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Nokia RH-17 Series Troubleshooting - Rf

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CCS Technical Documentation
RH-17 Series Transceivers
Troubleshooting — RF
Nokia Corporation
Issue 1 04/2003
Confidential

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  • Page 1 CCS Technical Documentation RH-17 Series Transceivers Troubleshooting — RF Nokia Corporation Issue 1 04/2003 Confidential...
  • Page 2 RH-17 Troubleshooting — RF CCS Technical Documentation Nokia Corporation Page 2 Confidential Issue 1 04/2003...

  • Page 3: Table Of Contents

    Test 76 - 82 TN TX Limiting Po IS2K Cell: Low channel (or LowMid, MidLow, Mid, MidHigh, HighMid or High channel) ........... 35 Test 100 -101 TS ACPR Cell - High(Low) Offset..........36 Tests 103 - 109 TN AMPS PL2 Po Low (LowMid, MidLow, Mid, MidHigh, Nokia Corporation Issue 1 04/2003 Confidential Page 3...
  • Page 4 To change between Normal and Local modes ............58 To add a baseband to the AMPS transmitter............59 APPENDIX B: Definitions ..................60 Radio Portion of Phone Front Panel .................62 Robin View ........................64 Alfred View .......................65 Back Panel test points ....................67 Nokia Corporation Page 4 Confidential Issue 1 04/2003...

  • Page 5: Rf Troubleshooting

    SN CELL RX DC Offset Q 1023 PM AMPS RX Pass/Fail- Test SN AMPS RX BB Filter SN AMPS RX DC Offset I 1023 SN AMPS RX DC Offset Q 1023 BB Cal ADC Gain 2.63 2.83 Nokia Corporation Issue 1 04/2003 Confidential Page 5...
  • Page 6 TN TX RF AGC CELL Po(1) -23.5 TN TX RF AGC CELL Po(2) -10.5 TN TX RF AGC CELL Po(3) -3.5 TN TX RF AGC CELL Po(4) 11.5 TN GnSwchPnts Init RF GD AMPS 44.99 Nokia Corporation Page 6 Confidential Issue 1 04/2003...
  • Page 7 TN TX LIM Loops CELL MH TN TX LIM Loops CELL HM TN TX LIM Loops CELL HI TN TX LIM Loops CELL IS2K LO TN TX LIM Loops CELL IS2K LM Nokia Corporation Issue 1 04/2003 Confidential Page 7...
  • Page 8 TN RX IF AGC RXdBCtr(0) 23584 30848 TN RX IF AGC RXdBCtr(1) 14000 18000 TN RX IF AGC RXdBCtr(2) 5900 8900 TN LNA AMPS LowGain 3652 TN LNA AMPS HighGain 4359 7713 Nokia Corporation Page 8 Confidential Issue 1 04/2003...

  • Page 9: Troubleshooting Summary

    AGC voltages are correct. 5 According to Tables 2 and 3 (cell/AMPs), check the LOs for proper frequency and amplitude. 6 Ensure power supplies to transmitter have correct voltage, as per Table 13. Nokia Corporation Issue 1 04/2003 Confidential Page 9...
  • Page 10 5 According to Tables 9, 10, and 12 check the LOs for proper frequency and ampli- tude. 6 Ensure power supplies to receiver have correct voltage as per Table 13. Nokia Corporation Page 10 Confidential Issue 1 04/2003...
  • Page 11 RH-17 CCS Technical Documentation Troubleshooting — RF Figure 1: RH-17 PWB bottom (general placement) Nokia Corporation Issue 1 04/2003 Confidential Page 11...
  • Page 12 RH-17 Troubleshooting — RF CCS Technical Documentation Figure 2: RH-17 PWB top (general placement) Nokia Corporation Page 12 Confidential Issue 1 04/2003...

  • Page 13: Tuning Description

    UEM (200) and UPP (D400) has expired. Watchdog is used by the phone for fault detection. • Check voltage regulators for correct voltage. If voltage is low or not present, check for shorts. Nokia Corporation Issue 1 04/2003 Confidential Page 13...

  • Page 14: Test 2 Bb Flash Phone

    Local PC com port selection)>Bit Rate to 115200>COMBOXDEF_MEDIA to FBUS; then Apply. 3 Check that Prommer Box FPS-8 is correctly configured. In Phoenix, go to Flash- ing>FPS-8/FPS-8C Maintenance. Make sure current version is A2.10. Nokia Corporation Page 14 Confidential Issue 1 04/2003...

