Nokia N-GageQDa Service Manual 07 rh47 RF.book

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Nokia Customer Care

RH-47 Series Cellular Phones

7 - RF Description and

Troubleshooting

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Page No

Abbreviations............................................................................................................................................ 5

Introduction to RF ................................................................................................................................... 6

RF power supply configuration .........................................................................................................9

General specifications of transceiver RH-47 ..............................................................................10

Introduction to RF Troubleshooting ................................................................................................ 11

Printed Wired Board ............................................................................................................................ 12

RF key component placement .........................................................................................................12

RF test points .......................................................................................................................................13

Test points RF supply voltages.................................................................................................... 14

RF test points Mjoelner chamber............................................................................................... 15

RF test points VCO chamber........................................................................................................ 15

RF test points PA chamber........................................................................................................... 16

Test points BB area......................................................................................................................... 16

Receiver Troubleshooting ................................................................................................................... 17

General instructions for RX troubleshooting ..............................................................................17

Measuring RX I/Q signals using RSSI reading ........................................................................ 17

Measuring RX performance using SNR measurement ......................................................... 18

Measuring front-end power levels using spectrum analyzer............................................. 20

Measuring analogue RX I/Q signals using oscilloscope....................................................... 21

Receiver troubleshooting .................................................................................................................22

Rx signal paths ....................................................................................................................................23

Antenna switch (RX/TX Switch).................................................................................................. 24

RX front-end .................................................................................................................................... 24

RX paths of Mjoelner RF ASIC..................................................................................................... 25

Transmitter ............................................................................................................................................. 26

General instructions for TX troubleshooting ..............................................................................26

TX signal paths ....................................................................................................................................26

Antenna switch (TX/RX switch) .................................................................................................. 28

GSM850 transmitter ..........................................................................................................................28

General instructions for GSM850 TX troubleshooting......................................................... 28

Troubleshooting for GSM850 transmitter ............................................................................... 29

GSM1900 (PCS) transmitter ............................................................................................................31

General instructions for GSM1900 TX troubleshooting ...................................................... 31

Troubleshooting for GSM1900 transmitter............................................................................. 32

Synthesizer ............................................................................................................................................. 35

General instructions for synthesizer troubleshooting ..............................................................35

Checking synthesizer operation .....................................................................................................35

26 MHz reference oscillator (VCXO) .............................................................................................36

VCO .........................................................................................................................................................37

Troubleshooting for PLL synthesizer .............................................................................................37

Frequency lists .....................................................................................................................................39

GSM850............................................................................................................................................. 39

GSM1900 .......................................................................................................................................... 40

DC Supply Current Check ................................................................................................................... 42

Phoenix Tunings after Repairs .......................................................................................................... 43

APPENDIX A: FLALI Test Cases with Hints for Repair................................................................. 44

APPENDIX B: FINUI Test Cases with Hints for Repair ................................................................ 50

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APPENDIX C: Component Placement with Test Points & Detailed Description.................. 59

APPENDIX D: Calibration of the DA-17/JXS-2 jig, Autotuning and BT Testing.................. 65

Requirements .......................................................................................................................................65

Calibration Problems .........................................................................................................................65

Active calibration: basic idea ..........................................................................................................65

Calibration procedure setup MJ-21 ..............................................................................................65

Data acquisition MJ-21 ....................................................................................................................66

MJ-21 TX power measurement ......................................................................................................67

MJ-21 GSM850 power measurement ..........................................................................................67

MJ-21 GSM1900 power measurement ........................................................................................68

MJ-21 receiver RSSI measurement ...............................................................................................68

MJ-21 RSSI procedure ......................................................................................................................68

MJ-21 RSSI values .............................................................................................................................69

MJ-21 example figures .....................................................................................................................70

JXS-2 / DA-17 “blackbox” setup ....................................................................................................70

Data acquisition JXS-2 / DA-17 .....................................................................................................70

DA-17/JXS-2 example figures ........................................................................................................71

Setting cable loss for Auto-Tuning ...............................................................................................71

Setting DA-17/JXS-2 calibration loss ...........................................................................................72

Assigning the product to the jig ....................................................................................................73

GPIB Setup for Autotuning ..............................................................................................................73

Autotuning ...........................................................................................................................................74

Bluetooth test setup ..........................................................................................................................75

Bluetooth testing ................................................................................................................................75

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Abbreviations

BB Baseband

PCS GSM1900

GSM GSM850

ESD Electro Static Discharge

GPRS General Packed Radio Service

HSCSD High Speed Circuit Switched Data

LNA Low Noise Amplifier

LO Local Oscillator

PA Power Amplifier

PWB Printed Wired Board

PLL Phase Locked Loop

RF Radio Frequency

RX Receiver

SA Spectrum Analyzer

TX Transmitter

VCO Voltage Controlled Oscillator

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Introduction to RF

The RF front-end is a dual-band direct conversion transceiver. Using direct conversion, no intermediate frequencies are used for up- or down -conversions.

The VCO oscillates on the doubled respectively quadruplicated frequency of the wanted RX or TX frequency, depending on the band used. The VCO frequency is divided by either 2 or 4 and fed to the mixers (down-conversion) or modulators (up-conversion). Up- or down-conversion is done in one step, directly between RF frequency and base band. All up- and down-conversion takes place in the RF ASIC named Mjoelner (N601).

Mjoelner RF ASIC also contains PLL and LNAs for all used bands. ADC control section is included to power and/or control GSM850 TX buffer, detector and antenna switch. The Mjoelner RF ASIC is controlled via a serial bus.

Mjoelner RF ASIC contains an integrated VCXO which uses an external 26 MHz Xtal. No analogue AFC signal is needed. AFC is realized via the serial interface port of Mjoelner.

The UPP is supplied by the 26 MHz reference clock of Mjoelner.

The phone supports GPRS (General Packet Radio Service), meaning multi-slot operation. This will not require special equipment or procedures in repair situations.

The following diagrams show the RF frequency scheme and the RF block diagram.

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Figure 1: RF frequency scheme

869 - 894

MHz

1930 - 1990

MHz

F/4

F/2

F/4F/2

PLL

MHz

3296

- 3980 MHz

X-

tal

26 MHz

BB clk

824 - 849

MHz

1850 - 1910

MHz

Mjoelner

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Figure 2: RF block diagram

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RF power supply configuration

All power supplies for the RF Unit are generated in the UEM IC (D190). All RF supplies can be checked either in Mjoelner or in BB chamber.

The power supply configuration used is shown in the block diagram below. Values of voltages are given as nominal outputs of UEM. Currents are typical values.

Figure 3: RF power distribution diagram

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General specifications of transceiver RH-47

Parameter Unit

Cellular System GSM850, GSM1900

RX Frequency Band GSM850: 869 … 894 MHz

GSM1900: 1930 … 1990 MHz

TX Frequency Band GSM850: 824 … 849 MHz

GSM1900: 1850 … 1910 MHz

Output Power GSM850: +5 … +33 dBm (3.2 mW … 2 W)

GSM1900: +0 … +30 dBm (1.0 mW … 1 W)

Duplex Spacing GSM850: 45 MHz

GSM1900: 80 MHz

Number of RF Channels GSM850: 124

GSM1900: 299

Channel Spacing 200 kHz (each band)

Number of TX Power Levels GSM850: 15

GSM1900: 16

Sensitivity, static channel GSM850: -102 dBm

GSM1900: -102 dBm

Frequency Error, static channel < 0.1 ppm

RMS Phase Error < 5.0 °

Peak Phase Error < |20.0 °|

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Introduction to RF Troubleshooting

This document shall provide instructions, how to check, repair and calibrate RH-47 phones. It is assumed, that the phones are disassembled and tested within a repair jig MJ-21.

The following types of measurements have to be done for repair of the phone boards:

• RF measurements are made by using a Spectrum Analyzer together with a highfrequency probe (i.e. hp 85024A Note, that signal levels are not accurate ). Correct attenuation can be checked using a “good” phone board for example.

• LF (Low frequency) and DC measurements are made with an oscilloscope together with a 10:1 probe.

• For receiver measurements a signal generator with frequencies up to 2000 MHz is required. Most of the radio communication testers like CMD55 or CMU200 can be used as signal generator. The signal generator is connected to the antenna port using the repair jig MJ-21.

• Output level measurements of the transmitter are made with a power meter or a calibrated spectrum analyser, which is connected to the antenna port using the repair jig MJ-21.

Always make sure that the measurement set-up is calibrated when measuring RF parameters at the antenna port. Remember to include the correct losses of the module repair jig and the connecting cable when realigning the phone.

Most RF semiconductors are static discharge sensitive. ESD protection must be taken into account during repair (ground straps and ESD soldering irons).

Mjoelner RF ASIC is moisture sensitive. Therefore, Mjoelner RF ASIC must be pre-baked prior to soldering.

Rx calibration done via Phoenix software is temperature sensitive because of calibration of the 26 MHz reference oscillator (VCXO). According to Mjoelner specification ambient temperature has to be in a range from 22°C to 36°C.

Apart from key-components described in this document there are a lot of discrete components (resistors, inductors and capacitors) for which trouble shooting is done by checking its proper soldering and complete assembly on the PWB. Capacitors and resistors can be checked by means of an LCR meter, but be aware in-circuit measurements should be evaluated carefully.

In the following GSM850 will be used for the low band, and PCS or GSM1900 for the high band.

Note: In this document there are example measurements being depicted with Phoenix Internal Service Software A2003.42.1.48 pictures.

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Printed Wired Board

RF key component placement

Figure 4: RF key component placement

Description / Part Code Manufacturer’s code NMP Code Supplier

Dual band PA (N801) PF08130B-TB 4350403 Renesas

Mjölner RF ASIC F7 (N601) 4380013 Infineon

BT202i (N430) 0700085 Murata

UHF VCO (G701) ENFVJSW2S08 4350431 Matsushita

UHF VCO Balun (T702) LDB213G6010C-001 4550187 Murata

1900 Tx Balun (T701) LDB211G8005C-001 4550191 Murata

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1900 Rx SAW (Z603) 4511325 Murata

850 Tx SAW (Z701) 4511317 Murata

850 Rx SAW (Z604) 4511323 Murata

Antenna switch (Z601) LMZ0170 4510449 Murata

Crystal (B601) TSX-8A-25850 4510337 Toyocom

Tx Coupler (L801) LDC21836M19D-185 4550197 Murata

Tx850 buffer (V802) BFR949T-E6327 4210171 Infineon

RF test points

The RF power supplies are generated in the UEM and can be measured either in the Mjoelner chamber or in the base band chamber. On the drawing below small circles show the locations of the test points.

