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Nokia Customer Care RH-37 Series Transceivers
6(b) - RF Troubleshooting Instructions
Issue 1 07/04
2004 Nokia Corporation Company Confidential
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RH-37 6(b) - RF Troubleshooting Instructions
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Nokia Customer Care Table of Contents
RH-37 6(b) - RF Troubleshooting Instructions
Page No General Information on RF Troubleshooting.................................................................................... 5 Test environment .................................................................................................................................. 5 Test conditions ...................................................................................................................................... 6 Receiver Verification and Troubleshooting ...................................................................................... 7 General instructions for RX troubleshooting ................................................................................ 7 Measuring RX I/Q signals using RSSI reading .............................................................................. 7 Measuring RX performance using SNR measurement ............................................................ 9 Measuring front-end power levels using spectrum analyzer............................................. 10 Measuring analogue RX I/Q signals using oscilloscope....................................................... 11 Fault finding chart of the receiver ................................................................................................12 Transmitter ............................................................................................................................................. 19 General instructions for TX troubleshooting ..............................................................................19 GSM900 transmitter ..........................................................................................................................19 General instructions for GSM TX troubleshooting ................................................................ 19 Fault finding chart for GSM900 transmitter .......................................................................... 22 GSM1800 transmitter .......................................................................................................................24 General instructions for GSM1800 TX troubleshooting ...................................................... 24 Fault finding chart for GSM1800 transmitter........................................................................ 26 GSM1900 transmitter .......................................................................................................................28 General instructions for GSM1900 TX troubleshooting ...................................................... 28 Fault finding chart for GSM1900 transmitter........................................................................ 30 Synthesizer ............................................................................................................................................. 33 General instructions for synthesizer troubleshooting ..............................................................33 Checking synthesizer operation .....................................................................................................33 Fault finding chart for PLL synthesizer ........................................................................................36 Frequency tables .................................................................................................................................38 GSM900 (including EGSM900) ................................................................................................... 38 GSM1800 .......................................................................................................................................... 39 GSM1900 .......................................................................................................................................... 41 DC Supply Voltage Check ................................................................................................................... 43
Appendix 6A: Test Points..................................................................................................... 45 Receiver test points ...........................................................................................................................47 Transmitter test points ......................................................................................................................49 Synthesizer test points ......................................................................................................................52
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RH-37 6(b) - RF Troubleshooting Instructions
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RH-37 6(b) - RF Troubleshooting Instructions
General Information on RF Troubleshooting
Notes: Several bills of material (BOM): There are two different kinds of VCOs, VCTXOs, RF-PAs, SAW-filters and Antenna Switches (ASM) assembled. They may only be replaced with the same type as the original component (from the same manufacturer). Phoenix version: In this document there are example measurements being depicted with pictures of AMS-Phoenix, version A 2004.06.1.69. In later versions pictures of menus and windows may look differently. Layout version: The drawings of test points and component placement in this version of the document are taken from build B4.0 layout (1cna_41). If you use the document for newer layout versions, make sure to use the corresponding assembly and test point drawings.
Test environment
It is assumed, that the phones are disassembled and tested with a repair jig MJ-22R. The following measurements have to be done for repairing the phone boards: · RF measurements shall be done using a spectrum analyzer together with a highfrequency probe. Note that the signal will be significantly attenuated. Correct attenuation can be checked using a "good" phone board for example. LF (low frequency) and DC measurements shall be carried out with an oscilloscope together with a 10:1 probe. For receiver measurements, a signal generator specified for frequencies up to 2000 MHz is required. The signal generator is connected to the antenna port of the repair jig. Most of the radio communication testers, like CMU200, can be used as a signal generator, but make sure to have a continuous (CW) signal without modulation for alignment purposes. Transmitter output level measurements shall be done with a power meter which is connected to the antenna port of the repair jig.
· ·
·
Always make sure that the measurement set-up is calibrated when measuring RF parameters at the antenna port. Remember to put the correct losses of the module repair jig and the connecting cable in Phoenix or in the set-up programs of the RF generators when realigning the phone. Apart from key-components described in this document, there are a lot of discrete components (resistors, inductors and capacitors) for which troubleshooting has to be done by checking its proper soldering and complete assembly on the PWB. Capacitors and resistors can be checked by means of an ohm-meter, but be aware in-circuit measurements should be evaluated carefully.
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RH-37 6(b) - RF Troubleshooting Instructions
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Test conditions
Rx tuning of the 26 MHz reference oscillator (VCTCXO) is temperature sensitive because of the estimations of and . According to the Production Test Specification DCS02294-EN-0.5, the ambient temperature has to be within a temperature range of 22°C to 28°C. Most RF semiconductors are static discharge sensitive. ESD protection must be taken into account during repair (ground straps and ESD soldering irons). The RF ASIC Helgo is moisture sensitive. Therefore, the ASIC must be pre-baked prior to soldering.
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RH-37 6(b) - RF Troubleshooting Instructions
Receiver Verification and Troubleshooting
General instructions for RX troubleshooting
Connect the phone to a PC, which has Phoenix Service Software and a dongle installed, using either · · · repair jig and DAU-9S (RS232) cable or repair jig and XCS-4 cable via FPS-8 Flash Box or DAU-9T cable (RS232).
Connect the phone to a power supply (DC voltage: 3.6V, max. current: 3A) and an RF signal generator. Switch the phone on. Start Phoenix Service Software and open FBUS connection. Select Scan Product Ctrl-R
and wait until the phone information (RH-37) is shown in the lower right corner of the screen. Follow the instructions below.
Measuring RX I/Q signals using RSSI reading
Start Phoenix Service Software and open FBUS connection. Select Scan Product Ctrl-R
Wait until the phone information is shown in the lower right corner of the screen. Set the operating mode to local mode Select Testing RF Controls Select Band Active unit Operation mode RX/TX Channel Select Testing T F
GSM 900 or GSM1800 or GSM1900 RX Burst 37 or 700 or 661 T
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RH-37 6(b) - RF Troubleshooting Instructions RSSI reading R
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In the RSSI Reading window, the shall be set on Sum vector and the on Continuous. The set up should now look like this: (The example below shows a screen shot in GSM900!)
Make the following settings on your signal generator: Frequencies: · · · GSM 900: 942.46771 MHz (channel 37+ 67.710 kHz offset) GSM 1800: 842.86771 MHz (channel 700 + 67.710 kHz offset) GSM 1900: 1960.06771 MHz (channel 661+ 67.710 kHz offset)
RF power level: · 80 dBm @ the antenna connector of the phone/ test jig (remembering to compensate for the cable and jig attenuation).
Click on in RSSI reading. The resulting RSSI level shall be 80 dBm +/ 0.5 dB in each band.
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RH-37 6(b) - RF Troubleshooting Instructions
Measuring RX performance using SNR measurement Start Phoenix Service Software and open FBUS connection. Select Scan Product Ctrl-R
Wait until the phone information is shown in the lower right corner of the screen. Set operating mode to . Select Testing RF Controls Select Band Active unit Operation mode RX/TX Channel Select Testing SNR Measurement Select Press Measuring mode Start T F
GSM 900 or GSM1800 or GSM1900 RX Burst 37 or 700 or 661 T M
Fast SNR (Radio Button)
The window pops up informing on frequency and power level of the signal generator to be set. Follow the command . Press and the window will close. Read the SNR result from the window SNR Measurement. The value shall exceed: · · · GSM 900: > 20 dB GSM 1800: > 18 dB GSM 1900: > 18 dB
The set up should now look like this:
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RH-37 6(b) - RF Troubleshooting Instructions (The example below shows a screen shot in GSM900!)
Nokia Customer Care
Choose the remaining GSM bands and measure accordingly the procedure described above. Measuring front-end power levels using spectrum analyzer Spectrum analyzer (SA) level values depend on the probe type and shall be verified by a properly working phone sample. The levels that are given in this document are measured with a resistive probe (50 Ohm semi-rigid cable). Start Phoenix Service Software and open FBUS connection. Select Scan Product Ctrl-R
Wait until the phone information is shown in the lower right corner of the screen. Set to . Select Testing RF Controls Select Band Active unit Operation mode T F
GSM 900 or GSM1800 or GSM1900 RX Continuous
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RH-37 6(b) - RF Troubleshooting Instructions 37 or 700 or 661
Please refer to the fault finding chart and Appendix for proper levels at different test points. Measuring analogue RX I/Q signals using oscilloscope Measuring with an oscilloscope RX I and RX Q signals on the test points respectively is recommended only if the RSSI reading does not provide enough information. Input level = -60dBm. Start Phoenix Service Software and open FBUS connection. Select Scan Product Ctrl-R
Wait until phone information is shown in the lower right corner of the screen. Set operating mode to . Select Testing RF Controls Wait until the RF Controls window pops up. Select Band Active unit Operation mode RX/TX Channel AGC GSM 900 or GSM1800 or GSM1900 RX continuous 37 or 700 or 661 10 T F
The following picture should be displayed on an oscilloscope's screen if the receiver is working properly:
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Signal amplitude DC offset Frequency
1.40Vpp 1.28V as the offset is floating, switch to the operating mode in Phoenix and read the DC offset 67kHz
Fault finding chart of the receiver
During fault finding, the calibration procedure is used to find out, whether all bands are affected (error in common part of the Rx chain) or only one band (error in a Rx part of the failed band). Take care not to save calibration values to the phone memory, which are out of limits. Find the error first and repair it. When a defective phone has been calibrated, a possible error in RX front-end might be masked. In that case, one can get a reasonable RSSI reading, although the front-end shows excessive losses. If it is not sure that incorrect re-calibration has been made, following steps shall be carried out: · · Check if AGC calibration is within limits. Check if SNR reading is o.k.