  • Page 15: Test 5 St Dbus

    File Selection, choose Image File “set”. In correct directory where you store your flash files (usually programs, then Nokia, Phoenix, Flash) select correct Flash SW xxxxxxx.nep (if not sure what correct SW to use, file name should match SW in a known good phone.

  • Page 16: Test 7 St Aux Da

    CodexRx register and then read the data from the Codec Tx register. Explanation of Result Pass or Fail Manual Verification In Phoenix, put phone in Local Mode. Next, BB Self Tests - select Nokia Corporation Page 16 Confidential Issue 1 04/2003...

  • Page 17: Test 9 St Sleeepx

    In Phoenix, put phone in Local Mode. Next, BB Self Tests - select ST_TX_IDP_LOOP_TEST, then Run. Troubleshooting Connections tested are CBUS see Test 6, Connections tested at UPP: RXID (pad L4), TXID Nokia Corporation Issue 1 04/2003 Confidential Page 17...

  • Page 18: Test 11 St Tx Q Dp

    Troubleshooting Connections tested are UPP only. If this test passes and Test 11 fails, then the problem is in UEM. If both Test 11 and Test 12 fail, the problem is in UPP. Nokia Corporation Page 18 Confidential Issue 1 04/2003...

  • Page 19: Test 13 St Sleep Clock

    2.7v on VR5 at C710, and on VR7 at C708, and check for 1.8v on VIO. Next check if CLK 19M2_B (C512) the reference frequency for PLL is at 19.2MHz. If no fault is found, replace N701 (Batman). Nokia Corporation Issue 1 04/2003 Confidential...

  • Page 20: Test 15 St Robin Vhf Pll Cell

    Using Main Mode: turn on the Cell CDMA TX with channel set to 384, and turn on IS95 modulation using CDMA control. Using the PDM window, set: TX_IF_AGC to -100 TX_RF_AGC to -512 PA_AGC to +511 Nokia Corporation Page 20 Confidential Issue 1 04/2003...

  • Page 21: Test 17 Sn Cell Pa Temp

    The phone reports the ADC voltage value of the thermistor, and it should be within the limits. Manual Verification Ensure the phone is cool by letting it cool down for several minutes, and retest, keeping Nokia Corporation Issue 1 04/2003 Confidential Page 21...

  • Page 22: Test 18 Sn Cell Rx Bb Filter

    TP45-TP48 and supporting components at Batman IC. Test 22 SN AMPS RX BB Filter Description This is one of the phone’s self-tunings, which tunes the lowpass filter in the Batman IC Nokia Corporation Page 22 Confidential Issue 1 04/2003...

  • Page 23: Test 23 And 24 Sn Amps Rx Dc Offset I (Or Q)

    In Phoenix, set phone to local mode then EM Calibration. Press read from phone. Gain factor is 0.0001 mV/bit, Offset is measured in mV. Troubleshooting Check the BSI components X101, C109, C230, R206, and R203. Check that VFLASH volt- Nokia Corporation Issue 1 04/2003 Confidential Page 23...

  • Page 24: Test 28 Bb Cal Bsi Gain

    Test 30 BB Cal VBAT Offset Description This baseband calibration teaches the ADC what two different voltage inputs look like. Lower known voltage input is 3.1 Vdc and higher input is 4.2 Vdc. This voltage-scaler cir- Nokia Corporation Page 24 Confidential Issue 1 04/2003...

  • Page 25: Test 31 Bb Cal Vchar Gain

    The offset is a result of the two current limit values and the global value determined in Test 26 and used to calculate VCHAR offset. Manual Verification: In Phoenix set phone to local mode then EM Calibration. Press read from phone. Nokia Corporation Issue 1 04/2003 Confidential Page 25...

  • Page 26: Test 33 Bb Cal Ichar Gain

    For production the VCHAR voltage is sent to galvanic pads on the PWB. Check current sensing resistor R200 then D200, where the charging circuitry resides. Remember that this gain factor is determined using Test 26 as a reference, make sure it was within limits also. Nokia Corporation Page 26 Confidential Issue 1 04/2003...

  • Page 27: Test 35 Bb Cal Btemp Gain

    This test turns on the AMPS transmitter and measures current of the whole phone, which can detect some assembly errors. Explanation of Result: Current in milliamps. Manual Verification: Set the phone to local mode and turn on the AMPS transmitter PL5. Set the PDM values Nokia Corporation Issue 1 04/2003 Confidential Page 27...

