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Nokia RH-18 Troubleshooting Instructions

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Customer Care Solutions
RH-18/36/38 Series Transceivers
Troubleshooting Instructions
Nokia Corporation
Issue 1 10/03

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  • Page 1 Customer Care Solutions RH-18/36/38 Series Transceivers Troubleshooting Instructions Nokia Corporation Issue 1 10/03...
  • Page 2 RH-18/36/38 Company confidential Troubleshooting Instructions CCS Technical Documentation [This page left intentionally blank] Nokia Corporation. Page 2 Issue 1 10/03...
  • Page 3: Table Of Contents

    Phoenix commands ....................32 GSM1900 TX output power..................32 Troubleshooting diagram for GSM1900 TX .............33 General Instructions for RH-18/38 GSM900 RX Troubleshooting......35 Troubleshooting Chart for GSM900 Receiver ............36 General Instructions for GSM1800 RX Troubleshooting .........38 Troubleshooting Chart for GSM1800Receiver ............39 Measurement points in the receiver ................
  • Page 4 RH-18/38 Manual Alignment using Phoenix............... 50 RX calibration ......................50 GSM1800 RX calibration ..................51 RX channel select filter .....................52 RX Band Filter Response ..................53 Tx Power tuning ......................54 TX power tuning GSM.................... 54 TX power tuning PCN..................... 57 I/Q tuning ........................59 RF control ........................61...
  • Page 5: Baseband Troubleshooting

    CCS Technical Documentation Baseband troubleshooting Baseband test points This document contains the Nokia 1100 troubleshooting diagrams. Test points are described and listed in the A3 schematic diagrams. Troubleshooting diagrams In this section, Troubleshooting diagrams is provided for the most common problems of the Nokia 1100 NOTE : Since both D200 (UEM) and D400(UPP) are underfilled, they can not be replaced.
  • Page 6: Phone Is Dead

    RH-18/36/38 Company confidential CCS Technical Documentation Phone is dead This means that the phone do not draw any current at all when supply is connected and/ or powerkey is pressed. It is assumed that the voltage supplied is 3.6 VDC. The UEM will prevent any functional- ity what so ever at battery/supply levels below 2.9 VDC.
  • Page 7: Flash Programming Do Not Work

    Company confidential RH-18/36/38 CCS Technical Documentation Flash programming do not work The flash programming can only be done via the pads on the PWB (J396). In case of Flash failure in FLALI station, problem is most likely related to SMD problems.
  • Page 8: Power Does Not Stay On Or Phone Is Jammed

    RH-18/36/38 Company confidential CCS Technical Documentation Power does not stay on or phone is jammed If this kind of failure is presenting itself immediately after FLALI, it is most likely caused by ASICs missing contact with PWB. 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.
  • Page 9: Display Information : "Contact Service

    Company confidential RH-18/36/38 CCS Technical Documentation Display information : "Contact Service" This error can only happen at power up where several self-tests is run. If any of these test cases fails the display will show the message: "Contact Service". It's individual test cases so the below lineup of error hunting's has no chronological order.
  • Page 10: The Phone Do Not Register To The Network, Or The Phone Cannot Make A Call

    RH-18/36/38 Company confidential CCS Technical Documentation The phone do not register to the network, or the phone cannot make a 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 'burried' in one or more of the inner layers of the PWB.
  • Page 11: Sim Related Faults

    Company confidential RH-18/36/38 CCS Technical Documentation SIM related faults Insert SIM card fault 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.
  • Page 12: Sim-Card Rejected

    RH-18/36/38 Company confidential CCS Technical Documentation SIM-Card rejected The error ”SIM card rejected” means that the ATR message received from SIM card is cor- rupted, e.g. data signal levels are wrong. The first data is always ATR and it is sent from card to phone.
  • Page 13: Audio Related Faults 1: Earpiece And Microphone

    Company confidential RH-18/36/38 CCS Technical Documentation Audio related faults 1: Earpiece and microphone Earpiece do not work Replace : Earpiece Error still present Z150, R161 Check : Check Z150, R161 is R386, PWB. working correctly Else defective D200* (no short/open-circuit)
  • Page 14: Audio Related Faults 2: Headset

