Nokia RH-3 Series Troubleshooting - Rf
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Nokia RH-3 Series Troubleshooting - Rf

Nokia RH-3 Series Troubleshooting - Rf

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CCS Technical Documentation
RH-3 Series Transceivers
Troubleshooting - RF
Nokia Corporation
Issue 1 06/2003
Confidential

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  • Page 1 CCS Technical Documentation RH-3 Series Transceivers Troubleshooting - RF Nokia Corporation Issue 1 06/2003 Confidential...
  • Page 2 RH-3 Troubleshooting - RF CCS Technical Documentation Nokia Corporation Page 2 Confidential Issue 1 06/2003...

  • Page 3: Table Of Contents

    Description of RF ASICs ..................... 43 Jedi (N601) ........................43 Yoda (N700) ......................44 Alfred (N901) ......................44 Orca (N803) .......................44 Shamu (N802) ......................44 GPS ASIC (N054) .....................44 Probing Diagrams ......................44 Tuning Descriptions ..................... 50 Nokia Corporation Issue 1 06/2003 Confidential Page 3...
  • Page 4 RH-3 Troubleshooting - RF CCS Technical Documentation Nokia Corporation Page 4 Confidential Issue 1 06/2003...

  • Page 5: Rf Troubleshooting

    Note: After opening the shield lids, allways replace them with new lids. Conditions of Phone TX Power Low If TX power is low, turn on transmitter in local mode using Phoenix. Check: Nokia Corporation Issue 1 06/2003 Confidential Page 5...

  • Page 6: Receiver Not Working Properly

    Phoenix, an untuned phone will have all zeros in tuning file), and has passed tun- ing. 4 Ensure call box channel is set for a channel in PRL, and ensure SID is correct. Nokia Corporation Page 6 Confidential Issue 1 06/2003...

  • Page 7: Transmitter Troubleshooting

    Local PCS/CELL CDMA GenIO 8 = H TxIF and RF AGC = 0 Chnn Tx Freq Rx Freq GenIO 12 = L 836.52 881.52 1065.12 GenIO 13 = L 1880 1960 2143.6 Nokia Corporation Issue 1 06/2003 Confidential Page 7...
  • Page 8 (PA) has the DC/DC converter (PMIC device) which controls it. The following tables illustrate the circuits that have an effect on the transmitter path and how to troubleshoot them. The following table illustrates the PA troubleshooting information. Nokia Corporation Page 8 Confidential Issue 1 06/2003...
  • Page 9 PA Gain Step PA Vcc Spec Gen IO 12 GenIO13 volt (v) Name Bypass * Depends on VBATT Cell PMIC The following table illustrates the PMIC troubleshooting information. Setup: Mode Band Local PCS/CELL Nokia Corporation Issue 1 06/2003 Confidential Page 9...
  • Page 10 Digital GND, shared gnd with pin right-L810 VBATT VBATT Switcher supply right-L810 VBATT VBATT Switcher supply Switcher GND, does not share with pin 9 and pin 13 Good phone PMIC Resistances Resistance 1.59M 1.6M Nokia Corporation Page 10 Confidential Issue 1 06/2003...
  • Page 11 The following table illustrates the PDM values and their typical values for the IF AGC, RF AGC Jedi Pout, Gain steps, and the PA VCC levels. It also shows the typical power output at the RF connector. Nokia Corporation Issue 1 06/2003 Confidential...
  • Page 12 Cell Power Detector The following tables illustrate the measurements required for troubleshooting the Cell power detector. Setup: Mode Band Chnn Local PCS/CELL 600/384 Input Chnn Tx Freq Rx Freq 836.52 881.52 1880 1960 Nokia Corporation Page 12 Confidential Issue 1 06/2003...
  • Page 13 1000 -387 27.5 1.36 1095 none dBm/ dBm only 30kHz refers to total power meas- ured Detector Reference and DC Supply Typical Label Test Point Value Det Ref left-C803 Det Supply bottom-C257 Nokia Corporation Issue 1 06/2003 Confidential Page 13...