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Test points RF supply voltages

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RF test points Mjoelner chamber

RF test points VCO chamber

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RF test points PA chamber

Test points BB area

J203 TXQD

J201 RXQD

J202 TXID

J200 RXID

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Receiver Troubleshooting

General instructions for RX troubleshooting

Connect the phone to a PC with Phoenix dongle PKD-1CS and DAU-9S cable (RS232). Follow the instructions below.

Connect the phone to a power supply (DC voltage of 3.6V) and an RF signal generator.

Measuring RX I/Q signals using RSSI reading

1 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.

2 Set operating mode to local mode:

Select Maintenance Alt-M

Testing T

RF Controls F

Wait until the RF Controls window pops up.

3 In the RF Controls window:

Select Band GSM850 or GSM1900

Active unit RX Operation mode Burst RX/TX Channel 190 or 661

Select Maintenance Alt-M

Testing T RSSI reading R

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The setup should now look like this:

4 Make the following settings on your signal generator:

Frequencies:

GSM850: 881.66771 MHz (channel 190 + 67.710kHz offset)

GSM1900: 1960.06771 MHz(channel 661 + 67.710kHz offset)

RF power level:

– 80dBm @ the antenna connector of the phone (remembering to compensate for the cable and jig attenuation).

5 In RSSI reading, click Read now.

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

Measuring RX performance using SNR measurement

1 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.

2 Set operating mode to local mode.

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Select Maintenance Alt-M

Testing T

RF Controls F

Wait until the RF Controls window pops up.

3 In the RF Controls window:

Select Band GSM850 or GSM1900

Active unit RX Operation mode Burst RX/TX Channel 190 or 661

Select Maintenance Alt-M

Testing T

SNR Measurement M

Select Both (Radio Button)

The setup should now look like this:

4 Press the Start button.

5 To continue, follow the instructions in the following pop-up windows.

6 Connect an external signal generator to the RF connector of the phone and set

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the generator as instructed in the window. Take care for external cable and test jig attenuation losses.

7 Switch off the external RF signal as instructed in the next pop-up window.

8 Press OK and read the SNR result.

The values should be:

GSM850 > 20dB GSM1900 > 18dB

Measuring front-end power levels using spectrum analyzer

Spectrum Analyzer (SA) level values depend on the probe type and should be validated using a good sample. The levels that are given here are measured using an hp 85024A probe.

1 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.

2 Set operating mode to local mode:

Select Maintenance Alt-M

Testing T

RF Controls F

Wait until the RF Controls window pops up

3 In the RF Controls window:

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Select Band GSM850 or GSM1900

Active unit RX Operation mode Continuous RX/TX Channel 190 or 661

Please refer to the fault-finding chart and Appendix C for proper levels at different test points.

Measuring analogue RX I/Q signals using oscilloscope

Measuring with an oscilloscope on “RXIINN” or “RXQINN” is recommended only if RSSI reading does not provide enough information. There are dedicated test points for RX I and Q signals. Apply an Input signal level of -80dBm.

1 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.

2 Set operating mode to local mode:

Select Maintenance Alt-M

Testing T

RF Controls F

Wait until the RF Controls window is pops up.

3 In the RF Controls window:

Select Band GSM850 or GSM1900

Active unit RX Operation mode Continuous RX/TX Channel 190 or 661 AGC 14

Following picture should be displayed on an oscilloscope' s screen if the GSM850

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receiver is working properly:

Receiver troubleshooting

The phone layout has dedicated test points for the analogue differential RX I and Q signals (RXIINP, RXIINN, RXQINP, RXQINN) from Mjoelner RF ASIC to UEM. The BB part is used to measure those signals by means of RSSI reading. It is assumed that correct calibration of RSSI reading has been carried out in production.

RSSIreading [dBm] = 20log(U

Therefore, do not calibrate a defective phone before the phone error has been found.

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 you are not sure that incorrect re-calibration has been made, the following steps should be done:

1 Check if AGC calibration is within limits.

) + AGC

calibrated

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2 Check if SNR reading is OK.

Use an Oscilloscope to check levels of “RXIINN” and “RXQINN”.

Make sure that Synthesiser is working

Note: RF levels given in that chart are dependent on RF probe and m ust be v alidated with a known good sample

Apply -80dBm signal from Generator to Antenna Connector phone: local, burst mode

GSM, PCS

RSSI reading

-80dBm

all bands

RX calibration

Calibration.

Rx chain functional

= to be done in all 3 bands

within limits

GSM, PCS

Apply -92dBm signal

Yes

from Generator to Antenna Connector phone: local, burst mode

SNR measurement

all bands

o.k.

Yes

= to be done in defective band only

= to be done only once (common for all bands)

wrong in both

Change signal level to -60dBm phone: local, continous mode

Check RxTx Switch

RSSI

and SN R

bands

Z601

Rx output EGSMout

(850 &1900)

-76dBm

> -67dBm

Change

Z601

Yes

Check SAW

Osci:

RF-BB

Z601

serial

EGSMout Interface

-76dBm o.k.

BB Error

Check UPP

SA SA

Z604,Z603

Z601

SAWout EGSMout

both lines

-76dBm

>-72dBm

Change

Z604, Z603

Yes

EGSMout

Change

Mjolner

Check Bias

C620, C632

Osci:

RX I/Q

Z601

level

o.k.

-76dBm ?

Osci:

LNA bias

Z601

(VR4)

EGSMout

=2.8V

-76dBm ?

Check

and

BB (UEM)

Yes

BB Error

Check UEM

Check Bias

RX -BB bias

Yes

EGSMout

BB (UEM)

If RX and TX path seem to be faulty it has to be checked if the synthesizer is working. If yes, then check the path from the antenna test pad J800 to the antenna switch Z601 (see RX troubleshooting "Check RXTX switch").

Osci:

Z601 (VR4) =2.8V

-76dBm

Check

C871

and

Check

Yes

LNA

Yes

Osci:

LNA

Z601

base voltage

EGSMout

= 0.8V

-76dBm ?

Change

Mjoelner

Rx signal paths

The signal paths of the receiver are shown in following block diagram. Note that the diagram shows GSM850 receiver (above) and the GSM1900 receiver (below).

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Figure 5: Rx signal paths

supply

filter

F X R D D V

LNA Bias

SAW

GSM

Ant Switch

PCN

RX850

RX1800

SAW

RX1900

INPL

LNA

INML

INPM

LNA

INMM

INPH

LNA

INMH

VANTL / VANTM

VANTH

Controls

Pre-gain

VDDDIG

VDDRXBB

222

1/2

BBAMP

1/4

B B X R D D V

BIQUAD

LPF1

DCN1

AGC

LPF2

BIQUAD

LPF2

DCN2

VDDLO

Mjølner

VRX

RXIP RXIM

RXQP

RXQM

VR6

Antenna switch (RX/TX Switch)

Signal path of RF: From the antenna-pad (J800) the RF signal is fed through the antenna low pass filter (C743, L610, C748) to the antenna switch (Z601).

The antenna switch has the function of a diplexer which consists of two paths for GSM850 and GSM1900. The GSM850 input signals pass the switch to the GSM_RX output. GSM1900 input signals pass to PCS_RX output. In receive mode both control signals VC1 (VANTL) and VC2 (VANTH) have to be 0 V.

Signal paths:

GSM850: RX1-GSM output of the antenna switch Æ GSM850 SAW filter (Z604). GSM1900: RX2-PCS output of the antenna switch Æ GSM1900 SAW filter (Z603).

The antenna switch including routed lines has following typical insertion losses:

GSM850: 1.3dB GSM1900: 1.6dB

RX front-end

The RX front-end includes two SAW filters for GSM850 (Z604) and GSM1900 (Z603). They are matched to the corresponding LNA inputs of Mjoelner RF ASIC (N601) with differential matching circuits (LC-type). The SAW filters provide out-of-band blocking immunity. The integrated LNAs provide the front-end gains. Each of the SAW filters has a single-ended input and a balanced output.

The SAW filters have maximum insertion losses of:

GSM850: 3.5dB GSM1900: 4.0dB

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RX paths of Mjoelner RF ASIC

The balanced RX signal is amplified by the integrated LNA and the subsequent pre-gain stage. After amplification the RX signal is down-converted.

The RX paths of Mjoelner RF ASIC consist of following sub units:

Separate LNAs for each of the two bands: GSM850 and GSM1900. Two PRE-GAIN amplifiers, one for GSM850 and one for GSM1900. Two passive I/Q mixers (MIX), one for GSM850 and one for GSM1900.

The BB signal paths consist of:

• Baseband amplifiers (BBAMP1). These amplifiers implement the initial channel filtering.

• Low pass filters (LPF1).

• DC compensation / AGC amplifiers (DCN1). These amplifiers implement gain steps from 0dB to 24dB in 6dB steps.

• Attenuators (AGC). They implement gain steps from -48dB to 0dB in 6dB steps, yielding a total gain range of 72dB together with DCN1.

• Bi-quad filters (LPF2).

• DC compensation amplifiers (DCN2).

The differential base band outputs are internally DC-coupled and are connected directly to the ADC inputs of the UEM-ASIC. The common mode level is set equal to the VBEXT reference voltage.

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Transmitter

General instructions for TX troubleshooting

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). Assure not to overload or destroy the equipment.

Connect the phone to a PC with DAU-9S cable (RS232) and Phoenix dongle PKD-1CS.

Provide the phone with power supply (3.6V).

Start Phoenix Service Software and open FBUS connection:

Select Scan Product Ctrl-R

and wait until phone information is shown in the lower right corner of the screen.

Follow the instructions in the chapters below.

TX signal paths

For easy error tracking it is important to know the signal paths of the transmitter. The components are grouped in blocks and shown in the diagrams below.

Note that the diagram shows both GSM850 transmitter (below) and PCS1900 transmitter (above).

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Figure 6: Transmitter signal paths

VANTL / VANTH

VB_DET

VTXLOL

VTXLOL VTXLOH

VTXLOH

VTXBH

VTXBH VTXBL

VTXBL

PCN/PCS

PCS

DET

VBATTRF

Buffer

GSM850

PCS

t S

GSM

wit

Dir. Coupler

Balun

VTX

SAW

PW-

PWloop

loop

loop filter

filter

OUTHP

OUTHP OUTHM

OUTHM

OUTLP

OUTLP OUTLM

OUTLM

OUTLM DET

DET

DET PLFB1

PLFB1

PLFB1 PLFB2

PLFB2

VPCH/VPCL

Controls

Open

Open collector

collector

Open

Open collector

collector

TXP

PWC

TXCTX

TXC

VDDDIG

VDDRXBB

V D

D DT

Supply

filter

VT X

VR2

1/4

1/2

TX Q

Q P/

P/ TX

TX Q

Mjølner

TX IP/

IP/

IP/ TX

TX IM

The balanced TX IQ baseband signals (TXIOUTP, TXIOUTN, TXQOUTP, TXQOUTN) are provided by the baseband and are fed to the Mjoelner RF ASIC. The TX path of the Mjoelner RF ASIC includes mainly two RF modulators for up-conversion of the baseband signals, one for GSM850 and one for GSM1900. The baseband signal is up-converted with the LO signal corresponding to the wanted TX channel. Both RF-TX outputs (850MHz and 1900MHz) of the Mjoelner RF ASIC are delivering balanced signals.