  • Page 28: Test 39 Tn Vctcxo Frequency Limits [-150, 150]

    1 of G501, for a voltage between 0.4 and 2.7 v. If the voltages are correct, and soldering of all G501 terminals is correct, replace G501. If 19.2 MHz tone Nokia Corporation Page 28 Confidential...

  • Page 29: Test 40 - 44 Tn Tx If Agc Cell Po (0) [Or (1), (2), (3), (4), (5), (6)]

    PDM window under the RF menu. Change the TX_IF_AGC to the settings in the following table, and measure the TX power levels, checking to see that they are within the specified range. Nokia Corporation Issue 1 04/2003 Confidential...

  • Page 30: Test 45 Tn Tx If 11 Dbm Set Cell Po

    +11 dBm Explanation of Result: The result is a power in dBm. A perfect result would be +11.00 dBm. Manual Verification: See previous tuning. Troubleshooting: See previous tuning Nokia Corporation Page 30 Confidential Issue 1 04/2003...

  • Page 31: Test 46 - 51 Tn Pa Agc Cal Cell Po (0) [Or (1), (2), (3), (4), Or (5)]

    PDM for PA AGC +218 decimal 10.5 - 11.5 Po(5) 7.0 - 13.0 Po(4) -202 4.0 - 11.5 Po(3) -268 2.0 - 10.5 Po(2) -329 1.0 - 8.5 Po(1) -366 -1.0 - 6.5 Po(0) Nokia Corporation Issue 1 04/2003 Confidential Page 31...

  • Page 32: Test 52 - 56 Tn Tx Rf Agc Cell Po (0) [Or (1), (2), (3), Or (4)]

    -22 decimal -10.5 - 3.5 Po(2) +418 -23.5 - -7.0 Po(1) +511 -41.0 - -21.0 Po(0) Troubleshooting: Check Robin (N601) according to Table 2 and Table 3. Also check D400, which generates Nokia Corporation Page 32 Confidential Issue 1 04/2003...

  • Page 33: Test 61 - 67 Tn Tx Gain Comp Cell Po Md (Or Lo, Lm, Ml, Mh, Hm, Or Hi)

    If -8 dBm cannot be attained, troubleshoot Cell TX as described in the beginning of this document. Test 68 TN G_Offset Cell MD Description: See description of previous tuning. This step reports G_Offset. Nokia Corporation Issue 1 04/2003 Confidential Page 33...

  • Page 34: Test 69 - 75 Tn Tx Limiting Po Is95 Cell, Low Channel (Or Lowmid, Midlow, Mid, Midhigh, Highmid Or High Channel)

    832.35 MHz 24.0 to 24.2 dBm 836.52 MHz 24.4 to 24.6 dBm MidHigh 840.36 MHz 24.3 to 24.5 dBm HighMid 844.80 MHz 24.2 to 24.4 dBm High 848.97 MHz 24.1 to 24.3 dBm Nokia Corporation Page 34 Confidential Issue 1 04/2003...

  • Page 35: Test 76 - 82 Tn Tx Limiting Po Is2K Cell: Low Channel (Or Lowmid, Midlow, Mid, Midhigh, Highmid Or High Channel)

    If the maximum cannot be reached, either a component in the transmitter has too much loss, or not enough gain. Troubleshoot the Cell transmitter Table 2, with the phone set to the same channel as the failed channel. Nokia Corporation Issue 1 04/2003 Confidential...

  • Page 36: Test 100 -101 Ts Acpr Cell - High(Low) Offset

    521, HighMid= 660, High=799. The algorithm then interpolates between the measured points for frequency compensation. Explanation of Result: The result is measured transmit power in dBm for power level 0 on each of the seven channels. Nokia Corporation Page 36 Confidential Issue 1 04/2003...

  • Page 37: Tests 111 - 115 Tn Amps Pl3 (Or 4, 5, 6, Or 7) Po

    Measure the delta between the center and offset tones. If the delta is 35 dB or greater, the phone passes. If less than 35 dB, vary the "I" DC offset on the "values" line in Nokia Corporation Issue 1 04/2003...

  • Page 38: Test 119 Tn Tx Dc Offset Reference Power

    Explanation of Result: The reported result is the power in dBm of the tone that is offset 20 kHz from the carrier, as measured on the antenna connector, with the nominal DC offsets applied. Nokia Corporation Page 38 Confidential Issue 1 04/2003...

  • Page 39: Test 121 - 123 Tn Rx If Agc Rxdbctr (0) [Or (1) Or (2)]

    RSSI should be within +/- 2 dB of the actual power in dBm on the RF connector. Table 3a lists limits and typical values. The AGC will try to keep the Nokia Corporation Issue 1 04/2003...

