Customer Care Solutions RH-18/36/38 Series Transceivers Troubleshooting Instructions Issue 1 10/03 Nokia Corporation
RH-18/36/38 Troubleshooting Instructions Company confidential CCS Technical Documentation [This page left intentionally blank] Page 2 Nokia Corporation.
Baseband troubleshooting .............................................................................................. 5 Baseband test points ....................................................................................................5 Troubleshooting diagrams ...........................................................................................5 Phone is dead ...............................................................................................................
RH-18/38 Manual Alignment using Phoenix............................................................... 50 RX calibration ............................................................................................................50 GSM1800 RX calibration ..........................................................................................51 RX channel select filter .............................................................................................52 RX Band Filter Response ...................
Company confidential RH-18/36/38 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.
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 functionality what so ever at battery/supply levels below 2.9 VDC.
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. Possible failures could be short-circuit of balls under µBGAs (UEM, UPP, FLASH). Missing or misaligned components. In flash programming error cases the flash prommer can give some information about a fault.
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. Unfortunately, the service routine can not be measured. Power doesn't stay on, or phone is jammed J404 Sleep clock = 32.
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. Use common sense and experience to decide which test case to start error hunting at.
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. First of all check that SIM LOCK is not causing the error by using a Test-SIM card and connect the phone to a tester.
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. The phone will try this four times, whereafter it will display ”Insert SIM card”. Display shows : "Insert SIM Card" Yes X387 Verify that phone checks for 1,8V-SIM, and then 3V-SIM during power-up.
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 corrupted, e.g. data signal levels are wrong. The first data is always ATR and it is sent from card to phone. For reference a picture with normal SIM power-up is shown below. Normal SIM power-up sequence Ch1 : VSIM Ch2 : RESET Ch3 : CLOCK Ch4 : DATA Figure 8: Signal diagram Page 12 Nokia Corporation.
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 Z150, R161 is working correctly (no short/open-circuit) Check : No R386, PWB.
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 Check R183, Z102 is working correctly (no open-circuit) No Replace : C183 and/or Z102 Defective D200* Headset microphone do not work and the isn't any mechanical problem R166 Check voltage level on R166 towards UEM (bias) = 2,1V No Replace : C183 and/or Z102 Yes R151 Check voltage level on R151 towards UEM (bias) = 1,0V - 1,4V
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 L100 VCHAR > 2,1VDC Check : No F100, L100, V100, C100, R200, System-connector. No F100, L100, V100, C100, R200, System-connector.
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 D200 is ~0,8VDC when power is connected. (BSI must be 75K) No Check : X105, R202, R206, C240. Yes R207 Voltage (use scope) on R207 towards D200 is ~0,9VDC at peak. (BSI must be 47K) No Check : X105, R202, R207, C220. Yes R200 Voltage on R200 towards D200 same as VBAT voltage Check : No R200, PWB.
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 measurement type is "RF" or "LF". • RF measurements are done with a Spectrum Analyser and a high-frequency 500 ohm passive probe, for example HP54006A. (Note that when measuring with the 500 ohm probe the signal will be around 20 dB attenuated.
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 ) N700 Power Amplifier (PA) Z700 RX/TX switch Page 18 Nokia Corporation.
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) Issue 1 10/03 Nokia Corporation.
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Company confidential RH-36 CCS Technical Documentation RH-36 Receiver troubleshooting General Instructions for GSM850 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 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 Issue 1 10/03 Nokia Corporation.
RH-36 Company confidential CCS Technical Documentation Troubleshooting diagram for GSM850 Receiver Figure 17: GSM850 Receiver troubleshootingt 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.
Company confidential RH-36 CCS Technical Documentation 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 Issue 1 10/03 Nokia Corporation.
RH-36 Company confidential CCS Technical Documentation General Instructions for RH-36 GSM1900 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 1900 RX .Continuous mode Channel 661 .AGC 8 FEG ON + 46 dB The setup should now look like this: Figure 19: GSM1900 RF controls Page 24 Nokia Corporation.