The GSM850 output signal of the Mjoelner RF ASIC is fed through the GSM TX SAW filter (balanced to single ended) and the GSM850 MHz buffer to the GSM input of the power amplifier (PA).

The GSM1900 output signal of the Mjoelner RF ASIC is fed through the TX balun (T701) (balanced to single ended) and a 2dB pad to the GSM1900 input of the power amplifier (PA).

The Dual Band PA has a maximum output power of approx. 35dBm at 850MHz and 33dBm at 1900MHz. DC-power supply is delivered directly from the battery through an RF choke L850.

The RF output power is controlled by the power control loop. From the output of the PA both signals are fed through a dual directional coupler (one of the power control loop components) to the antenna switch.

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Antenna switch (TX/RX switch)

The antenna switch operates as a diplexer for the RX and TX signals. Moreover, it suppresses the TX harmonics generated by the PA. The antenna switch is controlled by the Mjoelner RF ASIC using the control signals VC1 and VC2.

The following table shows the possible different states.

Table 1: Logic table for the antenna switching states

VC1 [Volt] VC2 [Volt] GSM RX PCS RX GSM TX PCS TX

0 0 X X

0 2.7 X

2.7 0 X

GSM850 transmitter

General instructions for GSM850 TX troubleshooting

Start the preparations as described in chapter General instructions for TX troubleshooting “General instructions for TX troubleshooting”.

1 Set operating mode to local mode.

Select Maintenance Testing RF Controls

Wait until the RF Controls window pops up.

2 In the RF Controls window:

Select Band GSM850

Active unit TX Operation mode Burst RX/TX Channel 190 TX Power Level 10 TX Data Type Random

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The setup should now look like this:

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

= +23 ± 1dBm @ 836.6 MHz

out

If this is not the case, then go to the next chapter for troubleshooting.

Troubleshooting for GSM850 transmitter

In the following troubleshooting chart, the TXP signal is used as a trigger-signal. For this purpose a TXP test point is provided on the PWB, refer to figure RF test points in the

Mjoelner chamber.

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Use Phoenix to select

TX_Data Type: "1" or "0"

TX Power Level: 10

Yes

Oscilloscope

R612 C627

C717 C623

J614

Yes

Oscilloscope

R715

R716

Yes

Oscilloscope

R823

C641 (NF)

C640 (NF)

C803

Yes

Spectrum Analyzer No Check

R828 PA input PA Input

Compare with good

Yes Synthesizer

Use Phoenix to select

TX_Data Type: Random

TX Power Level: 10

Yes

Spectrum analyzer Check PA N801

L801 (B1_in) (PA N801

Pout_GSM)

Power >= +24 dBm, 836.6

MHz

Yes

Spectrum analyzer Check

RF-connector J800 No Directional Coupler

Pout

= +23 dBm, 836.6 MHz

Yes GSM TX

VREF1

VR2

TXP

VR5 VR3

TXIOUTP

Vdc = 1.35 Volt Check Vdc = 2.78 Volt No Base Band

V = 1.8 Volt

Vdc = 2.78 Volt Vdc = 2.78 Volt

67kHz

No Check

Vac = 0.4 Vpp, Vdc =

1.1 V

TXIOUTN

67kHz

Base Band

Vac = 0.4 Vpp, Vdc =

1.1 V

TXQOUTP

67kHz

Vac = 0.4 Vpp, Vdc =

1.1 V

TXQOUTN

67kHz

Vac = 0.4 Vpp, Vdc =

1.1 V

VTXB_850

VC1

Vdc = 2.78 Volt No Check:

Vdc = 0 Volt Mjoelner Serial

Interface

VC2

VBD

GSM850

Vdc = 2.78 Volt Mjoelner Vdc = 2.78 Volt

P>= 5 dBm, 836.6 MHz

(with hp 85024A)

GSM TX SAW Filter

V802 Buffer

Mjoelner

sample

No Check Power Loop

L801,V801

Check TXC

(L801)

Antenna Switch (Z601)

LPF (C742,743,L610)

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GSM1900 (PCS) transmitter

General instructions for GSM1900 TX troubleshooting

Start the investigations as described in chapter General instructions for TX troubleshooting “General instructions for TX troubleshooting”.

1 Set operating mode to local mode:

Select Maintenance Testing RF Controls

Wait until the RF Controls window pops up.

2 In the RF Controls window:

Select Band GSM 1900

Active unit TX Operation mode Burst RX/TX Channel 661 TX Power Level 5 TX Data Type Random

The setup should now look like this:

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

= +20 ± 1dBm @ 1880MHz

out

If this is not the case, then go to the next chapter for troubleshooting.

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Troubleshooting for GSM1900 transmitter

In the following troubleshooting chart, the TXP signal is used as a trigger-signal. For this purpose a TXP test point is provided on the PWB, refer to RF test points in the Mjoelner chamber.

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Use Phoenix to select

TX_Data Type: "1" or "0"

TX Power Level: 5

Yes

Oscilloscope

R612 C627

C717 C623

J614

Yes

Oscilloscope

R715

R716

Yes

Oscilloscope

C641 (NF)

C649 (NF)

C803

Yes

Spectrum analyzer No Check

R819 in TX_1900 P>= 0 dBm, 1880 MHz DCS/PCS Balun

Mjoelner

Yes Synthesizer

Use Phoenix to select

TX_Data Type: Random

TX Power Level: 5

Yes

Spectrum analyzer Check PA N801

L809 (NF), B2_in (PA

N801 Pout_DCS)

Power = +22 dBm, 1880

MHz

Yes

Spectrum analyzer Check

RF-connector J800 No Directional Coupler

Pout =+20 dBm, 1880

MHz

Yes

PCS TX

VREF01

VR2

TXP

VR5 VR3

TXIOUTP

Vdc = 1.35 Volt Check Vdc = 2.78 Volt No Base Band

V = 1.8 Volt

Vdc = 2.78 Volt Vdc = 2.78 Volt

67kHz

No Check

Vac = 0.4 Vpp, Vdc =

1.1 V

TXIOUTN

67kHz

Vac = 0.4 Vpp, Vdc =

Base Band

1.1 V

TXQOUTP

67kHz

Vac = 0.4 Vpp, Vdc =

1.1 V

TXQOUTN

67kHz

Vac = 0.4 Vpp, Vdc =

1.1 V

VC1

VC2

VDET

Vdc = 2.78 Volt Mjoelner Serial

Vdc = 2.78 Volt Mjoelner

Vdc = 2.78 Volt

No Check:

Interface

T701

No Check Power Loop

L801,V801

Check TXC

(L801)

Antenna Switch (Z601)

LPF (C742,743,L610)

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Figure 7: Example for TXP and TXC signal waveform (PCS1900 @ PL19)

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Nokia Customer Care 7 - RF Description and Troubleshooting

Synthesizer

One PLL synthesizer is generating all the required frequencies of both bands for Rx and Tx. The VCO frequency is divided by 2 or by 4 in Mjoelner depending on the active band.

General instructions for synthesizer troubleshooting

Connect the phone to a PC with DAU-9S cable (RS232). The PC must have Phoenix Service Software installed and a PKD-1CS dongle is required.

Follow the instructions in the chapters below.

Checking synthesizer operation

1 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.

2 Set operating mode to local mode.

3 Start RF Control window:

Select Maintenance Alt-M

Tuning T

RF Controls F

Wait until the RF Controls window pops up.

4 Set the synthesizer to the following mode:

Select Band PCS1900

Active unit RX Operation mode Continuous RX/TX Channel 661

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The setup should now look like this:

The frequency of 3920MHz at the output of the VCO (G701) has to be measured with an RF probe and a spectrum analyzer.

The tuning voltage can be easily measured at the VC input of the VCO (C712) The tuning voltage should be 3.2 .. 3.4V at f

VCO

typically 240MHz/V.

If this is not the case, then go to chapter Troubleshooting for PLL synthesizer.

26 MHz reference oscillator (VCXO)

The VCXO is integrated in the Mjoelner RF-ASIC (N601). The only external component is the 26MHz crystal (B601).

The reference oscillator has two functions:

• Reference frequency for the PLL synthesizer.

• System clock for BB (RFClk = 26 MHz).

For an error free initial synchronization, the 26MHz frequency of the VCXO must be accurate enough. Therefore, a VCXO-calibration value is written via the serial Bus into the RefOSCCAL register of Mjoelner and an additional bit in the RefOSCCntl register of the Mjoelner. That is necessary for the rough calibration of the VCXO.

= 3920.0MHz. The tuning sensitivity of the VCO is

The VCXO is fine tuned by programming the AFC value via the serial bus of Mjoelner. The

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necessary AFC value is written into the RefOSCAFC register in Mjoelner.

VCO

The VCO is able to generate frequencies in the range of 3296.8 MHz to 3979.6 MHz when the PLL is working properly. The frequency of the VCO signal is divided by 2 or by 4 in Mjoelner RF-ASIC. This allows the generation of all the frequencies in the GSM850 and the GSM1900 bands, both RX and TX.

The output frequency of the VCO is controlled by a DC voltage (VC) of the PLL loop filter. The valid range of VC is 0.7V– 3.8V when the PLL is in steady state. The typical tuning sensitivity is 240MHz/V. 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 GHz (if the VCO itself is OK).

Troubleshooting for PLL synthesizer

It is important to note that the power supply of the VCXO (VR3) is only switched off in the so-called ‘Deep Sleep Mode’ and the power supply of the VCO G701 (VR7) is switched off in so-called ‘Sleep Mode’.