  • Page 40: Test 178 - 179 Tn Lna Amps Lowgain (Or Highgain)

    10 kHz offset from the center frequency of the channel that is being tuned. For Cell set it to -95 dBm. Record RxdBCtr, which is returned from Phoenix in the lowest field in the RF Tuning window. Channel Cell LowMid Nokia Corporation Page 40 Confidential Issue 1 04/2003...

  • Page 41: Final Ui Test: Rho

    CDMA, but is used in AMPS. A low level signal (typically at sensitivity level of - 116.0 dBm) is injected into the receiver, and SINAD is read off the call box, with 12 dB as the passing limit. Check Tables 9-11. Nokia Corporation Issue 1 04/2003 Confidential...

  • Page 42: Probing/Troubleshooting Tables

    Table 1: Transmit Output Powers and Associated AGC PDM values and voltages Channel 384 (Cell) fc= 836.52 MHz AMPS Probed RF RF power TX RF AGC TX IF AGC power on PA AGC on RF Nokia Corporation Page 42 Confidential Issue 1 04/2003...
  • Page 43 Robin Tx I/Q input from UEM TP1a, TP1b, TP1c Check with Osc Check that UEM and Robin are sol- and TP1d probe for Input, dered correctly. check also for same dc offset on each point. Nokia Corporation Issue 1 04/2003 Confidential Page 43...
  • Page 44 Loss=1-3 dB Z803, L750, N750, X814. If no cable nector (X814) in. here not recom- through duplexer connected to X814 then additionally mend X811. unless necessary, best to measure on RF connector Nokia Corporation Page 44 Confidential Issue 1 04/2003...
  • Page 45 High for TX TP16 High=2.6v N601, C649, N603 (pin 4) on, Low for Low=0v TX off VREFRF02 fixed TP17 1.35v D200, C606, N601 IREF_CEL variable TP19 2.95v PA_AGC, C811, N801, N601, R630, R621. Nokia Corporation Issue 1 04/2003 Confidential Page 45...

  • Page 46: Vco Probing

    Check that clock is present at TP26 at channel 384 amplitude of 19.2 Mhz C519. If not present proceed N507 VCTCXO input -28.0 dBm to Table 6. CLK19M2_R at 19.2 MHz TP29 Check C513 Nokia Corporation Page 46 Confidential Issue 1 04/2003...
  • Page 47 1370 mV 19.19 MHz 19.199515 MHz -512 1780 mV 19.21 MHz 19.199735 MHz 2.2 V 19.23 MHz 19.199965 MHz +512 2.65 V 19.23 MHz 19.200000 MHz +1023 3.1 V 19.23 MHz 19.200220 MHz Nokia Corporation Issue 1 04/2003 Confidential Page 47...

  • Page 48: Receiver Probing

    RF AGC status LNA switch point.), Z751, window to C755, L752, C757, R764, monitor state.), C753, R765, C750 and Loss=-3 to –5 voltage VRX at N750 dB for low gain pin13(2.78 Vdc). Nokia Corporation Page 48 Confidential Issue 1 04/2003...
  • Page 49 AMPS RX IF filter (Z752) TP43 You will meas- Z752, L765, C777, L766, C778, L768, L767, out= TP44 ure usually –10 C779, N701 (VR5, VR7, VIO) Batman (N701) in= dBm less than previous test point. Nokia Corporation Issue 1 04/2003 Confidential Page 49...
  • Page 50 Check Z753, C784, L764, C781, L762, CDMA RX IF filter(Z753) if matching compo- C783, C786, C761, L754, C782 and C767 nents are correct also ensure dc voltage Vrx is present at L754. Nokia Corporation Page 50 Confidential Issue 1 04/2003...

  • Page 51: Rf Power Supplies

    Local Mode: Troubleshooting - DSP/MCU - Phone Control - Phone State - Local -- Exe- cute Normal Mode: Troubleshooting - DSP/MCU - Phone Control - Phone State - Normal -- Execute Reset Phone: Troubleshooting - DSP/MCU - Phone Control - Phone State - Reset Nokia Corporation Issue 1 04/2003 Confidential Page 51...
  • Page 52 LED's Test: Set Local Mode First, Testing/Troubleshooting - Baseband Testing - Display Test, Select Keypad and/or LCD Lights. Keyboard Test: Set Local Mode First, Testing/Troubleshooting - Baseband Testing - Key- board Test, Press key on Phone and look at result. Nokia Corporation Page 52 Confidential Issue 1 04/2003...

