Nokia 3220 Service Manual 06(b) rh37 rf trouble

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Nokia Customer Care

RH-37 Series Transceivers

6(b) - RF Troubleshooting

Instructions

Issue 1 07/04  2004 Nokia Corporation Page 1

Company Confidential

RH-37

6(b) - RF Troubleshooting Instructions Nokia Customer Care

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Nokia Customer Care 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

Issue 1 07/04 Nokia Corporation Page 1

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6(b) - RF Troubleshooting Instructions Nokia Customer Care

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Nokia Customer Care 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 oscillo- scope 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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Test conditions

Rx tuning of the 26 MHz reference oscillator (VCTCXO) is temperature sensitive

because of the estimations of <AFC_value> and <AFC_slope>. 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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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 T

RF Controls F

Select Band GSM 900 or GSM1800 or GSM1900

Active unit RX

Operation mode Burst

RX/TX Channel 37 or 700 or 661

Select Testing T

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RSSI reading R

In the RSSI Reading window, the <measuring mode> shall be set on Sum vector and the <reading mode> 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 <Read now> in RSSI reading.

The resulting RSSI level shall be – 80 dBm +/– 0.5 dB in each band.

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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 <local mode>.

Select Testing T

RF Controls F

Select Band GSM 900 or GSM1800 or GSM1900

Active unit RX

Operation mode Burst

RX/TX Channel 37 or 700 or 661

Select Testing T

SNR Measurement M

Select Measuring mode Fast SNR (Radio Button)

Press Start

The window <Signal Measurement> pops up informing on frequency and power level of the signal generator to be set. Follow the command <Turn ON the RF generator>.

Press <ok> 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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(The example below shows a screen shot in GSM900!)

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 <operating mode> to <local mode>.

Select Testing T

RF Controls F

Select Band GSM 900 or GSM1800 or GSM1900

Active unit RX

Operation mode Continuous

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RX/TX Channel 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 <RXI> respectively <RXQ> 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 <local mode>.

Select Testing T

RF Controls F

Wait until the RF Controls window pops up.

Select Band GSM 900 or GSM1800 or GSM1900

Active unit RX

Operation mode continuous

RX/TX Channel 37 or 700 or 661

AGC 10

The following picture should be displayed on an oscilloscope's screen if the receiver is working properly:

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Signal amplitude 1.40Vpp

DC offset ≈ 1.28V as the offset is floating, switch to the operating mode

<Burst> in Phoenix and read the DC offset

Frequency 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

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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/U

LSB

) - AGC

calibrated

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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Phoenix:

Phone: local mode

Open

Signal Generator:

Phoenix:

Open Check RSSI Level = -80dBm

Execute Rx Calibration in selected band, refer to chapter 9.2.1

re calibration results within limits?

Make sure that

Synthesizer is working

Yes

All 3 bands

RF Controls

Active Unit: Rx Op. Mode: Burst Rx/Tx channel: default (mid)

Level: –80dBm Frequency: calculated from Phoenix + 67.71kHz

RSSI reading

see

Yes next bandNo

Synthesizer Fault Finding Tree

Yes

Selected band is working and calibrated.

re all 3 bands measured?

Yes

Rx chain is functional

and calibrated

Receiver Fault Finding Tree part 1

= To be done in all

three bands.

re all 3 bands measured?

Yes

Are all 3 bands defective?

Yes

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

Continue with single band fault finding.

Check supply filter components (C2233, C7519, C7520) and UEM

Check supply filter components (C2231, C7521) and UEM

Receiver Fault Finding Tree part 2

Receiver Fault Finding Tree part 3

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Oscilloscope:

Check reference voltages of RF part: VrefRF01 = 1.35V ? (TP: VrefRF01*)

Yes

Check supply filter components (R7511, C7524) and UEM

Receiver Fault Finding Tree part 4

Oscilloscope:

Check reference voltages of RF part: VrefRF02 = 1.35V ? (TPs: VrefRF02* and VrefRF02**)

Yes

Phoenix:

Phone: local mode

RF Controls

Active Unit: Rx Op. Mode: Rx/Tx channel: default (mid) AGC: 14

Continuous

Signal Generator:

To be tuned that input power at spectrum analyzer: –60dBm (power at probe:

Frequency: calculated from Phoenix offset: 67.71kHz

= approx. -63 dBm)

Pref

Spectrum Analyzer: 1)

Check Rx/Tx Switch (Diplexer)

Depending on selected band, check level at TPs:

GSM900 output Rx1 Pref -1.5dB ? GSM1800 output Rx2 Pref -2.0dB ? GSM1900 output Rx3 Pref -2.5dB

Yes

Check supply filter

components (R2900, R2901, C2900, C2901) and UEM

Receive Fault Finding Tree part 5

Change Z7800

Note 1): RF levels are dependent on RF probe and have to be validated with a known good sample.

Oscilloscope:

RX IQ levels ok (TPs: RXI, RXQ) ?

Yes

Oscilloscope:

RF-BB serial interface ok?

(TPs: RFBusData, RFBusClk, RFBusEna1)

Yes

Change RF ASIC (Helgo)

BB error: Check UPP

Change RF ASIC (Helgo)

Receiver Fault Finding Tree part 6

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Select faulty band in Phoenix and continue measurements on dedicated Rx part.

Phoenix:

SNR Measurement

open

Meas. Mode: Fast SNR

Measure

Press

Signal Generator:

Level: –92dBm

Frequency: calculated from Phoenix

Phoenix: SNR measurement ok?

(SNR > 18.37dB)?

Phoenix:

Phone: local mode

RF Controls

Active Unit: Rx Op. Mode: Rx/Tx channel: default (mid) AGC: 14

Continuous

Single band fault finding

Yes

Front end is ok.

Phoenix:

Phone: local mode

RF Controls

Active Unit: Rx Op. Mode: Rx/Tx channel: default (mid) AGC: 10

Signal Generator:

Level: –60dBm

Frequency: calculated from Phoenix offset: 67.71kHz

Continue with Rx Fault Finding part 6.

Continuous

Receiver Fault Finding Tree part 7

Receiver Fault Finding Tree part 8

Signal Generator:

To be tuned that input power at spectrum analyser: –60dBm power at probe:

Frequency: calculated from Phoenix offset: 67.71kHz

=approx. -63dBm)

Pref

Spectrum Analyzer: 1)

Center Freq: calculated from Phoenix

RBW 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 ?

Yes

Note 1): RF levels are dependent on RF probe and have to be validated with a known good sample.

Change Rx SAW filters (Z7802, Z7803) or component(s) of matching network depending on selected band

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If selected band = GSM1900

Spectrum Analyzer:

Check SAW filter Z7801:

TP: OUT-Z7801

Output signal > Pref - 3.5dB

Spectrum Analyzer:

Check external LNA V7800:

TP: OUT-V7800

Output signal > Pref +14dB

Spectrum Analyzer:

Check balun T7800 and matching network:

TPs: INM_P_RX / INP_P_RX

Both output signals > Pref +12dB

RF ASIC N7500 seems to be defective. Exchange N7500.

Yes

Oscilloscope:

Check voltages for V7800:

Voltage at C7802 = 2.5V ?

e at C7800 = 0V ?

Volta

Receiver Fault Finding Tree part 9

Change Z7801

Check supply

around V7800

filter components

and RF ASIC

Yes

Note 1): RF levels are dependent on RF probe and have to be validated with a known good sample.

Change T7800

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Make sure that Synthesizer is working and supply voltages of RF ASIC are ok

Phoenix:

Phone: local mode

RF Controls

Active Unit: Rx Op. Mode: Rx/Tx channel: default (mid) AGC: 14

Signal Generator:

Level: –60dBm

Frequency: 942.4MHz

Offset: 67.71kHz

Burst

Continue measurement only when channel select filter calibration failed

Channel select filter fault finding

Receiver Fault Finding Tree part 10

Oscilloscope: RF-BB filter signals ok?

TPs: CM_F_Q & CM_F_I CM_DTOS_Q & CM_DTOS_I

Yes

Repair finished

Re-solder capacitor array C7523

Re-calibrate

Channel Select Filter

Calibration ok ?

NoYes

Change RF ASIC (Helgo)

Make following tunings/calibrations

Tx power l evel tuning

x

Tx IQ tuning

x x Rx calibration

Rx Band Filter Response Calib.

x

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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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GMSK

Set operating mode to local mode.

Select Testing RF Controls

Wait until the RF Controls window pops up

Select Band GSM 900

Active unit TX

Operation mode Burst

RX/TX Channel 37

TX Power Level 10

TX Data Type Random

Edge Off

The setup should now look like this:

Now the measurement equipment should detect the following output signal of the phone:

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= +23dBm @ 897.4 MHz

out

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 GSM 900

Active unit TX

Operation mode Burst

RX/TX Channel 37

TX Power Level 10

TX Data Type All1

Edge On

The setup should now look like this:

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Now the measurement equipment should detect the following output signal of the phone:

= +24.5 dBm @ 897.4 MHz

out

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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GMSK

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

C7530

Yes

Oscilloscope

C7701

VC1 VC2

VC3

R7713

Yes

Spectrum analyzer No Check

Z7700 out, R7704 in RFin_850/

Compare with good

Yes Synthesizer

Mode

VREF01

VR2

TXP

VR5 VR3

TXIOUTP

Vdc = 1.35 Volt Check Vdc = 2.78 Volt No Baseband

V = 1.8 Volt

Vdc = 2.78 Volt Vdc = 2.78 Volt

V = 0 Volt

67kHz

No Check

Vac = 0.45 Vpp, Vdc =

1.2 V

TXIOUTN

67kHz

Baseband

Vac = 0.45 Vpp, Vdc =

1.2 V

TXQOUTP

67kHz

Vac = 0.45 Vpp, Vdc =

1.2 V

TXQOUTN

67kHz

Vac = 0.45 Vpp, Vdc =

1.2 V

VTXB_900

CONT1 CONT2

CONT3

VPCTRL_90

V = 2.78 Volt No Check:

V = 0 Volt Helgo Serial Interface V = 0 Volt Helgo

V = 2.7 Volt

V = 1.17 Volt

P>= 2 dBm, 897.4MHz EGSM TX SAW Filter

900

Helgo

sample

Spectrum analyzer Check PA N7700

Z7800 TX1 (PA N7700

RFOut_850/900)

Power = +24.3 dBm,

No Check Power Loop

(TXC, Vpctrl900, DET)

897.4 MHz Yes

Spectrum analyzer Check

RF@Test-Jig No

Pout

Antenna Switch (Z7800)

= +23 dBm, 897.4 MHz

Yes

GSM900 TX

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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 Check PA N7700

RF@Test-Jig No Check Power Loop

Pout

= +24.5 dBm, 897.4MHz

Yes

GSM900 TX

IREF01

Mode

R7713

(TXC,Rfin 900, DET)

V ~ 1.77 Volt Check

V = 1.8 Volt No Baseband

V= 2.7 V

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 GSM 1800

Active unit TX

Operation mode Burst

RX/TX Channel 700

TX Power Level 5

TX Data Type Random

Edge Off

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The setup should now look like this:

EDGE

Now the measurement equipment should detect the following output signal of the phone:

= +23dBm @ 1747.8 MHz

out

If this is not the case, then go to the GMSK fault finding chart for GSM1800 transmitter.

