Customer Care Solutions Technical Documentation Troubleshooting Instructions ISSUE 1 02/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions [This page left intentionally blank] 2 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation Table of Contents Page No Baseband troubleshooting ............................................................................................. 5 Baseband testpads ....................................................................................................... 5 Component side (PWB backside) ............................................................................. 5 Display connector (PWB front side) ...........................
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions TX power tuning GSM ........................................................................................... 45 TX power tuning PCN ............................................................................................ 48 I/Q tuning .................................................................................................................. 50 RF control ........................................................................
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation Baseband troubleshooting Baseband testpads Component side (PWB backside) Figure 1: Component side (PWB backside) Display connector (PWB front side) Figure 2: Display connector (PWB front side) ISSUE 1 02/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions Close up of testpads Production test pads for programming FLASH and service functions (J396) RFBUS 6 RF I/Q signals COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 Troubleshooting Instructions FLASH ISSUE 1 02/2004 CCS Technical Documentation CBUS / DBUS / FBUS / MBUS / SLEEPX / PURX / AUDIO SHUTDOWN COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions Fault Finding Charts Phone is dead Nominal battery voltage is 3.7 VDC. The phone (UEM) wont startup at battery/supply levels below 3.1 VDC. The software will turn off the phone at 3.21 VDC. Phone is dead Yes X105 VBAT = 3,6VDC No Check : X105 Yes L260,L261,L262,L263,L264,L265 C260,C261,C262,C263,C264,C265 Voltage = 3,6VDC Check : No L260,L261,L262,L263,L264,L265 C260,C261,C262,C263,C264,C265 No B200, C209, C210, PWB.
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation Flash programming does not work . Flash prgramming do not work Error from prommer: "Phone doesn't set FBUS_TX line low" Yes J396, R108 Check connection between pad 1,2 & 3 on J396 and R108 No Check : R108, PWB Yes J409, J410, J411, J412 Voltage level at 1,8VDC Check : No PWB. Else defective D200* Yes Try reading MCU ID with Phoenix. Check : No Reading OK? PWB. Else defictive D400* Yes Try reading Flash ID with Phoenix.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions Power doesn't stay on or phone is jammed If for some reason the MCU does not service the watchdog register within the UEM, the operations watchdog will run out after approximately 32 seconds and should initiate a reset. Power doesn't stay on, or phone is jammed J404 Sleep clock = 32.768 kHz, 1.8Vpp Check : No B200, C209, C210, PWB. Else defective D200* Yes J402 PURX = 1,8VDC, 1 sec. after power-key is pressed Check : No PWB.
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation Display information: "Contact Service" This message shows when internal self-tests have failed. If any of the following cases fails the display will show the message: "Contact Service". The lineup below has no chronological order. Use common sense and experience to decide which test case to start error hunting at.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions No network or no call If the phone doesn't register to the network, the fault can be in either BB or RF. Only few signals can be tested since several signals is 'buried' in one or more of the inner layers of the PWB. First of all check that it’s not a SIM LOCK causing the error by using a Test-SIM card and connect the phone to a tester.
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation SIM related faults The hardware of the SIM interface from UEM (D200) to the SIM connector (X387) can be tested without a SIM card. When the power is switched on the phone first check 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”. Display shows : "Insert SIM Card" Yes Check : X387, R386, PWB.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions SIM-Card rejected Display shows : "SIM Card Rejected" Yes X387 VSIM = min. 1,6V(1,8V Card) VSIM = min. 2,8V(3V Card) (See illustration below) Check : No R386, PWB. Else defective D200* Yes X387 ATR data can be seen at SIM data pin. No Check : X387, R386, PWB. Yes SIM Interface OK For reference a picture with normal SIM power-up is shown below.
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation Audio related faults Earpiece = Speaker mounted in display assy. IHF = Integrated handsfree. Speaker mounted in back cover (D-cover). No sound in earpiece Earpiece do not work Replace : Earpiece Error still present Z150, R161 Check Z150, R161 is working correctly (no short/open-circuit) Replace : No Z150 / R161 Yes Defective D200* (or PWB error) ISSUE 1 02/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions Microphone does not work Microphone do not work and it's not a mechanical problem Z100 Check Z100 is working correctly (no short/open-circuit) No C101,C102 & C103 Check for short-circuit. No Replace : Z100 Replace : C101, C102, C103 Error still present R165 Check voltage level on R165 towards UEM (bias) = 2,1V Check : No R165, C168, PWB. Else defctive D200* No R152, R153, R155, R157, R164, C151, C152, C153, C154, PWB.