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Figure 8: PLL block diagram

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Nokia Customer Care 7 - RF Description and Troubleshooting

Frequency lists

GSM850

Channel TX RX TX VCO RX VCO Channel TX RX TX VCO RX VCO

128 824,2 869,2 3296,8 3476,8 190 836,6 881,6 3346,4 3526,4 129 824,4 869,4 3297,6 3477,6 191 836,8 881,8 3347,2 3527,2 130 824,6 869,6 3298,4 3478,4 192 837 882 3348 3528 131 824,8 869,8 3299,2 3479,2 193 837,2 882,2 3348,8 3528,8 132 825 870 3300 3480 194 837,4 882,4 3349,6 3529,6 133 825,2 870,2 3300,8 3480,8 195 837,6 882,6 3350,4 3530,4 134 825,4 870,4 3301,6 3481,6 196 837,8 882,8 3351,2 3531,2 135 825,6 870,6 3302,4 3482,4 197 838 883 3352 3532 136 825,8 870,8 3303,2 3483,2 198 838,2 883,2 3352,8 3532,8 137 826 871 3304 3484 199 838,4 883,4 3353,6 3533,6 138 826,2 871,2 3304,8 3484,8 200 838,6 883,6 3354,4 3534,4 139 826,4 871,4 3305,6 3485,6 201 838,8 883,8 3355,2 3535,2 140 826,6 871,6 3306,4 3486,4 202 839 884 3356 3536 141 826,8 871,8 3307,2 3487,2 203 839,2 884,2 3356,8 3536,8 142 827 872 3308 3488 204 839,4 884,4 3357,6 3537,6 143 827,2 872,2 3308,8 3488,8 205 839,6 884,6 3358,4 3538,4 144 827,4 872,4 3309,6 3489,6 206 839,8 884,8 3359,2 3539,2 145 827,6 872,6 3310,4 3490,4 207 840 885 3360 3540 146 827,8 872,8 3311,2 3491,2 208 840,2 885,2 3360,8 3540,8 147 828 873 3312 3492 209 840,4 885,4 3361,6 3541,6 148 828,2 873,2 3312,8 3492,8 210 840,6 885,6 3362,4 3542,4 149 828,4 873,4 3313,6 3493,6 211 840,8 885,8 3363,2 3543,2 150 828,6 873,6 3314,4 3494,4 212 841 886 3364 3544 151 828,8 873,8 3315,2 3495,2 213 841,2 886,2 3364,8 3544,8 152 829 874 3316 3496 214 841,4 886,4 3365,6 3545,6 153 829,2 874,2 3316,8 3496,8 215 841,6 886,6 3366,4 3546,4 154 829,4 874,4 3317,6 3497,6 216 841,8 886,8 3367,2 3547,2 155 829,6 874,6 3318,4 3498,4 217 842 887 3368 3548 156 829,8 874,8 3319,2 3499,2 218 842,2 887,2 3368,8 3548,8 157 830 875 3320 3500 219 842,4 887,4 3369,6 3549,6 158 830,2 875,2 3320,8 3500,8 220 842,6 887,6 3370,4 3550,4 159 830,4 875,4 3321,6 3501,6 221 842,8 887,8 3371,2 3551,2 160 830,6 875,6 3322,4 3502,4 222 843 888 3372 3552 161 830,8 875,8 3323,2 3503,2 223 843,2 888,2 3372,8 3552,8 162 831 876 3324 3504 224 843,4 888,4 3373,6 3553,6 163 831,2 876,2 3324,8 3504,8 225 843,6 888,6 3374,4 3554,4 164 831,4 876,4 3325,6 3505,6 226 843,8 888,8 3375,2 3555,2 165 831,6 876,6 3326,4 3506,4 227 844 889 3376 3556 166 831,8 876,8 3327,2 3507,2 228 844,2 889,2 3376,8 3556,8 167 832 877 3328 3508 229 844,4 889,4 3377,6 3557,6 168 832,2 877,2 3328,8 3508,8 230 844,6 889,6 3378,4 3558,4 169 832,4 877,4 3329,6 3509,6 231 844,8 889,8 3379,2 3559,2 170 832,6 877,6 3330,4 3510,4 232 845 890 3380 3560 171 832,8 877,8 3331,2 3511,2 233 845,2 890,2 3380,8 3560,8 172 833 878 3332 3512 234 845,4 890,4 3381,6 3561,6 173 833,2 878,2 3332,8 3512,8 235 845,6 890,6 3382,4 3562,4 174 833,4 878,4 3333,6 3513,6 236 845,8 890,8 3383,2 3563,2 175 833,6 878,6 3334,4 3514,4 237 846 891 3384 3564 176 833,8 878,8 3335,2 3515,2 238 846,2 891,2 3384,8 3564,8 177 834 879 3336 3516 239 846,4 891,4 3385,6 3565,6 178 834,2 879,2 3336,8 3516,8 240 846,6 891,6 3386,4 3566,4 179 834,4 879,4 3337,6 3517,6 241 846,8 891,8 3387,2 3567,2 180 834,6 879,6 3338,4 3518,4 242 847 892 3388 3568 181 834,8 879,8 3339,2 3519,2 243 847,2 892,2 3388,8 3568,8 182 835 880 3340 3520 244 847,4 892,4 3389,6 3569,6 183 835,2 880,2 3340,8 3520,8 245 847,6 892,6 3390,4 3570,4 184 835,4 880,4 3341,6 3521,6 246 847,8 892,8 3391,2 3571,2 185 835,6 880,6 3342,4 3522,4 247 848 893 3392 3572 186 835,8 880,8 3343,2 3523,2 248 848,2 893,2 3392,8 3572,8 187 836 881 3344 3524 249 848,4 893,4 3393,6 3573,6 188 836,2 881,2 3344,8 3524,8 250 848,6 893,6 3394,4 3574,4

189 836,4 881,4 3345,6 3525,6

251 848,8 893,8 3395,2 3575,2

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GSM1900

7 - RF Description and Troubleshooting Nokia Customer Care

GSM1900

CH TX RX VCO TX VCO R X CH TX RX VCO TX VCO RX CH TX RX VCO TX V CO RX CH TX RX VCO TX VCO RX

512

1850,2 1930,2 3700,4 3860,4

513

1850,4 1930,4 3700,8 3860,8

514

1850,6 1930,6 3701,2 3861,2

515

1850,8 1930,8 3701,6 3861,6

516

1851,0 1931,0 3702,0 3862,0

517

1851,2 1931,2 3702,4 3862,4

518

1851,4 1931,4 3702,8 3862,8

519

1851,6 1931,6 3703,2 3863,2

520

1851,8 1931,8 3703,6 3863,6

521

1852,0 1932,0 3704,0 3864,0

522

1852,2 1932,2 3704,4 3864,4

523

1852,4 1932,4 3704,8 3864,8

524

1852,6 1932,6 3705,2 3865,2

525

1852,8 1932,8 3705,6 3865,6

526

1853,0 1933,0 3706,0 3866,0

527

1853,2 1933,2 3706,4 3866,4

528

1853,4 1933,4 3706,8 3866,8

529

1853,6 1933,6 3707,2 3867,2

530

1853,8 1933,8 3707,6 3867,6

531

1854,0 1934,0 3708,0 3868,0

532

1854,2 1934,2 3708,4 3868,4

533

1854,4 1934,4 3708,8 3868,8

534

1854,6 1934,6 3709,2 3869,2

535

1854,8 1934,8 3709,6 3869,6

536

1855,0 1935,0 3710,0 3870,0

537

1855,2 1935,2 3710,4 3870,4

538

1855,4 1935,4 3710,8 3870,8

539

1855,6 1935,6 3711,2 3871,2

540

1855,8 1935,8 3711,6 3871,6

541

1856,0 1936,0 3712,0 3872,0

542

1856,2 1936,2 3712,4 3872,4

543

1856,4 1936,4 3712,8 3872,8

544

1856,6 1936,6 3713,2 3873,2

545

1856,8 1936,8 3713,6 3873,6

546

1857,0 1937,0 3714,0 3874,0

547

1857,2 1937,2 3714,4 3874,4

548

1857,4 1937,4 3714,8 3874,8

549

1857,6 1937,6 3715,2 3875,2

550

1857,8 1937,8 3715,6 3875,6

551

1858,0 1938,0 3716,0 3876,0

552

1858,2 1938,2 3716,4 3876,4

553

1858,4 1938,4 3716,8 3876,8

554

1858,6 1938,6 3717,2 3877,2

555

1858,8 1938,8 3717,6 3877,6

556

1859,0 1939,0 3718,0 3878,0

557

1859,2 1939,2 3718,4 3878,4

558

1859,4 1939,4 3718,8 3878,8

559

1859,6 1939,6 3719,2 3879,2

560

1859,8 1939,8 3719,6 3879,6

561

1860,0 1940,0 3720,0 3880,0

562

1860,2 1940,2 3720,4 3880,4

563

1860,4 1940,4 3720,8 3880,8

564

1860,6 1940,6 3721,2 3881,2

565

1860,8 1940,8 3721,6 3881,6

566

1861,0 1941,0 3722,0 3882,0

567

1861,2 1941,2 3722,4 3882,4

568

1861,4 1941,4 3722,8 3882,8

569

1861,6 1941,6 3723,2 3883,2

570

1861,8 1941,8 3723,6 3883,6

606

1869,0 1949,0 3738,0 3898,0

607

1869,2 1949,2 3738,4 3898,4

608

1869,4 1949,4 3738,8 3898,8

609

1869,6 1949,6 3739,2 3899,2

610

1869,8 1949,8 3739,6 3899,6

611

1870,0 1950,0 3740,0 3900,0

612

1870,2 1950,2 3740,4 3900,4

613

1870,4 1950,4 3740,8 3900,8

614

1870,6 1950,6 3741,2 3901,2

615

1870,8 1950,8 3741,6 3901,6

616

1871,0 1951,0 3742,0 3902,0

617

1871,2 1951,2 3742,4 3902,4

618

1871,4 1951,4 3742,8 3902,8

619

1871,6 1951,6 3743,2 3903,2

620

1871,8 1951,8 3743,6 3903,6

621

1872,0 1952,0 3744,0 3904,0

622

1872,2 1952,2 3744,4 3904,4

623

1872,4 1952,4 3744,8 3904,8

624

1872,6 1952,6 3745,2 3905,2

625

1872,8 1952,8 3745,6 3905,6

626

1873,0 1953,0 3746,0 3906,0

627

1873,2 1953,2 3746,4 3906,4

628

1873,4 1953,4 3746,8 3906,8

629

1873,6 1953,6 3747,2 3907,2

630

1873,8 1953,8 3747,6 3907,6

631

1874,0 1954,0 3748,0 3908,0

632

1874,2 1954,2 3748,4 3908,4

633

1874,4 1954,4 3748,8 3908,8

634

1874,6 1954,6 3749,2 3909,2

635

1874,8 1954,8 3749,6 3909,6

636

1875,0 1955,0 3750,0 3910,0

637

1875,2 1955,2 3750,4 3910,4

638

1875,4 1955,4 3750,8 3910,8

639

1875,6 1955,6 3751,2 3911,2

640

1875,8 1955,8 3751,6 3911,6

641

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

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

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Company Confidential RH-47

Nokia Customer Care 7 - RF Description and Troubleshooting

570

1861,8 1941,8 3723,6 3883,6

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

664

1880,6 1960,6 3761,2 3921,2

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

758

1899,4 1979,4 3798,8 3958,8

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

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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care

DC Supply Current Check

For a quick check of DC power supplies refer to the diagram below. Voltage drops are measured at the respective resistors pads. Note, that not all currents can be checked in such a way, see the marking <na> (not applicable) in the diagram.