Set operating mode to local mode.

Select Testing RF Controls

Wait until the RF controls window pops up.

Select Band GSM 1800

Active unit TX

Operation mode Burst

RX/TX Channel 700

TX Power Level 5

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TX Data Type All 1

Edge On

The setup should now look like this:

Now the measurement equipment should detect the following output signal of the phone:

= +21.5 dBm @ 1747.8 MHz

out

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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GMSK

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

C7530

Yes

Oscilloscope

C7709

VC1 VC2

VC3

R7715

Yes

Spectrum analyzer No Check

T7700 out, R7709 in RFin_180

Compare with good

Yes Synthesizer

Spectrum analyzer Check PA N7700

Z7800 TX2 (PA N7700

RFOut_1800/1900)

Power = +21.6 dBm,

1747.8 MHz Yes

Spectrum analyzer Check

RF@Test-Jig No

Pout

= +20 dBm, 1747.8 MHz

Yes

GSM 1800 TX

Mode

VREF01

VR2

TXP

VR5 VR3

TXIOUTP

Vdc = 1.35 Volt Check Vdc = 2.78 Volt No Baseband

V = 1.8 Volt

Vdc = 2.78 Volt Vdc = 2.78 Volt

Vac = 0.4 Vpp, Vdc =

V = 0 Volt

No Check

1.2 V

TXIOUTN

Vac = 0.4 Vpp, Vdc =

Baseband

1.2 V

TXQOUTP

Vac = 0.4 Vpp, Vdc =

1.2 V

TXQOUTN

Vac = 0.4 Vpp, Vdc =

1.2 V

VTXB_1800

_1900 CONT1 CONT2

CONT3

VPCTRL_18

00_1900

V = 2.7 Volt No Check

V = 2.7 Volt Helgo Serial Interface V = 2.7 Volt Helgo

V = 0 Volt

V > 1.14 Volt

P> 2 dBm, 1747.8MHz T7700 Balun

0/1900

Helgo

sample

No Check Power Loop

(TXC, Vpctrl 1800 1900,

DET)

Antenna Switch (Z7800)

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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 Check PA N7700

RF@Test-Jig No Check Power Loop

Pout

= +21.5 dBm, 1747.8

MHz

Yes

GSM 1800 TX

IREF_900

Mode

R7715

(TXC, RFin 1800 1900,

V = 1.83 Volt Check

V = 1.8 Volt No Baseband

Vdc= 2.7 V

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 GSM 1900

Active unit TX

Operation mode Burst

RX/TX Channel 661

TX Power Level 5

TX Data Type Random

Edge Off

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Nokia Customer Care 6(b) - RF Troubleshooting Instructions

The setup should now look like this:

EDGE

Now the measurement equipment should detect the following output signal of the phone:

= +23dBm @ 1880 MHz

out

If this is not the case, then go to the GMSK fault finding chart for GSM1900 transmitter.

Set operating mode to local mode.

Select Testing RF Controls

Wait until the RF Controls window pops up.

Select Band GSM 1900

Active unit TX

Operation mode Burst

RX/TX Channel 661

TX Power Level 5

TX Data Type All1

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6(b) - RF Troubleshooting Instructions Nokia Customer Care

Edge On

The setup should now look like this:

Now the measurement equipment should detect the following output signal of the phone:

= +21.5 dBm @ 1880 MHz

out

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.

Page 30 Nokia Corporation Issue 1 07/04

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Nokia Customer Care 6(b) - RF Troubleshooting Instructions

GMSK

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

C7530

Yes

Oscilloscope

C7709

VC1 VC2

VC3

R7715

Yes

Spectrum analyzer No Check

T7700 out, R7709 in RFin_180

Compare with good

Yes Synthesizer

Spectrum analyzer Check PA N7700

Z7800 TX2 (PA N7700

RFOut_1800/1900)

Power = +21.6 dBm, 1880

MHz

Yes

Spectrum analyzer Check

RF@Test-Jig No

Pout

= +20 dBm, 1880 MHz

Yes

GSM 1900 TX

Mode

VREF01

VR2

TXP

VR5 VR3

TXIOUTP

Vdc = 1.35 Volt Check Vdc = 2.78 Volt No Baseband

V = 1.8 Volt

Vdc = 2.78 Volt Vdc = 2.78 Volt

Vac = 0.4 Vpp, Vdc =

Vdc = 0 Volt

No Check

1.2 V

TXIOUTN

Vac = 0.4 Vpp, Vdc =

Baseband

1.2 V

TXQOUTP

Vac = 0.4 Vpp, Vdc =

1.2 V

TXQOUTN

Vac = 0.4 Vpp, Vdc =

1.2 V

VTXB_1800

_1900 CONT1 CONT2

CONT3

VPCTRL_18

00_1900

V = 2.78 Volt No Check

V = 2.7 Volt Helgo Serial Interface V = 2.7 Volt Helgo

V = 0 Volt

V = 1.12 Volt

P> 2 dBm, 1880 MHz T7700 Balun

0/1900

Helgo

sample

No Check Power Loop

(TXC Vpctrl 1800 1900,

DET)

Antenna Switch (Z7800)

Issue 1 07/04 Nokia Corporation Page 31

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6(b) - RF Troubleshooting Instructions Nokia Customer Care

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 Check PA N7700

RF@Test-Jig No Check Power Loop

Pout

= +21.5 dBm, 1880 MHz

Yes

GSM 1900 TX

IREF_900

Mode

R7715

(TXC, RFin 1800 1900,

V = 1.83 Volt Check

V = 2.78 Volt No Baseband

V= 2.7 V

DET)

Page 32 Nokia Corporation Issue 1 07/04

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Nokia Customer Care 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 <operating mode> to <Local>.

Open window “RF Controls” (menu Testing - RF Controls)

Set the synthesizer to the following mode:

Select Band GSM 1800

Active unit RX

Operation mode Continuous

RX/TX Channel 700

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The setup should now look like this:

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 f

Figure 1: Test holes in the VCO chamber

Tuning voltage Vc @ C7503

Output frequency f

@ R7503

VCO

VCO supply voltage VR7 @ C7500

can be measured.

VCO

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.

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Nokia Customer Care 6(b) - RF Troubleshooting Instructions

Figure 2: VCO probe

The VCO frequency is twice the Rx frequency in the GSM1800 band:

= 2 * fRX = 2 * 1842.8 MHz = 3685.6 MHz

VCO

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 f

= 3685.6MHz.

VCO

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

4000

Frequency [MHz]

3500

3000

00.511.522.533.544.555.56

VCTRL [V]

2.55V @ 24.4 .. 25.4°C 2.7V @ 24.4 .. 25.4°C 2.85V @ 24.4 .. 25.4°C

High limit Low limit

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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

Baseband part is not working,

possible reason: 26MHz missing.

Oscilloscope

VCTCXO output at G7501 26MHz,app.0.8Vpp

Oscilloscope:

Check VCTCXO supply

(VR3=2.78V, this can be checked after power on for a time of about

fter that time the voltage is going

down.)

Yes

Oscilloscope

REFCLK output of N7500: Signal VCTCXO=RFCLK_I at C2902, R2902. 26MHz,app.0.8Vpp

32sec

Yes

Synthesizer Fault Finding Tree part 1

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.

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Nokia Customer Care 6(b) - RF Troubleshooting Instructions

Setup with Phoenix:

Band: GSM 1800 Mode: RX Continuous Channel: 700

Spectrum analyzer

VCO out (G7500)

= 3685.6 MHz

VCO

Vc of VCO = 2.1..2.6V

Spectrum analyzer

VCO out (G7500)

Some signal 3 - 4.4 GHz

Yes

Oscilloscope

VCO tuning voltage

Vc of VCO = 0V

Yes

Oscilloscope

VCO supply

(VR7 = 2.78V)

PLL Block is functional

Yes

Synthesizer Fault Finding Tree part 2

Check R7503 and T7500. Change VCO G7500

Check supply filter components: C2203, R7500, C7500, C7501

Check UEM.

Yes

Oscilloscope

PLL supply

(VR1=4.7V, VR5=2.78V)

Oscilloscope

Check RFBus signals

RFBusClk, RFBusData, RFBusEn1 ok?

Yes

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.