    RH-18/36/38 Company confidential CCS Technical Documentation Audio related faults 2: Headset Headset earpiece do not work and the isn't any mechanical problem R183, Z102 Replace : Check R183, Z102 is working correctly C183 and/or Z102 (no open-circuit) Defective D200* Headset microphone do not...
  • Page 15: Charging Failure Troubleshooting

    Company confidential RH-18/36/38 CCS Technical Documentation Charging failure troubleshooting Phone is OFF - battery is completely empty (<=3,1VDC) and no current from charger when connected Check : L100 F100, L100, V100, C100, VCHAR > 2,1VDC R200, System-connector. Defective D200* Phone is ON or OFF - battery...
  • Page 16: Charging Troubleshooting 2

    RH-18/36/38 Company confidential CCS Technical Documentation Charging troubleshooting 2 Display info when charger is connected : "Not charging" R206 Voltage on R206 towards Check : D200 is ~0,8VDC X105, R202, R206, C240. when power is connected. (BSI must be 75K)
  • Page 17: General Rf Troubleshooting

    Company confidential RH-18/36/38 CCS Technical Documentation General RF Troubleshooting Two types of measurements are used in the following. It will be specified if the measure- ment type is "RF" or "LF". RF measurements are done with a Spectrum Analyser and a high-frequency 500 •...
  • Page 18: Rf Key Component Placement

    RH-18/36/38 Company confidential CCS Technical Documentation RF Key component placement Figure 13: 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 )
  • Page 19 Company confidential RH-18/36/38 CCS Technical Documentation Refer to the picture below for measuring points at the UEM (D200). Figure 14: Supply points at UEM (D200) Figure 15: Supply point at Mjoelner (N600) Nokia Corporation. Issue 1 10/03 Page 19...
  • Page 20 RH-18/36/38 Company confidential CCS Technical Documentation [This page left intentionally blank] Nokia Corporation. Page 20 Issue 1 10/03...
  • Page 21: Rh-36 Receiver Troubleshooting

    Start Phoenix and establish connection to the phone Phoenix commands RF Controls .Band GSM 850 RX .Continuous mode Channel 190 .AGC 8 FEG ON + 46 dB The setup should now look like this: Figure 16: GSM850 RF controls window Nokia Corporation. Issue 1 10/03 Page 21...
  • Page 22: Troubleshooting Diagram For Gsm850 Receiver

    EGSM SAW filter Check Z602 SAW filter output Z602 -65dBm Spectrum analyzer Check check signal after Inductor inductors L603, L602 L602 and L603 -65DbM Oscilloscope VRX 2.7V Check Check Mjoelner Baseband serial interface Nokia Corporation. Page 22 Issue 1 10/03...
  • Page 23 By measuring with an oscilloscope at RXIP or RXQP on a working GSM 850 receiver this picture should be seen. Signal amplitude peak-peak 789 mV DC offset 1.2 V Figure 18: RX850 I/Q signal waveform Nokia Corporation. Issue 1 10/03 Page 23...
  • Page 24: General Instructions For Rh-36 Gsm1900 Rx Troubleshooting

    Start Phoenix and establish connection to the phone Phoenix commands RF Controls .Band GSM 1900 RX .Continuous mode Channel 661 .AGC 8 FEG ON + 46 dB The setup should now look like this: Figure 19: GSM1900 RF controls Nokia Corporation. Page 24 Issue 1 10/03...
  • Page 25: Troubleshooting Diagram For Gsm1900Receiver

    PCN SAW filter Check Z602 SAW filter output Z601 -65dBm Spectrum analyzer Check check signal after Inductor inductors L601, L611 L601 and L611 -65DbM Oscilloscope VRX 2.7V Check Check Mjoelner Baseband serial interface Nokia Corporation. Issue 1 10/03 Page 25...
  • Page 26 By measuring with an oscilloscope at RXIP or RXQP on a working GSM 1900 receiver this picture should be seen. Signal amplitude peak-peak 460 mV DC offset 1.2 V Figure 21: RX1900 I/Q signal waveform Nokia Corporation. Page 26 Issue 1 10/03...
  • Page 27: Measurement Points In The Receiver

