/RM-48 Nokia Customer Care Downlink weak audio signal Start Yes Is IHF opening clogged? Is problem present both in earpiece and IHF? Yes IHF is defective. Check IHF speaker and connections. Check L2105, L2104, C2114, C2116, C2118 - C2121, N2100, R2115 – R2117, R2119, R2120. Check UEMEK. No No IHF Is problem related to earpiece or IHF? Earpiece Clean IHF opening Yes Is earpiece opening clogged? Clean earpiece opening No Earpiece is defective. Check earpiece speaker and connections.
Issue 2 03/2005 Nokia Customer Care Downlink distorted audio signal Start Is problem present both in earpiece and IHF? Yes No Is problem related to earpiece or IHF? IHF Earpiece IHF is defective. Check IHF speaker and connections. Check L2105, L2104, C2114, C2116, C2118 - C2121, N2100, R2115 – R2117, R2119, R2120. Check UEMEK. Earpiece is defective. Check earpiece speaker and connections. Check R2137 and R2138.
RM-8/RM-47/RM-48 Nokia Customer Care Downlink noise in audio signal Start Mechanical Is the noise electrical or mechanical? Is the noise associated with earpiece/IHF (hand portable mode) or FM radio? Earpiece/IHF Does the error occur both in earpiece and IHF? Software error.
Issue 2 03/2005 Nokia Customer Care Downlink TDMA noise Start Is there TDMA noise both in hand portable and when using accessory? No Yes 35 No Defective accessory Yes Yes Replace battery. Is there still noise? Is there noise only in hand portable mode? No Defective battery Check for loose, missing or damaged shielding cans. Mistuned antenna. Missing/bad component. Check that the problem is not related to uplink TDMA noise COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-8/RM-47/RM-48 Nokia Customer Care Various noise problems Start Sound level too loud Yes Software error No Click noise Yes Software error No Picture/sound synchronization Issue 2 03/2005 Yes Bad TIKU COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
Issue 2 03/2005 Nokia Customer Care Vibra errors Start Is there any vibration? No Wrong setting or software error. Contact problem. Mechanical problem - counterweight is blocked. Defective or missing vibra. Defective UEMEK. Yes Is there any sufficient vibration? No Software error. Contact problem. Defective vibra. Defective UEMEK. Yes Software error. Defective UEMEK. Short circuit. Yes Vibra is constantly switched on? No Intermittent vibration? Yes Bad connection. Defective vibra.
RM-8/RM-47/RM-48 Nokia Customer Care ■ BackLight Failure Start Are the main display LED’s working? No Go to “Main display illumination fault” Yes Are the mini display LED’s working? No Go to “Mini display illumination fault” Yes Are the keyboard LED’s working? No Check D2401, C2400, C2401, R2401, V2416 and measure every LED (~3,2V). OK? No Change defect component. If it still fails change UEMEK (D2200). Yes Yes END Issue 2 03/2005 Retest COMPANY CONFIDENTIAL Copyright © 2005 Nokia.
Issue 2 03/2005 Nokia Customer Care ■ Key Failure Power Key Failure Keypad fault Powerkey OK ? No Measure voltage from S2401. Is it high? No Check R2407, C2415, R2445, S2401 and line. If OK, UEMEK failure Yes Measure voltage from S2401 when pressed. Is it high? No Phone is jammed Yes Check S2401. Is it OK ? Yes Phone is dead No Change S2401 39 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-8/RM-47/RM-48 Nokia Customer Care Volume key failure Volume Up – key working? No Measure Row4 line from S2405. Is it ~1,8V ? No Check S2405 and Row4 line. If OK, change Z2400. If it still fails, change TIKU Edge Yes Measure Col1 from S2405 when pressed. Is there a 50 u pulse ? No Check S2405 and Col1 line. If OK, change Z2400. If it still fails, change TIKU Edge Yes Change TIKU Edge Volume Down –key working? No Measure Row4 line from S2406. Is it ~1,8V ? No Check S2406 and Row4 line.
Issue 2 03/2005 Nokia Customer Care Keypad failure No Keys working? Check Z2400 and Z2401 (soldering). OK? No Change Z2400 and/or Z2401 Yes Yes Measure Row0-Row4 UP, DOWN and SELECT lines from Z2400 and Z2401. Are voltage levels ~1,8V? No Yes Measure SleepX signal (J2801), when key is pressed. Is voltage level ~1,8V? No Change Z2400 and/or Z2401.
RM-8/RM-47/RM-48 Nokia Customer Care RF Troubleshooting Measurements should be done using spectrum analyzer with high-frequency high-impedance passive probe (LO-/reference frequencies and RF power levels) and oscilloscope with a 10:1 probe (DC-voltages and low frequency signals). The RF-section is build around one RF-ASIC (HELGO N7500). For easier troubleshooting, this RF troubleshooting document is divided into sections.
RM-8/RM-47/RM-48 Nokia Customer Care RF Key Component Placement Figure 1: 43 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-8/RM-47/RM-48 Nokia Customer Care RF test points The RF power supplies are generated in the UEMEK and can be measured either in the Small Signal Chamber or in the Base Band Chamber. On the drawings below small points show the locations of the test points.