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

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6(b) - RF Troubleshooting Instructions Nokia Customer Care

Frequency tables

GSM900 (including EGSM900)

Fre quency list EGSM900

CH TX RX VCO TX VCO RX CH TX RX VCO TX VCO RX CH TX RX VCO TX VCO RX

975 880.2 925.2 3520.8 3700.8 1 890.2 935.2 3560.8 3740.8 63 902.6 947.6 3610.4 3790.4 976 880.4 925.4 3521.6 3701.6 2 890.4 935.4 3561.6 3741.6 64 902.8 947.8 3611.2 3791.2 977 880.6 925.6 3522.4 3702.4 3 890.6 935.6 3562.4 3742.4 65 903.0 948.0 3612.0 3792.0 978 880.8 925.8 3523.2 3703.2 4 890.8 935.8 3563.2 3743.2 66 903.2 948.2 3612.8 3792.8 979 881.0 926.0 3524.0 3704.0 5 891.0 936.0 3564.0 3744.0 67 903.4 948.4 3613.6 3793.6 980 881.2 926.2 3524.8 3704.8 6 891.2 936.2 3564.8 3744.8 68 903.6 948.6 3614.4 3794.4 981 881.4 926.4 3525.6 3705.6 7 891.4 936.4 3565.6 3745.6 69 903.8 948.8 3615.2 3795.2 982 881.6 926.6 3526.4 3706.4 8 891.6 936.6 3566.4 3746.4 70 904.0 949.0 3616.0 3796.0 983 881.8 926.8 3527.2 3707.2 9 891.8 936.8 3567.2 3747.2 71 904.2 949.2 3616.8 3796.8 984 882.0 927.0 3528.0 3708.0 10 892.0 937.0 3568.0 3748.0 72 904.4 949.4 3617.6 3797.6 985 882.2 927.2 3528.8 3708.8 11 892.2 937.2 3568.8 3748.8 73 904.6 949.6 3618.4 3798.4 986 882.4 927.4 3529.6 3709.6 12 892.4 937.4 3569.6 3749.6 74 904.8 949.8 3619.2 3799.2 987 882.6 927.6 3530.4 3710.4 13 892.6 937.6 3570.4 3750.4 75 905.0 950.0 3620.0 3800.0 988 882.8 927.8 3531.2 3711.2 14 892.8 937.8 3571.2 3751.2 76 905.2 950.2 3620.8 3800.8 989 883.0 928.0 3532.0 3712.0 15 893.0 938.0 3572.0 3752.0 77 905.4 950.4 3621.6 3801.6 990 883.2 928.2 3532.8 3712.8 16 893.2 938.2 3572.8 3752.8 78 905.6 950.6 3622.4 3802.4 991 883.4 928.4 3533.6 3713.6 17 893.4 938.4 3573.6 3753.6 79 905.8 950.8 3623.2 3803.2 992 883.6 928.6 3534.4 3714.4 18 893.6 938.6 3574.4 3754.4 80 906.0 951.0 3624.0 3804.0 993 883.8 928.8 3535.2 3715.2 19 893.8 938.8 3575.2 3755.2 81 906.2 951.2 3624.8 3804.8 994 884.0 929.0 3536.0 3716.0 20 894.0 939.0 3576.0 3756.0 82 906.4 951.4 3625.6 3805.6 995 884.2 929.2 3536.8 3716.8 21 894.2 939.2 3576.8 3756.8 83 906.6 951.6 3626.4 3806.4 996 884.4 929.4 3537.6 3717.6 22 894.4 939.4 3577.6 3757.6 84 906.8 951.8 3627.2 3807.2 997 884.6 929.6 3538.4 3718.4 23 894.6 939.6 3578.4 3758.4 85 907.0 952.0 3628.0 3808.0 998 884.8 929.8 3539.2 3719.2 24 894.8 939.8 3579.2 3759.2 86 907.2 952.2 3628.8 3808.8

999 885.0 930.0 3540.0 3720.0 25 895.0 940.0 3580.0 3760.0 87 907.4 952.4 3629.6 3809.6 1000 885.2 930.2 3540.8 3720.8 26 895.2 940.2 3580.8 3760.8 88 907.6 952.6 3630.4 3810.4 1001 885.4 930.4 3541.6 3721.6 27 895.4 940.4 3581.6 3761.6 89 907.8 952.8 3631.2 3811.2 1002 885.6 930.6 3542.4 3722.4 28 895.6 940.6 3582.4 3762.4 90 908.0 953.0 3632.0 3812.0 1003 885.8 930.8 3543.2 3723.2 29 895.8 940.8 3583.2 3763.2 91 908.2 953.2 3632.8 3812.8 1004 886.0 931.0 3544.0 3724.0 30 896.0 941.0 3584.0 3764.0 92 908.4 953.4 3633.6 3813.6 1005 886.2 931.2 3544.8 3724.8 31 896.2 941.2 3584.8 3764.8 93 908.6 953.6 3634.4 3814.4 1006 886.4 931.4 3545.6 3725.6 32 896.4 941.4 3585.6 3765.6 94 908.8 953.8 3635.2 3815.2 1007 886.6 931.6 3546.4 3726.4 33 896.6 941.6 3586.4 3766.4 95 909.0 954.0 3636.0 3816.0 1008 886.8 931.8 3547.2 3727.2 34 896.8 941.8 3587.2 3767.2 96 909.2 954.2 3636.8 3816.8 1009 887.0 932.0 3548.0 3728.0 35 897.0 942.0 3588.0 3768.0 97 909.4 954.4 3637.6 3817.6 1010 887.2 932.2 3548.8 3728.8 36 897.2 942.2 3588.8 3768.8 98 909.6 954.6 3638.4 3818.4 1011 887.4 932.4 3549.6 3729.6 37 897.4 942.4 3589.6 3769.6 99 909.8 954.8 3639.2 3819.2 1012 887.6 932.6 3550.4 3730.4 38 897.6 942.6 3590.4 3770.4 100 910.0 955.0 3640.0 3820.0 1013 887.8 932.8 3551.2 3731.2 39 897.8 942.8 3591.2 3771.2 101 910.2 955.2 3640.8 3820.8 1014 888.0 933.0 3552.0 3732.0 40 898.0 943.0 3592.0 3772.0 102 910.4 955.4 3641.6 3821.6 1015 888.2 933.2 3552.8 3732.8 41 898.2 943.2 3592.8 3772.8 103 910.6 955.6 3642.4 3822.4 1016 888.4 933.4 3553.6 3733.6 42 898.4 943.4 3593.6 3773.6 104 910.8 955.8 3643.2 3823.2 1017 888.6 933.6 3554.4 3734.4 43 898.6 943.6 3594.4 3774.4 105 911.0 956.0 3644.0 3824.0 1018 888.8 933.8 3555.2 3735.2 44 898.8 943.8 3595.2 3775.2 106 911.2 956.2 3644.8 3824.8 1019 889.0 934.0 3556.0 3736.0 45 899.0 944.0 3596.0 3776.0 107 911.4 956.4 3645.6 3825.6 1020 889.2 934.2 3556.8 3736.8 46 899.2 944.2 3596.8 3776.8 108 911.6 956.6 3646.4 3826.4 1021 889.4 934.4 3557.6 3737.6 47 899.4 944.4 3597.6 3777.6 109 911.8 956.8 3647.2 3827.2 1022 889.6 934.6 3558.4 3738.4 48 899.6 944.6 3598.4 3778.4 110 912.0 957.0 3648.0 3828.0 1023 889.8 934.8 3559.2 3739.2 49 899.8 944.8 3599.2 3779.2 111 912.2 957.2 3648.8 3828.8

0 890.0 935.0 3560.0 3740.0 50 900.0 945.0 3600.0 3780.0 112 912.4 957.4 3649.6 3829.6

51 900.2 945.2 3600.8 3780.8 113 912.6 957.6 3650.4 3830.4 52 900.4 945.4 3601.6 3781.6 114 912.8 957.8 3651.2 3831.2 53 900.6 945.6 3602.4 3782.4 115 913.0 958.0 3652.0 3832.0 54 900.8 945.8 3603.2 3783.2 116 913.2 958.2 3652.8 3832.8 55 901.0 946.0 3604.0 3784.0 117 913.4 958.4 3653.6 3833.6 56 901.2 946.2 3604.8 3784.8 118 913.6 958.6 3654.4 3834.4 57 901.4 946.4 3605.6 3785.6 119 913.8 958.8 3655.2 3835.2 58 901.6 946.6 3606.4 3786.4 120 914.0 959.0 3656.0 3836.0 59 901.8 946.8 3607.2 3787.2 121 914.2 959.2 3656.8 3836.8 60 902.0 947.0 3608.0 3788.0 122 914.4 959.4 3657.6 3837.6 61 902.2 947.2 3608.8 3788.8 123 914.6 959.6 3658.4 3838.4 62 902.4 947.4 3609.6 3789.6 124 914.8 959.8 3659.2 3839.2

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Nokia Customer Care 6(b) - RF Troubleshooting Instructions