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Phoenix Tunings after Repairs

The following tunings have to be performed after repairs:

• Repairs in the TX part require "TX Power Level Tuning".

• When component replacements around the modulator area (RF path from UEM via RF ASIC to RF PA) have been done, "TX IQ Tuning" is additionally required.

• In RX general repairs, front-end always require "RX Calibration" and “Rx Band Filter Calibration” for all three bands.

• Repairs in the PLL circuit always require "RX Calibration" of the low band.

• If the RF ASIC is replaced, all calibrations mentioned above have to be done.

Refer to Chapter 3, Service Software Instructions, for instructions on the above-mentioned tunings.

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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care

APPENDIX A: FLALI Test Cases with Hints for Repair

testplan aquarius_335 (Flali)

Step Nr.

1 MainSequence Copyright * 2002 Nokia

2 Set Flash_Enable flag State-

3 Flash_Detect Action

4 Check_Flash_Enable_Flag Action

5 Flash_Program Action

6 Start_Phone_After_Flash Action

7 Check_Start_Phone_Result 0 4 Num

8 Measure_Local_Mode_Curr

9 Read_BSI_ADC_Value 0 50 ADC

10 Write_Production_Info Action

11 Read_PCI_Version 0 5 ADC

Sequence Name Step Name

Mobile Phones

ent

Low Limits

Label

ment

40 100 mA

High Limits

Unit

RF Tests

Repair Comment

12 Write_Product_Profile Action

13 Seq_Calibrate_ADCCalibrate_ADC Action

14 Check_VBATGScalV 10000 11000 ADC

15 Check_VBATOffScal 2400 2600 ADC

16 Check_BSICalGain 860 11 8 0 ADC

17 Check_BTEMPValue 200 450 ADC

18 Check_VCXOTEMPValue 200 450 ADC

19 Check_ADCCalGain 26000 29500 ADC

20 Check_ADCCalVOff -50 50 ADC

21 MainSequence Check_MCU_SW_Version 0 50 Ver

22 Select_PCI_Layer Action

23 Check_RFIC String

ValueTest

24 Set_Zocus_Cal_Current Action

73 Tune_Channel_Select_Filter 1 63 ADC x Check RXIQ Signals

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74 Check_Channel_Select_Filte

r_VIPP

75 Check_Channel_Select_Filte

r_VQPP

25 Seq_Tuning_GSM

850_Rx

29 Check_GSM850_RSSI_3 75 85 ADC x Check GSM850 RX

32 Check_GSM850_RSSI_6 97 107 ADC x If no signal, check RX

35 Check_VCXO_Value 128 767 ADC x

36 Check_AFC_Value 3062 3262 ADC x VCXO/AFC calibration

Tuning_GSM850_Rx Action x

8000 20000 ADC x most likely cause is

defect N601 Mjölner

1700 4000 ADC x also check all supply

voltages to N601 Mjölner and check RFDATABus functionality

path (Z601, Z604 etc.) Heat solder joints. If RSSI 6-10 dB too low, change Z604.

path up to RXIQ interface. If RXIQ not ok, check N601, If RXIQ ok, check BB

can only be done when GSM850 RX Tuning was successful

37 Check_AFC_Coeff_0 1500 3500 ADC x If calibration fails at

all, check RFBUS Signals to N601

38 Check_AFC_Coeff_1 -700 -300 ADC x Check voltage supplies

VDDXO @ C607 (2.7V), VDDBBB @ C628 (1.8V), VBEXT @ C615 (1.35V)

39 Check_AFC_Coeff_2 0 1 ADC x If voltages are ok, the

crystal B601 or N601 (Mjölner) can be defective

40 Check AFC alignment crite-

ria

41 Seq_Tuning_GSM

1900Rx

45 Check_GSM1900_RSSI_3 73 83 ADC x If no signal, check RX

Tuning_GSM1900_Rx Action x Check GSM1900 RX

1 1 x

path (Z601, Z603). Heat solder joints. If RSSI is 6-10dB too low, change Z603

path up to RXIQ interface. If RXIQ not ok, check N601, If RXIQ ok, check BB

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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care

48 Check_GSM1900_RSSI_6 94 104 ADC x

51 MainSequence Zocus_Calibration 0 255 ADC

52 Check_Zocus_Cal_Current -503 -497 mA

53 Seq_Calibrate_G

SM850_Rx_Filter

54 Check_GSM850_Rx_Filter_F

55 Check_GSM850_Rx_Filter_N1-3 1 dB x

56 Check_GSM850_Rx_Filter_N2-3 1 dB x

57 Check_GSM850_Rx_Filter_N3-3 1 dB x

58 Check_GSM850_Rx_Filter_N4-2 1 dB x

59 Check_GSM850_Rx_Filter_N5-3 1 dB x

60 Check_GSM850_Rx_Filter_N6-3 1 dB x

61 Check_GSM850_Rx_Filter_N7-3 1 dB x

Calibrate_GSM850_Rx_FilterAction x If one of the steps 54-

-6 2 dB x Also consider the RF

irst

62 fails, change RX850 SAW Z604

calibration of the FLALI

62 Check_GSM850_Rx_Filter_N8-6 2 dB x

63 Seq_Calibrate_G

SM1900_Rx_Filte r

64 Check_GSM1900_Rx_Filter

65 Check_GSM1900_Rx_Filter

66 Check_GSM1900_Rx_Filter

67 Check_GSM1900_Rx_Filter

68 Check_GSM1900_Rx_Filter

69 Check_GSM1900_Rx_Filter

Calibrate_GSM1900_Rx_FilterAction x If one of the steps 64-

-6 2 dB x Also consider the RF

_First

-3 1 dB x

_N1

-3 1 dB x

_N2

-2 2 dB x

_N3

-2 1 dB x

_N4

-2 2 dB x

_N5

72 fails, change RX1900 SAW Z603

calibration of the FLALI

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70 Check_GSM1900_Rx_Filter

_N6

71 Check_GSM1900_Rx_Filter

_N7

72 Check_GSM1900_Rx_Filter

_N8

76 Seq_Tune_GSM8

50_Tx_Power

77 Tune_GSM850_Base_Level -35 -25 dBm x output to the antenna.

78 Check_GSM850_Base_Level

79 Set_SA_GSM850_Tx_Power

80 Measure_GSM850_Tuning_

Set_SA_GSM850_Base_leve l_Tuning

_Coef

_Tuning

Samples

-3 1 dB x

-6 2 dB x

Action x If one of the steps 77-

98 fails check the TX850 path from modulator

This includes the following groups:

0,1 0,2 ADC x 850 Modulator out-

put and TX850 SAW

Action x Buffer circuit

Action x PA circuit

81 Tune_GSM850_Tx_Power Action x Power control loop

and Antenna switch

82 Check_GSM850_Tx_Coeff5 0,5 0,7 ADC x

83 Seq_Measure_GS

M850_Tx_Levels

84 Check_GSM850_MID_Ch_T

98 Check_GSM850_MID_Ch_T

99 Seq_Tune_GSM1

900_Tx_Power

100 Tune_GSM1900_Base_Level -35 -25 dBm x output to the antenna.

101 Check_GSM1900_Base_Lev

102 Set_SA_GSM1900_Tx_Powe

Measure_GSM850_MID_Ch _Levels

x_Lev5

x_Lev19

Set_SA_GSM1900_Base_lev el_Tuning

el_Coef

r_Tuning

Action x

31,5 33 dBm x

2 8 dBm x

Action x If one of the steps 100

- 122 fails check the TX1900 path from modulator

This includes the following groups:

0,1 0,2 ADC x 1900 Modulator and

1900 TX Balun

Action x PA circuit

103 Measure_GSM1900_Tuning

_Samples

104 Tune_GSM1900_Tx_Power Action x

Action x Power control loop

and Antenna switch

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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care

105 Check_GSM1900_Tx_Coeff00,75 1,0 ADC x

106 Seq_Measure_GS

M1900_Tx_Level s

107 Check_GSM1900_MID_Ch_

122 Check_GSM1900_MID_Ch_

123 Seq_Tune_GSM8

50_Tx_IQ

124 Tune_GSM850_I_DC_Offset -6 6 mV x

125 Tune_GSM850_Q_DC_Offset-6 6 mV x Check TXIQ Signals

126 Tune_GSM850_I_DC_Offset_2-6 6 mV x

127 Tune_GSM850_Q_DC_Offse

Measure_GSM1900_MID_C h_Levels

Tx_Lev0

Tx_Lev15

Set_SA_GSM850_TX_IQ_Tu ning

t_2

Action x

28,5 30,50 dBm x

-3 3 dBm x

Action x Check TX850 path

around the modulator (L706,L707,L708, R725, R726, R732,R733, Z701)

with oscilloscope (TXIOUTP, TXIOUTN, TXQOUTP, TXQOUTN)

-6 6 mV x Check TX850 SAW filter Z604 and Buffer Transistor V802

128 Tune_GSM850_IQ_Phase_Di

fference

129 Tune_GSM850_IQ_Amplitu

de_Difference

130 Tune_GSM850_IQ_Phase_Di

fference_2

131 Measure_GSM850_TX_IQ Action x

132 Check_GSM850_TX_IQ_f0 -120 -35 dBc x

133 Check_GSM850_TX_IQ_f0_

+67710

134 Seq_Tune_GSM1

900_Tx_ IQ

135 Tune_GSM1900_I_DC_Offset-6 6 mV x

Set_SA_1900_TX_IQ_TuningAction x Check TX1900 path

70 11 0 deg x

-1,2 1,2 mV x Maybe Mjölner N601

70 11 0 deg x

-120 -40 dBc x

must be replaced

aroung the modulator (L705, C734, C735, T701, L712, C721, C722)

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Nokia Customer Care 7 - RF Description and Troubleshooting

136 Tune_GSM1900_Q_DC_Offset-6 6 mV x Check TXIQ Signals

with ocilloscope (TXIOUTP, TXIOUTN, TXQOUTP, TXQOUTN)