Use an oscilloscope to check levels of "RXI" and "RXQ". The RF ASIC generates only single ended I and Q signals (RXI, RXQ). As the A/D converter in UEM requires two differential signals, an artificial mid voltage is generated from Page 12 Nokia Corporation Issue 1 07/04
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RH-37 6(b) - RF Troubleshooting Instructions
VrefRF02. The phone layout has dedicated test points for the analogue RX I and Q signals (J512, J513). The BB part is used to measure those signals by means of RSSI reading. This works only if correct calibration has been carried out in production. RSSIreading [dBm] = 20log(UBB/ULSB) - AGCcalibrated In order to check the levels and frequencies of RF signals, the following probe can be used (note that only the core lead contacts the test point, the shielding of the coaxial cable does not contact GND during the measurement):
Connect this probe via a coaxial cable and a DC block to a spectrum analyzer. The DC block is important to protect the spectrum analyzer from DC levels, which superpose the RF signal at several test points. If both RX and TX path seem to be faulty, it has to be checked if the synthesizer is working.
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Make sure that Synthesizer is working
No
see Synthesizer Fault Finding Tree
Receiver Fault Finding Tree part 1
Yes
= To be done in all three bands.
All 3 bands
Phoenix:
Phone: Active Unit: Op. Mode: Rx/Tx channel: local mode Rx Burst default (mid)
Open RF Controls:
Signal Generator:
Level: Frequency: 80dBm calculated from Phoenix + 67.71kHz
Phoenix: Open RSSI reading Check RSSI Level = -80dBm No
Yes
Selected band is working and calibrated. Are all 3 bands measured? Yes
No
next band
Yes Execute Rx Calibration in selected band, refer to chapter 9.2.1 Are calibration results within limits? No Are all 3 bands measured? Yes
Receiver Fault Finding Tree part 2
Rx chain is functional and calibrated
No
Are all 3 bands defective? Yes
No
Continue with single band fault finding.
Oscilloscope: Check supply voltages of RF ASIC: VR4 = 2.8V ? (TP: VR4) Yes Oscilloscope: Check supply voltages of RF ASIC: VR6 = 2.8V ? (TP:VR6) Yes
No
Check supply filter components (C2233, C7519, C7520) and UEM
Receiver Fault Finding Tree part 3
No
Check supply filter components (C2231, C7521) and UEM
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RH-37 6(b) - RF Troubleshooting Instructions
Oscilloscope : Check reference voltages of RF part: VrefRF01 = 1.35V ? (TP: VrefRF01*) Yes Oscilloscope : Check reference voltages of RF part: VrefRF02 = 1.35V ? (TPs: VrefRF02* and VrefRF02**) Yes
Phoenix:
Phone: local mode Rx Continuous default (mid) 14
No
Check supply filter components (R7511, C7524) and UEM
Receiver Fault Finding Tree part 4
No
Check supply filter components (R2900, R2901, C2900, C2901) and UEM
RF Controls:
Active Unit: Op. Mode: Rx/Tx channel: AGC:
Receiver Fault Finding Tree part 5
Signal Generator:
To be tuned that input power at spectrum analyzer: 60dBm (power at probe: Pref = approx. -63 dBm) Frequency: calculated from Phoenix offset: 67.71kHz
Spectrum Analyzer: Check Rx/Tx Switch (Diplexer)
GSM900 GSM1800 GSM1900 output Rx1 output Rx2 output Rx3
1)
Depending on selected band, check level at TPs: Pref -1.5dB ? Pref -2.0dB ? Pref -2.5dB ?
No
Change Z7800
Yes
Note : RF levels are dependent on RF probe and have to be validated with a known good sample.
1)
Oscilloscope: RX IQ levels ok (TPs: RXI, RXQ) ? Yes Oscilloscope: RF-BB serial interface ok?
(TPs: RFBusData, RFBusClk, RFBusEna1)
No
Change RF ASIC (Helgo)
Receiver Fault Finding Tree part 6
No
BB error: Check UPP
Yes
Change RF ASIC (Helgo)
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RH-37 6(b) - RF Troubleshooting Instructions
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Single band fault finding Select faulty band in Phoenix and continue measurements on dedicated Rx part.
Phoenix: open SNR Measurement
Meas. Mode: Fast SNR
Receiver Fault Finding Tree part 7
Press Measure. Signal Generator:
Level: Frequency: 92dBm calculated from Phoenix
Phoenix: SNR measurement ok? (SNR > 18.37dB)? No
Yes
Front end is ok. Phoenix:
Phone: local mode Rx Continuous default (mid) 10
RF Controls:
Active Unit: Op. Mode: Rx/Tx channel: AGC:
Signal Generator:
Level: Frequency: 60dBm calculated from Phoenix offset: 67.71kHz
Continue with Rx Fault Finding part 6.
Phoenix:
Phone: local mode Rx Continuous default (mid) 14
RF Controls:
Active Unit: Op. Mode: Rx/Tx channel: AGC:
Receiver Fault Finding Tree part 8
Signal Generator:
To be tuned that input power at spectrum analyser: 60dBm power at probe: Pref =approx. -63dBm) Frequency: calculated from Phoenix offset: 67.71kHz
Spectrum Analyzer:
Center Freq: RBW
1)
Note : RF levels are dependent on RF probe and have to be validated with a known good sample.
1)
calculated from Phoenix 20kHz
Check Rx SAW filter and matching network of selected band:
GSM900 TPs: INM_G_RX / INP_G_RX both output levels > Pref -3.5dB ? GSM1800 TPs: INM_D_RX / INP_D_RX both output levels > Pref -6dB ?
No
Change Rx SAW filters (Z7802, Z7803) or component(s) of matching network depending on selected band
Yes
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RH-37 6(b) - RF Troubleshooting Instructions
No If selected band = GSM1900 Yes Spectrum Analyzer: Check SAW filter Z7801:
TP: OUT-Z7801
1)
Yes
Receiver Fault Finding Tree part 9
No
Change Z7801
Output signal > Pref - 3.5dB No Yes Spectrum Analyzer: Check external LNA V7800:
TP: OUT-V7800
1)
No
Output signal > Pref +14dB Yes
Oscilloscope: Check voltages for V7800: Voltage at C7802 = 2.5V ? Voltage at C7800 = 0V ? Yes
No
Check supply filter components around V7800 and RF ASIC
1) Spectrum Analyzer: Check balun T7800 and matching network:
No
Change T7800
TPs: INM_P_RX / INP_P_RX
Both output signals > Pref +12dB Yes RF ASIC N7500 seems to be defective. Exchange N7500.
Note : RF levels are dependent on RF probe and have to be validated with a known good sample.
1)
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Channel select filter fault finding
Continue measurement only when channel select filter calibration failed
Make sure that Synthesizer is working and supply voltages of RF ASIC are ok
Receiver Fault Finding Tree part 10
Phoenix:
Phone: local mode Rx Burst default (mid) 14
RF Controls:
Active Unit: Op. Mode: Rx/Tx channel: AGC:
Signal Generator:
Level: Frequency: 60dBm 942.4MHz Offset: 67.71kHz
Oscilloscope: RF-BB filter signals ok?
TPs: CM_F_Q & CM_F_I CM_DTOS_Q & CM_DTOS_I
No
Re-solder capacitor array C7523
Re-calibrate Channel Select Filter Calibration ok ? Yes Yes No Change RF ASIC (Helgo) Repair finished Make following tunings/calibrations
Tx power level tuning Tx IQ tuning Rx calibration Rx Band Filter Response Calib.
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RH-37 6(b) - RF Troubleshooting Instructions
Transmitter
General instructions for TX troubleshooting
Connect the phone to a PC, which has Phoenix Service Software and a dongle installed, using either · · · repair jig and DAU-9S (RS232) cable or repair jig and XCS-4 cable via FPS-8 Flash Box or DAU-9T cable (RS232)
Connect the phone to a power supply (DC voltage of 3.6V) and switch the phone on. The value of the DC voltage of 3.6V at the phone battery connector is crucial. Connect an RF cable between the test jig and the measurement equipment (GSM test equipment, power meter, spectrum analyzer, or similar). Make use of an adequate attenuator at the input of your measurement equipment (10dB to 20dB are recommended for a spectrum analyzer or a power meter). Additionally, a DC block is recommended. Assure not to overload or destroy the equipment. It is strongly recommended to use TXP as external trigger for all TX tunings. External triggering gives the following advantages: · · · trigger for spectrum analyzer (gated sweep) trigger for oscilloscope trigger for power meter (avoid exchanging of attenuator and getting better accuracy in power measurements)
Start Phoenix Service Software and open FBUS connection: Select Scan Product Ctrl-R
and wait until the phone information is shown in the lower right corner of the screen. Follow the instructions in the chapters below.
GSM900 transmitter
The GSM900 chapters apply only for RH-37 (EU variant). General instructions for GSM TX troubleshooting Start the preparations as described in chapter "General instructions for TX troubleshooting".
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RH-37 6(b) - RF Troubleshooting Instructions GMSK Set operating mode to local mode. Select Testing RF Controls
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Wait until the RF Controls window pops up Select Band Active unit Operation mode RX/TX Channel TX Power Level TX Data Type Edge The setup should now look like this: GSM 900 TX Burst 37 10 Random Off
Now the measurement equipment should detect the following output signal of the phone: Page 20 Nokia Corporation Issue 1 07/04
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RH-37 6(b) - RF Troubleshooting Instructions
If this is not the case, go to the GMSK fault finding chart for the GSM900 transmitter. EDGE Set operating mode to local mode. Select Testing RF Controls
Wait until the RF Controls window pops up. Select Band Active unit Operation mode RX/TX Channel TX Power Level TX Data Type Edge The setup should now look like this: GSM 900 TX Burst 37 10 All1 On
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Now the measurement equipment should detect the following output signal of the phone: Pout = +24.5 dBm @ 897.4 MHz If this is not the case, go to the EDGE fault finding chart for GSM900 transmitter. Fault finding chart for GSM900 transmitter In the following, it is assumed that the TXP signal is used as trigger signal. For that, a TXP test point is provided.