GSM1800

CH TX RX VCO TX VCO RX CH TX RX VCO TX VCO RX CH TX RX VCO TX VCO RX CH TX RX VCO TX VCO RX

Frequency list GSM1800

512

1710.2 1805.2 3420.4 3610.4

513

1710.4 1805.4 3420.8 3610.8

514

1710.6 1805.6 3421.2 3611.2

515

1710.8 1805.8 3421.6 3611.6

516

1711.0 1806.0 3422.0 3612.0

517

1711.2 1806.2 3422.4 3612.4

518

1711.4 1806.4 3422.8 3612.8

519

1711.6 1806.6 3423.2 3613.2

520

1711.8 1806.8 3423.6 3613.6

521

1712.0 1807.0 3424.0 3614.0

522

1712.2 1807.2 3424.4 3614.4

523

1712.4 1807.4 3424.8 3614.8

524

1712.6 1807.6 3425.2 3615.2

525

1712.8 1807.8 3425.6 3615.6

526

1713.0 1808.0 3426.0 3616.0

527

1713.2 1808.2 3426.4 3616.4

528

1713.4 1808.4 3426.8 3616.8

529

1713.6 1808.6 3427.2 3617.2

530

1713.8 1808.8 3427.6 3617.6

531

1714.0 1809.0 3428.0 3618.0

532

1714.2 1809.2 3428.4 3618.4

533

1714.4 1809.4 3428.8 3618.8

534

1714.6 1809.6 3429.2 3619.2

535

1714.8 1809.8 3429.6 3619.6

536

1715.0 1810.0 3430.0 3620.0

537

1715.2 1810.2 3430.4 3620.4

538

1715.4 1810.4 3430.8 3620.8

539

1715.6 1810.6 3431.2 3621.2

540

1715.8 1810.8 3431.6 3621.6

541

1716.0 1811.0 3432.0 3622.0

542

1716.2 1811.2 3432.4 3622.4

543

1716.4 1811.4 3432.8 3622.8

544

1716.6 1811.6 3433.2 3623.2

545

1716.8 1811.8 3433.6 3623.6

546

1717.0 1812.0 3434.0 3624.0

547

1717.2 1812.2 3434.4 3624.4

548

1717.4 1812.4 3434.8 3624.8

549

1717.6 1812.6 3435.2 3625.2

550

1717.8 1812.8 3435.6 3625.6

551

1718.0 1813.0 3436.0 3626.0

552

1718.2 1813.2 3436.4 3626.4

553

1718.4 1813.4 3436.8 3626.8

554

1718.6 1813.6 3437.2 3627.2

555

1718.8 1813.8 3437.6 3627.6

556

1719.0 1814.0 3438.0 3628.0

557

1719.2 1814.2 3438.4 3628.4

558

1719.4 1814.4 3438.8 3628.8

559

1719.6 1814.6 3439.2 3629.2

560

1719.8 1814.8 3439.6 3629.6

561

1720.0 1815.0 3440.0 3630.0

562

1720.2 1815.2 3440.4 3630.4

563

1720.4 1815.4 3440.8 3630.8

564

1720.6 1815.6 3441.2 3631.2

565

1720.8 1815.8 3441.6 3631.6

566

1721.0 1816.0 3442.0 3632.0

567

1721.2 1816.2 3442.4 3632.4

568

1721.4 1816.4 3442.8 3632.8

569

1721.6 1816.6 3443.2 3633.2

570

1721.8 1816.8 3443.6 3633.6

606

1729.0 1824.0 3458.0 3648.0

607

1729.2 1824.2 3458.4 3648.4

608

1729.4 1824.4 3458.8 3648.8

609

1729.6 1824.6 3459.2 3649.2

610

1729.8 1824.8 3459.6 3649.6

611

1730.0 1825.0 3460.0 3650.0

612

1730.2 1825.2 3460.4 3650.4

613

1730.4 1825.4 3460.8 3650.8

614

1730.6 1825.6 3461.2 3651.2

615

1730.8 1825.8 3461.6 3651.6

616

1731.0 1826.0 3462.0 3652.0

617

1731.2 1826.2 3462.4 3652.4

618

1731.4 1826.4 3462.8 3652.8

619

1731.6 1826.6 3463.2 3653.2

620

1731.8 1826.8 3463.6 3653.6

621

1732.0 1827.0 3464.0 3654.0

622

1732.2 1827.2 3464.4 3654.4

623

1732.4 1827.4 3464.8 3654.8

624

1732.6 1827.6 3465.2 3655.2

625

1732.8 1827.8 3465.6 3655.6

626

1733.0 1828.0 3466.0 3656.0

627

1733.2 1828.2 3466.4 3656.4

628

1733.4 1828.4 3466.8 3656.8

629

1733.6 1828.6 3467.2 3657.2

630

1733.8 1828.8 3467.6 3657.6

631

1734.0 1829.0 3468.0 3658.0

632

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1876.0 1956.0 3752.0 3912.0

642

1876.2 1956.2 3752.4 3912.4

643

1876.4 1956.4 3752.8 3912.8

644

1876.6 1956.6 3753.2 3913.2

645

1876.8 1956.8 3753.6 3913.6

646

1877.0 1957.0 3754.0 3914.0

647

1877.2 1957.2 3754.4 3914.4

648

1877.4 1957.4 3754.8 3914.8

649

1877.6 1957.6 3755.2 3915.2

650

1877.8 1957.8 3755.6 3915.6

651

1878.0 1958.0 3756.0 3916.0

652

1878.2 1958.2 3756.4 3916.4

653

1878.4 1958.4 3756.8 3916.8

654

1878.6 1958.6 3757.2 3917.2

655

1878.8 1958.8 3757.6 3917.6

656

1879.0 1959.0 3758.0 3918.0

657

1879.2 1959.2 3758.4 3918.4

658

1879.4 1959.4 3758.8 3918.8

659

1879.6 1959.6 3759.2 3919.2

660

1879.8 1959.8 3759.6 3919.6

661

1880.0 1960.0 3760.0 3920.0

662

1880.2 1960.2 3760.4 3920.4

663

1880.4 1960.4 3760.8 3920.8

664

1880.6 1960.6 3761.2 3921.2

Freque ncy list NPL-2 GSM1900

700

1887.8 1967.8 3775.6 3935.6

701

1888.0 1968.0 3776.0 3936.0

702

1888.2 1968.2 3776.4 3936.4

703

1888.4 1968.4 3776.8 3936.8

704

1888.6 1968.6 3777.2 3937.2

705

1888.8 1968.8 3777.6 3937.6

706

1889.0 1969.0 3778.0 3938.0

707

1889.2 1969.2 3778.4 3938.4

708

1889.4 1969.4 3778.8 3938.8

709

1889.6 1969.6 3779.2 3939.2

710

1889.8 1969.8 3779.6 3939.6

711

1890.0 1970.0 3780.0 3940.0

712

1890.2 1970.2 3780.4 3940.4

713

1890.4 1970.4 3780.8 3940.8

714

1890.6 1970.6 3781.2 3941.2

715

1890.8 1970.8 3781.6 3941.6

716

1891.0 1971.0 3782.0 3942.0

717

1891.2 1971.2 3782.4 3942.4

718

1891.4 1971.4 3782.8 3942.8

719

1891.6 1971.6 3783.2 3943.2

720

1891.8 1971.8 3783.6 3943.6

721

1892.0 1972.0 3784.0 3944.0

722

1892.2 1972.2 3784.4 3944.4

723

1892.4 1972.4 3784.8 3944.8

724

1892.6 1972.6 3785.2 3945.2

725

1892.8 1972.8 3785.6 3945.6

726

1893.0 1973.0 3786.0 3946.0

727

1893.2 1973.2 3786.4 3946.4

728

1893.4 1973.4 3786.8 3946.8

729

1893.6 1973.6 3787.2 3947.2

730

1893.8 1973.8 3787.6 3947.6

731

1894.0 1974.0 3788.0 3948.0

732

1894.2 1974.2 3788.4 3948.4

733

1894.4 1974.4 3788.8 3948.8

734

1894.6 1974.6 3789.2 3949.2

735

1894.8 1974.8 3789.6 3949.6

736

1895.0 1975.0 3790.0 3950.0

737

1895.2 1975.2 3790.4 3950.4

738

1895.4 1975.4 3790.8 3950.8

739

1895.6 1975.6 3791.2 3951.2

740

1895.8 1975.8 3791.6 3951.6

741

1896.0 1976.0 3792.0 3952.0

742

1896.2 1976.2 3792.4 3952.4

743

1896.4 1976.4 3792.8 3952.8

744

1896.6 1976.6 3793.2 3953.2

745

1896.8 1976.8 3793.6 3953.6

746

1897.0 1977.0 3794.0 3954.0

747

1897.2 1977.2 3794.4 3954.4

748

1897.4 1977.4 3794.8 3954.8

749

1897.6 1977.6 3795.2 3955.2

750

1897.8 1977.8 3795.6 3955.6

751

1898.0 1978.0 3796.0 3956.0

752

1898.2 1978.2 3796.4 3956.4

753

1898.4 1978.4 3796.8 3956.8

754

1898.6 1978.6 3797.2 3957.2

755

1898.8 1978.8 3797.6 3957.6

756

1899.0 1979.0 3798.0 3958.0

757

1899.2 1979.2 3798.4 3958.4

758

1899.4 1979.4 3798.8 3958.8

794

1906.6 1986.6 3813.2 3973.2

795

1906.8 1986.8 3813.6 3973.6

796

1907.0 1987.0 3814.0 3974.0

797

1907.2 1987.2 3814.4 3974.4

798

1907.4 1987.4 3814.8 3974.8

799

1907.6 1987.6 3815.2 3975.2

800

1907.8 1987.8 3815.6 3975.6

801

1908.0 1988.0 3816.0 3976.0

802

1908.2 1988.2 3816.4 3976.4

803

1908.4 1988.4 3816.8 3976.8

804

1908.6 1988.6 3817.2 3977.2

805

1908.8 1988.8 3817.6 3977.6

806

1909.0 1989.0 3818.0 3978.0

807

1909.2 1989.2 3818.4 3978.4

808

1909.4 1989.4 3818.8 3978.8

809

1909.6 1989.6 3819.2 3979.2

810

1909.8 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

1862.0 1942.0 3724.0 3884.0

572

1862.2 1942.2 3724.4 3884.4

573

1862.4 1942.4 3724.8 3884.8

574

1862.6 1942.6 3725.2 3885.2

575

1862.8 1942.8 3725.6 3885.6

576

1863.0 1943.0 3726.0 3886.0

577

1863.2 1943.2 3726.4 3886.4

578

1863.4 1943.4 3726.8 3886.8

579

1863.6 1943.6 3727.2 3887.2

580

1863.8 1943.8 3727.6 3887.6

581

1864.0 1944.0 3728.0 3888.0

582

1864.2 1944.2 3728.4 3888.4

583

1864.4 1944.4 3728.8 3888.8

584

1864.6 1944.6 3729.2 3889.2

585

1864.8 1944.8 3729.6 3889.6

586

1865.0 1945.0 3730.0 3890.0

587

1865.2 1945.2 3730.4 3890.4

588

1865.4 1945.4 3730.8 3890.8

589

1865.6 1945.6 3731.2 3891.2

590

1865.8 1945.8 3731.6 3891.6

591

1866.0 1946.0 3732.0 3892.0

592

1866.2 1946.2 3732.4 3892.4

593

1866.4 1946.4 3732.8 3892.8

594

1866.6 1946.6 3733.2 3893.2

595

1866.8 1946.8 3733.6 3893.6

596

1867.0 1947.0 3734.0 3894.0

597

1867.2 1947.2 3734.4 3894.4