RM-8/RM-47/RM-48 Nokia Customer Care ■ Receiver Figure 3: Test points of the receiver 45 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-8/RM-47/RM-48 Nokia Customer Care ■ Transmitter Figure 4: Test points of the transmitter Issue 2 03/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-8/RM-47/RM-48 Nokia Customer Care ■ Synthesizer Figure 5: Test points of the synthesizer 47 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-8/RM-47/RM-48 Nokia Customer Care RF in General Figure 6: RF block diagram RF block diagram consisting of: • RF front-end module • Power amplifier module • RF ASIC • VCTCXO module • VCO module Issue 2 03/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-8/RM-47/RM-48 Nokia Customer Care The RF front-end is a triple-band direct conversion transceiver. Using direct conversion, no intermediate frequencies are used for up- or down-conversion.
RM-8/RM-47/RM-48 Nokia Customer Care RF Power Supply Configuration Figure 7: UEM 4.75 V [ 4.6V ... 4.9V ] VR1 VR2 2.78 V [ 2.70V ... 2.86V ] charge pump (VCP) Tx modulator (Vcc_ModOut) TX buffer & EDGE ALCs (VRF_TX) VR3 2.78 V [ 2.70V ... 2.86V ] VCTCXO (+VCC) digital interface (VDIG) 2.78 V [ 2.70V ... 2.86V ] VR4 Rx Front End (VRF_RX) Bias & Rx CH filters (VF_RX) RF controls (VPAB_VLNA) 2.78 V VR5 [ 2.70V ... 2.86V ] PLL prescaler (VPRE) phasing dividers of Rx (VLO) VR6 VR7 [ 2.70V ...
RM-8/RM-47/RM-48 Nokia Customer Care General Specifications of Transceiver Parameter Unit Cellular System GSM850/900, GSM1800, GSM1900 Modulation schemes GMSK, 8-PSK RX Frequency Band GSM850:824 … 849 MHz GSM900:925 … 960 MHz GSM1800:1805 ... 1880 MHz GSM1900:1930 … 1990 MHz TX Frequency Band GSM850:869 … 894 MHz GSM900:880 … 915 MHz GSM1800:1710 ... 1785 MHz GSM1900:1850 … 1910 MHz Output Power GMSK GSM850:+5 … +33 dBm (3.2 mW … 2 W) GSM900:+5 … +33 dBm (3.2 mW … 2 W) GSM1800:+0 … +30 dBm (1.
RM-8/RM-47/RM-48 Nokia Customer Care Sensitivity, static channel (+25°C) EGSM:-102 dBm GSM 900:-102 dBm GSM 1800:-102 dBm GSM 1900:-102 dBm Frequency Error, static channel < 0.1 ppm RMS Phase Error < 5.0 ° Peak Phase Error < 20.0 ° EVM, 8- PSK 9% Peak EVM, 8- PSK 30 % Issue 2 03/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-8/RM-47/RM-48 Nokia Customer Care Receiver Verification and Troubleshooting ■ General instructions for RX Troubleshooting • Connect the phone to a PC, which has Phoenix Service Software and a dongle installed, using either Repair jig and DAU-9S cable (RS232) or DKU-2 cable (USB). • Connect the phone to a power supply (DC voltage: 4.0V, max. current: 3A) and an RF signal generator. Switch the phone on. • Start Phoenix Service Software and open FBUS or USB connection.
RM-8/RM-47/RM-48 Nokia Customer Care The setup should now look like this: Make the following settings on your signal generator: • Frequency: GSM 850: 881.66771 MHz (channel 190 + 67.710 kHz offset) GSM 900: 942.46771 MHz (channel 37 + 67.710 kHz offset) GSM 1800: 1842.86771 MHz (channel 700 + 67.710 kHz offset) GSM 1900: 1960.06771 MHz (channel 661 + 67.
RM-8/RM-47/RM-48 Nokia Customer Care • Select → Testing → RF Controls. • Select → Band → GSM 850 or GSM 900 or GSM 1800 or GSM 1900. • Active unit → RX. • Operation mode →Burst. • RX/TX Channel → 190 or 37 or 700 or 661. • Select → Testing → SNR Measurement. • Select → Measurement mode → Fast SNR (Radio Button). • Press → Start. The window “Signal Measurement” pops up informing on frequency and power level of the signal generator to be set.
RM-8/RM-47/RM-48 Nokia Customer Care GSM 1800: > 18 dB GSM 1900: > 18 dB Note! SNR measurement may fail due to unwanted radio interference (blocking signals). This can be avoided by keeping the phone in shielded case during measurement. Try also measuring on different channels before taking any further actions. Measuring Front-End Power Levels using Spectrum Analyzer • Start Phoenix Service Software and open FBUS or USB connection. • Select → Scan Product (Ctrl-R).