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Use Phoenix to select TX_Data Type: Random TX Power Level: 10 Ch37 Ensure Vbatt=3.6 V Yes Oscilloscope C7711 R7511 C7512 TXP testpoint C7517 R7516 Yes Oscilloscope C7529
RH-37 6(b) - RF Troubleshooting Instructions
Mode
VREF01 VR2 TXP VR5 VR3
V = 0 Volt Vdc = 1.35 Volt Vdc = 2.78 Volt V = 1.8 Volt Vdc = 2.78 Volt Vdc = 2.78 Volt
No
Check Baseband
TXIOUTP
C7529
TXIOUTN
C7530
TXQOUTP
C7530
TXQOUTN
67kHz Vac = 0.45 Vpp, Vdc = 1.2 V 67kHz Vac = 0.45 Vpp, Vdc = 1.2 V 67kHz Vac = 0.45 Vpp, Vdc = 1.2 V 67kHz Vac = 0.45 Vpp, Vdc = 1.2 V
No
Check
Baseband
Yes Oscilloscope C7701 VC1 VC2 VC3 R7713 Yes Spectrum analyzer Z7700 out, R7704 in
VTXB_900 CONT1 CONT2 CONT3 VPCTRL_90 0
V = 2.78 Volt V = 0 Volt V = 0 Volt V = 2.7 Volt V = 1.17 Volt
No
Check: Helgo Serial Interface Helgo
No RFin_850/ 900 P>= 2 dBm, 897.4MHz Compare with good sample
Check EGSM TX SAW Filter Helgo Synthesizer
Yes Spectrum analyzer Z7800 TX1 (PA N7700 RFOut_850/900) Power = +24.3 dBm, 897.4 MHz Yes Spectrum analyzer RF@Test-Jig Pout = +23 dBm, 897.4 MHz Yes GSM900 TX OK No Check PA N7700 Check Power Loop (TXC, Vpctrl900, DET)
Check No Antenna Switch (Z7800)
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RH-37 6(b) - RF Troubleshooting Instructions EDGE Ensure that GMSK is ok.
Use Phoenix to select TX_Data Type: All 1 EDGE: On TX Power Level: 10 Ch37 Ensure Vbatt=3.6 V Yes Oscilloscope C7702 C7711 VPCTRL_900 Yes Spectrum analyzer RF@Test-Jig Pout = +24.5 dBm, 897.4MHz Yes GSM900 TX OK Check PA N7700 Check Power Loop (TXC,Rfin 900, DET)
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IREF01 Mode R7713
V ~ 1.77 Volt V = 1.8 Volt V= 2.7 V No
Check Baseband
No
GSM1800 transmitter
General instructions for GSM1800 TX troubleshooting
Start the preparations as described in chapter "General instructions for TX troubleshooting". GMSK Set operating mode to local mode. Select Testing RF Controls
Wait until the RF Controls window pops up Select Band Active unit Operation mode RX/TX Channel TX Power Level TX Data Type Edge GSM 1800 TX Burst 700 5 Random Off
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RH-37 6(b) - RF Troubleshooting Instructions
Now the measurement equipment should detect the following output signal of the phone: Pout = +23dBm @ 1747.8 MHz If this is not the case, then go to the GMSK fault finding chart for GSM1800 transmitter. EDGE Set operating mode to local mode. Select Testing RF Controls
Wait until the RF controls window pops up. Select Band Active unit Operation mode RX/TX Channel TX Power Level GSM 1800 TX Burst 700 5
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RH-37 6(b) - RF Troubleshooting Instructions TX Data Type Edge The setup should now look like this: All 1 On
Nokia Customer Care
Now the measurement equipment should detect the following output signal of the phone: Pout = +21.5 dBm @ 1747.8 MHz If this is not the case, then go to the EDGE fault finding chart for GSM1800 transmitter. Fault finding chart for GSM1800 transmitter In the following, it is assumed that the TXP signal is used as trigger signal. For that, a TXP test point is provided.
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TX_Data Type: Random TX Power Level: 5 Ch700 Ensure Vbatt=3.6 V Yes Oscilloscope C7711 R7511 C7512 TXP testpoint C7517 R7516 Yes Oscilloscope C7529 C7529 C7530 C7530 Yes Oscilloscope C7709 VC1 VC2 VC3 R7715 Yes Spectrum analyzer T7700 out, R7709 in
RH-37 6(b) - RF Troubleshooting Instructions
Mode
VREF01 VR2 TXP VR5 VR3
V = 0 Volt Vdc = 1.35 Volt Vdc = 2.78 Volt V = 1.8 Volt Vdc = 2.78 Volt Vdc = 2.78 Volt
No
Check Baseband
TXIOUTP TXIOUTN TXQOUTP TXQOUTN
Vac = 0.4 Vpp, Vdc = 1.2 V Vac = 0.4 Vpp, Vdc = 1.2 V Vac = 0.4 Vpp, Vdc = 1.2 V Vac = 0.4 Vpp, Vdc = 1.2 V
No
Check Baseband
VTXB_1800 _1900 CONT1 CONT2 CONT3 VPCTRL_18 00_1900
V = 2.7 Volt V = 2.7 Volt V = 2.7 Volt V = 0 Volt V > 1.14 Volt
No
Check Helgo Serial Interface Helgo
No RFin_180 0/1900 P> 2 dBm, 1747.8MHz Compare with good sample
Check T7700 Balun Helgo Synthesizer
Yes Spectrum analyzer Z7800 TX2 (PA N7700 RFOut_1800/1900) Power = +21.6 dBm, 1747.8 MHz Yes Spectrum analyzer RF@Test-Jig Pout = +20 dBm, 1747.8 MHz Yes GSM 1800 TX OK
No
Check PA N7700 Check Power Loop (TXC, Vpctrl 1800 1900, DET) Check
No Antenna Switch (Z7800)
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RH-37 6(b) - RF Troubleshooting Instructions EDGE Ensure that GMSK is ok.
Use Phoenix to select TX_Data Type: All 1 EDGE: On TX Power Level: 5 Ch700 Ensure Vbatt=3.6 V Yes Oscilloscope C7702 C7711 VPCTRL_900 Yes Spectrum analyzer RF@Test-Jig Pout = +21.5 dBm, 1747.8 MHz Yes GSM 1800 TX OK
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IREF_900 Mode R7715
V = 1.83 Volt V = 1.8 Volt Vdc= 2.7 V No
Check Baseband
No
Check PA N7700 Check Power Loop (TXC, RFin 1800 1900, DET)
GSM1900 transmitter
General instructions for GSM1900 TX troubleshooting
Start the preparations as described in chapter "General instructions for TX troubleshooting". GMSK Set operating mode to local mode. Select Testing RF Controls
Wait until the RF Controls window pops up. Select Band Active unit Operation mode RX/TX Channel TX Power Level TX Data Type Edge Page 28 GSM 1900 TX Burst 661 5 Random Off Nokia Corporation Issue 1 07/04
Nokia Customer Care The setup should now look like this:
RH-37 6(b) - RF Troubleshooting Instructions
Now the measurement equipment should detect the following output signal of the phone: Pout = +23dBm @ 1880 MHz If this is not the case, then go to the GMSK fault finding chart for GSM1900 transmitter. EDGE Set operating mode to local mode. Select Testing RF Controls
Wait until the RF Controls window pops up. Select Band Active unit Operation mode RX/TX Channel TX Power Level TX Data Type GSM 1900 TX Burst 661 5 All1
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RH-37 6(b) - RF Troubleshooting Instructions Edge The setup should now look like this: On
Nokia Customer Care
Now the measurement equipment should detect the following output signal of the phone: Pout = +21.5 dBm @ 1880 MHz If this is not the case, then go to the EDGE fault finding chart for GSM1900 transmitter. Fault finding chart for GSM1900 transmitter In the following, it is assumed that the TXP signal is used as trigger signal. For that, a TXP test point is provided.
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Use Phoenix to select TX_Data Type: Random TX Power Level: 5 Ch661 Ensure Vbatt=3.6 V Yes Oscilloscope C7711 R7511 C7512 TXP testpoint C7517 R7516 Yes Oscilloscope C7529 C7529 C7530 C7530 Yes Oscilloscope C7709 VC1 VC2 VC3 R7715 Yes Spectrum analyzer T7700 out, R7709 in
RH-37 6(b) - RF Troubleshooting Instructions
Mode
VREF01 VR2 TXP VR5 VR3
Vdc = 0 Volt Vdc = 1.35 Volt Vdc = 2.78 Volt V = 1.8 Volt Vdc = 2.78 Volt Vdc = 2.78 Volt
No
Check Baseband
TXIOUTP TXIOUTN TXQOUTP TXQOUTN
Vac = 0.4 Vpp, Vdc = 1.2 V Vac = 0.4 Vpp, Vdc = 1.2 V Vac = 0.4 Vpp, Vdc = 1.2 V Vac = 0.4 Vpp, Vdc = 1.2 V
No
Check Baseband
VTXB_1800 _1900 CONT1 CONT2 CONT3 VPCTRL_18 00_1900
V = 2.78 Volt V = 2.7 Volt V = 2.7 Volt V = 0 Volt V = 1.12 Volt
No
Check Helgo Serial Interface Helgo
No RFin_180 0/1900 P> 2 dBm, 1880 MHz Compare with good sample
Check T7700 Balun Helgo Synthesizer
Yes Spectrum analyzer Z7800 TX2 (PA N7700 RFOut_1800/1900) Power = +21.6 dBm, 1880 MHz Yes Spectrum analyzer RF@Test-Jig Pout = +20 dBm, 1880 MHz Yes GSM 1900 TX OK
No
Check PA N7700 Check Power Loop (TXC Vpctrl 1800 1900, DET) Check
No Antenna Switch (Z7800)
Issue 1 07/04
Nokia Corporation
Page 31
RH-37 6(b) - RF Troubleshooting Instructions EDGE Ensure that GMSK is ok.
Use Phoenix to select TX_Data Type: All 1 EDGE: On TX Power Level: 5 Ch661 Ensure Vbatt=3.6 V Yes Oscilloscope C7702 C7711 VPCTRL_1800 1900 Yes Spectrum analyzer RF@Test-Jig Pout = +21.5 dBm, 1880 MHz Yes GSM 1900 TX OK
Nokia Customer Care
IREF_900 Mode R7715
V = 1.83 Volt V = 2.78 Volt V= 2.7 V No
Check Baseband
No
Check PA N7700 Check Power Loop (TXC, RFin 1800 1900, DET)
Page 32
Nokia Corporation
Issue 1 07/04
Nokia Customer Care
RH-37 6(b) - RF Troubleshooting Instructions
Synthesizer
General instructions for synthesizer troubleshooting
Connect the phone to a PC, which has Phoenix Service Software and a dongle installed, using either · · · repair jig and DAU-9S (RS232) cable or repair jig and XCS-4 cable via FPS-8 Flash Box or DAU-9T cable (RS232).