598

1867.4 1947.4 3734.8 3894.8

599

1867.6 1947.6 3735.2 3895.2

600

1867.8 1947.8 3735.6 3895.6

601

1868.0 1948.0 3736.0 3896.0

602

1868.2 1948.2 3736.4 3896.4

603

1868.4 1948.4 3736.8 3896.8

604

1868.6 1948.6 3737.2 3897.2

605

1868.8 1948.8 3737.6 3897.6

665

1880.8 1960.8 3761.6 3921.6

666

1881.0 1961.0 3762.0 3922.0

667

1881.2 1961.2 3762.4 3922.4

668

1881.4 1961.4 3762.8 3922.8

669

1881.6 1961.6 3763.2 3923.2

670

1881.8 1961.8 3763.6 3923.6

671

1882.0 1962.0 3764.0 3924.0

672

1882.2 1962.2 3764.4 3924.4

673

1882.4 1962.4 3764.8 3924.8

674

1882.6 1962.6 3765.2 3925.2

675

1882.8 1962.8 3765.6 3925.6

676

1883.0 1963.0 3766.0 3926.0

677

1883.2 1963.2 3766.4 3926.4

678

1883.4 1963.4 3766.8 3926.8

679

1883.6 1963.6 3767.2 3927.2

680

1883.8 1963.8 3767.6 3927.6

681

1884.0 1964.0 3768.0 3928.0

682

1884.2 1964.2 3768.4 3928.4

683

1884.4 1964.4 3768.8 3928.8

684

1884.6 1964.6 3769.2 3929.2

685

1884.8 1964.8 3769.6 3929.6

686

1885.0 1965.0 3770.0 3930.0

687

1885.2 1965.2 3770.4 3930.4

688

1885.4 1965.4 3770.8 3930.8

689

1885.6 1965.6 3771.2 3931.2

690

1885.8 1965.8 3771.6 3931.6

691

1886.0 1966.0 3772.0 3932.0

692

1886.2 1966.2 3772.4 3932.4

693

1886.4 1966.4 3772.8 3932.8

694

1886.6 1966.6 3773.2 3933.2

695

1886.8 1966.8 3773.6 3933.6

696

1887.0 1967.0 3774.0 3934.0

697

1887.2 1967.2 3774.4 3934.4

698

1887.4 1967.4 3774.8 3934.8

699

1887.6 1967.6 3775.2 3935.2

759

1899.6 1979.6 3799.2 3959.2

760

1899.8 1979.8 3799.6 3959.6

761

1900.0 1980.0 3800.0 3960.0

762

1900.2 1980.2 3800.4 3960.4

763

1900.4 1980.4 3800.8 3960.8

764

1900.6 1980.6 3801.2 3961.2

765

1900.8 1980.8 3801.6 3961.6

766

1901.0 1981.0 3802.0 3962.0

767

1901.2 1981.2 3802.4 3962.4

768

1901.4 1981.4 3802.8 3962.8

769

1901.6 1981.6 3803.2 3963.2

770

1901.8 1981.8 3803.6 3963.6

771

1902.0 1982.0 3804.0 3964.0

772

1902.2 1982.2 3804.4 3964.4

773

1902.4 1982.4 3804.8 3964.8

774

1902.6 1982.6 3805.2 3965.2

775

1902.8 1982.8 3805.6 3965.6

776

1903.0 1983.0 3806.0 3966.0

777

1903.2 1983.2 3806.4 3966.4

778

1903.4 1983.4 3806.8 3966.8

779

1903.6 1983.6 3807.2 3967.2

780

1903.8 1983.8 3807.6 3967.6

781

1904.0 1984.0 3808.0 3968.0

782

1904.2 1984.2 3808.4 3968.4

783

1904.4 1984.4 3808.8 3968.8

784

1904.6 1984.6 3809.2 3969.2

785

1904.8 1984.8 3809.6 3969.6

786

1905.0 1985.0 3810.0 3970.0

787

1905.2 1985.2 3810.4 3970.4

788

1905.4 1985.4 3810.8 3970.8

789

1905.6 1985.6 3811.2 3971.2

790

1905.8 1985.8 3811.6 3971.6

791

1906.0 1986.0 3812.0 3972.0

792

1906.2 1986.2 3812.4 3972.4

793

1906.4 1986.4 3812.8 3972.8

Page 42 Nokia Corporation Issue 1 07/04

RH-37

Nokia Customer Care 6(b) - RF Troubleshooting Instructions

DC Supply Voltage Check

For a quick check of DC power supplies, refer to the diagram below. The RF power supplies are generated in the UEM and can be measured either in the Small Signal Chamber or in the Base Band Chamber.

The UEM output voltages can be measured at the respective resistors' / capacitors' pads marked below in brackets, e.g. < C1234 >.

UEM

< C7516 >

< C7510 >

< R7516 >

< C7519 >

< C7517 >

VR1

VR2

VR3

VR4

VR5

4.75 V [ 4.6V ... 4.9V ]

charge pump (VCP)

2.78 V [ 2.70V ... 2.86V ]

Tx modulator (Vcc_ModOut)

TX buffer & EDGE ALCs (VRF_TX)

2.78 V [ 2.70V ... 2.86V ]

VCTCXO (+VCC)

digital interface (VDIG)

2.78 V [ 2.70V ... 2.86V ]

Rx Front End (VRF_RX)

Bias & Rx CH filters (VF_RX)

RF controls (VPAB_VLNA)

2.78 V [ 2.70V ... 2.86V ]

PLL prescaler (VPRE)

phasing dividers of Rx (VLO)

< C7521 >

< C7500 >

< R7511/C7516 >

< R2901/C2901 >

AND

VR6

VR7

refRF01

refRF02

2.78 V [ 2.70V ... 2.86V ]

16 mA [max. 20 mA]

1.35 V [ 1.32V ... 1.38V ]

100 uA

1.35 V [ 1.32V ... 1.38V ]

100 uA

BB buffer (VDIG)

VCO (VCC_VCO)

bias reference (VB_EXT)

bias reference

(RXIINN, RXQINN)

< R2900/C2900 >

VBAT

2.7 V [ 2.95V ... 4.7V ]

Triple band PA

Issue 1 07/04 Nokia Corporation Page 43

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6(b) - RF Troubleshooting Instructions Nokia Customer Care

[This page left intentionally blank]

Page 44 Nokia Corporation Issue 1 07/04

Nokia Customer Care

RH-37 Series Transceivers

Appendix 6A: Test Points

Issue 1 07/04 Nokia Corporation

RH-37

Appnedix 6A: Test Points Nokia Customer Care

Receiver test points

B u r s t

V R 6

C o n t i n u o u s

o r

L N A B _ P *

T e s t p o i n t

B a n d G S M 9 0 0

A c t i v e U n i t R X

O p e r a t i o n M o d e

R X / T X C h a n n e l 3 7

D C L e v e l 2 . 8 V

T e s t p o i n t

B a n d G S M 1 9 0 0

A c t i v e U n i t R X

O p e r a t i o n M o d e C o n t i n u o u s

R X / T X C h a n n e l 6 6 1

B u r s t

V R 4

C o n t i n u o u s

T e s t p o i n t

B a n d G S M 9 0 0

A c t i v e U n i t R X

O p e r a t i o n M o d e

R x 3

T e s t p o i n t

B a n d G S M 1 9 0 0

L N A _ P *

o r

T e s t p o i n t

B a n d G S M 1 9 0 0

A c t i v e U n i t R X

O p e r a t i o n M o d e C o n t i n u o u s

R X / T X C h a n n e l 3 7

D C L e v e l 2 . 8 V

A c t i v e U n i t R X

O p e r a t i o n M o d e C o n t i n u o u s

R X / T X C h a n n e l 6 6 1

A G C 1 4

R X / T X C h a n n e l 6 6 1

2 . 5 d B

P r e f 

I n p u t P o w e r  6 0 d B m

I n p u t F r e q u e n c y 1 9 6 0 . 0 6 7 7 1 M H z

P r o b e d P o w e r

T y p .

2 . 5 V

A G C : 1 4

D C L e v e l

T y p .

1 . 8 V

0 V

A G C : 4

D C L e v e l

A G C : 5

D C L e v e l

B u r s t

V r e f R F 0 1 *

C o n t i n u o u s o r

T e s t p o i n t

B a n d G S M 9 0 0

A c t i v e U n i t R X

O p e r a t i o n M o d e

R X / T X C h a n n e l 3 7

D C L e v e l 1 . 3 5 V

1 ) V r e f R F 0 2 *

T e s t p o i n t s

B u r s t

C o n t i n u o u s o r

2 ) V r e f R F 0 2 * *

B a n d G S M 9 0 0

A c t i v e U n i t R X

O p e r a t i o n M o d e

R X / T X C h a n n e l 3 7

D C L e v e l 1 . 3 5 V

O U T - Z 7 8 0 1

T e s t p o i n t

B a n d G S M 1 9 0 0

A c t i v e U n i t R X

O p e r a t i o n M o d e C o n t i n u o u s

R X / T X C h a n n e l 6 6 1

O U T - V 7 8 0 0

T e s t p o i n t

B a n d G S M 1 9 0 0

A c t i v e U n i t R X

O p e r a t i o n M o d e C o n t i n u o u s

R X / T X C h a n n e l 6 6 1

V r e f R F 0 2 *

R 2 9 0 1 / C 2 9 0 1

V r e f R F 0 2 * *

R 2 9 0 0 / C 2 9 0 0

1 ) I N P _ P _ R X

2 ) I N M _ P _ R X

P r e f - 3 . 5 d B

A G C 1 4

I n p u t P o w e r  6 0 d B m

I n p u t F r e q u e n c y 1 9 6 0 . 0 6 7 7 1 M H z

P r o b e d P o w e r

P r e f + 1 4 d B

A G C 1 4

I n p u t P o w e r  6 0 d B m

I n p u t F r e q u e n c y 1 9 6 0 . 0 6 7 7 1 M H z

P r o b e d P o w e r

P r e f - 6 . 5 d B

2 . 0 d B

R x 2

T e s t p o i n t

B a n d G S M 1 8 0 0

A c t i v e U n i t R X

O p e r a t i o n M o d e C o n t i n u o u s

R X / T X C h a n n e l 7 0 0

R x 1

T e s t p o i n t

B a n d G S M 8 5 0 / 9 0 0

A c t i v e U n i t R X

O p e r a t i o n M o d e C o n t i n u o u s

R X / T X C h a n n e l 3 7

P r e f 

A G C 1 4

I n p u t P o w e r  6 0 d B m

I n p u t F r e q u e n c y 1 8 4 2 . 8 6 7 7 1 M H z

P r o b e d P o w e r

1 . 5 . 0 d B

P r e f 

A G C 1 4

I n p u t P o w e r  6 0 d B m

I n p u t F r e q u e n c y 9 4 2 . 4 6 7 7 1 M H z

P r o b e d P o w e r

L a y o u t : 1 c n a _ 4 1 ( B u i l d 4 . 0 )

t y p .  6 3 d B m

P r e f ( d B m )

t y p .  6 3 d B m

P r e f ( d B m )

t y p .  6 3 d B m

A N T ( A n t e n n a F e e d )