RM-8/RM-47/RM-48 Nokia Customer Care Figure 8: Receiver troubleshooting 1 and 2 Make sure that the synthesizer Make sure that is working as described in Synthesizer is working section Synthesizer these as described section of Synthes troubleshooting instructions. see Synthesizer Fault Finding Tree No Receiver Fault Chart 1. Yes All 3 bands Phoenix: Operating mode: local Open RF Controls: Active Unit: Op.
RM-8/RM-47/RM-48 Nokia Customer Care Figure 9: Receiver troubleshooting 3, 4, 5 and 6 Oscilloscope: Check supply voltages of RF ASIC: VR4 = 2.8V No Check supply filter components (C2226, C7519) and UEM UEMEK No Check supply filter components (C2222, C7521) and UEM UEMEK No Check supply filter components (R7511, C7524) and UEM UEMEK Receiver Fault Chart 3. Yes Oscilloscope: Check supply voltages of RF ASIC: VR6 = 2.8V Yes Oscilloscope: Check reference voltages of RF part: 1.35V VrefRF01 = 1.
RM-8/RM-47/RM-48 Nokia Customer Care Figure 10: Single band troubleshooting (receiver troubleshooting 7 and8) Single band fault finding Select faulty band in Phoenix and continue measurements on dedicated Rx part. Receiver Fault Chart 7. Phoenix: Open SNR Measurement: Meas. Mode: Fast SNR Press Start. Signal Generator: Level: Frequency: –92dBm RX frequency from Phoenix Phoenix: SNR measurement ok? (SNR > 18dB) Front-end is ok. Yes Phoenix: Operating mode: local RF Controls: Active Unit: Op.
RM-8/RM-47/RM-48 Nokia Customer Care Figure 11: Receiver troubleshooting 9 Receiver Fault Chart 9. If selected band = GSM1900 Yes No 1) Spectrum Analyzer: Check external LNA V7800: Output signal pin 3 > - 56dBm No Oscilloscope: Check voltages for V7800: Voltage at C7802 = 2.6V Voltage at C7800 = 0V Yes Yes 1) Spectrum Analyzer: Check balun T7800: Both output signals at pin 3 & 4 > - 62dBm Yes Change V7800, Check also T7800 No RF ASIC N7500 seems to be defective. Change N7500.
RM-8/RM-47/RM-48 Nokia Customer Care ■ RX Signal Paths Antenna Switch (RX/TX Switch) RF signal is fed directly from the lower block antenna connector (X7800) to the antenna switch (Z7800). This switch has the function of a diplexer, which consists of two combined paths (low pass/high pass filter combination), a GSM850/900 and a GSM1800/1900 path. The GSM 850/ 900 input signals pass the switch to Rx1 output.
RM-8/RM-47/RM-48 Nokia Customer Care RX front-end The RX front-end includes three SAW filters GSM 850/900 (US/EU), GSM1800 and GSM1900 to provide the wanted out-of-band blocking immunity. GSM 850/900 and GSM 1800 filters have unbalanced (single-ended) inputs and balanced outputs. The outputs are matched to the corresponding LNA inputs of the RF ASIC (N7500) with differential matching network (LC-type). GSM 1900 band filter has unbalanced input and output.
RM-8/RM-47/RM-48 Nokia Customer Care Transmitter ■ General Instructions for Transmitter Troubleshooting • Connect the phone to a PC, which has Phoenix Service Software and a dongle installed, using either Repair jig and DAU-9S (RS232) cable or DKU-2 cable (USB). • Connect the phone to a power supply (DC voltage of 3.9V) and switch the phone on. The value of the DC voltage of 3.9V at the phone battery connector is crucial.
RM-8/RM-47/RM-48 Nokia Customer Care The table below shows the possible different switching states. To switch the TX -GSM 1800/ VANT2 VANT3 VANT1 Rx1 Rx2 Rx3 VC1 VC2 VC3 GSM GSM GSM 850/900 1800 1900 [Volt] [Volt] [Volt] Rx Rx Rx 0 0 0 0 0 0 0 2.7 (0, 850) 2.7 0 2.7 0 2.7 2.7 0 TX_IN_ EGSM TX_IN_ DCS Tx1 Tx2 GSM GSM 850/900 1800/1900 Tx Tx X X X X X 1900 path both signals VANT2 and VANT3 have to be activated.
RM-8/RM-47/RM-48 Nokia Customer Care The Phoenix window should now look like this: Now the measurement setup, which has been built according to the chapter 8.1, should detect the following output signal of the phone. Pout = +23dBm @ 836.6 MHz If this is not the case, then go to the next chapter 8.3.2.1 GMSK for the troubleshooting. Start the preparations as described in chapter 8.1. EDGE: First, select operation mode to the local. Then, select → Testing → RF control.
RM-8/RM-47/RM-48 Nokia Customer Care The Phoenix window should now look like this: Now the measurement equipment should detect the following output signal of the phone: Pout = +24 dBm @ 836.6 MHz If this is not the case, then go to the next chapter 8.3.2.2 EDGE for the troubleshooting. Start the preparations as described in chapter General Instructions for Transmitter Troubleshooting. Issue 2 03/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-8/RM-47/RM-48 Nokia Customer Care Fault Finding Chart for GSM850 Transmitter In following, it is assumed that the TXP signal is used as trigger-signal. For that a TXP test point is provided. Figure 13: GSM850 troubleshooting, GMSK Use Phoenix to select TX_Data Type: "1" or "0" TX Power Level: 10 Ch190 Ensure Vbatt=3.