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation Headset microphone does not work Headset microphone do not work and it's not a mechanical problem R166 Check voltage level on R166 towards UEM (bias) = 2,1V Replace : No R166 and/or Z101 Yes R151 Check voltage level on R151 towards UEM (bias) = 1,0V - 1,4V Check : No R166, R151, C171 Yes R154, R156, R160, R162, R168, C172, C170, C173, C174, Z101 Replace : No Defective component Check XMIC line to UEM (D200) Error still pres
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions No sound from IHF or headset START Insert headset (working reference) Clean/Replace system connector Turn on radio and tune in to a station (using menu navigation). Increase volume with navigation key.
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation Handsfree speaker does not work A FM signal generator at 88 MHz (1KHz LF) and 99% modulation was used as “radio station”. START Check input on N180. (R181/R159) Fig.1 Check output at IHF pads (J151 / J152) Fig.2 no input ok? Check : C159, C180, C181, C183, C186, R159, R181 (D200) no Output ok? yes Input ok Check/Replace : L180, L181, C 189, C190 Check VBAT on C182 Assemble phone. voltage above 3.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions Charging faults Phone is OFF - battery is completely empty (<=3,1VDC) and no current from charger when connected Check : L100 VCHAR > 2,1VDC No F100, L100, V100, C100, R200, R100 (NTC resistor) System-connector. Yes Defective D200* Display info when charger is connected : "Not charging" R206 Voltage on R206 towards D200 is ~0,8VDC when power is connected. (BSI must be 75K) No Check : X105, R202, R206, C240.
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation Phone is ON or OFF - battery nominal voltage (~3,7VDC) and no current from charger when connected L100 VCHAR > 3,7VDC Check : No F100, L100, V100, C100, R200, System-connector. Yes Defective D200 or D400* ISSUE 1 02/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
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RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation General RF Troubleshooting Two types of measurements are used in the following. It will be specified if the measurement type is "RF" or "LF". • RF measurements are done with a Spectrum Analyser and a highfrequency 500 ohm passive probe, for example HP54006A. (Note that when measuring with the 500 ohm probe the signal will be around 20 dB attenuated.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions RF Key component placement Figure 3: RF key components Table 1: RF component placement N600 Mjoelner RF IC Z601 PCN RX SAW Z602 EGSM RX SAW Z603 EGSM TX SAW B600 26 MHz crystal G600 VCO (4.0 GHz UHF VCO ) N700 Power Amplifier (PA) Z700 RX/TX switch 24 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation Refer to the picture below for measuring points at the UEM (D200). Figure 4: Supply points at UEM (D200) Figure 5: Supply point at Mjoelner (N600) ISSUE 1 02/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions General Instructions for GSM900 RX Troubleshooting Connect the phone to a PC with the module repair jig. Start Phoenix and establish connection to the phone Phoenix commands RF Controls .Band GSM 900 RX .Continuous mode Channel 37 .AGC 8 FEG ON + 46 dB The setup should now look like this: Figure 6: GSM900 RF Controls window 26 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation Troubleshooting Chart for GSM900 Receiver Figure 7: EGSM Receiver Troubleshooting chart Apply -55dBm 942.4 MHz offset 67.71kHz from generator to antenna conn YES Oscilloscope at RX i/Q signal 588mVpp DC offset 1.35V Freq.67.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions By measuring with an oscilloscope at RXIP or RXQP on a working GSM 900 receiver this picture should be seen. Signal amplitude peak-peak 789 mV DC offset 1.2 V Figure 8: RX900 I/Q signal waveform 28 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation General Instructions for GSM1800 RX Troubleshooting Connect the phone to a PC with the module repair jig. Start Phoenix and establish connection to the phone Phoenix commands RF Controls .Band GSM 1800 RX .Continuous mode Channel 700 .AGC 8 FEG ON + 46 dB The setup should now look like this: Figure 9: GSM1800 RF control window ISSUE 1 02/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions Troubleshooting Chart for GSM1800Receiver Figure 10: GSM1800 receiver Troubleshooting chart Apply -55dBm 1842.8 MHz offset 67.71kHz from generator to antenna conn YES Oscilloscope at RX i/Q signal 588mVpp DC offset 1.35V Freq.67.