R e c e i v e r T e s t P o i n t s ( 1 / 2 )

T e s t p o i n t

B a n d G S M 9 0 0 G S M 1 8 0 0 G S M 1 9 0 0

A c t i v e U n i t R X

O p e r a t i o n M o d e C o n t i n u o u s

R X / T X C h a n n e l 3 7 7 0 0 6 6 1

P r e f ( d B m )

w i t h

A G C 1 4

I n p u t P o w e r  6 0 d B m  6 0 d B m  6 0 d B m

I n p u t F r e q u e n c y 9 4 2 . 4 6 7 7 1 M H z 1 8 4 2 . 8 6 7 7 1 M H z 1 9 6 0 . 0 6 7 7 1 M H z

P r o b e d P o w e r

( e . g . m e a s u r e d

r e s i s t i v e p r o b e , r e f . t o

L 7 8 0 7 / C 7 8 0 6

I N M _ P _ R X

L 7 8 0 7 / C 7 8 0 5

I N P _ P _ R X

L 7 8 0 3

I N P _ D _ R X

L 7 8 0 2

I N M _ D _ R X

L 7 8 0 5

L N A B _ P *

R 7 8 0 1 / C 7 8 0 3

V C 3

V A N T _ 1

V C 1

V A N T _ 2

V C 2

V A N T _ 3

I N M _ G _ R X

L 7 8 0 4

I N P _ G _ R X

L 7 8 0 0 / C 7 8 0 1

O U T - Z 7 8 0 1

V R 6

V R 4

c h a p t e r 5 . 2 )

C 7 5 2 1

C 7 5 1 9

V r e f R F 0 1 *

R 7 5 1 1 / C 7 5 2 4

O U T - V 7 8 0 0

L 7 8 0 1 / C 7 8 0 4 / R 7 8 0 2

R x 3

L N A _ P *

R 7 8 0 0 / C 7 8 0 0

V A N T _ 1 , 2 , 3

T e s t p o i n t

R x 2

( G S M 1 9 0 0 )

( G S M 1 8 0 0 )

( V C 3 )

V A N T _ 3

( V C 1 )

V A N T _ 2

( V C 3 )

V A N T _ 1

B a n d G S M 9 0 0

A c t i v e U n i t R X [ T X ]

O p e r a t i o n M o d e C o n t i n u o u s

R X / T X C h a n n e l 3 7

T e s t p o i n t s

A N T

R x 1

( G S M 8 5 0 / 9 0 0 )

V A N T _ 1 , 2 , 3

T e s t p o i n t

B a n d G S M 1 8 0 0

D C L e v e l 0 V [ 2 . 6 V ] 0 V [ 0 V ] 0 V [ 2 . 6 V ]

A c t i v e U n i t R X [ T X ]

T e s t p o i n t s

B a n d G S M 1 9 0 0

A c t i v e U n i t R X

O p e r a t i o n M o d e C o n t i n u o u s

R X / T X C h a n n e l 6 6 1

A G C 1 4

I n p u t P o w e r  6 0 d B m

I n p u t F r e q u e n c y 1 9 6 0 . 0 6 7 7 1 M H z

P r o b e d P o w e r

D C L e v e l 1 . 6 V

1 ) I N P _ D _ R X

2 ) I N M _ D _ R X

T e s t p o i n t s

B a n d G S M 1 8 0 0

A c t i v e U n i t R X

O p e r a t i o n M o d e C o n t i n u o u s

R X / T X C h a n n e l 7 0 0

G N D

a n d p i n s

( G R O U N D )

m e t a l s h i e l d i n g

1 ) I N P _ G _ R X

2 ) I N M _ G _ R X

T e s t p o i n t s

B a n d G S M 9 0 0

A c t i v e U n i t R X

O p e r a t i o n M o d e C o n t i n u o u s

R X / T X C h a n n e l 3 7

( V C 3 )

V A N T _ 3

( V C 1 )

V A N T _ 2

V A N T _ 1

O p e r a t i o n M o d e C o n t i n u o u s

R X / T X C h a n n e l 7 0 0

T e s t p o i n t s

V A N T _ 1 , 2 , 3

( V C 3 )

D C L e v e l 0 V [ 0 V ] 0 V [ 2 . 6 V ] 0 V [ 2 . 6 V ]

T e s t p o i n t

B a n d G S M 1 9 0 0

P r e f  6 d B

A G C 1 4

I n p u t P o w e r  6 0 d B m

I n p u t F r e q u e n c y 1 8 4 2 . 8 6 7 7 1 M H z

P r o b e d P o w e r

D C L e v e l T y p . 1 . 6 V

P r e f  3 . 5 d B

A G C 1 4

I n p u t P o w e r  6 0 d B m

I n p u t F r e q u e n c y 9 4 2 . 4 6 7 7 1 M H z

P r o b e d P o w e r

D C L e v e l T y p . 1 . 6 V

( V C 3 )

V A N T _ 3

( V C 1 )

V A N T _ 2

( V C 3 )

V A N T _ 1

A c t i v e U n i t R X [ T X ]

O p e r a t i o n M o d e C o n t i n u o u s

R X / T X C h a n n e l 6 6 1

T e s t p o i n t s

D C L e v e l 0 V [ 0 V ] 0 V [ 2 . 6 V ] 2 . 6 V [ 2 . 6 V ]

Page 46 Nokia Corporation Issue 1 07/04

RH-37

( 2 / 2 )

Nokia Customer Care Appnedix 6A: Test Points

R X I

J 1 0 0 5

R X Q

J 1 0 0 4

1 ) R X I

2 ) R X Q

T e s t p o i n t s

B a n d G S M 9 0 0 o r G S M 1 8 0 0 o r G S M 1 9 0 0

A c t i v e U n i t R X

O p e r a t i o n M o d e C o n t i n u o u s

R X / T X C h a n n e l 3 7 o r 7 0 0 o r 6 6 1

C 7 5 2 3

C M _ D T O S _ I

C 7 5 2 3

C M _ D T O S _ Q

C 7 5 2 3

C M _ F _ I

C 7 5 2 3

C M _ F _ Q

1 ) C M _ F _ I

2 ) C M _ F _ Q

T e s t p o i n t s

B a n d G S M 9 0 0 o r G S M 1 8 0 0 o r G S M 1 9 0 0

A c t i v e U n i t R X

A N T

1 . 4 V p p

A G C 1 0

I n p u t P o w e r  6 0 d B m

I n p u t F r e q u e n c y 9 4 2 . 4 6 7 7 1 , 1 8 4 2 . 8 6 7 7 1 o r 1 9 6 0 . 0 6 7 7 1 M H z

S i g n a l

A m p l i t u d e

D C O f f s e t 1 . 2 8 V d c

F r e q u e n c y 6 7 k H z

G r a p h

( t y p i c a l f o r a l l

T P s a n d b a n d s )

A p p r o x . 1 . 7 5 V p p

O p e r a t i o n M o d e B u r s t

R X / T X C h a n n e l 3 7 o r 7 0 0 o r 6 6 1

A G C 1 0

I n p u t P o w e r  6 0 d B m

I n p u t F r e q u e n c y 9 4 2 . 4 6 7 7 1 , 1 8 4 2 . 8 6 7 7 1 o r 1 9 6 0 . 0 6 7 7 1 M H z

S i g n a l

A m p l i t u d e

G r a p h

( t y p i c a l f o r b o t h

T P s a n d a l l

b a n d s )

n t s o

1 ) C M _ D T O S _ I

e s t

2 ) C M _ D T O S _ Q

A p p r o x . 2 V p p

v e r

T e s t p o i n t s

B a n d G S M 9 0 0 o r G S M 1 8 0 0 o r G S M 1 9 0 0

A c t i v e U n i t R X

O p e r a t i o n M o d e B u r s t

R X / T X C h a n n e l 3 7 o r 7 0 0 o r 6 6 1

A G C 1 4

I n p u t P o w e r  6 0 d B m

I n p u t F r e q u e n c y 9 4 2 . 4 6 7 7 1 , 1 8 4 2 . 8 6 7 7 1 o r 1 9 6 0 . 0 6 7 7 1 M H z

S i g n a l

A m p l i t u d e

G r a p h

( t y p i c a l f o r b o t h

T P s a n d a l l

b a n d s )

e c e

Issue 1 07/04 Nokia Corporation Page 47

RH-37

Appnedix 6A: Test Points Nokia Customer Care

Transmitter test points

VR3

Testpoint

Band GSM900

Active Unit TX

Operation Mode Burst

RX/TX Channel 37

DC Level 2.8V

GMSK ( EDGE = OFF ) 8-PSK ( EDGE = ON )

Burst Burst

Modulation

Band GSM 850 or 90 0 or 1800 or 1900 GSM 850 or 900 or 1800 or 1900

Active Unit TX TX

Operation

Mode

Test point TXC TXC

Graph

e.g.

GSM900 PL10

TXIP (R713/1)

TXIM (R713/3)

TXIP (R713/7)

TXQM (R713/5))

Testpoints

Band GSM 850 or 900 or GSM1800 or GSM1900

Active Unit TX

Operation Mode Burst

RX/TX Channel 190 or 37 or 700 o r 661

Tx Data Type Random

Tx Power Level any

Tx2

Tx1

Rx3

Transmitter Test Points (1/3)

Rx2

Rx1

VANT

Test points: RFout_900 and RFout_1800/1900

Matrix Antenna Switch Module Z7800

VANT

RFout

520mVpp

Signal

Amplitude

/1900

_1800

_900

VC3

VC2

VC1

[Volt]

Test point VTXB_900 VTXB_900

Graph e.g.

GSM900 PL10

Test point VPctrl_9 00 VPctrl_900

Graph

e.g.