    Company confidential RH-36 CCS Technical Documentation Measurement points in the receiver Figure 22: RX measurements point at the RX/TX Switch - Z700 Figure 23: Measurements points at the RX-Filters – Z601/Z602 Nokia Corporation. Issue 1 10/03 Page 27...
  • Page 28 RH-36 Company confidential CCS Technical Documentation Figure 24: RX I/Q Signals, Baseband shielding can UEM (D200) Nokia Corporation. Page 28 Issue 1 10/03...
  • Page 29: Rh-36 Transmitter Troubleshooting

    RH-36 Transmitter troubleshooting Measurement points for the transmitter Figure 25: Figure 15: TX measuremnet points in the PA ( N700 ) shielding can Figure 26: TX measurement point in Mjolner (N600) shielding can Nokia Corporation. Issue 1 10/03 Page 29...
  • Page 30: General Instructions For Rh-36 Gsm Tx Troubleshooting

    Select File and Product: Gemini Select: Maintenance, Testing and RF Controls Band: GSM 850 Active Unit: Tx Power Level: Tx Data Type: Random Your screen should look like: Figure 27: GSM850 RF controls window Nokia Corporation. Page 30 Issue 1 10/03...
  • Page 31: Gsm850 Tx Output Power

    CCS Technical Documentation GSM850 TX output power Measure the output power of the phone; it should be around 32.5 dBm. Remember the loss in the jig; around 0.3 dB. Figure 28: VPCTRL_G & TXC Nokia Corporation. Issue 1 10/03 Page 31...
  • Page 32: General Instructions For Rh-36 Gsm1900 Tx Troubleshooting

    Figure 29: GSM1900 RF controls screen shot GSM1900 TX output power Measure the output power of the phone. It should be around 28.5 dBm. Remember the loss in the jig; around 0.7 dB. Nokia Corporation. Page 32 Issue 1 10/03...
  • Page 33: Troubleshooting Diagram For Gsm1900 Tx

    Company confidential RH-36 CCS Technical Documentation Troubleshooting diagram for GSM1900 TX Figure 30: GSM1900 TX troubleshooting Nokia Corporation. Issue 1 10/03 Page 33...
  • Page 34 RH-36 Company confidential CCS Technical Documentation [This page left intentionally blank] Nokia Corporation. Page 34 Issue 1 10/03...
  • Page 35: General Instructions For Rh-18/38 Gsm900 Rx Troubleshooting

    Company confidential RH-18/38 CCS Technical Documentation General Instructions for RH-18/38 GSM900 RX Trouble- shooting 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 190 .AGC 8 FEG ON + 46 dB...
  • Page 36: Troubleshooting Chart For Gsm900 Receiver

    RH-18/38 Company confidential CCS Technical Documentation Troubleshooting Chart for GSM900 Receiver Figure 32: EGSM Receiver Troubleshooting chart Apply -55dBm 942.4 MHz offset 67.71kHz from generator antenna conn Oscilloscope Check RX/TX Oscilloscope at RX i/Q switch at check signal 588mVpp RX900...
  • Page 37 Company confidential RH-18/38 CCS Technical Documentation 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 33: RX900 I/Q signal waveform Nokia Corporation.
  • Page 38: General Instructions For Gsm1800 Rx Troubleshooting

    RH-18/38 Company confidential 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 661 .AGC 8 FEG ON + 46 dB...
  • Page 39: Troubleshooting Chart For Gsm1800Receiver

    Company confidential RH-18/38 CCS Technical Documentation Troubleshooting Chart for GSM1800Receiver Figure 35: GSM1800 receiver Troubleshooting chart Apply -55dBm 1842.8 MHz offset 67.71kHz from generator antenna conn Oscilloscope Check RX/TX Oscilloscope at RX i/Q switch at check signal 588mVpp RX1800 VC1 and VC2 Check Mjoelner DC offset 1.35V...
  • Page 40: Measurement Points In The Receiver