  • Page 14: Pcs Transmitter

    836.52 881.52 1065.12 GenIO 13 = L 1880 1960 2143.6 PCS TX Step Typical Part Part Ref Label Test Point Units Comments Value Jedi Pin 7 J601 0.1 to 0.9, VAC, VDC Nokia Corporation Page 14 Confidential Issue 1 06/2003...
  • Page 15 Accessible only if PCS duplexor shield can is removed Z800 Diplexer left L802 dBm/30kHz PCS Power Amplifier The preceding table is the path that one would take to determine where the problem is in Nokia Corporation Issue 1 06/2003 Confidential Page 15...
  • Page 16 3 - 4 C806 Overall gain VO to 3.6 to 7.6 bypass +/- 0.5 unit Phoenix Control and Example Values PA Gain Step PA Vcc Spec Name GenIO 12 GenIO 13 volt (v) Bypass Nokia Corporation Page 16 Confidential Issue 1 06/2003...
  • Page 17 Digital DC supply L810 Digital GND, shared gnd with pin right VBATT VBATT Switcher supply L810 right VBATT VBATT Switcher supply L810 Switcher GND, does not share with pin 9 and pin 13 Nokia Corporation Issue 1 06/2003 Confidential Page 17...
  • Page 18 The following table illustrates the PDM values and their typical values for the IF AGC, RF AGC Jedi Pout, Gain steps, and the PA VCC levels. It also shows the typical power output at the RF connector. Nokia Corporation Page 18 Confidential...
  • Page 19 PCS Power Detector The following tables illustrate the measurements required for troubleshooting the PCS power detector. Setup: Mode Band Chnn Local PCS/CELL 600/384 Input Tx Freq Rx Freq 836.52 881.52 1880 1960 Nokia Corporation Issue 1 06/2003 Confidential Page 19...
  • Page 20 C807 -148 -16.5 right R814 1.81 left C807 -162 right R814 1.778 left C807 Detector Reference and DC Supply Label Test Point Typical Value Det Ref left C803 Det Supply bottom C257 Nokia Corporation Page 20 Confidential Issue 1 06/2003...

  • Page 21: Receiver Troubleshooting

    Alfred Pin 17 Mixer out- right L903 dBm/30kHz Mixer is passive put (183.6 and typical con- MHz) version gain is -5 Nokia Corporation Issue 1 06/2003 Confidential Page 21...
  • Page 22 VHF Tx Lo Tx IF 457.2 228.6 VHF RX Lo Rx IF 367.2 183.6 Setup CW or Default LNA Gain Mode Band CDMA Mode Local PCS/CELL -80 dBm RX IF AGC High Nokia Corporation Page 22 Confidential Issue 1 06/2003...
  • Page 23 MHz band CELL band L901 881.52 top R910 closer MPs are blocked by shield RFA_VDD_ top R910 same as pin 5 C_MIX_IN Pin 16 -75, dBm, MHz band CELL band 881.52 Nokia Corporation Issue 1 06/2003 Confidential Page 23...
  • Page 24 Rx IF 367.2 183.6 Setup CW or Default LNA Gain Mode Band CDMA Mode Local PCS/CELL -80dBm RX IF AGC High Input Chnn Tx Freq Rx Freq 836.52 881.52 1065.12 1880 1960 2143.6 Nokia Corporation Page 24 Confidential Issue 1 06/2003...
  • Page 25 DC TCXO AVDD_TCX left C734 VCTCXO buffer amplifier DC sup- TCXO_IN right C728 5, 19.2 5, 19.2 dBm, MHz VCTCXO VCTCXO input to Yoda DVDD_SYN left C704 Digital Yoda syn- thesizer DC supply Nokia Corporation Issue 1 06/2003 Confidential Page 25...
  • Page 26 C707 -70, 183.6 -73, 183.6 dBm, MHz Alfred out- Yoda RF input A from Alfred VGA_INB right C702 -70, 183.6 -73, 183.6 dBm, MHz Alfred out- Yoda RF input B from Alfred Nokia Corporation Page 26 Confidential Issue 1 06/2003...
  • Page 27 In Normal mode, the phone will adjust RF RX 1.019 1.039 Rx power is coming in, the I and Q will be about 0.5 Vpp and 1.3 V 0.861 0.896 0.728 0.747 Approximately 1 pdm per 1 mV 0.563 0.596 Nokia Corporation Issue 1 06/2003 Confidential Page 27...