GSM900 PL10

Test point VDET

VREF01

Testpoint

Band GSM900

Active Unit TX

Operation Mode Burst

RX/TX Channel 37

DC Level 1.35V

Layout: 1cna_41 (Build 4.0)

TXA

VPCTRL_1800_1900

VBAT

DC Offset 1.2Vdc

Graph

(typical for all

TPs and bands)

1800

GSM

/1900

850

/900

GSM

1900

GSM

1800

GSM

850

/900

GSM

[Volt]

0 0 0 X

0 0 0

VR2 (C7512)

Testpoint

Band GSM900/1800/1900

VBAT

0 2.6 2.6

0 2.6 0

2.6 2.6 0

Testpoint

Band GSM900

Active Unit TX

Operation Mode Burst

RX/TX Channel 37

DC Level 2.8V

Operation Mode Burst

RX/TX Channel 37

DC Level Typ. 3.6V

RFin_1800_1900

VTXB_1800_1900

VTXB_900

VR3

RFin_900 P

RFin_1800_1900 P

TXC

RFin_900 M

RFin_1800_1900 M

VR2

TXQP

TXQM

(C7530)

TXIP

TXIM

(C7529)

VrefRF01*

VPCTRL_900

RFin_900

MODE

Iref_900

Iref_1800_1900 DETRFout_900

RFout_1800_1900

ANT

Page 48 Nokia Corporation Issue 1 07/04

RH-37

Nokia Customer Care Appnedix 6A: Test Points

+ 2 d B m

+ d B m

1 . R F i n _ 9 0 0 P

2 . R F i n _ 9 0 0 M

T e s t p o i n t

B a n d G S M 8 5 0 o r 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n G M S K ( E d g e = o f f )

R X / T X C h a n n e l 1 9 0 o r 3 7

T x P o w e r L e v e l 1 0

T x D a t a T y p e A l l 1

P o w e r @ 5 0 O h m s

P o w e r @ p r o b e

+ 2 d B m

+ d B m

R F i n _ 9 0 0

1 . R F i n _ 1 8 0 0 _ 1 9 0 0 P

2 . R F i n _ 1 8 0 0 _ 1 9 0 0 M

T e s t p o i n t

B a n d G S M 1 8 0 0 o r 1 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n G M S K ( E d g e = o f f )

R F i n _ 1 8 0 0 _ 1 9 0 0

L a y o u t : 1 c n a _ 4 1 ( B u i l d 4 . 0 )

V P C T R L _ 1 8 0 0 _ 1 9 0 0

T X A

T e s t p o i n t

B a n d G S M 8 5 0 o r 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n G M S K ( E d g e = o f f )

R X / T X C h a n n e l 1 9 0 o r 3 7

T x P o w e r L e v e l 1 0

T x D a t a T y p e A l l 1

P o w e r @ 5 0 O h m s

P o w e r @ p r o b e

T e s t p o i n t

B a n d G S M 1 8 0 0 o r 1 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n G M S K ( E d g e = o f f )

V B A T

V P C T R L _ 9 0 0

+ 0 d B m

R X / T X C h a n n e l 7 0 0 o r 6 6 1

T x P o w e r L e v e l 5

T x D a t a T y p e A l l 1

P o w e r @ 5 0 O h m s

+ 2 d B m

R X / T X C h a n n e l 7 0 0 o r 6 6 1

T x P o w e r L e v e l 5

T x D a t a T y p e A l l 1

P o w e r @ 5 0 O h m s

+ d B m

P o w e r @ p r o b e

+ d B m

P o w e r @ p r o b e

R F i n _ 1 8 0 0 _ 1 9 0 0

+ d B m

R F o u t _ 9 0 0

+ 2 4 . 3 d B m

R F i n _ 9 0 0

R F o u t _ 1 8 0 0 _ 1 9 0 0

M O D E

I r e f _ 9 0 0

+ d B m

+ 2 1 . 6 d B m

V T X B _ 1 8 0 0 _ 1 9 0 0

T e s t p o i n t

B a n d G S M 8 5 0 o r 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n G M S K ( E d g e = o f f )

R X / T X C h a n n e l 1 9 0 o r 3 7

T x P o w e r L e v e l 1 0

T x D a t a T y p e A l l 1

P o w e r @ 5 0 O h m s

P o w e r @ p r o b e

V T X B _ 9 0 0

T X C

T e s t p o i n t

B a n d G S M 1 8 0 0 o r 1 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n G M S K ( E d g e = o f f )

R X / T X C h a n n e l 7 0 0 o r 6 6 1

T x P o w e r L e v e l 5

T x D a t a T y p e A l l 1

P o w e r @ 5 0 O h m s

P o w e r @ p r o b e

I r e f _ 1 8 0 0 _ 1 9 0 0 D E TR F o u t _ 9 0 0

V R 3

+ 2 0 d B m

+ 2 3 d B m

+ d B m

R F i n _ 9 0 0 P

A N T

R F i n _ 9 0 0 M

A N T

+ d B m

R F o u t _ 1 8 0 0 _ 1 9 0 0

T e s t p o i n t

B a n d G S M 8 5 0 o r 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n G M S K ( E d g e = o f f )

R X / T X C h a n n e l 1 9 0 o r 3 7

T x P o w e r L e v e l 1 0

T x D a t a T y p e A l l 1

P o w e r @ 5 0 O h m s

P o w e r @ p r o b e

V R 2

T X Q P

T X Q M

R F i n _ 1 8 0 0 _ 1 9 0 0 P

R F i n _ 1 8 0 0 _ 1 9 0 0 M

( C 7 5 3 0 )

T X I P

T X I M

( C 7 5 2 9 )

V r e f R F 0 1 *

A N T

T e s t p o i n t

B a n d G S M 1 8 0 0 o r 1 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n G M S K ( E d g e = o f f )

R X / T X C h a n n e l 7 0 0 o r 6 6 1

T x P o w e r L e v e l 5

T x D a t a T y p e A l l 1

P o w e r @ 5 0 O h m s

P o w e r @ p r o b e

R F @ T e s t - J i g

T e s t p o i n t

B a n d G S M 8 5 0 o r 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

m e a s u r e m e n t w i t h t h e 5 0 O h m s p o w e r m e a s u r e m e n t .

P o w e r m e a s u r e m e n t s a t t h e t e s t p o i n t s b y m e a n s o f a p r o b e w i t h 4 7 0 ( ! ) O h m s a t t h e p e a k o n l y . G a i n s o r l o s s e s o f t h e k e y c o m p o n e n t s d e t e c t e d w i t h t h e p r o b e s h a l l b e c o m p a r a b l e t o t h e

M o d u l a t i o n G M S K ( E d g e = o f f )

T y p . + 2 3 d B m

R X / T X C h a n n e l 1 9 0 o r 3 7

T x P o w e r L e v e l 1 0

T x D a t a T y p e A l l 1

P o w e r @ 5 0 O h m

L o s s e s o f j i g c o m p e n s a t e d

R F @ T e s t - J i g

T e s t p o i n t

B a n d G S M 1 8 0 0 o r 1 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n G M S K ( E d g e = o f f )

T y p . + 2 0 d B m

R X / T X C h a n n e l 7 0 0 o r 6 6 1

T x P o w e r L e v e l 5

T x D a t a T y p e A l l 1

P o w e r @ 5 0 O h m s

Issue 1 07/04 Nokia Corporation Page 49

L o s s e s o f j i g c o m p e n s a t e d

RH-37

Appnedix 6A: Test Points Nokia Customer Care

- 1 5  - 8 d B m

1 . R F i n _ 9 0 0 P

2 . R F i n _ 9 0 0 M

T e s t p o i n t

B a n d G S M 8 5 0 o r 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n 8 - P S K ( E d g e = o n )

R X / T X C h a n n e l 1 9 0 o r 3 7

R F i n _ 9 0 0

T e s t p o i n t

B a n d G S M 8 5 0 o r 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n 8 - P S K ( E d g e = o n )

R X / T X C h a n n e l 1 9 0 o r 3 7

d B m

1 . R F i n _ 1 8 0 0 _ 1 9 0 0 P

B O M 1 , B O M 2 , B O M 2 b

I r e f _ 9 0 0

T x P o w e r L e v e l 1 0

T x D a t a T y p e A l l 1

P o w e r @ 5 0 O h m s

P o w e r @ p r o b e

d B m

- 1 5  - 8 d B m

G S M 8 5 0 o r 9 0 0

T e s t p o i n t

B a n d

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n 8 - P S K ( E d g e = o n )

R X / T X C h a n n e l 1 9 0 o r 3 7

T x P o w e r L e v e l 1 0

T x D a t a T y p e A l l 1

U s e s a m e t e s t p o i n t

I r e f _ 9 0 0 f o r h i g h e r G S M

I r e f _ 1 8 0 0 _ 1 9 0 0 ( B O M 1 )

I r e f _ 9 0 0 ( B O M 2 , B O M 2 b )

b a n d s i n c a s e o f B O M 2

a n d B O M 2 b !

G S M 1 8 0 0 o r 1 9 0 0

V o l t a g e 1 . 9 2 V ( B u r s t )

T e s t p o i n t

R E M A R K

B a n d

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n 8 - P S K ( E d g e = o n )

R X / T X C h a n n e l 7 0 0 o r 6 6 1

T x P o w e r L e v e l 1 0

T x D a t a T y p e A l l 1

V o l t a g e 2 . 0 V ( B u r s t )

2 . R F i n _ 1 8 0 0 _ 1 9 0 0 M

T e s t p o i n t

B a n d G S M 1 8 0 0 o r 1 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n 8 - P S K ( E d g e = o n )

R F i n _ 1 8 0 0 _ 1 9 0 0

- 1 8  - 1 0 d B m

R X / T X C h a n n e l 7 0 0 o r 6 6 1

T x P o w e r L e v e l 5

T x D a t a T y p e A l l 1

P o w e r @ 5 0 O h m s

- 1 6  - 8 d B m

L a y o u t : 1 c n a _ 4 1 ( B u i l d 4 . 0 )

V P C T R L _ 1 8 0 0 _ 1 9 0 0

T x P o w e r L e v e l 1 0

T x D a t a T y p e A l l 1

P o w e r @ 5 0 O h m s

P o w e r @ p r o b e

T X A

T e s t p o i n t

B a n d G S M 1 8 0 0 o r 1 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n 8 - P S K ( E d g e = o n )

R X / T X C h a n n e l 7 0 0 o r 6 6 1

T x P o w e r L e v e l 5

T x D a t a T y p e A l l 1

P o w e r @ 5 0 O h m s

d B m

P o w e r @ p r o b e

d B m

P o w e r @ p r o b e

V B A T

V P C T R L _ 9 0 0

+ 2 5 . 8 d B m

R F o u t _ 9 0 0

T e s t p o i n t

B a n d G S M 8 5 0 o r 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n 8 - P S K ( E d g e = o n )