RM-8/RM-47/RM-48 Nokia Customer Care Figure 14:GSM850 troubleshooting, EDGE Use Phoenix to select TX_Data Type: "1" or "0" TX Power Level: 10 Ch190 Ensure Vbatt=3.9 V Yes Oscilloscope C7710 Ensure that the GMSK is OK! IREF01 R7707 BOM1 VPCTRL_900 BOM2 VPCTRL_900 0.5 Volt R7713 Vdc = 2.78 Volt Vdc= 0 V Vdc= 2.7 V No Check PA N7700 Check Power Loop Mode R7713 Yes Spectrum analyzer RF-connector Pout = +24 dBm, 836.
RM-8/RM-47/RM-48 Nokia Customer Care The setup should now look like this: Now the measurement equipment should detect the following output signal of the phone: Pout = +23dBm @ 897.4 MHz If this is not the case, then go to the next chapter 8.4.2.1 GMSK for troubleshooting. EDGE: • Select operation mode to the local. • Select → Testing → RF control.
RM-8/RM-47/RM-48 Nokia Customer Care The setup should now look like this: Now the measurement equipment should detect the following output signal of the phone: Pout = +24 dBm @ 897.4 MHz If this is not the case, then go to the next chapter 8.4.2.2 EDGE for the troubleshooting. Fault Finding Chart for GSM900 Transmitter In following, it is assumed that the TXP signal is used as trigger-signal. For that a TXP test point is provided. Issue 2 03/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia.
RM-8/RM-47/RM-48 Nokia Customer Care Figure 15:GSM900 troubleshooting, GMSK Use Phoenix to select TX_Data Type: "1" or "0" TX Power Level: 10 Ch37 Ensure Vbatt=3.9 V Yes Oscilloscope R7707 R7511 C7512 TXP testpoint J7504 C7520 C7526 Yes Oscilloscope C7529 Mode VREFRF01 VR2 TXP VR5 VR3 TXIOUTP C7529 TXIOUTN C7530 TXQOUTP C7530 TXQOUTN Yes Oscilloscope C7701 VC1 VC2 VC3 R7715 Yes Spectrum analyzer Z7700 out, R7705 in VTXB_900 VANT_2 VANT_3 VANT_1 VPCTRL_90 0 RFin_850/ 900 Vdc = 0 Volt Vdc = 1.
RM-8/RM-47/RM-48 Nokia Customer Care Spectrum analyzer Z7800TX1 (PA N7700 RFOut_850/900) Power = +25 dBm, 897.4 MHz Yes Spectrum analyzer RF-connector Pout = +23 dBm, 897.4 MHz Yes GSM900 TX OK No Check PA N7700 Check Power Loop Check TXC Check No Antenna Switch (Z7800) EDGE: Figure 16: GSM900 troubleshooting, EDGE Use Phoenix to select TX_Data Type: "1" or "0" TX Power Level: 10 Ch37 Ensure Vbatt=3.
RM-8/RM-47/RM-48 Nokia Customer Care ■ GSM1800 Transmitter General instructions for GSM1800 TX Troubleshooting Start the preparations as described in chapter “General Instructions for Transmitter Troubleshooting”. GMSK: • Set the operating mode to local mode. • Select → Testing → RF Controls and wait until the RF Controls window is popped up. • Select → Band → GSM 1800, Active unit → TX, Operation mode → Burst, RX/TX Channel → 700, TX Power Level → 5 and TX Data Type → Random.
RM-8/RM-47/RM-48 Nokia Customer Care • Operation mode → Burst • RX/TX Channel → 700 In the popup window TX control values: • EDGE → ON • Tx data type → Alternate • TX PA mode → High • TX Power level → 5 The setup should now look like this: Now the measurement equipment should detect the following output signal of the phone: Pout = +21 dBm @ 1747.8 MHz If this is not the case, then go to the next chapter 8.5.2.2 for Troubleshooting. Issue 2 03/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia.
RM-8/RM-47/RM-48 Nokia Customer Care Fault finding chart for GSM1800 transmitter It is assumed that the TXP signal is used as a trigger-signal and a TXP test point is provided in the following chart. Figure 17: GSM1800 transmitter troubleshooting, GMSK TX_Data Type: "1" or "0" TX Power Level: 5 Ch700 Ensure Vbatt=3.
RM-8/RM-47/RM-48 Nokia Customer Care Figure 18: GSM1800 transmitter troubleshooting, EDGE Use Phoenix to select TX_Data Type: "1" or "0" TX Power Level: 5 Ch700 Ensure Vbatt=3.9V Yes Oscilloscope C7710 Ensure that GMSK is OK! IREF_1800_ 1900 C7707 BOM1 VPCTRL_1800 BOM2 VPCTRL_1800 0.5 Volt R7715 Vdc = 2.78 Volt Vdc= 0 V Vdc= 2.7 V No Check PA N7700 Check Power Loop Mode R7715 Yes Spectrum analyzer RF-connector Pout = +21 dBm, 1747.