Connect the phone to a power supply (DC voltage of 3.6V) and switch the phone on. Follow the instructions in the chapters below.
Checking synthesizer operation
Start Phoenix Service Software and open FBUS connection. Select "Scan Product" (Ctrl-R or in menu File - Scan Product). Wait until phone information is shown in the lower right corner of the screen. Set to . Open window "RF Controls" (menu Testing - RF Controls) Set the synthesizer to the following mode: Select Band Active unit Operation mode RX/TX Channel GSM 1800 RX Continuous 700
Issue 1 07/04
Nokia Corporation
Page 33
RH-37 6(b) - RF Troubleshooting Instructions The setup should now look like this:
Nokia Customer Care
The VCO chamber has a fixed shielding lid, which can only be opened by destroying it. To enable measurements with a closed lid, holes are located at positions where the supply voltage VR7, the tuning voltage Vc and the output frequency fVCO can be measured.
Figure 1: Test holes in the VCO chamber
Tuning voltage Vc @ C7503
Output frequency fVCO @ R7503
VCO supply voltage VR7 @ C7500
The VCO frequency has to be measured with a special probe, which fits into the holes of the shielding lid. A thin coax cable can be used for this purpose, where the outer conductor is removed for 2mm. The isolation and the inner conductor must fit into the hole of the shielding lid and provide a capacitive coupling to the attenuator R7503 at the VCO output. A spectrum analyzer is used to display the frequency.
Page 34
Nokia Corporation
Issue 1 07/04
Nokia Customer Care
RH-37 6(b) - RF Troubleshooting Instructions
Figure 2: VCO probe
The VCO frequency is twice the Rx frequency in the GSM1800 band: fVCO = 2 * fRX = 2 * 1842.8 MHz = 3685.6 MHz The tuning voltage can be easily measured at the Vc input of the VCO. The corresponding hole in the shielding lid enables the voltage measurement at C7503, which shows the same DC voltage as Vc. The tuning voltage should be 2.1VDC .. 2.6VDC at fVCO = 3685.6MHz. The tuning sensitivity of the VCO is typically 250MHz/V. The typical relation of VCO frequency and tuning voltage is shown in the following diagram:
Figure 3: Typical frequency tuning curve for the FDK VCO
Temperature: +25°C
4500
Frequency [MHz]
4000
3500
3000 0 0.5 1 1.5 2 2.5 3 VCTRL [V] 2.55V @ 24.4 .. 25.4°C High limit 2.7V @ 24.4 .. 25.4°C Low limit 2.85V @ 24.4 .. 25.4°C 3.5 4 4.5 5 5.5 6
Issue 1 07/04
Nokia Corporation
Page 35
RH-37 6(b) - RF Troubleshooting Instructions
Nokia Customer Care
Even if the PLL is not working properly (Vc outside the valid range), a frequency at the output of the VCO can be detected between 3GHz and 4.4 GHz (if the VCO itself is ok and the supply voltage VR7 = 2.78V is applied). If the frequency or the tuning voltage have other values than given above, see the fault finding chart for PLL syntesizer below.
Fault finding chart for PLL synthesizer
Figure 4: PLL Fault Finding Tree
Phoenix: Phone is responding to Phoenix commands. For example, Ctrl-R reads the right phone information. Yes No Baseband part is not working, possible reason: 26MHz missing. Synthesizer Fault Finding Tree part 1
Oscilloscope VCTCXO output at G7501 26MHz,app.0.8Vpp No Yes Oscilloscope REFCLK output of N7500: Signal VCTCXO=RFCLK_I at C2902, R2902. 26MHz,app.0.8Vpp Yes Check Baseband part for errors Check supply filter components: R7519, C7522, VDIG at N7500 Check C2902, R2902 and N7500. Check UEM and Software. VCTCXO G7501 defective or short circuit to GND. Check supply filter components : C2235, R7516, C7526. Check UEM and base band part.
No
Oscilloscope: Check VCTCXO supply
(VR3=2.78V, this can be checked after power on for a time of about 32sec. After that time the voltage is going down.)
Yes
No
Page 36
Nokia Corporation
Issue 1 07/04
Nokia Customer Care
RH-37 6(b) - RF Troubleshooting Instructions
Setup with Phoenix: Band: GSM 1800 Mode: RX Continuous Channel: 700
Synthesizer Fault Finding Tree part 2
Spectrum analyzer VCO out (G7500)
fVCO = 3685.6 MHz Vc of VCO = 2.1..2.6V
Yes
PLL Block is functional
No Spectrum analyzer VCO out (G7500)
Some signal 3 - 4.4 GHz
Yes
No Yes No Check R7503 and T7500. Change VCO G7500 Check supply filter components: C2203, R7500, C7500, C7501 Check UEM.
Oscilloscope VCO supply
(VR7 = 2.78V)
Oscilloscope VCO tuning voltage
Vc of VCO = 0V
Yes
No Oscilloscope Check RFBus signals
RFBusClk, RFBusData, RFBusEn1 ok?
Yes No
Change RF ASIC N7500 Check baseband part. Check loop filter components: C7502, C7503, C7504, R7501, R7502 Short circuit to ground? RF ASIC N7500 could be defective. Check supply filter components: C2232, C299, C7516, C7517, C7518 Check UEM.
Oscilloscope PLL supply
(VR1=4.7V, VR5=2.78V)
Yes No
It is important to note that the power supply VR3 of the VCTCXO is only switched off in the so called `Deep Sleep Mode' and the power supply VR7 of the VCO (G7500) is switched off in so called `Sleep Mode'.
Issue 1 07/04
Nokia Corporation
Page 37
RH-37 6(b) - RF Troubleshooting Instructions
Nokia Customer Care
Frequency tables
GSM900 (including EGSM900)
CH TX RX VCO TX VCO RX 975 880.2 925.2 3520.8 3700.8 976 880.4 925.4 3521.6 3701.6 977 880.6 925.6 3522.4 3702.4 978 880.8 925.8 3523.2 3703.2 979 881.0 926.0 3524.0 3704.0 980 881.2 926.2 3524.8 3704.8 981 881.4 926.4 3525.6 3705.6 982 881.6 926.6 3526.4 3706.4 983 881.8 926.8 3527.2 3707.2 984 882.0 927.0 3528.0 3708.0 985 882.2 927.2 3528.8 3708.8 986 882.4 927.4 3529.6 3709.6 987 882.6 927.6 3530.4 3710.4 988 882.8 927.8 3531.2 3711.2 989 883.0 928.0 3532.0 3712.0 990 883.2 928.2 3532.8 3712.8 991 883.4 928.4 3533.6 3713.6 992 883.6 928.6 3534.4 3714.4 993 883.8 928.8 3535.2 3715.2 994 884.0 929.0 3536.0 3716.0 995 884.2 929.2 3536.8 3716.8 996 884.4 929.4 3537.6 3717.6 997 884.6 929.6 3538.4 3718.4 998 884.8 929.8 3539.2 3719.2 999 885.0 930.0 3540.0 3720.0 1000 885.2 930.2 3540.8 3720.8 1001 885.4 930.4 3541.6 3721.6 1002 885.6 930.6 3542.4 3722.4 1003 885.8 930.8 3543.2 3723.2 1004 886.0 931.0 3544.0 3724.0 1005 886.2 931.2 3544.8 3724.8 1006 886.4 931.4 3545.6 3725.6 1007 886.6 931.6 3546.4 3726.4 1008 886.8 931.8 3547.2 3727.2 1009 887.0 932.0 3548.0 3728.0 1010 887.2 932.2 3548.8 3728.8 1011 887.4 932.4 3549.6 3729.6 1012 887.6 932.6 3550.4 3730.4 1013 887.8 932.8 3551.2 3731.2 1014 888.0 933.0 3552.0 3732.0 