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation XIP or RXQP on a working GSM 1800 receiver this picture should be seen. Signal amplitude peak-peak 460 mV DC offset 1.2 V Figure 11: RX1800 I/Q signal waveform Measurement points in the receiver Figure 12: RX measurements point at the RX/TX Switch - Z700 ISSUE 1 02/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions Figure 13: Measurements points at the RX-Filters – Z601/Z602 Figure 14: RX I/Q Signals, Baseband shielding can UEM (D200) 32 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation RM-4/RM-5 Transmitter troubleshooting Measurement points for the transmitter Figure 15: TX measurement points in the PA (N700) shielding can Figure 16: TX measurement points in Mjolner (N600) shielding can ISSUE 1 02/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions General instructions for RM4/RM-5 GSM TX troubleshooting Apply a RF-cable to the RF-connector to allow the transmitted signal act as normal. RF-cable should be connected to measurement equipment or to at least a 10-dB attenuator, otherwise the PA may be damaged. Start Phoenix-Service-Software and establish a connection to the phone e.g. FBUS. Select File and Product.
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation Figure 18: VPCTRL_G and TXC signal ISSUE 1 02/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions PCN Transmitter General instructions for PCN TX troubleshooting Apply a RF-cable to the RF-connector to allow the transmitted signal act as normal. RF-cable should be connected to measurement equipment or to at least a 10-dB attenuator, otherwise the PA may be damaged. Start Phoenix-Service-Software and establish a connection to the phone e.g. FBUS. Phoenix commands RF Controls .Band GSM 1800 RX .Continuous mode Channel 700 .
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation Synthesizer There is only one PLL synthesizer generating Local Oscillator frequencies for both RX and TX in both bands (PCN and EGSM). The VCO frequency is divided by 2 for PCN operation or by 4 for EGSM operation inside the Mjoelner IC. 26 MHz Reference Oscillator (VCXO ) The 26 MHz oscillator is located in the Mjoelner IC (N600). The coarse frequency for this oscillator is set by an external crystal (B600).
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions Troubleshooting diagram for PLL Synthesizer Figure 21: PLL Troubleshooting diagram 38 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation Phone fails after power on If the phone stops working a short time after the power is turned ON, a possible reason for this could be that the 26MHz system clock signal is not getting to the UPP clock-input in BaseBand. In this case check the following: 1 Turn on the phone and check 2 VCXO Power supply (C620) = 2.7V 3 VCXO output (R420 – end not connected to C425) is 26MHz and approx.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions Measurement points at the PLL/VCO Figure 22: Measurement point for PLL 40 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation Manual Alignment using Phoenix In Phoenix select connection Fbus and Product Gemini. If you power up the board before selecting Fbus, it works without any error messages. Use Jig or other device for RF and bus connection. Attenuation in the probe alone is 0.5dB for 900 and 1dB for 1800. Use CMD55 or other suitable device. Default channels are 37 for GSM900 and 700 for GSM1800.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions GSM1800 RX calibration 1 The existing data in the phone is shown 2 Calibrate, and the new data is shown 3 Stop, and the little window pops up where you can select to save or not 4 Select GSM1800 in the top bar and repeat at channel 700 Figure 24: GSM1800 RX calibration window 42 1 The existing data in the phone is shown 2 Calibrate, and the new data is shown 3 Stop, and the little window pops up where you can select to save o
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation RX channel select filter 1 Select Maintenance, Tuning, Rx Channel Select Filter Calibration. 2 Press Start and you can select to load values from the phone or not. 3 Press AutoTune 4 Press Stop and you can select to save values to the phone or not to.. Figure 25: RX channel selection window Note: This calibration requires no input signal ISSUE 1 02/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions RX Band Filter Response 1 Select Maintenance, Tuning, Rx Band Filter Response Compensation 2 Press Start, Read from PM area and you can select to load values from the phone or not 3 Press Manual Tuning 4 Set the Signal generator according to the pop-up windows 5 When finished press Stop, Write to PM area and you can select to save values to the phone or not 6 Repeat for GSM1800 Figure 26: RX Band filter response window Note: Th
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation Tx Power tuning Select Maintenance, Tuning, Tx Power Level Tuning TX power tuning GSM 1 Select edge off, GSM 900 Figure 27: TX power tuning window1 2 Press Start and select from where to load values. It is best to have PC saved data from a good phone. The data from a "good" phone can be saved to PC for use later. ISSUE 1 02/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions Figure 28: TX power level tuning window 2 1 Select the modulation 1, 0 or random in Tx Data Type. Select random if a GSM tester is used. Then it can synchronise to the burst. 2 Select Tx PA Mode High 3 Tune the highlighted values to the wanted power (Use average burst power) 4 Tune base level to –28dBm (Close to lowest level CMD55 can keep synchronisation) 5 Calculate coefficients 46 COMPANY CONFIDENTIAL Copyright © 2003 Nokia.