RM-8/RM-47/RM-48 Nokia Customer Care The setup should now look like this: Now the measurement equipment should detect the following output signal of the phone: Pout = +23dBm @ 1880 MHz If this is not the case, then go to the chapter Fault finding chart for GSM1900 transmitter, GMSK troubleshooting. EDGE: • Select operation mode to the local.
RM-8/RM-47/RM-48 Nokia Customer Care The setup should now look like this: Now the measurement equipment should detect the following output signal of the phone: Pout = +21 dBm @ 1880 MHz If this is not the case, then go to the next chapter 8.6.2.2 EDGE for the troubleshooting. Fault finding chart for GSM1900 transmitter In the following, it is assumed that the TXP signal is used as trigger-signal. For that a TXP test point is provided. Issue 2 03/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia.
RM-8/RM-47/RM-48 Nokia Customer Care Figure 19: GSM1900 transmitter troubleshooting, GMSK Use Phoenix to select TX_Data Type: "1" or "0" TX Power Level: 5 Ch661 Ensure Vbatt=3.9 V Yes Oscilloscope R7707 R7511 C7512 TXP testpoint J7504 C7520 C7526 Yes Oscilloscope C7529 Mode VREFRF01 VR2 TXP VR5 VR3 TXIOUTP C7529 TXIOUTN C7530 TXQOUTP C7530 TXQOUTN Yes Oscilloscope C709 C7531 VTXB_1800 _1900 VANT_2 VANT_3 VC1 VC2 VC3 R7715 VANT_1 VPCTRL_18 00_1900 Vdc = 0 Volt Vdc = 1.35 Volt Vdc = 2.
RM-8/RM-47/RM-48 Nokia Customer Care Figure 20: GSM1900 transmitter troubleshooting, EDGE Use Phoenix to select TX_Data Type: "1" or "0" TX Power Level: 5 Ch661 Ensure Vbatt=3.9 V Yes Oscilloscope C7710 R7707 BOM1 VPCTRL_1900 BOM2 VPCTRL_1900 Yes Spectrum analyzer RF-connector Pout = +21 dBm, 1880 MHz Yes GSM 1900 TX OK Issue 2 03/2005 Ensure that the GMSK is OK! IREF_1800_ 1900 Vdc > 0.5 Volt R7715 Vdc = 2.78 Volt Vdc= 0 V Vdc= 2.
RM-8/RM-47/RM-48 Nokia Customer Care 81 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-8/RM-47/RM-48 Nokia Customer Care Synthesizer ■ Synthesizer operation check • Start Phoenix Service Software and open FBUS or USB connection. FBUS connection is available only with DAU-9S cable (contact via test pads on phone board) and USB connection is available only with DKU-2 cable (contact via bottom connector of the phone). • Select “Scan Product” (Ctrl-R or in menu File - Scan Product). • Wait until phone information is shown in the lower right corner of the screen. • Set operating mode to local.
RM-8/RM-47/RM-48 Nokia Customer Care The tuning sensitivity of the VCO is typically 250MHz/V. The typical relation of VCO frequency and tuning voltage is shown in the following diagram: Figure 1: Typical frequency tuning curve for the Matsushita VCO Temperature: +25°C Frequency [MHz] 4500 4000 3500 3000 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 VCTRL [V] 2.55V @ 24.4 .. 25.4°C 2.7V @ 24.4 .. 25.4°C High limit Low limit 2.85V @ 24.4 .. 25.
RM-8/RM-47/RM-48 Nokia Customer Care ■ Reference Oscillator 26 MHz (VCTCXO) The reference oscillator is implemented as Voltage Controlled Temperature Compensated Crystal Oscillator (VCTCXO) module. The component (G7501) is located in the Small Signal chamber. The reference oscillator has two functions: • 26 MHz Reference frequency for the PLL synthesizer. • 13 MHz System clock for BB (26 MHz VCTCXO signal is divided by 2 in Helgo RF ASIC N7500, 13 MHz output named REFOUT).
RM-8/RM-47/RM-48 Nokia Customer Care Figure 2: Troubleshooting the PLL Synthesizer Setup with Phoenix: Band: GSM 1800 Mode: RX Continuous Channel: 700 For a failure free working of BB the 26MHz clock is necessary! If the 26MHz clock is not working please check first the necessary voltage VR3. This can be checked after power on for a time of about 32sec. After that time the voltage is going down. Spectrum analyzer VCO out (G7500) fVCO = 3685.6 MHz Utune=2.1..2.
RM-8/RM-47/RM-48 Nokia Customer Care Figure 3: VCO output, 1800 band, RX on, continuous output ■ Frequencies Table 1: TX, RX and VCO frequency ranges Band GSM 850 EGSM900 DCS 1800 PCS 1900 Issue 2 03/2005 Carrier Frequency Divider used VCO Frequency Tx 824.2 - 848.8 MHz 4 3296.8 – 3395.2 MHz Rx 869.2 – 893.8 MHz 4 3476.8 – 3575.2 MHz Tx 880.2 – 914.8 MHz 4 3520.8 – 3659.2 MHz Rx 925.2 – 959.8 MHz 4 3700.2 – 3839.2 MHz Tx 1710.2 – 1784.8 MHz 2 3420.4 – 3569.6 MHz Rx 1805.