1015 888.2 933.2 3552.8 3732.8 1016 888.4 933.4 3553.6 3733.6 1017 888.6 933.6 3554.4 3734.4 1018 888.8 933.8 3555.2 3735.2 1019 889.0 934.0 3556.0 3736.0 1020 889.2 934.2 3556.8 3736.8 1021 889.4 934.4 3557.6 3737.6 1022 889.6 934.6 3558.4 3738.4 1023 889.8 934.8 3559.2 3739.2 0 890.0 935.0 3560.0 3740.0 Frequency list EGSM900 CH TX RX VCO TX VCO RX 1 890.2 935.2 3560.8 3740.8 2 890.4 935.4 3561.6 3741.6 3 890.6 935.6 3562.4 3742.4 4 890.8 935.8 3563.2 3743.2 5 891.0 936.0 3564.0 3744.0 6 891.2 936.2 3564.8 3744.8 7 891.4 936.4 3565.6 3745.6 8 891.6 936.6 3566.4 3746.4 9 891.8 936.8 3567.2 3747.2 10 892.0 937.0 3568.0 3748.0 11 892.2 937.2 3568.8 3748.8 12 892.4 937.4 3569.6 3749.6 13 892.6 937.6 3570.4 3750.4 14 892.8 937.8 3571.2 3751.2 15 893.0 938.0 3572.0 3752.0 16 893.2 938.2 3572.8 3752.8 17 893.4 938.4 3573.6 3753.6 18 893.6 938.6 3574.4 3754.4 19 893.8 938.8 3575.2 3755.2 20 894.0 939.0 3576.0 3756.0 21 894.2 939.2 3576.8 3756.8 22 894.4 939.4 3577.6 3757.6 23 894.6 939.6 3578.4 3758.4 24 894.8 939.8 3579.2 3759.2 25 895.0 940.0 3580.0 3760.0 26 895.2 940.2 3580.8 3760.8 27 895.4 940.4 3581.6 3761.6 28 895.6 940.6 3582.4 3762.4 29 895.8 940.8 3583.2 3763.2 30 896.0 941.0 3584.0 3764.0 31 896.2 941.2 3584.8 3764.8 32 896.4 941.4 3585.6 3765.6 33 896.6 941.6 3586.4 3766.4 34 896.8 941.8 3587.2 3767.2 35 897.0 942.0 3588.0 3768.0 36 897.2 942.2 3588.8 3768.8 37 897.4 942.4 3589.6 3769.6 38 897.6 942.6 3590.4 3770.4 39 897.8 942.8 3591.2 3771.2 40 898.0 943.0 3592.0 3772.0 41 898.2 943.2 3592.8 3772.8 42 898.4 943.4 3593.6 3773.6 43 898.6 943.6 3594.4 3774.4 44 898.8 943.8 3595.2 3775.2 45 899.0 944.0 3596.0 3776.0 46 899.2 944.2 3596.8 3776.8 47 899.4 944.4 3597.6 3777.6 48 899.6 944.6 3598.4 3778.4 49 899.8 944.8 3599.2 3779.2 50 900.0 945.0 3600.0 3780.0 51 900.2 945.2 3600.8 3780.8 52 900.4 945.4 3601.6 3781.6 53 900.6 945.6 3602.4 3782.4 54 900.8 945.8 3603.2 3783.2 55 901.0 946.0 3604.0 3784.0 56 901.2 946.2 3604.8 3784.8 57 901.4 946.4 3605.6 3785.6 58 901.6 946.6 3606.4 3786.4 59 901.8 946.8 3607.2 3787.2 60 902.0 947.0 3608.0 3788.0 61 902.2 947.2 3608.8 3788.8 62 902.4 947.4 3609.6 3789.6 CH TX RX VCO TX VCO RX 63 902.6 947.6 3610.4 3790.4 64 902.8 947.8 3611.2 3791.2 65 903.0 948.0 3612.0 3792.0 66 903.2 948.2 3612.8 3792.8 67 903.4 948.4 3613.6 3793.6 68 903.6 948.6 3614.4 3794.4 69 903.8 948.8 3615.2 3795.2 70 904.0 949.0 3616.0 3796.0 71 904.2 949.2 3616.8 3796.8 72 904.4 949.4 3617.6 3797.6 73 904.6 949.6 3618.4 3798.4 74 904.8 949.8 3619.2 3799.2 75 905.0 950.0 3620.0 3800.0 76 905.2 950.2 3620.8 3800.8 77 905.4 950.4 3621.6 3801.6 78 905.6 950.6 3622.4 3802.4 79 905.8 950.8 3623.2 3803.2 80 906.0 951.0 3624.0 3804.0 81 906.2 951.2 3624.8 3804.8 82 906.4 951.4 3625.6 3805.6 83 906.6 951.6 3626.4 3806.4 84 906.8 951.8 3627.2 3807.2 85 907.0 952.0 3628.0 3808.0 86 907.2 952.2 3628.8 3808.8 87 907.4 952.4 3629.6 3809.6 88 907.6 952.6 3630.4 3810.4 89 907.8 952.8 3631.2 3811.2 90 908.0 953.0 3632.0 3812.0 91 908.2 953.2 3632.8 3812.8 92 908.4 953.4 3633.6 3813.6 93 908.6 953.6 3634.4 3814.4 94 908.8 953.8 3635.2 3815.2 95 909.0 954.0 3636.0 3816.0 96 909.2 954.2 3636.8 3816.8 97 909.4 954.4 3637.6 3817.6 98 909.6 954.6 3638.4 3818.4 99 909.8 954.8 3639.2 3819.2 100 910.0 955.0 3640.0 3820.0 101 910.2 955.2 3640.8 3820.8 102 910.4 955.4 3641.6 3821.6 103 910.6 955.6 3642.4 3822.4 104 910.8 955.8 3643.2 3823.2 105 911.0 956.0 3644.0 3824.0 106 911.2 956.2 3644.8 3824.8 107 911.4 956.4 3645.6 3825.6 108 911.6 956.6 3646.4 3826.4 109 911.8 956.8 3647.2 3827.2 110 912.0 957.0 3648.0 3828.0 111 912.2 957.2 3648.8 3828.8 112 912.4 957.4 3649.6 3829.6 113 912.6 957.6 3650.4 3830.4 114 912.8 957.8 3651.2 3831.2 115 913.0 958.0 3652.0 3832.0 116 913.2 958.2 3652.8 3832.8 117 913.4 958.4 3653.6 3833.6 118 913.6 958.6 3654.4 3834.4 119 913.8 958.8 3655.2 3835.2 120 914.0 959.0 3656.0 3836.0 121 914.2 959.2 3656.8 3836.8 122 914.4 959.4 3657.6 3837.6 123 914.6 959.6 3658.4 3838.4 124 914.8 959.8 3659.2 3839.2
Page 38
Nokia Corporation
Issue 1 07/04
Nokia Customer Care GSM1800
CH
512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570
RH-37 6(b) - RF Troubleshooting Instructions
TX 1710.2 1710.4 1710.6 1710.8 1711.0 1711.2 1711.4 1711.6 1711.8 1712.0 1712.2 1712.4 1712.6 1712.8 1713.0 1713.2 1713.4 1713.6 1713.8 1714.0 1714.2 1714.4 1714.6 1714.8 1715.0 1715.2 1715.4 1715.6 1715.8 1716.0 1716.2 1716.4 1716.6 1716.8 1717.0 1717.2 1717.4 1717.6 1717.8 1718.0 1718.2 1718.4 1718.6 1718.8 1719.0 1719.2 1719.4 1719.6 1719.8 1720.0 1720.2 1720.4 1720.6 1720.8 1721.0 1721.2 1721.4 1721.6 1721.8
RX VCO TX VCO RX 1805.2 3420.4 3610.4 1805.4 3420.8 3610.8 1805.6 3421.2 3611.2 1805.8 3421.6 3611.6 1806.0 3422.0 3612.0 1806.2 3422.4 3612.4 1806.4 3422.8 3612.8 1806.6 3423.2 3613.2 1806.8 3423.6 3613.6 1807.0 3424.0 3614.0 1807.2 3424.4 3614.4 1807.4 3424.8 3614.8 1807.6 3425.2 3615.2 1807.8 3425.6 3615.6 1808.0 3426.0 3616.0 1808.2 3426.4 3616.4 1808.4 3426.8 3616.8 1808.6 3427.2 3617.2 1808.8 3427.6 3617.6 1809.0 3428.0 3618.0 1809.2 3428.4 3618.4 1809.4 3428.8 3618.8 1809.6 3429.2 3619.2 1809.8 3429.6 3619.6 1810.0 3430.0 3620.0 1810.2 3430.4 3620.4 1810.4 3430.8 3620.8 1810.6 3431.2 3621.2 1810.8 3431.6 3621.6 1811.0 3432.0 3622.0 1811.2 3432.4 3622.4 1811.4 3432.8 3622.8 1811.6 3433.2 3623.2 1811.8 3433.6 3623.6 1812.0 3434.0 3624.0 1812.2 3434.4 3624.4 1812.4 3434.8 3624.8 1812.6 3435.2 3625.2 1812.8 3435.6 3625.6 1813.0 3436.0 3626.0 1813.2 3436.4 3626.4 1813.4 3436.8 3626.8 1813.6 3437.2 3627.2 1813.8 3437.6 3627.6 1814.0 3438.0 3628.0 1814.2 3438.4 3628.4 1814.4 3438.8 3628.8 1814.6 3439.2 3629.2 1814.8 3439.6 3629.6 1815.0 3440.0 3630.0 1815.2 3440.4 3630.4 1815.4 3440.8 3630.8 1815.6 3441.2 3631.2 1815.8 3441.6 3631.6 1816.0 3442.0 3632.0 1816.2 3442.4 3632.4 1816.4 3442.8 3632.8 1816.6 3443.2 3633.2 1816.8 3443.6 3633.6
CH
606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664
TX 1729.0 1729.2 1729.4 1729.6 1729.8 1730.0 1730.2 1730.4 1730.6 1730.8 1731.0 1731.2 1731.4 1731.6 1731.8 1732.0 1732.2 1732.4 1732.6 1732.8 1733.0 1733.2 1733.4 1733.6 1733.8 1734.0 1734.2 1734.4 1734.6 1734.8 1735.0 1735.2 1735.4 1735.6 1735.8 1736.0 1736.2 1736.4 1736.6 1736.8 1737.0 1737.2 1737.4 1737.6 1737.8 1738.0 1738.2 1738.4 1738.6 1738.8 1739.0 1739.2 1739.4 1739.6 1739.8 1740.0 1740.2 1740.4 1740.6