R X / T X C h a n n e l 1 9 0 o r 3 7

+ d B m

T x P o w e r L e v e l 1 0

T x D a t a T y p e A l l 1

P o w e r @ 5 0 O h m s

P o w e r @ p r o b e

R F i n _ 1 8 0 0 _ 1 9 0 0

V T X B _ 1 8 0 0 _ 1 9 0 0

V T X B _ 9 0 0

T X C

V R 3

+ 2 4 . 5 d B m

A N T

T e s t p o i n t

B a n d G S M 8 5 0 o r 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n 8 - P S K ( E d g e = o n )

R X / T X C h a n n e l 1 9 0 o r 3 7

+ d B m

R F i n _ 9 0 0 P

T x P o w e r L e v e l 1 0

T x D a t a T y p e A l l 1

P o w e r @ 5 0 O h m s

P o w e r @ p r o b e

R F i n _ 9 0 0 M

V R 2

T X Q P

T X Q M

R F i n _ 1 8 0 0 _ 1 9 0 0 P

R F i n _ 1 8 0 0 _ 1 9 0 0 M

( C 7 5 3 0 )

T X I P

T X I M

( C 7 5 2 9 )

V r e f R F 0 1 *

R F i n _ 9 0 0

+ 2 3 . 1 d B m

R F o u t _ 1 8 0 0 _ 1 9 0 0

M O D E

I r e f _ 9 0 0

T e s t p o i n t

B a n d G S M 1 8 0 0 o r 1 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n 8 - P S K ( E d g e = o n )

R X / T X C h a n n e l 7 0 0 o r 6 6 1

+ d B m

T x P o w e r L e v e l 5

T x D a t a T y p e A l l 1

P o w e r @ 5 0 O h m s

P o w e r @ p r o b e

I r e f _ 1 8 0 0 _ 1 9 0 0 D E TR F o u t _ 9 0 0

+ d B m

A N T

R F o u t _ 1 8 0 0 _ 1 9 0 0

T e s t p o i n t

B a n d G S M 1 8 0 0 o r 1 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n 8 - P S K ( E d g e = o n )

+ 2 1 . 5 d B m

R X / T X C h a n n e l 7 0 0 o r 6 6 1

T x P o w e r L e v e l 5

T x D a t a T y p e A l l 1

P o w e r @ 5 0 O h m s

P o w e r @ p r o b e

A N T

R F @ T e s t - J i g

T e s t p o i n t

B a n d G S M 8 5 0 o r 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

m e a s u r e m e n t w i t h t h e 5 0 O h m s p o w e r m e a s u r e m e n t .

M o d u l a t i o n 8 - P S K ( E d g e = o n )

T y p . + 2 4 . 5 d B m

M O D E

R X / T X C h a n n e l 1 9 0 o r 3 7

T x P o w e r L e v e l 1 0

T x D a t a T y p e A l l 1

P o w e r @ 5 0 O h m s

L o s s e s o f j i g c o m p e n s a t e d

T e s t p o i n t

B a n d G S M 8 5 0 / 9 0 0 / 1 8 0 0 / 1 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n 8 - P S K ( E d g e = o n )

R X / T X C h a n n e l 1 9 0 o r 3 7 o r 7 0 0 o r 6 6 1

T x P o w e r L e v e l 1 0

T x D a t a T y p e A l l 1

V o l t a g e 1 . 9 6 V ( B u r s t )

R F @ T e s t - J i g

T e s t p o i n t

B a n d G S M 1 8 0 0 o r 1 9 0 0

A c t i v e U n i t T X

O p e r a t i o n M o d e B u r s t

M o d u l a t i o n 8 - P S K ( E d g e = o n )

+ 2 1 . 5 d B m

R X / T X C h a n n e l 7 0 0 o r 6 6 1

T x P o w e r L e v e l 5

T x D a t a T y p e A l l 1

P o w e r @ 5 0 O h m s

L o s s e s o f j i g c o m p e n s a t e d

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RH-37

Nokia Customer Care Appnedix 6A: Test Points

Synthesizer test points

M e a s u r e d u s i n g t h e s p e c i a l p r o b e w i t h

~ 0 d B m ~ 0 d B m ~ 0 d B m

c a p a c i t i v e c o u p l i n g . N o e x a c t p o w e r

T a k e c a r e t o s e l e c t t h e h i g h e s t P C L 1 5 i f

a c t i v a t i n g T X C o n t i n u o u s m o d e , o t h e r w i s e

t h e p o w e r a m p l i f i e r w i l l b e d e s t r o y e d .

T e s t p o i n t A F C ( V c o f V C T C X O )

B a n d d e f a u l t

A c t i v e U n i t R X

O p e r a t i o n M o d e C o n t i n u o u s

R X / T X C h a n n e l a n y

A F C ( v a l u e ) - 1 0 2 4 1 5 0 1 0 2 3

A F C v o l t a g e 0 . 1 V 1 . 4 V 2 . 5 V

T e s t p o i n t V c o f V C O

B a n d G S M 1 8 0 0 G S M 1 9 0 0 G S M 1 9 0 0

A c t i v e U n i t T X T X R X

O p e r a t i o n M o d e C o n t i n u o u s

R X / T X C h a n n e l 5 1 2 5 1 2 8 1 0

F r e q u e n c y 3 4 2 0 . 4 M H z 3 7 0 0 . 4 M H z 3 9 7 9 . 6 M H z

D C L e v e l ~ 1 . 3 V ~ 2 . 5 V ~ 3 . 6 V

T e s t p o i n t V R 1 V r e f R F 0 1 V r e f R F 0 2

B a n d d e f a u l t ( G S M 9 0 0 o r G S M 8 5 0 )

A c t i v e U n i t R x

O p e r a t i o n M o d e B u r s t o r C o n t i n u o u s

R X / T X C h a n n e l d e f a u l t

D C L e v e l 4 . 7 6 1 . 3 5 V 1 . 3 5 V

T e s t p o i n t V R 3 V R 5 V R 7

B a n d d e f a u l t ( G S M 9 0 0 o r G S M 8 5 0 )

A c t i v e U n i t R x

O p e r a t i o n M o d e B u r s t o r C o n t i n u o u s

R X / T X C h a n n e l d e f a u l t

D C L e v e l 2 . 7 8 V 2 . 7 8 V 2 . 7 8 V

R F B u s C l k , R F B u s D a t a , R F B u s E n a 1

~ 2 V

N o t e

( C 2 9 0 2 / R 2 9 0 2 )

R F C L K _ I

T e s t p o i n t V C O o u t

B a n d G S M 1 8 0 0 G S M 1 9 0 0 G S M 1 9 0 0

A c t i v e U n i t T X T X R X

O p e r a t i o n M o d e C o n t i n u o u s

R X / T X C h a n n e l 5 1 2 5 1 2 8 1 0

F r e q u e n c y 3 4 2 0 . 4 M H z 3 7 0 0 . 4 M H z 3 9 7 9 . 6 M H z

L e v e l

m e a s u r e m e n t p o s s i b l e .

( s p e c . r a n g e =

N o t e s

- 3 . 5  + 2 . 5 d B m )

T a k e c a r e t o s e l e c t t h e h i g h e s t P C L 1 5 i f

a c t i v a t i n g T X C o n t i n u o u s m o d e , o t h e r w i s e

t h e p o w e r a m p l i f i e r w i l l b e d e s t r o y e d .

R F B u s C l k ( J 1 0 0 1 )

T e s t p o i n t

B a n d d e f a u l t ( G S M 9 0 0 o r G S M 8 5 0 )

A c t i v e U n i t R X

O p e r a t i o n M o d e B u r s t

R X / T X C h a n n e l d e f a u l t

S i g n a l

A m p l i t u d e

G r a p h

R F B u s C l k

R F B u s D a t a R F B u s E n a 1

R F B u s D a t a ( J 1 0 0 3 )

R F B u s E n a 1 ( J 1 0 0 2 )

V R 1 V R 5

V R 3

2 6 M H z

V C T C X O o u t

L a y o u t : 1 c n a _ 4 1 ( B u i l d 4 . 0 )

V C T C X O o u t ( R E F C L K )

T e s t p o i n t

B a n d d e f a u l t

S y n t h e s i z e r T e s t P o i n t s ( 1 / 1 )

8 8 0 m V p p

A c t i v e U n i t R X

O p e r a t i o n M o d e C o n t i n u o u s

R X / T X C h a n n e l d e f a u l t

S i g n a l

A m p l i t u d e

D C O f f s e t 1 . 5 V

F r e q u e n c y 2 6 M H z

G r a p h

m e a s u r e d w i t h p a s s i v e p r o b e 1 0 x , 1 0 M o h m / 8 p F , A C c o u p l e d )

A F C ( G 7 5 0 1 )

V c o f V C T C X O

V c o f V C O

( C 7 5 0 3 )

V C O o u t

3 . . 4 . 5 G H z

V r e f R F 0 1

V R 7 ( C 7 5 0 0 )

Issue 1 07/04 Nokia Corporation Page 51

RH-37

Appnedix 6A: Test Points Nokia Customer Care

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Page 52 Nokia Corporation Issue 1 07/04

Nokia 3220 Service Manual 06(b) rh37 rf trouble

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

General Information on RF Troubleshooting

Test environment

Test conditions

Receiver Verification and Troubleshooting

General instructions for RX troubleshooting

Measuring RX I/Q signals using RSSI reading

Measuring RX performance using SNR measurement

Measuring front-end power levels using spectrum analyzer

Measuring analogue RX I/Q signals using oscilloscope

Fault finding chart of the receiver

Transmitter

General instructions for TX troubleshooting

GSM900 transmitter

General instructions for GSM TX troubleshooting

Fault finding chart for GSM900 transmitter

GSM1800 transmitter

General instructions for GSM1800 TX troubleshooting

Fault finding chart for GSM1800 transmitter

GSM1900 transmitter

General instructions for GSM1900 TX troubleshooting

Fault finding chart for GSM1900 transmitter

Synthesizer

General instructions for synthesizer troubleshooting

Checking synthesizer operation

Fault finding chart for PLL synthesizer

Frequency tables

GSM900 (including EGSM900)

GSM1800

GSM1900

DC Supply Voltage Check

Appendix 6A: Test Points

Receiver test points

Transmitter test points

Synthesizer test points