137 Tune_GSM1900_I_DC_Offse

t_2

138 Tune_GSM1900_Q_DC_Offs

et_2

139 Tune_GSM1900_IQ_Phase_

Difference

140 Tune_GSM1900_IQ_Amplit

ude_Difference

141 Tune_GSM1900_IQ_Phase_

Difference_2

142 Measure_GSM1900_TX_IQ Action x

143 Check_GSM1900_TX_IQ_f0 -120 -35 dBc x

144 Check_GSM1900_TX_IQ_f0

_+67710

145 MainSequence MMC_test 0 0

146 Selftest_A 0 0

149 Measure_GSM850_Tx_On_

Current

-6 6 mV x

-6 6 mV x Check TX Balun T701

70 11 0 deg x

-1,2 1,2 mV x Maybe Mjölner N601

70 11 0 deg x

-120 -40 dBc x

1,3 2,1 A

must be replaced

150 Measure_GSM1900_Tx_On

_Current

0,8 1,5 A

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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care

APPENDIX B: FINUI Test Cases with Hints for Repair

Table 2:

testplan aquarius_440 (FinUI)

Step Nr. Sequence Name Step Name Low Limits High Limits Unit RF Test Repair comment

1 MainSequence Copyright * 2004

Nokia Mobile Phones

2 Keypad_Start_Test0 10

3 Calibration Ini-

tialize

4 Check Battery

Voltage

5 Testmode Current

Meas

6 Set Voltage (3V6) 0 10 -

7 Initialize Keithley

2015

8 Charge Volt &Curr -0,6 -0,1 A

9 Charge Volts ADC 57000 63000 ADC

10 Charge Current

ADC

Label

PassFailTest

0 1023 ADC

35 150 mA

PassFailTest

3600 5000 ADC

11 Check Headset

Detect

12 Check Sim Card

Inserted

13 Meas Vibra Cur-

rent

14 Check Keypad

func

15 Audio Robot

Move To MIC

16 Measure XEAR-

>MIC @1kHz

17 Move robot On

the Earp

18 Measure EAR-

>XMIC @1kHz

19 Move robot Home -0,5 0,5 -

17 17 -

PassFailTest

45 120 mA

1 1 rpt

0 10 -

-6 6

-0,5 0,5 -

-6 6 dB

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Nokia Customer Care 7 - RF Description and Troubleshooting

20 Measure IHF-

>XMIC @800Hz

21 Vision: Load

group Aquarius

22 Vision: Start LED

test

23 Vision: Check LED

test

24 Vision: Start

LED_OFF test

25 Vision: Check

LED_OFF test

26 Vision: Start PAT-

TERN 'M' test

27 Vision: Check

PATTERN 'M' test

28 Vision: Start

LCD_OFF

29 Vision: Check

LCD_OFF

-6 6 dB

Action

1 1

Action

1 1

Action

1 1

Action

1 1

30 Stop Vision test in

phone

31 BlueTooth BER

Test

32 Initialize PCI PassFailTest

33 PrePare Call for

GSM850

34 SetFast-

ServeChannel GSM850

35 WaitForService

MS GSM850

36 MS Originated

Call Test GSM850

37 GSM850 High Handoff to

GSM850 C=H TxL=5

38 Meas GSM850 All

C=H TxL=5

Action

-0,1 0,1

Action X

PassFailTest X

0 40 sec X

PassFailTest X

0 5 sec X

0 1000 sec X

39 GSM850 POWER

BURST C=H TxL=5

31 35 dBm X

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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care

40 GSM850 BURST

t=1 C=H TxL=5

41 GSM850 BURST

t=2 C=H TxL=5

42 GSM850 BURST

t=4 C=H TxL=5

43 GSM850 BURST

t=9 C=H TxL=5

44 GSM850 BURST

t=11 C=H TxL=5

45 GSM850 BURST

t=12 C=H TxL=5

46 GSM850 FREQ

ERR PEAK C=H TxL=5

-110 -30 dB X Burst template failure: Check Detector Diode V801 and Loop

-70 -6 dB X components: C804, R802, C805, R801, C803.

-1 1 dB X also consider components near Mjölner: R708,R707, R706,

-1 1 dB X C706 or C831.

-70 -6 dB X

-90 -30 dB X

-90 90 Hz X Check shielding and antenna connection

47 GSM850 PHASE

ERR RMS C=H TxL=5

48 GSM850 PHASE

ERR PEAK C=H TxL=5

49 GSM850 Ramp-

ing Spectra +400Khz C=H TxL=5

50 GSM850 Ramp-

ing Spectra 400Khz C=H TxL=5

51 GSM850 Mod

Spectra +400Khz C=H TxL=5

52 GSM850 Mod

Spectra -400Khz C=H TxL=5

53 GSM850 BER -

102 C=H TxL=5

0 5 deg X Check the follow-

ing capacitors for correct soldering:

0 20 deg X C610, C740, C741,

C626, C710, C711, C712

-90 -19 dBm X

-100 -60 dBc X Check C715 and C716 for correct soldering

-100 -60 dBc X Check Buffer Circuit around V802

0 2 % X Check antenna

connection, check Filter C742, C743 and L610

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Nokia Customer Care 7 - RF Description and Troubleshooting

54 GSM850 SACCH -

102 C=H TxL=5

55 Handoff to

GSM850 C=H TxL=6

56 Meas GSM850 All

C=H TxL=6

57 GSM850 POWER

BURST C=H TxL=6

58 GSM850 Tx Line-

arity C=H TxL=5 & 6

59 Handoff to

GSM850 C=H TxL=19

60 Meas GSM850 All

C=H TxL=19

61 GSM850 POWER

BURST C=H TxL=19

4 14 - X Check Z601 and

RX850 Path (Z604, C634, L606, L607)

0 5 sec X

0 1000 sec X

29 33 dBm X

0,5 3,5 dBm X

0 5 sec X

0 1000 sec X

2 8 dBm X

62 GSM850 BURST

t=1 C=H TxL=19

63 GSM850 BURST

t=2 C=H TxL=19

64 GSM850 BURST

t=4 C=H TxL=19

65 GSM850 BURST

t=9 C=H TxL=19

66 GSM850 BURST

t=11 C=H TxL=19

67 GSM850 BURST

t=12 C=H TxL=19

68 GSM850 Low Handoff to

GSM850 C=L TxL=5

69 Meas GSM850 All

C=L TxL=5

70 GSM850 POWER

BURST C=L TxL=5

-110 -25 dB X

-70 -1 dB X

-1 1 dB X

-70 -1 dB X

-90 -25 dB X

0 5 sec X

0 1000 sec X

31 34 dBm Check shielding

and antenna connection

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RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care

71 GSM850 PHASE

ERR RMS C=L TxL=5

72 GSM850 PHASE

ERR PEAK C=L TxL=5

73 GSM850 Ramp-

ing Spectra +400Khz C=L TxL=5

74 GSM850 Ramp-

ing Spectra 400Khz C=L TxL=5

75 GSM850 Mod

Spectra +400Khz C=L TxL=5

76 GSM850 Mod

Spectra -400Khz C=L TxL=5

77 GSM850 Mid Handoff to

GSM850 C=M TxL=5

0 5 deg X Check the follow-

ing capacitors for correct soldering:

0 20 deg X C610, C740, C741,

C626, C710, C711, C712

-90 -19 dBm X

-90 -19 dBm X Check C715 and C716 for correct soldering

-100 -60 dBc X Check Buffer Circuit around V802

-100 -60 dBc X

0 5 sec X

78 Meas GSM850 All

C=M TxL=5

79 GSM850 POWER

BURST C=M TxL=5

80 GSM850 PHASE

ERR RMS C=M TxL=5

81 GSM850 PHASE

ERR PEAK C=M TxL=5

82 GSM850 Ramp-

ing Spectra +400Khz C=M TxL=5

83 GSM850 Ramp-

ing Spectra 400Khz C=M TxL=5

84 GSM850 Mod

Spectra +400Khz C=M TxL=5

0 1000 sec X

31 35 dBm Check shielding

and antenna connection

0 5 deg X Check the follow-

ing capacitors for correct soldering:

0 20 deg X C610, C740, C741,

C626, C710, C711, C712

-90 -19 dBm X

-90 -19 dBm X Check C715 and C716 for correct soldering

-100 -60 dBc X Check Buffer Circuit around V802

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Nokia Customer Care 7 - RF Description and Troubleshooting

85 GSM850 Mod

Spectra -400Khz C=M TxL=5

86 PCS1900 High Handoff to

PCS1900 C=H TxL=0

87 Meas PCS1900 All

C=H TxL=0

88 PCS1900 POWER

BURST C=H TxL=0

89 PCS1900 BURST

t=1 C=H TxL=0

90 PCS1900 BURST

t=2 C=H TxL=0

91 PCS1900 BURST

t=4 C=H TxL=0

92 PCS1900 BURST

t=9 C=H TxL=0

93 PCS1900 BURST

t=11 C=H TxL=0

-100 -60 dBc X

0 5 sec X

0 1000 sec X

28 32 dBm X

-110 -30 dB X

-70 -6 dB X

-1 1 dB X

-70 -6 dB X

94 PCS1900 BURST

t=12 C=H TxL=0

95 PCS1900 FREQ

ERR PEAK C=H TxL=0

96 PCS1900 PHASE

ERR RMS C=H TxL=0

97 PCS1900 PHASE

ERR PEAK C=H TxL=0

98 PCS1900 Ramp-

ing Spectra +400Khz C=H TxL=0

99 PCS1900 Ramp-

ing Spectra 400Khz C=H TxL=0

100 PCS1900 Mod

Spectra +400Khz C=H TxL=0

-90 -30 dB X

-180 180 Hz X Check shielding and antenna connection

0 5 deg X Check the follow-

ing capacitors for correct soldering:

0 20 deg X C610, C740, C741,

C626, C710, C711, C712,

-90 -22 dBm X

-90 -22 dBm X Check C715 and C716 for correct soldering

0 15 dB X Check TX1900

MHZ path (T701 and surrounding components)

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101 PCS1900 Mod

Spectra -400Khz C=H TxL=0

102 PCS1900 BER -

102 C=H TxL=0

103 PCS1900 SACCH -

102 C=H TxL=0

104 Handoff to

PCS1900 C=H TxL=1

105 Meas PCS1900 All

C=H TxL=1

106 PCS1900 POWER

BURST C=H TxL=1

107 PCS1900 Tx Line-

arity C=H TxL=0 & 1

0 15 dB X

0 2 % X Check antenna

connection, Check Filter C742,C743 and L610

4 12 - X Check RX1900

path (Z601, Z603, C604, L608, L609)

0 5 sec X also look at RXIQ

Signal

0 1000 sec X

26 30 dBm X

0,5 3,5 dBm X

108 Handoff to

PCS1900 C=H TxL=15

109 Meas PCS1900 All

C=H TxL=15

110 PCS1900 POWER

BURST C=H TxL=15

111 PCS1900 BURST

t=1 C=H TxL=15

11 2 PCS1900 BURST

t=2 C=H TxL=15

11 3 PCS1900 BURST

t=4 C=H TxL=15

11 4 PCS1900 BURST

t=9 C=H TxL=15

0 5 sec X

0 1000 sec X

-3 3 dBm X Burst template failure: Check Detector Diode V801 and Loop

-110 -23 dB X components: C804, R802, C805, R801, C803.