Frequency list GSM1800 RX VCO TX VCO RX CH TX 1824.0 3458.0 3648.0 700 1747.8 1824.2 3458.4 3648.4 701 1748.0 1824.4 3458.8 3648.8 702 1748.2 1824.6 3459.2 3649.2 703 1748.4 1824.8 3459.6 3649.6 704 1748.6 1825.0 3460.0 3650.0 705 1748.8 1825.2 3460.4 3650.4 706 1749.0 1825.4 3460.8 3650.8 707 1749.2 1825.6 3461.2 3651.2 708 1749.4 1825.8 3461.6 3651.6 709 1749.6 1826.0 3462.0 3652.0 710 1749.8 1826.2 3462.4 3652.4 711 1750.0 1826.4 3462.8 3652.8 712 1750.2 1826.6 3463.2 3653.2 713 1750.4 1826.8 3463.6 3653.6 714 1750.6 1827.0 3464.0 3654.0 715 1750.8 1827.2 3464.4 3654.4 716 1751.0 1827.4 3464.8 3654.8 717 1751.2 1827.6 3465.2 3655.2 718 1751.4 1827.8 3465.6 3655.6 719 1751.6 1828.0 3466.0 3656.0 720 1751.8 1828.2 3466.4 3656.4 721 1752.0 1828.4 3466.8 3656.8 722 1752.2 1828.6 3467.2 3657.2 723 1752.4 1828.8 3467.6 3657.6 724 1752.6 1829.0 3468.0 3658.0 725 1752.8 1829.2 3468.4 3658.4 726 1753.0 1829.4 3468.8 3658.8 727 1753.2 1829.6 3469.2 3659.2 728 1753.4 1829.8 3469.6 3659.6 729 1753.6 1830.0 3470.0 3660.0 730 1753.8 1830.2 3470.4 3660.4 731 1754.0 1830.4 3470.8 3660.8 732 1754.2 1830.6 3471.2 3661.2 733 1754.4 1830.8 3471.6 3661.6 734 1754.6 1831.0 3472.0 3662.0 735 1754.8 1831.2 3472.4 3662.4 736 1755.0 1831.4 3472.8 3662.8 737 1755.2 1831.6 3473.2 3663.2 738 1755.4 1831.8 3473.6 3663.6 739 1755.6 1832.0 3474.0 3664.0 740 1755.8 1832.2 3474.4 3664.4 741 1756.0 1832.4 3474.8 3664.8 742 1756.2 1832.6 3475.2 3665.2 743 1756.4 1832.8 3475.6 3665.6 744 1756.6 1833.0 3476.0 3666.0 745 1756.8 1833.2 3476.4 3666.4 746 1757.0 1833.4 3476.8 3666.8 747 1757.2 1833.6 3477.2 3667.2 748 1757.4 1833.8 3477.6 3667.6 749 1757.6 1834.0 3478.0 3668.0 750 1757.8 1834.2 3478.4 3668.4 751 1758.0 1834.4 3478.8 3668.8 752 1758.2 1834.6 3479.2 3669.2 753 1758.4 1834.8 3479.6 3669.6 754 1758.6 1835.0 3480.0 3670.0 755 1758.8 1835.2 3480.4 3670.4 756 1759.0 1835.4 3480.8 3670.8 757 1759.2 1835.6 3481.2 3671.2 758 1759.4
RX VCO TX VCO RX 1842.8 3495.6 3685.6 1843.0 3496.0 3686.0 1843.2 3496.4 3686.4 1843.4 3496.8 3686.8 1843.6 3497.2 3687.2 1843.8 3497.6 3687.6 1844.0 3498.0 3688.0 1844.2 3498.4 3688.4 1844.4 3498.8 3688.8 1844.6 3499.2 3689.2 1844.8 3499.6 3689.6 1845.0 3500.0 3690.0 1845.2 3500.4 3690.4 1845.4 3500.8 3690.8 1845.6 3501.2 3691.2 1845.8 3501.6 3691.6 1846.0 3502.0 3692.0 1846.2 3502.4 3692.4 1846.4 3502.8 3692.8 1846.6 3503.2 3693.2 1846.8 3503.6 3693.6 1847.0 3504.0 3694.0 1847.2 3504.4 3694.4 1847.4 3504.8 3694.8 1847.6 3505.2 3695.2 1847.8 3505.6 3695.6 1848.0 3506.0 3696.0 1848.2 3506.4 3696.4 1848.4 3506.8 3696.8 1848.6 3507.2 3697.2 1848.8 3507.6 3697.6 1849.0 3508.0 3698.0 1849.2 3508.4 3698.4 1849.4 3508.8 3698.8 1849.6 3509.2 3699.2 1849.8 3509.6 3699.6 1850.0 3510.0 3700.0 1850.2 3510.4 3700.4 1850.4 3510.8 3700.8 1850.6 3511.2 3701.2 1850.8 3511.6 3701.6 1851.0 3512.0 3702.0 1851.2 3512.4 3702.4 1851.4 3512.8 3702.8 1851.6 3513.2 3703.2 1851.8 3513.6 3703.6 1852.0 3514.0 3704.0 1852.2 3514.4 3704.4 1852.4 3514.8 3704.8 1852.6 3515.2 3705.2 1852.8 3515.6 3705.6 1853.0 3516.0 3706.0 1853.2 3516.4 3706.4 1853.4 3516.8 3706.8 1853.6 3517.2 3707.2 1853.8 3517.6 3707.6 1854.0 3518.0 3708.0 1854.2 3518.4 3708.4 1854.4 3518.8 3708.8
CH
794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852
TX 1766.6 1766.8 1767.0 1767.2 1767.4 1767.6 1767.8 1768.0 1768.2 1768.4 1768.6 1768.8 1769.0 1769.2 1769.4 1769.6 1769.8 1770.0 1770.2 1770.4 1770.6 1770.8 1771.0 1771.2 1771.4 1771.6 1771.8 1772.0 1772.2 1772.4 1772.6 1772.8 1773.0 1773.2 1773.4 1773.6 1773.8 1774.0 1774.2 1774.4 1774.6 1774.8 1775.0 1775.2 1775.4 1775.6 1775.8 1776.0 1776.2 1776.4 1776.6 1776.8 1777.0 1777.2 1777.4 1777.6 1777.8 1778.0 1778.2
RX VCO TX VCO RX 1861.6 3533.2 3723.2 1861.8 3533.6 3723.6 1862.0 3534.0 3724.0 1862.2 3534.4 3724.4 1862.4 3534.8 3724.8 1862.6 3535.2 3725.2 1862.8 3535.6 3725.6 1863.0 3536.0 3726.0 1863.2 3536.4 3726.4 1863.4 3536.8 3726.8 1863.6 3537.2 3727.2 1863.8 3537.6 3727.6 1864.0 3538.0 3728.0 1864.2 3538.4 3728.4 1864.4 3538.8 3728.8 1864.6 3539.2 3729.2 1864.8 3539.6 3729.6 1865.0 3540.0 3730.0 1865.2 3540.4 3730.4 1865.4 3540.8 3730.8 1865.6 3541.2 3731.2 1865.8 3541.6 3731.6 1866.0 3542.0 3732.0 1866.2 3542.4 3732.4 1866.4 3542.8 3732.8 1866.6 3543.2 3733.2 1866.8 3543.6 3733.6 1867.0 3544.0 3734.0 1867.2 3544.4 3734.4 1867.4 3544.8 3734.8 1867.6 3545.2 3735.2 1867.8 3545.6 3735.6 1868.0 3546.0 3736.0 1868.2 3546.4 3736.4 1868.4 3546.8 3736.8 1868.6 3547.2 3737.2 1868.8 3547.6 3737.6 1869.0 3548.0 3738.0 1869.2 3548.4 3738.4 1869.4 3548.8 3738.8 1869.6 3549.2 3739.2 1869.8 3549.6 3739.6 1870.0 3550.0 3740.0 1870.2 3550.4 3740.4 1870.4 3550.8 3740.8 1870.6 3551.2 3741.2 1870.8 3551.6 3741.6 1871.0 3552.0 3742.0 1871.2 3552.4 3742.4 1871.4 3552.8 3742.8 1871.6 3553.2 3743.2 1871.8 3553.6 3743.6 1872.0 3554.0 3744.0 1872.2 3554.4 3744.4 1872.4 3554.8 3744.8 1872.6 3555.2 3745.2 1872.8 3555.6 3745.6 1873.0 3556.0 3746.0 1873.2 3556.4 3746.4
Issue 1 07/04
Nokia Corporation
Page 39
RH-37 6(b) - RF Troubleshooting Instructions
Nokia Customer Care
570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605
1721.8 1722.0 1722.2 1722.4 1722.6 1722.8 1723.0 1723.2 1723.4 1723.6 1723.8 1724.0 1724.2 1724.4 1724.6 1724.8 1725.0 1725.2 1725.4 1725.6 1725.8 1726.0 1726.2 1726.4 1726.6 1726.8 1727.0 1727.2 1727.4 1727.6 1727.8 1728.0 1728.2 1728.4 1728.6 1728.8
1816.8 1817.0 1817.2 1817.4 1817.6 1817.8 1818.0 1818.2 1818.4 1818.6 1818.8 1819.0 1819.2 1819.4 1819.6 1819.8 1820.0 1820.2 1820.4 1820.6 1820.8 1821.0 1821.2 1821.4 1821.6 1821.8 1822.0 1822.2 1822.4 1822.6 1822.8 1823.0 1823.2 1823.4 1823.6 1823.8
3443.6 3444.0 3444.4 3444.8 3445.2 3445.6 3446.0 3446.4 3446.8 3447.2 3447.6 3448.0 3448.4 3448.8 3449.2 3449.6 3450.0 3450.4 3450.8 3451.2 3451.6 3452.0 3452.4 3452.8 3453.2 3453.6 3454.0 3454.4 3454.8 3455.2 3455.6 3456.0 3456.4 3456.8 3457.2 3457.6
3633.6 3634.0 3634.4 3634.8 3635.2 3635.6 3636.0 3636.4 3636.8 3637.2 3637.6 3638.0 3638.4 3638.8 3639.2 3639.6 3640.0 3640.4 3640.8 3641.2 3641.6 3642.0 3642.4 3642.8 3643.2 3643.6 3644.0 3644.4 3644.8 3645.2 3645.6 3646.0 3646.4 3646.8 3647.2 3647.6
664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699