RM-8/RM-47/RM-48 Nokia Customer Care TX, RX and VCO frequencies for particular channel can be calculated from equations in these tables: System Channel number TX frequency RX frequency Unit GSM850 128 ≤ n ≤ 251 f = 824.2 + 0.2*(n-128) f = 869.2 + 0.2*(n-128) MHz E-GSM 900 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 DCS1800 512 ≤ n ≤ 885 f = 1710.2 + 0.2*(n-512) f = 1805.2 + 0.
RM-8/RM-47/RM-48 Nokia Customer Care DC Supply Current Check For a quick check of DC power supplies refer to the diagram below. Voltage drops are measured at the respective resistors pads. Note, that not all currents can be checked in such a way, see the marking “na” (not applicable) in the diagram. Figure 4: Checking the DC supply current UEM VR1 VR2 VR3 4.78 V [ 4.6V ... 4.9V ] 2.81 V [ 2.70V ... 2.86V ] 2.81 V 2.81 V [ 2.70V ... 2.86V ] VR6 VR7 VrefRF01 2.81 V [ 2.70V ... 2.86V ] 2.81 V [ 2.
RM-8/RM-47/RM-48 Nokia Customer Care Phoenix Tuning General instructions for tuning: • Connect the phone to a PC, which has Phoenix Service Software and a dongle installed, using either Repair jig and DAU-9S (RS232) cable or DAU-9T cable (RS232) or DKU-5 cable (USB). • Connect the phone to a power supply (DC voltage of 4.0V, min. current of 3A) and switch the phone on. • Start Phoenix Service Software and open FBUS connection.
RM-8/RM-47/RM-48 Nokia Customer Care The following power levels shall be displayed in the headline: • Automatic Calibration mode -60 [dBm] • 1st Manual Calibration mode -50 [dBm] • 2nd Manual Calibration mode -85 [dBm] First, connect an RF signal generator to the antenna port of the test jig. Second, select “Calibration mode” to Automatic. The setup should now look like this: Press Start: The current calibration values are loaded from the phone memory and displayed in the window as “PM values”.
RM-8/RM-47/RM-48 Nokia Customer Care Typical calibration values will look like this: The results shall be in following limits: Calibration value / Test case Typical Low limit High limit AFC value / check AFC_VALUE [DAC] 53 -350 +350 AFC Slope / check AFC_SLOPE [DAC] 128 90 165 Rssi 0 / Check RX GSM xxx Gain A 1 [dB] 65 59 71 Rssi 2 / Check RX GSM xxx Gain A 3 [dB] 77 71 83 GSM xxx means the selected band: GSM 850 / 900 / 1800 / 1900 Rx Calibration GSM1800 and GSM1900 Both bands are av
RM-8/RM-47/RM-48 Nokia Customer Care • Select → Band → GSM 1800 or GSM 1900 The following power levels shall be displayed in the headline: • Automatic Calibration mode -60 [dBm] • 1st Manual Calibration mode -50 [dBm] • 2nd Manual Calibration mode -85 [dBm] Connect an RF signal generator to the antenna port of the test jig. Select “Calibration mode” to Automatic.
RM-8/RM-47/RM-48 Nokia Customer Care A typical result will look like this: The results shall be in these limits: Calibration value / Test case Typical Low limit High limit Rssi 0 / Check RX GSM xxx Gain A 1 [dB] 65 59 71 Rssi 2 / Check RX GSM xxx Gain A 3 [dB] 77 71 83 GSM xxx means the selected band: GSM 850 / 900 / 1800 / 1900. RX Band Filter Response Compensation This alignment is necessary to compensate the frequency response of the RX band filters.
RM-8/RM-47/RM-48 Nokia Customer Care The necessary band selection is made by Phoenix automatically in the low band. Press Start and the current “Level Differences (dB)” are loaded from the phone memory and displayed on the “Rx Band Filter Response Compensation” window. The setup should now look like this: Connect an RF signal generator to the antenna port of the test jig.
RM-8/RM-47/RM-48 Nokia Customer Care The setup should now look like this: • Follow the instructions for power level and signal frequency input for the remaining “Manual Tuning” stages 2 to 9 as indicated on the pop-up window. • Press OK after each step. • Press Stop to finalize the tuning. Auto Tuning A faster and more comfortable method for Band Filter Calibration is automatic tuning.
RM-8/RM-47/RM-48 Nokia Customer Care • Select automatic in the “Tuning mode” in the “Rx Band Filter Response Compensation” window. • Press Start and the current “Level Differences (dB)” are loaded from the phone memory and displayed on the “Rx Band Filter Response Compensation” window. The setup should now look like this: • Adjust the “Input signal Level (dBm)” field on the “Rx Band Filter Response Compensation” window to -60 [dBm]. • Press Tune in Phoenix.