  • Page 28: Pcs Receiver

    -50 dBm Input Freq: 1960 MHz Rx AGC PDM: 225 PDM CDMA Generator Code Domain Setup Channel Power Walsh code Pilot -7 dB Paging -12 dB Traffic -15.6 dB Sync -16 dB Nokia Corporation Page 28 Confidential Issue 1 06/2003...
  • Page 29 263.6 VHF Rx Lo Rx IF 367.2 183.6 Setup: CW or Default LNA Gain Mode Band CDMA Mode Local PCS/CELL -80 dBm RX IF AGC High Input Chnn Tx Freq Rx Freq Nokia Corporation Issue 1 06/2003 Confidential Page 29...
  • Page 30 MHz band CELL band 881.52 MIX_OUT right R903 -66, 183.6 -67, 183.6 dBm, MHz UHF LO UHF = 1065.2 (CELL), 2143.6 (PCS) IFA_IN right C906 -63, 183.6 -65, 183.6 dBm, MHz Nokia Corporation Page 30 Confidential Issue 1 06/2003...
  • Page 31 L909 -42, 183.6 dBm, MHz Alfred provides about 40 dBm overall IF_SEL pin 23 always gnded for this frequency plan LO_IN top L904 1, 1065.2 2.4, 2143.6 dBm, MHz UHF LO Nokia Corporation Issue 1 06/2003 Confidential Page 31...
  • Page 32 C742 analog DC supply J704 1.25, 0.2 1.25, 0.2 VDC, VAC J703 1.25, 0.2 1.25, 0.2 VDC, VAC J702 1.25, 0.2 1.25, 0.2 VDC, VAC J701 1.25, 0.2 1.25, 0.2 VDC, VAC Nokia Corporation Page 32 Confidential Issue 1 06/2003...
  • Page 33 OUT4_CTR L_TEST_1b OUT3_CTR Pin 7(TL) G501 synthesizer L_TEST_1 band select OUT2_CTR bottom Alfred RF band L_TEST_Qb R904 select OUT1_CTR bottom 27.0 27.0 VDC-H, Alfred LNA gain L_TEST_Q R902 VDC-L state control Nokia Corporation Issue 1 06/2003 Confidential Page 33...
  • Page 34 C707 -70, 183.6 -73, 183.6 dBm, MHz Alfred out- Yoda RF input A from Alfred VGA_INB right C702 -70, 183.6 -73, 183.6 dBm, MHz Alfred out- Yoda RF input B from Alfred Nokia Corporation Page 34 Confidential Issue 1 06/2003...
  • Page 35 1.039 Rx power is coming in, the I and Q will be about 0.5 Vpp and 1.3 V 0.861 0.896 0.728 0.747 Approximately 1 pdm per 1 mV 0.563 0.596 0.441 0.46 Nokia Corporation Issue 1 06/2003 Confidential Page 35...

  • Page 36: Gps Troubleshooting

    The shield lid must be always replaced with new one after it is opened. Check that there are no short circuits on PWB caused by plate ends. GPS Receiver Receiver troubleshooting is divided into four sections: Nokia Corporation Page 36 Confidential Issue 1 06/2003...
  • Page 37 3 High Frequency Probe for Spectrum Analyzer (Please note that the signal levels mentioned in the RX troubleshooting have been measured with an active probe.) 4 Spectrum analyzer up to 6.7 GHz 5 PC with Phoenix SW and GPS option Nokia Corporation Issue 1 06/2003 Confidential Page 37...
  • Page 38 ÷ 2 GPS Clock ÷ 8 LO/8 Test Point LO/8 Test 196.416 MHz ÷12 fcomp=16.368MHz Ph ase DATA Programming CLOCK 16.368 MHz Oscillator Interface ENABLE TCXO Figure 1: GPS RF Functional Diagram Nokia Corporation Page 38 Confidential Issue 1 06/2003...

  • Page 39: Gps Rf Quick Fault-Finding Chart

    Check signal level at V001 Not OK Replace transistor V001 output (C010) Check signal level at N054 Not OK Replace filter Z004 input (C069) Figure 2: GPS RF Fault-finding chart (Quick reference) Nokia Corporation Issue 1 06/2003 Confidential Page 39...

  • Page 40: Block Diagrams

    Antenna BB AMP VHF PLL 2 ÷ PCS Duplexer 367.2 MHz UHF VCO 1052.61-1077.57 2113.6-2173.55 Reference Clock To Base-Band Cell Duplexer UHF Synthsizer VCTCXO Loop Filter JEDI Figure 4: Receiver Block Diagram Nokia Corporation Page 40 Confidential Issue 1 06/2003...