1740.6 1740.8 1741.0 1741.2 1741.4 1741.6 1741.8 1742.0 1742.2 1742.4 1742.6 1742.8 1743.0 1743.2 1743.4 1743.6 1743.8 1744.0 1744.2 1744.4 1744.6 1744.8 1745.0 1745.2 1745.4 1745.6 1745.8 1746.0 1746.2 1746.4 1746.6 1746.8 1747.0 1747.2 1747.4 1747.6
1835.6 1835.8 1836.0 1836.2 1836.4 1836.6 1836.8 1837.0 1837.2 1837.4 1837.6 1837.8 1838.0 1838.2 1838.4 1838.6 1838.8 1839.0 1839.2 1839.4 1839.6 1839.8 1840.0 1840.2 1840.4 1840.6 1840.8 1841.0 1841.2 1841.4 1841.6 1841.8 1842.0 1842.2 1842.4 1842.6
3481.2 3481.6 3482.0 3482.4 3482.8 3483.2 3483.6 3484.0 3484.4 3484.8 3485.2 3485.6 3486.0 3486.4 3486.8 3487.2 3487.6 3488.0 3488.4 3488.8 3489.2 3489.6 3490.0 3490.4 3490.8 3491.2 3491.6 3492.0 3492.4 3492.8 3493.2 3493.6 3494.0 3494.4 3494.8 3495.2
3671.2 3671.6 3672.0 3672.4 3672.8 3673.2 3673.6 3674.0 3674.4 3674.8 3675.2 3675.6 3676.0 3676.4 3676.8 3677.2 3677.6 3678.0 3678.4 3678.8 3679.2 3679.6 3680.0 3680.4 3680.8 3681.2 3681.6 3682.0 3682.4 3682.8 3683.2 3683.6 3684.0 3684.4 3684.8 3685.2
758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793
1759.4 1759.6 1759.8 1760.0 1760.2 1760.4 1760.6 1760.8 1761.0 1761.2 1761.4 1761.6 1761.8 1762.0 1762.2 1762.4 1762.6 1762.8 1763.0 1763.2 1763.4 1763.6 1763.8 1764.0 1764.2 1764.4 1764.6 1764.8 1765.0 1765.2 1765.4 1765.6 1765.8 1766.0 1766.2 1766.4
1854.4 1854.6 1854.8 1855.0 1855.2 1855.4 1855.6 1855.8 1856.0 1856.2 1856.4 1856.6 1856.8 1857.0 1857.2 1857.4 1857.6 1857.8 1858.0 1858.2 1858.4 1858.6 1858.8 1859.0 1859.2 1859.4 1859.6 1859.8 1860.0 1860.2 1860.4 1860.6 1860.8 1861.0 1861.2 1861.4
3518.8 3519.2 3519.6 3520.0 3520.4 3520.8 3521.2 3521.6 3522.0 3522.4 3522.8 3523.2 3523.6 3524.0 3524.4 3524.8 3525.2 3525.6 3526.0 3526.4 3526.8 3527.2 3527.6 3528.0 3528.4 3528.8 3529.2 3529.6 3530.0 3530.4 3530.8 3531.2 3531.6 3532.0 3532.4 3532.8
3708.8 3709.2 3709.6 3710.0 3710.4 3710.8 3711.2 3711.6 3712.0 3712.4 3712.8 3713.2 3713.6 3714.0 3714.4 3714.8 3715.2 3715.6 3716.0 3716.4 3716.8 3717.2 3717.6 3718.0 3718.4 3718.8 3719.2 3719.6 3720.0 3720.4 3720.8 3721.2 3721.6 3722.0 3722.4 3722.8
852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885
1778.2 1778.4 1778.6 1778.8 1779.0 1779.2 1779.4 1779.6 1779.8 1780.0 1780.2 1780.4 1780.6 1780.8 1781.0 1781.2 1781.4 1781.6 1781.8 1782.0 1782.2 1782.4 1782.6 1782.8 1783.0 1783.2 1783.4 1783.6 1783.8 1784.0 1784.2 1784.4 1784.6 1784.8
1873.2 1873.4 1873.6 1873.8 1874.0 1874.2 1874.4 1874.6 1874.8 1875.0 1875.2 1875.4 1875.6 1875.8 1876.0 1876.2 1876.4 1876.6 1876.8 1877.0 1877.2 1877.4 1877.6 1877.8 1878.0 1878.2 1878.4 1878.6 1878.8 1879.0 1879.2 1879.4 1879.6 1879.8
3556.4 3556.8 3557.2 3557.6 3558.0 3558.4 3558.8 3559.2 3559.6 3560.0 3560.4 3560.8 3561.2 3561.6 3562.0 3562.4 3562.8 3563.2 3563.6 3564.0 3564.4 3564.8 3565.2 3565.6 3566.0 3566.4 3566.8 3567.2 3567.6 3568.0 3568.4 3568.8 3569.2 3569.6
3746.4 3746.8 3747.2 3747.6 3748.0 3748.4 3748.8 3749.2 3749.6 3750.0 3750.4 3750.8 3751.2 3751.6 3752.0 3752.4 3752.8 3753.2 3753.6 3754.0 3754.4 3754.8 3755.2 3755.6 3756.0 3756.4 3756.8 3757.2 3757.6 3758.0 3758.4 3758.8 3759.2 3759.6
Page 40
Nokia Corporation
Issue 1 07/04
Nokia Customer Care GSM1900
CH
512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570
RH-37 6(b) - RF Troubleshooting Instructions
TX 1850.2 1850.4 1850.6 1850.8 1851.0 1851.2 1851.4 1851.6 1851.8 1852.0 1852.2 1852.4 1852.6 1852.8 1853.0 1853.2 1853.4 1853.6 1853.8 1854.0 1854.2 1854.4 1854.6 1854.8 1855.0 1855.2 1855.4 1855.6 1855.8 1856.0 1856.2 1856.4 1856.6 1856.8 1857.0 1857.2 1857.4 1857.6 1857.8 1858.0 1858.2 1858.4 1858.6 1858.8 1859.0 1859.2 1859.4 1859.6 1859.8 1860.0 1860.2 1860.4 1860.6 1860.8 1861.0 1861.2 1861.4 1861.6 1861.8
RX VCO TX VCO RX 1930.2 3700.4 3860.4 1930.4 3700.8 3860.8 1930.6 3701.2 3861.2 1930.8 3701.6 3861.6 1931.0 3702.0 3862.0 1931.2 3702.4 3862.4 1931.4 3702.8 3862.8 1931.6 3703.2 3863.2 1931.8 3703.6 3863.6 1932.0 3704.0 3864.0 1932.2 3704.4 3864.4 1932.4 3704.8 3864.8 1932.6 3705.2 3865.2 1932.8 3705.6 3865.6 1933.0 3706.0 3866.0 1933.2 3706.4 3866.4 1933.4 3706.8 3866.8 1933.6 3707.2 3867.2 1933.8 3707.6 3867.6 1934.0 3708.0 3868.0 1934.2 3708.4 3868.4 1934.4 3708.8 3868.8 1934.6 3709.2 3869.2 1934.8 3709.6 3869.6 1935.0 3710.0 3870.0 1935.2 3710.4 3870.4 1935.4 3710.8 3870.8 1935.6 3711.2 3871.2 1935.8 3711.6 3871.6 1936.0 3712.0 3872.0 1936.2 3712.4 3872.4 1936.4 3712.8 3872.8 1936.6 3713.2 3873.2 1936.8 3713.6 3873.6 1937.0 3714.0 3874.0 1937.2 3714.4 3874.4 1937.4 3714.8 3874.8 1937.6 3715.2 3875.2 1937.8 3715.6 3875.6 1938.0 3716.0 3876.0 1938.2 3716.4 3876.4 1938.4 3716.8 3876.8 1938.6 3717.2 3877.2 1938.8 3717.6 3877.6 1939.0 3718.0 3878.0 1939.2 3718.4 3878.4 1939.4 3718.8 3878.8 1939.6 3719.2 3879.2 1939.8 3719.6 3879.6 1940.0 3720.0 3880.0 1940.2 3720.4 3880.4 1940.4 3720.8 3880.8 1940.6 3721.2 3881.2 1940.8 3721.6 3881.6 1941.0 3722.0 3882.0 1941.2 3722.4 3882.4 1941.4 3722.8 3882.8 1941.6 3723.2 3883.2 1941.8 3723.6 3883.6
CH
606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664
TX 1869.0 1869.2 1869.4 1869.6 1869.8 1870.0 1870.2 1870.4 1870.6 1870.8 1871.0 1871.2 1871.4 1871.6 1871.8 1872.0 1872.2 1872.4 1872.6 1872.8 1873.0 1873.2 1873.4 1873.6 1873.8 1874.0 1874.2 1874.4 1874.6 1874.8 1875.0 1875.2 1875.4 1875.6 1875.8 1876.0 1876.2 1876.4 1876.6 1876.8 1877.0 1877.2 1877.4 1877.6 1877.8 1878.0 1878.2 1878.4 1878.6 1878.8 1879.0 1879.2 1879.4 1879.6 1879.8 1880.0 1880.2 1880.4 1880.6