RM-8/RM-47/RM-48 Nokia Customer Care Limits The typical value of the “Measured Level Difference (dB)” on channel 37 (middle of band) shall be approximately 0 dB. RX Channel Select Filter Calibration Rx Channel Select Filter is a base band filter inside RF ASIC. There is an internal calibration routine for calibrating the channel filter and it is done without external RF signal. The Channel select filter is common part for all bands and it shall be calibrated only in one band.
RM-8/RM-47/RM-48 Nokia Customer Care The setup should now look like this: Select Auto in the “Tuning mode” in the “Rx Channel Select Filter Calibration” window. Press Tune and the optimal values are found. Press Stop, the values are saved to the phone and the calibration has finished.
RM-8/RM-47/RM-48 Nokia Customer Care TX Power Level Tuning RM-8 and RM-9 supports GMSK and EDGE mode for the Power amplifier. Therefore the Power level tuning must be carried out for both modes in each band.It is strongly recommended to use Phoenix Autotune capability. The functionality of Phoenix Autotune is described in 11.3 Fully automatic Calibration, Tuning & Measurement by Phoenix. Nevertheless manual tuning is described below. This tuning must be done in all three bands.
RM-8/RM-47/RM-48 Nokia Customer Care Press Start and a window pops up: • Select → TX Data Type → Random • Select → TX PA Mode → High Adjust DAC Values in TX PA mode ‘High’ for bold power levels according to target values: Table 2: GSM850, GSM900 Power level Target power Power level Target power 5 32.
RM-8/RM-47/RM-48 Nokia Customer Care Table 3: GSM1800, GSM 1900 Power level Target power Power level Target power 0 29.5 dBm (30.5dBm for GSM1900) 9 12 dBm 1 28 dBm 10 10 dBm 2 26 dBm 11 8 dBm 3 24 dBm 12 6 dBm 4 22 dBm 13 4 dBm 5 20 dBm 14 2 dBm 6 18 dBm 15 0 dBm 7 16 dBm Base -27 dBm 8 14 dBm The power levels may differ from the target power levels mentioned in Phoenix.
RM-8/RM-47/RM-48 Nokia Customer Care • Select →Band → For example GSM900 • Set Edge On. Press Start and a window pops up: • Select →TX Data Type → All1 • Select →TX PA Mode → High Adjust DAC Values in TX PA mode ‘High’ for all power levels according to the target values: Table 4: EGPRS850, EGPRS900 Power level Target power Power level Target power 8 27.9 dBm 16 12.4 dBm 9 26.4 dBm 17 10.4 dBm 10 24.4 dBm 18 8.4 dBm 11 22.4 dBm 19 6.4 dBm 12 20.4 dBm Base -17 dBm 13 18.
RM-8/RM-47/RM-48 Nokia Customer Care Table 5: EGPRS1800, EGPRS1900 Power level Target power Power level Target power 2 26.4 dBm 10 11.4 dBm 3 24.9 dBm 11 9.4 dBm 4 23.4 dBm 12 7.4 dBm 5 21.4 dBm 13 5.4 dBm 6 19.4 dBm 14 3.4 dBm 7 17.4 dBm 15 1.4 dBm 8 15.4 dBm Base -17 dBm 9 13.4 dBm The power levels may differ from the target power levels mentioned in Phoenix.
RM-8/RM-47/RM-48 Nokia Customer Care If a spectrum analyzer is used, make the following settings, adjust Center frequency and Markers according to bands. GSM900 Center Frequency 897.4 MHz Frequency Span 300 kHz Resolution Bandwidth 3kHz Video Bandwidth 3kHz Sweep Time 3 sec. Sweep Type Clear/Write Detector Type Max Peak Reference level 35 dBm Marker 1 897.33229 MHz Marker 2 897.4 MHz Marker 3 897.
RM-8/RM-47/RM-48 Nokia Customer Care Press Start and a window pops up: • Select →TX Data Type → All 1 105 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-8/RM-47/RM-48 Nokia Customer Care The Spectrum Analyzer now shows a plot like this: Marker 1 [T1] RBW 3 kHz RF Att Ref Lvl 25.88 dBm VBW 3 kHz Mixer 35 dBm 897.33229000 MHz SWT 3 s 35 21 dB Offset 30 Unit 1 [T1] 1 30 dB -20 dBm dBm 25.88 dBm A 897.33229000 MHz LN 2 [T1] -7.19 dBm 20 897.40000000 MHz 3 [T1] -11.55 dBm 897.46771000 MHz 10 1MA 0 2 3 -10 -20 -30 -40 -50 F2→ F1→ -60 -65 Center 897.4 MHz Date: 30 kHz/ 24.OCT.