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation Figure 29: TX power level tuning 3 1 Select Tx PA Mode low and tune the high lighted values. 2 The base level coefficient is taken from the high mode. Do not change it. 3 Calculate and select Stop Figure 30: Stop TX power level tuning dialogue If you are satisfied with the coefficients and the power, then save to the Permanent memory. You can also save the table to the PC, so that you can load it to an other phone.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions TX power tuning PCN Figure 31: PCN (GSM1800) TX power tuning window Figure 32: Start TX power level tuning dialogue 1 Select GSM 1800 band (PCN) 2 Start 3 Select where to get values from. Normally Permanent Memory 4 OK 48 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation Figure 33: GSM1800 TX power level tuning window 1 Select the wanted modulation. Random if a GSM tester is used, so that you can synchronise the burst. 2 Only high mode is possible 3 Tune the highlighted values to the wanted power 4 Tune base level to –27dBm 5 Stop Figure 34: Stop TX power level tuning dialogue 6 Select where to save the values, one, both or no one can be selected. 7 Yes. That’s the only way to end tuning.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions I/Q tuning Select Maintenance, Tuning, Tx IQ tuning Set CMD55 to Narrow Spectrum on the same band as the phone. Selected in the top menu. Figure 35: I/Q tuning window 1 Select where to get values. Normally select Load From Product 2 Start 3 Tune offset values to lowest carrier. Use Side arrows or +, - . 4 Tune Amplitude and phase to lowest sideband. 5 Check eventually with other modulation (0).
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation Figure 36: TX I/O tuning window Note: Remember to tick Save to Product if you want to save the values in the phone. 1 Stop to end the tuning with the selected save option 2 Same procedure for PCN as for GSM. 3 Remember to tick Save To Product. 4 Stop. Ends tuning and does what you have ticked. ISSUE 1 02/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions RF control This menu can be placed in maintenance or in tuning depending on the Phoenix. It is meant to check the receiver or transmitter without going in call. It works very much like a call, but you have control via the PC, and not via the tester. The TX mode GSM900 can select between Free, High and low mode. It changes the PA mode, but changes also the power level if a level is selected that is not supported in that mode.
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation Call testing If all tunings are done, and the phone TX and RX is working a call is the ultimate test of the phone. Set CMD55, or similar tester, to manual test and switch the phone to normal if it was in local. Remember to have a test sim card in the phone. When the phone has made a registration a call can be made, and it is possible to let the phone answer via Phoenix.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions General instructions for RM-4/5 FM radio Troubleshooting Location of testpoints C372 R362/N360 R362 C367 R360 R385 R385 C360 Phoenix control Connect the phone to a PC with the module repair jig. Start Phoenix and establish connection with the phone. Select “FM Radio Control” in the Testing menu. The setup should look like this: 54 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation Turn on the FM radio through the key marked “Power” and select Tuning. The setup should look like this: It is now possible to tune the radio for the wanted frequency. The troubleshooting guide requires that the radio is turned on. ISSUE 1 02/2004 COMPANY CONFIDENTIAL Copyright © 2003 Nokia. All Rights Reserved.
RM-4/RM-5 CCS Technical Documentation Troubleshooting Instructions Fault finding guide Radio does not work Voltmeter at C367 2.62.86 No Yes Voltmeter at C372 2.7
RM-4/RM-5 Troubleshooting Instructions CCS Technical Documentation A Set radio for 87.5 MHz Voltmeter at C373 0.7
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