    RH-18/38 Company confidential 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 36: RX1800 I/Q signal waveform Measurement points in the receiver Figure 37: RX measurements point at the RX/TX Switch - Z700 Nokia Corporation.
  • Page 41 Company confidential RH-18/38 CCS Technical Documentation Figure 38: Measurements points at the RX-Filters – Z601/Z602 Figure 39: RX I/Q Signals, Baseband shielding can UEM (D200) Nokia Corporation. Issue 1 10/03 Page 41...
  • Page 42: Rh-18/38 Transmitter Troubleshooting

    RH-18/38 Company confidential CCS Technical Documentation RH-18/38 Transmitter troubleshooting Measurement points for the transmitter Figure 40: TX measuremnet points in the PA ( N700 ) shielding can Figure 41: TX measurement point in Mjolner (N600) shielding can Nokia Corporation. Page 42...
  • Page 43: General Instructions For Rh-18/38 Gsm Tx Troubleshooting

    RH-18/38 CCS Technical Documentation General instructions for RH-18/38 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.
  • Page 44 RH-18/38 Company confidential CCS Technical Documentation Figure 43: VPCTRL_G and TXC signal Nokia Corporation. Page 44 Issue 1 10/03...
  • Page 45: Pcn Transmitter General Instructions For Pcn Tx Troubleshooting

    Company confidential RH-18/38 CCS Technical Documentation 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.
  • Page 46: Synthesizer

    RH-18/38 Company confidential 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.
  • Page 47: Troubleshooting Diagram For Pll Synthesizer

    Company confidential RH-18/38 CCS Technical Documentation Troubleshooting diagram for PLL Synthesizer Figure 46: PLL Troubleshooting diagram Nokia Corporation. Issue 1 10/03 Page 47...
  • Page 48: Phone Fails After Power On

    RH-18/38 Company confidential 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.
  • Page 49: Measurement Points At The Pll/Vco

    Company confidential RH-18/38 CCS Technical Documentation Measurement points at the PLL/VCO Figure 47: Measurement point for PLL Nokia Corporation. Issue 1 10/03 Page 49...
  • Page 50: Rh-18/38 Manual Alignment Using Phoenix

    RH-18/38 Company confidential CCS Technical Documentation RH-18/38 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.
  • Page 51: Gsm1800 Rx Calibration

    Company confidential RH-18/38 CCS Technical Documentation 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...
  • Page 52: Rx Channel Select Filter

    RH-18/38 Company confidential 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..
  • Page 53: Rx Band Filter Response

    Company confidential RH-18/38 CCS Technical Documentation 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...
  • Page 54: Tx Power Tuning

    RH-18/38 Company confidential CCS Technical Documentation Tx Power tuning Select Maintenance , Tuning, Tx Power Level Tuning TX power tuning GSM 1 Select edge off, GSM 900 TX power tuning window1 Figure 52: 2 Press Start and select from where to load values. It is best to have PC saved data from a good phone.
  • Page 55 Company confidential RH-18/38 CCS Technical Documentation Figure 53: TX power levwel 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.
  • Page 56 RH-18/38 Company confidential CCS Technical Documentation Figure 54: 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.
  • Page 57: Tx Power Tuning Pcn

    Company confidential RH-18/38 CCS Technical Documentation TX power tuning PCN Figure 56: PCN (GSM1800) TX power tuning window Figure 57: Start TX power level tuning dialogue 1 Select GSM 1800 band (PCN) 2 Start 3 Select where to get values from. Normally Permanent Memory Nokia Corporation.
  • Page 58 RH-18/38 Company confidential CCS Technical Documentation Figure 58: 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...
  • Page 59: I/Q Tuning

    Company confidential RH-18/38 CCS Technical Documentation 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 60: I/Q tuning window 1 Select where to get values. Normally select Load From Product 2 Start 3 Tune offset values to lowest carrier.
  • Page 60 RH-18/38 Company confidential CCS Technical Documentation Figure 61: TX I/O tuning window Note: Remember to tick Save to Product if you want to save the values in the phone. Stop to end the tuning with the selected save option Same procedure for PCN as for GSM.
  • Page 61: Rf Control

    Company confidential RH-18/38 CCS Technical Documentation 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.
  • Page 62: Call Testing

    RH-18/38 Company confidential 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.

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