RM-8/RM-47/RM-48 Nokia Customer Care The Spectrum Analyzer now shows a plot like this: Marker 1 [T1] RBW 3 kHz RF Att Ref Lvl 25.82 dBm VBW 3 kHz Mixer 35 dBm 897.33229000 MHz SWT 3 s 35 21 dB Offset 30 Unit 1 [T1] 1 30 dB -20 dBm dBm 25.82 dBm A 897.33229000 MHz LN 2 [T1] -21.06 dBm 20 897.40000000 MHz 3 [T1] -11.52 dBm 897.46771000 MHz 10 1MA 0 3 -10 2 -20 -30 -40 -50 F2→ F1→ -60 -65 Center 897.4 MHz Date: 30 kHz/ 24.OCT.
RM-8/RM-47/RM-48 Nokia Customer Care The Spectrum Analyzer now shows a plot like this: RBW 3 kHz RF Att Ref Lvl 25.61 dBm VBW 3 kHz Mixer 35 dBm 897.33229000 MHz SWT 3 s Marker 1 [T1] 35 21 dB Offset 30 Unit 1 [T1] 1 30 dB -20 dBm dBm 25.61 dBm A 897.33229000 MHz LN 2 [T1] -22.44 dBm 20 897.40000000 MHz 3 [T1] -38.76 dBm 897.46771000 MHz 10 1MA 0 -10 2 -20 -30 3 -40 -50 F2→ F1→ -60 -65 Center 897.4 MHz Date: 30 kHz/ 24.OCT.
RM-8/RM-47/RM-48 Nokia Customer Care ■ Fully automatic Calibration, Tuning & Measurement by Phoenix “Auto-Tune” Auto-tune is designed to align the phone' s RF part easier and faster, it calibrates, tunes and measures the following for RM-8 and RM-9: • Rx channel select filter calibration • Rx calibration • RX band filter response compensation • RX Dtos balance calibration • Rx AM suppression • Tx power level tuning • Tx I/Q tuning and saves the results in a log-file, if wanted.
RM-8/RM-47/RM-48 Nokia Customer Care Edit the column “Loss/dB”:. Click on the register card “Jig”. New jigs can be defined by their names and losses versus frequency (button: Add). 3 jigs are pre-defined: • NoJig (attenuation 0 (null) versus frequencies) has to be selected, if the phone is connected with RF cable. • Maxwell Jig • Asterix Jig Click on the register card “Product” and select in the row RM-8 respectively RM-9 the type of “used jig” by double clicking of the field on the right (no jig=NoJIG).
RM-8/RM-47/RM-48 Nokia Customer Care A window pops up with the names of jigs defined: • Select a jig to be used. • Press save. GPIB interface The GPIB card shall be labeled by National Instruments or at least compatible with their products. Drivers must be installed and card “accepted” by Phoenix. The following procedure has to be made once for “acceptance”: • Select → Tools (Alt-T) • Options (Alt-O) • GPIB card (Alt-G) The window “GPIB Card” pops up.
RM-8/RM-47/RM-48 Nokia Customer Care The set up should now look like this: Automatic tuning procedure • Select → Tuning (Alt-U) • Auto-Tune (Alt-A) • Tune (Alt-T) The Auto-Tune results are displayed as follows: and they are logged in a result- file, if initiated according to chapter Log file. Issue 2 03/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-8/RM-47/RM-48 Nokia Customer Care To enable the creation of a log file to save the calibration, tuning and measurement results edit the command of the “autotune_RM-8.ini” file as follows: Row 8: Logging 1 The additional path for the logging file can be defined in row 9. Delete the character “;” at the beginning of the row to enable the command. Otherwise the log-files will be written to the directory\text-file: Phoenix\Products\RM-8\autotune_results_yymmdd_hhmmss.
RM-8/RM-47/RM-48 Nokia Customer Care FM-radio troubleshooting (RM-8 only) Notes to FM-Radio Troubleshooting: Use 1MHz 1X probe when measuring audio and clock signals with oscilloscope Use active RF probe when measuring frequencies with spectrum analyzer Use Module Jig and connect audio test cable to audio output and connect RF generator to FM input and force “Tomahawk Stereo Headset” on FM Radio Test Phoenix. RF Test signal parameters: • Amplitude, A, -67dBm • Carrier frequency, fc, 98.
RM-8/RM-47/RM-48 Nokia Customer Care ■ FM-Radio Troubleshooting Figure 5: FM-Radio troubleshooting flowchart Set phone into LOCAL mode. Start FM-radio Does the radio start? No Check R6101 and measure 32 kHz clk signal from R6101, retest starting. Start OK? Measure voltages from pins C6103 and C6116. Is it ~2,7V? Retest starting. Start OK? No Check N6100 solder in X ray if possible. Try to resolder. Start OK now? No No Yes Yes Yes Yes Connect RF-test signal (note). Set radio channel to 98.0 MHZ.
RM-8/RM-47/RM-48 Nokia Customer Care Figure 6: FM-radio audio left output FM-radio audio right output FM-radio RF ground FM-radio RF input Issue 2 03/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-8/RM-47/RM-48 Nokia Customer Care Figure 7: FM-clock signal measured from resistor R6101 Figure 8: FM-radio audio signal measured from testpoints J2012 and 2013 117 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-8/RM-47/RM-48 Nokia Customer Care Figure 9: FM-radio output signal (1kHz) measured from C6180 and C6181 Issue 2 03/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