-70 -1 dB X also consider components near Mjölner: R708,R707, R706,C706,

-1 1 dB X or C831.

-1 1 dB X

11 5 PCS1900 BURST

t=11 C=H TxL=15

11 6 PCS1900 BURST

t=12 C=H TxL=15

-70 -1 dB X

-90 -23 dB X

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11 7 PCS1900 Low Handoff to

PCS1900 C=L TxL=0

11 8 Meas PCS1900 All

C=L TxL=0

11 9 PCS1900 POWER

BURST C=L TxL=0

120 PCS1900 PHASE

ERR RMS C=L TxL=0

121 PCS1900 PHASE

ERR PEAK C=L TxL=0

122 PCS1900 Ramp-

ing Spectra +400Khz C=L TxL=5

123 PCS1900 Ramp-

ing Spectra 400Khz C=L TxL=5

0 5 sec X

0 1000 sec X

28 32 dBm

0 5 deg X Check shielding

and antenna connection

0 20 deg X Check the follow-

ing capacitors for correct soldering:

-90 -22 dBm X C610, C740, C741, C626, C710, C711, C712,

-90 -22 dBm X

124 PCS1900 Mod

Spectra +400Khz C=L TxL=5

125 PCS1900 Mod

Spectra -400Khz C=L TxL=5

126 PCS1900 Mid Handoff to

PCS1900 C=M TxL=0

127 Meas PCS1900 All

C=M TxL=0

128 PCS1900 POWER

BURST C=M TxL=0

129 PCS1900 PHASE

ERR RMS C=M TxL=0

130 PCS1900 PHASE

ERR PEAK C=M TxL=0

0 15 dB X Check C715 and

C716 for correct soldering

0 15 dB X Check TX1900

MHZ path (T701 and surrounding components)

0 5 sec X

0 1000 sec X

28 32 dBm

0 5 deg X Check shielding

and antenna connection

0 20 deg X Check the follow-

ing capacitors for correct soldering:

131 PCS1900 Ramp-

ing Spectra +400Khz C=M TxL=5

-90 -22 dBm X C610, C740, C741,

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C626, C710, C711, C712,

RH-47 Company Confidential 7 - RF Description and Troubleshooting Nokia Customer Care

132 PCS1900 Ramp-

ing Spectra 400Khz C=M TxL=5

133 PCS1900 Mod

Spectra +400Khz C=M TxL=5

134 PCS1900 Mod

Spectra -400Khz C=M TxL=5

135 MainSequence EndCall Action X

136 Meas Vibra (Sen-

sor) SNR_3

137 SelfTest C 0 0

138 Sleep Mode Cur-

rent

139 Off Mode Current -0,2 0,2 mA

-90 -22 dBm X

0 15 dB X Check C715 and

0 15 dB X Check TX1900

16 50 dB(S

NR)

0,1 3,5 mA

C716 for correct soldering

MHZ path (T701 and surrounding components)

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APPENDIX C: Component Placement with Test Points & Detailed Description

See 4 pages with

Synthesizer Test Points (1 page) Receiver Test Points (1 page) Transmitter Test Points (2 pages)

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Testpoint RFBUSCLK, DA, EN1

Active Unit RX

Vco out

Burst

Operation

Mode

~ 2V

Channel 190

Signal

Amplitude

Graph RFBusEn RFBusClk RFBusDa

VR7

RFBusDa

RFBusEn1

VR1A VR5

Testpoint RFCLK

Active Unit RX

Continuous

Operation

Mode

Channel 190

DC offset 0.8V

RFBusClk

Reset

~600mV

Signal

Amplitude

Graph (measured

with probe (to

VIO VR3 VREF1

be specified)

Continuous

or burst

Testpoint VR1A

Band GSM850

Active

unit

Operation

mode

Channel 190

DC Level 4.75V

Continuous

or burst

Testpoint VR5

Band GSM850

Active

unit

Operation

mode

Channel 190

DC Level 2.78V

U_tune

Continuous

or burst

Testpoint VIO

Band GSM850

Active

unit

Operation

mode

Channel 190

RFCLK

Continuous

Active

unit

or burst

Operation

mode

Channel 190

DC Level 1.35V

Synthesizer Test Points

U_tune / VCO out

TX RX

Testpoi

Band GSM850 GSM1900

Active

unit

Mode Continuous Continuous

Channel 128 810

Freq. 3296.8 MHz 3979.6 MHz

DC lev. 0.8 V 3.55 V

RF Pwr

(hp

probe)

Testpoint VREF1

Band GSM850

Continuous

or burst

Testpoint VR3

Band GSM850

Active

unit

Operation

mode

Channel 190

DC Level 2.8V

Testpoint VR7

Band GSM850

Active

unit

DC Level 1.8V

Continuous

or burst

Operation

mode

Channel 190

DC Level 2.8V

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burst

Testpoint VR4

Band GSM850

RX/TX RX

Mode Cont. or

Channel 190

DC level ~ 2.78V

Testpoint RX1900 RX850

Band 1900 850

RX/TX RX RX

Mode Continuous Continuous

AGC 14 14

Channel 661 190

Inp Pwr. -60dBm -60dBm

Inp.Freq. 1960.0677 881.6677

VR4

1900 RX

-66 r 2 -62 r 2

Probe Pwr

(hp probe)

Testpoint Switch in

850

Band 850 1900

RX/TX RX RX

Mode Cont. Cont.

AGC 14 14

VC2

Channel 190 661

Input pwr -60dBm -60dBm

Switch in

-65 r 2. -66 r 2

Inp.Freq 881.6677 1960.0677

Probed

nt in

VC1

-62 r 2. -65 r 2

Testpoint Ant in

Band 850 1900

RX/TX RX RX

Mode Cont. Cont.

AGC 14 14

Channel 190 661

Input pwr -60dBm -60dBm

Inp.Freq 881.6677 1960.0677

Probed

Pwr (hp )

VC2

VANTH

VANTL

Testpoint VC1

VC2

VANTH

VANTL

DC Level 0 V 0 V

Pwr (hp )

Testpoint VC1, VC2

Band GSM1900

RX/TX RX

Mode Continuous

AGC 14

Channel 661

INML

Testpoint INPL

Band GSM1900

RX/TX RX

Mode Continuous

AGC 14

Channel 661

Inp. Pwr -60dBm

INML

Testpoint INPL

Band GSM850

RX/TX RX

Mode Continuous

AGC 14

Channel 190

Inp. Pwr -60dBm

Receiver Test Points

INPL INML INMH INPH

-72 r 3

0.8V

Inp. Freq 1960.0677

Probe

Pwr (hp)

DC Level

-63 r 2

0.8V

Inp. Freq 881.6677

Probe

Pwr (hp)

DC Level

RXIINN

(J607)

LNA bias

RXIINP

(J606)

RXQINN

(J609)

RXQINP

(J608)

Testpoint VC1, VC2

Band GSM850

RX/TX RX

Mode Continuous

AGC 14

Channel 190

Testpoint VC1

DC Level 0 V 0 V

Channel 190 or 661

Input Power -80dBm

MHz

Input Freq. 881.6677 or 1960.0677

Signal Ampl. 1.2Vpp

DC offset 1.35Vdc

Frequency 67kHz

Graph

(typical for all

TP and bands)

RXQINN (J609)

RXIIINP (J606)

RXIINN (J607)

Band 850 and 1900

RX/TX RX

Mode Continuous

Testpoint RXQINP (J608)

AGC 14

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4 r 3 0 r 3

Testpoint Pin_850 Pin_1900

Band 850 1900

RX/TX TX TX

Mode Burst Burst

Channel 190 661

PCL 5 0

Power(hp)

Testpoint VTXB_850 (supply voltage for TX Buffer

Band 850

RX/TX TX

Mode Burst

Graph

Trigger

TXP

VTXB_

850

(~2.75V) Testpoint VBD (supply voltage for Detector

Band GSM850 / 1900

RX/TX TX

Mode Burst

Graph

Trigger

TXP VBD

(~2.8V)

VTXB_850

VPD_1900

VPD_850

TXIOUTP

Pin_

TXIOUTQ

850

Pin_

1900

oP ut_

Pout_

1900

VR2 VR5

850

VBD

DET

Ant

VC2 VC1

VR3

Vref1

33 r 2 30 r 2

Band 850 1900

RX/TX TX TX

Mode Burst Burst

Channel 190 661

PCL 5 0

Testpoint Pout850 Pout1900

Band 850 1900

RX/TX TX

Testpoint Ant

Testpoint VR3

Band GSM850

RX/TX RX

Power(hp)

32.5 r 2 29.5 r 2

Mode Burst

Channel 190 661

PCL 50

Power (hp)

or burst

Mode Continuous

Channel 190

DC Level 2.8V

or burst

TXP TXC TXQOUTP TXQOUTN

Testpoint VREF1

Band GSM850

RX/TX TX

Mode Continuous

Channel 190

DC Level 1.35V

Transmitter Test Points (1/2)

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VPD_1900

TXIOUTP

Pin_

TXIOUTQ

VTXB_850 VPD_850

850

Pin_

1900

oP ut_

Pout_

1900

VR2 VR5

850

VBD

DET

VC2 VC1

VR3

Vref1

Transmitter Test Points (2/2)

Testpoint VPD 1900 VPD_850

Band 1900 850

RX/TX TX TX

Mode Burst Burst

Graph

GSM1900

(850)

Testpoint VDET

Band GSM850

RX/TX TX

Mode Burst

Graph

PCL 5 (0)

PCL 15 (10)

PCL 19 (15)

VDET

PCL 5 PCL 15 PCL 19

TXP TXC TXQOUTP TXQOUTN

Band GSM1900

Graph VDET

PCL 0 PCL 10 PCL 15

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APPENDIX D: Calibration of the DA-17/JXS-2 jig, Autotuning and BT Testing

Requirements

• U.S. AMS requirement is to align/check the phone completely assembled (in addition to the alignment in the MJ-21 repair jig which is still possible).

• RF couplers must be used because there is no RF connector on RH-47.

• DUT must be placed in a shielded box (JXS-2) to achieve accuracy and in order to avoid external interference.

• First Symbian OS phone to support “RF autotuning“.

• Normal to Local mode switching must be done manually as Symbian OS does not support SW switching.

Calibration Problems

• PA (Hitachi PF 08130B-TB) O/P power is very sensitive to LOAD variations.