  • Page 53: To Turn Off Cell Cdma Transmitter

    Set button in the upper right-hand corner. Next, turn on the modulation by opening the CDMA Control dialog box under the DSP menu. This dialog box is shown next. Nokia Corporation Issue 1 04/2003 Confidential Page 53...

  • Page 54: To Turn On The Amps Transmitter

    Select the desired channel and power level, click Transmitter ON, then click the Execute button. The reason why this is a temporary solution is because in some instances, the AFC and AGC are not disabled, with the results that the signal will not be stable in fre- Nokia Corporation Page 54 Confidential...

  • Page 55: To Turn On The Receiver Only, In Any Mode

    To turn on the receiver only, in any mode To turn on the receiver only, use the Main Mode dialog box as shown previously, high- light RX. In the Band field, choose Cell CDMA. Nokia Corporation Issue 1 04/2003 Confidential...

  • Page 56: To Verify A Single, Manual Tuning

    The values are in decimal. Then click Set. Alternatively, you can click the up and down arrows next to the value fields below the sliders, which will increase or decrease the value one step at a time. If you do this, you do not have to click Set. Nokia Corporation Page 56 Confidential...

  • Page 57: To Read Tuning Values From The Phone

    The AGC PDM values are shown beside their respective variable gain amplifier in the block diagram. The TX AGC PDMs are, as shown in the fol- lowing diagram from right to left, IF_AGC, RF_AGC, PA_AGC. Nokia Corporation Issue 1 04/2003 Confidential...

  • Page 58: To Load A Prl Into The Phone

    At the bottom of the dialog box, a status message will indicate if the file was loaded correctly or not. To change between Normal and Local modes To make a call, the phone should be in normal mode. In normal mode, the phone soft- Nokia Corporation Page 58 Confidential Issue 1 04/2003...

  • Page 59: To Add A Baseband To The Amps Transmitter

    (delta between center tone and tone that is offset 20 kHz) is measured. If it passes, it is reported in that tuning. If not, the DC offsets are adjusted until it passes, and the passing value is reported. Nokia Corporation Issue 1 04/2003 Confidential...

  • Page 60: Appendix B: Definitions

    Power1 and power2 are in linear units such as W or mW. dBm: A unit for an absolute power level. Formula is 10log(power in mW/1 mW). LNA: Low Noise Amplifier Nokia Corporation Page 60 Confidential...
  • Page 61 PLL: Phase Locked Loop. Used in Synthesizer circuits to generate an LO. PPM: part per million RSSI: Received Signal Strength Indicator. Nokia Corporation Issue 1 04/2003 Confidential Page 61...

  • Page 62: Radio Portion Of Phone Front Panel

    RH-17 Troubleshooting — RF CCS Technical Documentation Radio Portion of Phone Front Panel Nokia Corporation Page 62 Confidential Issue 1 04/2003...
  • Page 63 RH-17 CCS Technical Documentation Troubleshooting — RF Measure 2.7V TP23 TP21 TP25 TP26 TP22 TP24 TP29 TP30 TP30 TP31 Nokia Corporation Issue 1 04/2003 Confidential Page 63...

  • Page 64: Robin View

    RH-17 Troubleshooting — RF CCS Technical Documentation Robin View TP2a TP2b TP20 TP14 TP27 TP15 TP16 TP17 Nokia Corporation Page 64 Confidential Issue 1 04/2003...

  • Page 65: Alfred View

    RH-17 CCS Technical Documentation Troubleshooting — RF Alfred View TP35 TP38 TP36 TP53 TP49 TP45 TP37 TP39 TP46 TP40 TP47 TP52 TP48 TP45a TP43 TP45b TP44 Nokia Corporation Issue 1 04/2003 Confidential Page 65...
  • Page 66 RH-17 Troubleshooting — RF CCS Technical Documentation TP18 (pin 1) Vbat on N801. TP19 (pin3) Iref on N801 TP34 Pdet_power TP33 Pdet_Voltage TP19 Iref_Cell Nokia Corporation Page 66 Confidential Issue 1 04/2003...

  • Page 67: Back Panel Test Points

    RH-17 CCS Technical Documentation Troubleshooting — RF Back Panel test points TP1a TP1b TP1c TP1d Nokia Corporation Issue 1 04/2003 Confidential Page 67...
  • Page 68 RH-17 Troubleshooting — RF CCS Technical Documentation TP12 TP51 TP10 TP11 TP13 Nokia Corporation Page 68 Confidential Issue 1 04/2003...

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