  • Page 41: Synthesizer

    ÷ 2 GPS Clock ÷ 8 LO/8 Test Point LO/8 Test 196.416 MHz ÷12 fcomp=16.368MHz Ph ase DATA Programming CLOCK 16.368 MHz Oscillator Interface ENABLE TCXO Figure 6: GPS RF Block Diagram Nokia Corporation Issue 1 06/2003 Confidential Page 41...

  • Page 42: Frequency Plan

    π 367.2MHz RX Q CELL & PCS:183.6MHz Figure 7: Frequency Plan Block Diagram Jedi The following figure illustrates a detailed block diagram of the Jedi TX chip. Figure 8: Jedi Block Diagram Nokia Corporation Page 42 Confidential Issue 1 06/2003...

  • Page 43: Yoda

    IC, Jedi, includes VHF synthesizers with external tanks and the UHF PLL circuitry exclud- ing VCOs. This Tx IC plus Cell and PCS band power amplifiers, SAW filters, power detec- tors, isolators, and duplexers form the transmitter. Therefore, it is a highly integrated transmitter. Nokia Corporation Issue 1 06/2003 Confidential Page 43...

  • Page 44: Yoda (N700)

    (except the LNA which is a discrete design) with the exception of some passive components. Probing Diagrams The following figure is an assembly drawing of the top of the board. Figure 10: PWB Top View Nokia Corporation Page 44 Confidential Issue 1 06/2003...
  • Page 45 Troubleshooting - RF The following figure is the assembly drawing of the bottom of the board. Figure 11: PWB Bottom View Power Amplifier (PA) Module test points: Figure 12: PA Module test points Nokia Corporation Issue 1 06/2003 Confidential Page 45...
  • Page 46 RH-3 Troubleshooting - RF CCS Technical Documentation The following figure is the close-up view of the transmitter section of the board. Figure 13: Transmitter view Nokia Corporation Page 46 Confidential Issue 1 06/2003...
  • Page 47 The following diagram indicates the TX Module test point: Figure 14: TX Module test point The following figure is the close-up view of the receiver section of the board. Figure 15: Receiver view Nokia Corporation Issue 1 06/2003 Confidential Page 47...
  • Page 48 RH-3 Troubleshooting - RF CCS Technical Documentation Figure 16: Receiver (Yoda) test points Nokia Corporation Page 48 Confidential Issue 1 06/2003...
  • Page 49 -3 dBm @ 1065.12 MHz (Cell) -3 dBm @ 2146.3 MHz (PCS) L501 1065.12 MHz (Cell) 2146.3 MHz (PCS) C505 2.72 VDC C510 5 dBm @ 19.2 MHz C521 2.8 VDC R517 1.26 VDC Nokia Corporation Issue 1 06/2003 Confidential Page 49...

  • Page 50: Tuning Descriptions

    If the voltages are wrong, then check the power detector at R803, C804, L803, N805, C803, C807, and also Jedi. If the voltages are correct and it still fails, check the UEM (D200). Nokia Corporation Page 50 Confidential Issue 1 06/2003...
  • Page 51 TX signal at each point in range. A wide range is allowed since the the TX chain. transmitter is not yet tuned. Nokia Corporation Issue 1 06/2003 Confidential Page 51...
  • Page 52 G501 is not 2.2v, but the carrier is centered, then there is a problem with the VCTCXO G501. If there is 2.7v on pin 4 and the sol- dering is correct, then replace G500. Nokia Corporation Page 52 Confidential Issue 1 06/2003...
  • Page 53 TX IF AGC is adjusted so that generates the PDM signals. Check AGC PDM the output power is +11 dBm. voltages. Troubleshoot the rest of the cell transmitter if needed. Nokia Corporation Issue 1 06/2003 Confidential Page 53...
  • Page 54 PA. Visually check sol- dering first, and probe on PA output as a last resort. Nokia Corporation Page 54 Confidential Issue 1 06/2003...
  • Page 55 Yoda, although different amplitudes therefore, if the AGC value is larger than are going in. normal, then the AGC is compensating for loss in the chain prior to the variable gain amplifier. Nokia Corporation Issue 1 06/2003 Confidential Page 55...
  • Page 56 LNA in high gain mode, and again with the LNA in low gain mode. For Cell and PCS, it is done over several channels. Nokia Corporation Page 56 Confidential Issue 1 06/2003...

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