Frequency list NPL-2 GSM1900 RX VCO TX VCO RX CH TX RX VCO TX VCO RX 1949.0 3738.0 3898.0 700 1887.8 1967.8 3775.6 3935.6 1949.2 3738.4 3898.4 701 1888.0 1968.0 3776.0 3936.0 1949.4 3738.8 3898.8 702 1888.2 1968.2 3776.4 3936.4 1949.6 3739.2 3899.2 703 1888.4 1968.4 3776.8 3936.8 1949.8 3739.6 3899.6 704 1888.6 1968.6 3777.2 3937.2 1950.0 3740.0 3900.0 705 1888.8 1968.8 3777.6 3937.6 1950.2 3740.4 3900.4 706 1889.0 1969.0 3778.0 3938.0 1950.4 3740.8 3900.8 707 1889.2 1969.2 3778.4 3938.4 1950.6 3741.2 3901.2 708 1889.4 1969.4 3778.8 3938.8 1950.8 3741.6 3901.6 709 1889.6 1969.6 3779.2 3939.2 1951.0 3742.0 3902.0 710 1889.8 1969.8 3779.6 3939.6 1951.2 3742.4 3902.4 711 1890.0 1970.0 3780.0 3940.0 1951.4 3742.8 3902.8 712 1890.2 1970.2 3780.4 3940.4 1951.6 3743.2 3903.2 713 1890.4 1970.4 3780.8 3940.8 1951.8 3743.6 3903.6 714 1890.6 1970.6 3781.2 3941.2 1952.0 3744.0 3904.0 715 1890.8 1970.8 3781.6 3941.6 1952.2 3744.4 3904.4 716 1891.0 1971.0 3782.0 3942.0 1952.4 3744.8 3904.8 717 1891.2 1971.2 3782.4 3942.4 1952.6 3745.2 3905.2 718 1891.4 1971.4 3782.8 3942.8 1952.8 3745.6 3905.6 719 1891.6 1971.6 3783.2 3943.2 1953.0 3746.0 3906.0 720 1891.8 1971.8 3783.6 3943.6 1953.2 3746.4 3906.4 721 1892.0 1972.0 3784.0 3944.0 1953.4 3746.8 3906.8 722 1892.2 1972.2 3784.4 3944.4 1953.6 3747.2 3907.2 723 1892.4 1972.4 3784.8 3944.8 1953.8 3747.6 3907.6 724 1892.6 1972.6 3785.2 3945.2 1954.0 3748.0 3908.0 725 1892.8 1972.8 3785.6 3945.6 1954.2 3748.4 3908.4 726 1893.0 1973.0 3786.0 3946.0 1954.4 3748.8 3908.8 727 1893.2 1973.2 3786.4 3946.4 1954.6 3749.2 3909.2 728 1893.4 1973.4 3786.8 3946.8 1954.8 3749.6 3909.6 729 1893.6 1973.6 3787.2 3947.2 1955.0 3750.0 3910.0 730 1893.8 1973.8 3787.6 3947.6 1955.2 3750.4 3910.4 731 1894.0 1974.0 3788.0 3948.0 1955.4 3750.8 3910.8 732 1894.2 1974.2 3788.4 3948.4 1955.6 3751.2 3911.2 733 1894.4 1974.4 3788.8 3948.8 1955.8 3751.6 3911.6 734 1894.6 1974.6 3789.2 3949.2 1956.0 3752.0 3912.0 735 1894.8 1974.8 3789.6 3949.6 1956.2 3752.4 3912.4 736 1895.0 1975.0 3790.0 3950.0 1956.4 3752.8 3912.8 737 1895.2 1975.2 3790.4 3950.4 1956.6 3753.2 3913.2 738 1895.4 1975.4 3790.8 3950.8 1956.8 3753.6 3913.6 739 1895.6 1975.6 3791.2 3951.2 1957.0 3754.0 3914.0 740 1895.8 1975.8 3791.6 3951.6 1957.2 3754.4 3914.4 741 1896.0 1976.0 3792.0 3952.0 1957.4 3754.8 3914.8 742 1896.2 1976.2 3792.4 3952.4 1957.6 3755.2 3915.2 743 1896.4 1976.4 3792.8 3952.8 1957.8 3755.6 3915.6 744 1896.6 1976.6 3793.2 3953.2 1958.0 3756.0 3916.0 745 1896.8 1976.8 3793.6 3953.6 1958.2 3756.4 3916.4 746 1897.0 1977.0 3794.0 3954.0 1958.4 3756.8 3916.8 747 1897.2 1977.2 3794.4 3954.4 1958.6 3757.2 3917.2 748 1897.4 1977.4 3794.8 3954.8 1958.8 3757.6 3917.6 749 1897.6 1977.6 3795.2 3955.2 1959.0 3758.0 3918.0 750 1897.8 1977.8 3795.6 3955.6 1959.2 3758.4 3918.4 751 1898.0 1978.0 3796.0 3956.0 1959.4 3758.8 3918.8 752 1898.2 1978.2 3796.4 3956.4 1959.6 3759.2 3919.2 753 1898.4 1978.4 3796.8 3956.8 1959.8 3759.6 3919.6 754 1898.6 1978.6 3797.2 3957.2 1960.0 3760.0 3920.0 755 1898.8 1978.8 3797.6 3957.6 1960.2 3760.4 3920.4 756 1899.0 1979.0 3798.0 3958.0 1960.4 3760.8 3920.8 757 1899.2 1979.2 3798.4 3958.4 1960.6 3761.2 3921.2 758 1899.4 1979.4 3798.8 3958.8
CH
794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810
TX 1906.6 1906.8 1907.0 1907.2 1907.4 1907.6 1907.8 1908.0 1908.2 1908.4 1908.6 1908.8 1909.0 1909.2 1909.4 1909.6 1909.8
RX VCO TX VCO RX 1986.6 3813.2 3973.2 1986.8 3813.6 3973.6 1987.0 3814.0 3974.0 1987.2 3814.4 3974.4 1987.4 3814.8 3974.8 1987.6 3815.2 3975.2 1987.8 3815.6 3975.6 1988.0 3816.0 3976.0 1988.2 3816.4 3976.4 1988.4 3816.8 3976.8 1988.6 3817.2 3977.2 1988.8 3817.6 3977.6 1989.0 3818.0 3978.0 1989.2 3818.4 3978.4 1989.4 3818.8 3978.8 1989.6 3819.2 3979.2 1989.8 3819.6 3979.6
Issue 1 07/04
Nokia Corporation
Page 41
RH-37 6(b) - RF Troubleshooting Instructions
Nokia Customer Care
571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605
1862.0 1862.2 1862.4 1862.6 1862.8 1863.0 1863.2 1863.4 1863.6 1863.8 1864.0 1864.2 1864.4 1864.6 1864.8 1865.0 1865.2 1865.4 1865.6 1865.8 1866.0 1866.2 1866.4 1866.6 1866.8 1867.0 1867.2 1867.4 1867.6 1867.8 1868.0 1868.2 1868.4 1868.6 1868.8
1942.0 1942.2 1942.4 1942.6 1942.8 1943.0 1943.2 1943.4 1943.6 1943.8 1944.0 1944.2 1944.4 1944.6 1944.8 1945.0 1945.2 1945.4 1945.6 1945.8 1946.0 1946.2 1946.4 1946.6 1946.8 1947.0 1947.2 1947.4 1947.6 1947.8 1948.0 1948.2 1948.4 1948.6 1948.8
3724.0 3724.4 3724.8 3725.2 3725.6 3726.0 3726.4 3726.8 3727.2 3727.6 3728.0 3728.4 3728.8 3729.2 3729.6 3730.0 3730.4 3730.8 3731.2 3731.6 3732.0 3732.4 3732.8 3733.2 3733.6 3734.0 3734.4 3734.8 3735.2 3735.6 3736.0 3736.4 3736.8 3737.2 3737.6
3884.0 3884.4 3884.8 3885.2 3885.6 3886.0 3886.4 3886.8 3887.2 3887.6 3888.0 3888.4 3888.8 3889.2 3889.6 3890.0 3890.4 3890.8 3891.2 3891.6 3892.0 3892.4 3892.8 3893.2 3893.6 3894.0 3894.4 3894.8 3895.2 3895.6 3896.0 3896.4 3896.8 3897.2 3897.6
665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699
1880.8 1881.0 1881.2 1881.4 1881.6 1881.8 1882.0 1882.2 1882.4 1882.6 1882.8 1883.0 1883.2 1883.4 1883.6 1883.8 1884.0 1884.2 1884.4 1884.6 1884.8 1885.0 1885.2 1885.4 1885.6 1885.8 1886.0 1886.2 1886.4 1886.6 1886.8 1887.0 1887.2 1887.4 1887.6
1960.8 1961.0 1961.2 1961.4 1961.6 1961.8 1962.0 1962.2 1962.4 1962.6 1962.8 1963.0 1963.2 1963.4 1963.6 1963.8 1964.0 1964.2 1964.4 1964.6 1964.8 1965.0 1965.2 1965.4 1965.6 1965.8 1966.0 1966.2 1966.4 1966.6 1966.8 1967.0 1967.2 1967.4 1967.6
3761.6 3762.0 3762.4 3762.8 3763.2 3763.6 3764.0 3764.4 3764.8 3765.2 3765.6 3766.0 3766.4 3766.8 3767.2 3767.6 3768.0 3768.4 3768.8 3769.2 3769.6 3770.0 3770.4 3770.8 3771.2 3771.6 3772.0 3772.4 3772.8 3773.2 3773.6 3774.0 3774.4 3774.8 3775.2
3921.6 3922.0 3922.4 3922.8 3923.2 3923.6 3924.0 3924.4 3924.8 3925.2 3925.6 3926.0 3926.4 3926.8 3927.2 3927.6 3928.0 3928.4 3928.8 3929.2 3929.6 3930.0 3930.4 3930.8 3931.2 3931.6 3932.0 3932.4 3932.8 3933.2 3933.6 3934.0 3934.4 3934.8 3935.2
759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793
1899.6 1899.8 1900.0 1900.2 1900.4 1900.6 1900.8 1901.0 1901.2 1901.4 1901.6 1901.8 1902.0 1902.2 1902.4 1902.6 1902.8 1903.0 1903.2 1903.4 1903.6 1903.8 1904.0 1904.2 1904.4 1904.6 1904.8 1905.0 1905.2 1905.4 1905.6 1905.8 1906.0 1906.2 1906.4
1979.6 1979.8 1980.0 1980.2 1980.4 1980.6 1980.8 1981.0 1981.2 1981.4 1981.6 1981.8 1982.0 1982.2 1982.4 1982.6 1982.8 1983.0 1983.2 1983.4 1983.6 1983.8 1984.0 1984.2 1984.4 1984.6 1984.8 1985.0 1985.2 1985.4 1985.6 1985.8 1986.0 1986.2 1986.4
3799.2 3799.6 3800.0 3800.4 3800.8 3801.2 3801.6 3802.0 3802.4 3802.8 3803.2 3803.6 3804.0 3804.4 3804.8 3805.2 3805.6 3806.0 3806.4 3806.8 3807.2 3807.6 3808.0 3808.4 3808.8 3809.2 3809.6 3810.0 3810.4 3810.8 3811.2 3811.6 3812.0 3812.4 3812.8
3959.2 3959.6 3960.0 3960.4 3960.8 3961.2 3961.6 3962.0 3962.4 3962.8 3963.2 3963.6 3964.0 3964.4 3964.8 3965.2 3965.6 3966.0 3966.4 3966.8 3967.2 3967.6 3968.0 3968.4 3968.8 3969.2 3969.6 3970.0 3970.4 3970.8 3971.2 3971.6 3972.0 3972.4 3972.8
Page 42
Nokia Corporation
Issue 1 07/04
Nokia Customer Care
RH-37 6(b) - RF Troubleshooting Instructions
DC Supply Voltage Check
For a quick check of DC power supplies, refer to the diagram below. The RF powe