Company confidential RH-36 CCS Technical Documentation Troubleshooting diagram for GSM1900Receiver Figure 20: GSM1900 receiver troubleshooting diagram 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.
RH-36 Company confidential CCS Technical Documentation 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 Page 26 Nokia Corporation.
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 Issue 1 10/03 Nokia Corporation.
RH-36 Company confidential CCS Technical Documentation Figure 24: RX I/Q Signals, Baseband shielding can UEM (D200) Page 28 Nokia Corporation.
Company confidential RH-36 CCS Technical Documentation 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 Issue 1 10/03 Nokia Corporation.
RH-36 Company confidential CCS Technical Documentation General instructions for RH-36 GSM TX troubleshooting Apply a RF-cable to the RF-connector to allow the transmitted signal act as normal. RFcable 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.
Company confidential RH-36 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 Issue 1 10/03 Nokia Corporation.
RH-36 Company confidential CCS Technical Documentation General instructions for RH-36 GSM1900 TX troubleshooting Apply a RF-cable to the RF-connector to allow the transmitted signal act as normal. RFcable 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 1900 RX .
Company confidential RH-36 CCS Technical Documentation Troubleshooting diagram for GSM1900 TX Figure 30: GSM1900 TX troubleshooting Issue 1 10/03 Nokia Corporation.
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Company confidential RH-18/38 CCS Technical Documentation General Instructions for RH-18/38 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 190 .AGC 8 FEG ON + 46 dB The setup should now look like this: Figure 31: GSM900 RF Controls window Issue 1 10/03 Nokia Corporation.
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 to antenna conn YES Oscilloscope at RX i/Q signal 588mVpp DC offset 1.35V Freq.67.
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 Issue 1 10/03 Nokia Corporation.
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 The setup should now look like this: Figure 34: GSM1800 RF control window Page 38 Nokia Corporation.
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 to antenna conn YES Oscilloscope at RX i/Q signal 588mVpp DC offset 1.35V Freq.67.
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 Page 40 Nokia Corporation.
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) Issue 1 10/03 Nokia Corporation.
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 Page 42 Nokia Corporation.
Company confidential 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. RFcable 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.
RH-18/38 Company confidential CCS Technical Documentation Figure 43: VPCTRL_G and TXC signal Page 44 Nokia Corporation.
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. RFcable 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 37 .
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. 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).
Company confidential RH-18/38 CCS Technical Documentation Troubleshooting diagram for PLL Synthesizer Figure 46: PLL Troubleshooting diagram Issue 1 10/03 Nokia Corporation.
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 clockinput 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 (R425 – end not connected to C425) is 26MHz and approx.
Company confidential RH-18/38 CCS Technical Documentation Measurement points at the PLL/VCO Figure 47: Measurement point for PLL Issue 1 10/03 Nokia Corporation.
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. Use CMD55 or other suitable device. Default channels are 37 for GSM900 and 700 for GSM1800.
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 4 Select GSM1800 in the top bar and repeat at channel 700 Figure 49: GSM1800 RX calibration window 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 Issue 1 10/03
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.. Figure 50: RX channel selection window Note: This calibration requires no input signal Page 52 Nokia Corporation.
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 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 51: RX Band filter response window Note: This calib
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 Figure 52: TX 2 Page 54 power tuning window1 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. Nokia Corporation.
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. 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 Issue 1 10/03 Calculate coefficients Nokia Corporation.
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. 3 Calculate and select Stop Figure 55: 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.
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 4 1 Select GSM 1800 band (PCN) 2 Start 3 Select where to get values from. Normally Permanent Memory OK Issue 1 10/03 Nokia Corporation.
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 5 Stop Figure 59: Stop TX power level tuning dialogue Page 58 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.
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. 5 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. Use Side arrows or +, - . 4 Tune Amplitude and phase to lowest sideband. Check eventually with other modulation (0). Issue 1 10/03 Nokia Corporation.
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. 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. Page 60 Nokia Corporation.
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. 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.
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. Remember to have a test simcard 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.