• GSM Dual band antenna match is only -5 dB on GSM850 TX band.

• Battery BL-6C is part of the antenna (GSM850) – but in the DA-17 jig, the battery is removed -> antenna resonance is shifted!

• Coupler is self-resonant and must be very close to the GSM antenna -> Further resonance shift of GSM antenna.

=> very careful “active calibration” method is needed

Active calibration: basic idea

• DA-17/JXS-2 system is seen as a “black box”.

• Calibration of the “black box” can be done with any functional phone sample and MJ-21 repair jig.

• Once the calibration has been done, no changes inside the black box are allowed (except removing and fitting the phone).

• All calibration data from the black box is based on conducted measurement with MJ-21.

• The best accuracy is achieved for the highest TX power level (PCL0 / PCL5).

Calibration procedure setup MJ-21

The initial setup is shown below. The phone is disassembled and the engine PWB is

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placed in the MJ-21 which is connected via Fbus to the Phoenix PC.

The phone is in local mode and VCC = 3.6V

The attenuation values for all components are known:

MJ-21:

• 0.2dB (850)

• 0.6 dB (1900)

Cable (in this case):

• 6.9dB (850)

• 7.8dB (1900)

Note that attenuation values are equal for all channels on each band.

Data acquisition MJ-21

The following data must be measured in the MJ-21 jig:

• TX power on MID channel (GSM850 PCL=5, GSM1900 PCL=0)

• RX RSSI level on LOW channel (GSM850, GSM1900)

• RX RSSI level on MID channel (GSM850, GSM1900)

• RX RSSI level on HIGH channel (GSM850, GSM1900)

The attenuation values of the cables (incl. power splitter when used) and the MJ-21 jig must be taken into account when measuring the data.

The measurement is done in local mode.

TX power is measured in the Zero Span mode with RBW being 3MHz or more. The RBW value also depends on the RF analyser used.

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MJ-21 TX power measurement

Procedure:

1 Start the phone in Local mode.

2 From the Tuning menu, choose “Tx Power Level Tuning”.

The “Power Level Tuning” window opens.

3 Select the band and power level to be measured.

MJ-21 GSM850 power measurement

Procedure:

1 Move the cursor to PCL=5.

2 Align the phone exactly to 32.5 dBm using the “+” and “-” keys.

3 Click the “Save & Continue” button

- RF analyser set to mid channel (190) 836.6MHz

- Zero-Span

- RBW >=3MHz

- Video Trigger

- RMS power

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MJ-21 GSM1900 power measurement

After the GSM850 power measurement is done the phone switches automatically to the GSM1900 band.

Move the cursor to PCL=0 and align the phone exactly to 29.5 dBm.

- RF analyser set to mid channel (661) 1880MHz

- Zero-Span

- RBW >=3MHz

- Video Trigger

- RMS power

MJ-21 receiver RSSI measurement

RSSI measurement must be performed on Low, Mid and High channels on both bands (GSM850 and 1900).

Table 3: Channel assignment

The following frequencies must be set to the RF generator used for RSSI:

Low [M Hz] Mid [MHz] High [MHz]

GSM850 RX 869,26771 881,66771 893,86771

GSM1900 RX 1930,26771 1960,06771 1989,86771

MJ-21 RSSI procedure

1 Start the phone in Local mode.

HighMidLowBand

HighMidLowBand 251190128GSM 850

251190128GSM 850 810661512G SM 1900

810661512G SM 1900

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2 From the Testing menu, choose “RSSI Reading”.

The “RSSI Reading” window opens with further settings for the RSSI reading feature.

MJ-21 RSSI values

Use the default settings:

• Measuring mode -> Sum vector

• Reading mode -> Continuous

After selecting the above settings, click the Start button.

Set the RF generator power to –60dBm (taking into account the losses caused by cables and MJ-21 jig mentioned before) and frequencies from the table.

Perform the measurement on Low, Mid and High channels on both bands.

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MJ-21 example figures

Exam ple valueParam eter

32.5dBmM J21_TX_850

29.5dBmM J21_TX_1900

-61.5dBmM J21_R X_850_LOW

-60.7dBmM J21_R X_850_M ID

-60.7dBmM J21_R X_850_H IGH

-6 1 d B mM J21_R X_1900_LOW

-60.6dBmM J21_R X_1900_M ID

-60.5dBmM J21_R X_1900_HIGH

Before assembling the phone and setting up the shielded box JXS-2 with DA-17, the parameters must be known.

JXS-2 / DA-17 “blackbox” setup

• The assembled phone is placed on the DA-17 test adapter. This must be fitted with the AQ_AMSCPL_01 directional coupler assembly and the Bluetooth directional coupler assembly.

• A 3 dB attenuator is connected to the SMA-socket of the GSM coupler. A short coaxial cable is connected to the SMA-feedthrough on the backside of JXS-2.

• A ferrite bead is placed on the coaxial cable at a distance of 4cm from the SMA connector at the GSM coupler.

Data acquisition JXS-2 / DA-17

The switch on the left side of DA-17 must be set to Local mode (lower position).

The supply voltage VCC=3.8V is fed through the JBV-1 adapter.

The shielded box has to be closed for all RF measurements.

The same parameters must be measured as for MJ-21. Follow the instructions given earlier.

• TX Power on MID channel (GSM850 PCL=5, GSM1900 PCL=0)

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• RX RSSI level on LOW channel (GSM850, GSM1900)

• RX RSSI level on MID channel (GSM850, GSM1900)

• RX RSSI level on HIGH channel (GSM850, GSM1900)

The cable attenuation values (incl. power splitter when used) must be taken into account in the measurement process. However, disregard the attenuation of the “black box” because this is the value to be determined.

DA-17/JXS-2 example figures

After the measurement in the “black box”, the following parameters are determined (typical values listed below).

Exam ple valueParam eter

24.5dBmDA17_TX_850

22.5dBmDA17_TX_1900

-70.5dBmDA17_RX_850_LOW

-69.5dBmDA17_RX_850_M ID

-69.6dBmDA17_RX_850_HIGH

-6 8 d B mDA17_RX_1900_LOW

-6 8 d B mDA17_RX_1900_M ID

-68.3dBmDA17_RX_1900_HIGH

The calibration factor needed for the RF autotuning in DA-17/JXS-2 is calculated by subtracting the DA-17 value from the MJ-21 value. This must be done for each of the eight values.

Setting cable loss for Auto-Tuning

Phoenix allows you to set separate loss values at different frequencies for cables and the jig.

Procedure:

1 From the Tuning menu, choose Set Loss.

2 Enter the cable losses (incl. Power splitter if used) for GSM850 at 824 and 894

MHz and for GSM1900 at 1850 and 1990 MHz.

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The values in between are interpolated.

3 To store the data, click Save.

Setting DA-17/JXS-2 calibration loss

Procedure:

1 Enter the calibration factors (DA-17 values subtracted from the MJ-21 values) to

the Jig column.

Note that there are different calibration factors for the TX and RX channels

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2 Enter the loss values for the RX Low, Mid and High channels on both bands.

3 If the jig “DA-17” is not defined yet, you must generate it by clicking the Add

button. Assign it the name DA-17.

4 Click Save.

Assigning the product to the jig

To make the calibration data valid, it is necessary to assign the DA-17 jig to the product “RH-47”.

Procedure:

1 Click the Product tab.

2 Enter “RH-47” into the Product column.

3 From the “Used Jig” dropdown menu, choose DA-17.

4 First click Save and then Close.

You are ready for Autotuning.

GPIB Setup for Autotuning

Prerequisites:

• GPIB card on Phoenix PC must be installed and working.

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Procedure:

1 Connect the RF analyser and RF generator to the GPIB card.

2 Open Tools -> Options -> GPIB cards.

3 Click the Start button.

Generators:

• R&S CMU200

•R&S SME

• Agilent ESG

Analyzers:

• R&S CMU200

• R&S FSx series

• Agilent PSA/VSA

Use different GPIB address for different devices!

Autotuning

Procedure:

1 To start tuning the phone in the DA-17/JXS-2 box, choose Auto-Tune from the

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Tuning menu.

2 Click the Tune button in the Auto-Tune window and wait approximately 2 min-

utes before the autotuning algorithm has finished.

Make sure that the “Autotune_RH47.ini” file is stored in the Phoenix directory.

Bluetooth test setup

DA-17 Bluetooth coupler is connected to RF I/O via a 30 dB attenuator

Bluetooth testing

Procedure:

1 From the “Operating mode” dropdown menu, choose Test.

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2 From the Testing menu, choose “Bluetooth LOCALS”.

3 In the “BT Software Operational Mode” pane, choose Normal.

4 Enter the BD address of BT Box 2 on the “Counterpart BT Device Address” line.

BER must be <0.1%.

5 Click the “Run BER Test” button and wait approximately 2 seconds for the result.

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Nokia N-GageQDa Service Manual 07 rh47 RF.book

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

Abbreviations

Introduction to RF

RF power supply configuration

General specifications of transceiver RH-47

Introduction to RF Troubleshooting

Printed Wired Board

RF key component placement

RF test points

Test points RF supply voltages

RF test points Mjoelner chamber

RF test points VCO chamber

RF test points PA chamber

Test points BB area

Receiver 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

Receiver troubleshooting

Rx signal paths

Antenna switch (RX/TX Switch)

RX front-end

RX paths of Mjoelner RF ASIC

Transmitter

General instructions for TX troubleshooting

TX signal paths

Antenna switch (TX/RX switch)

GSM850 transmitter

General instructions for GSM850 TX troubleshooting

Troubleshooting for GSM850 transmitter

GSM1900 (PCS) transmitter

General instructions for GSM1900 TX troubleshooting

Troubleshooting for GSM1900 transmitter

Synthesizer

General instructions for synthesizer troubleshooting

Checking synthesizer operation

26 MHz reference oscillator (VCXO)

Troubleshooting for PLL synthesizer

Frequency lists

GSM850

GSM1900

DC Supply Current Check

Phoenix Tunings after Repairs

APPENDIX A: FLALI Test Cases with Hints for Repair

APPENDIX B: FINUI Test Cases with Hints for Repair

APPENDIX C: Component Placement with Test Points & Detailed Description

Requirements

Calibration Problems

Active calibration: basic idea

Calibration procedure setup MJ-21

Data acquisition MJ-21

MJ-21 TX power measurement

MJ-21 GSM850 power measurement

MJ-21 GSM1900 power measurement

MJ-21 receiver RSSI measurement

MJ-21 RSSI procedure

MJ-21 RSSI values

MJ-21 example figures

JXS-2 / DA-17 “blackbox” setup

Data acquisition JXS-2 / DA-17

DA-17/JXS-2 example figures

Setting cable loss for Auto-Tuning

Setting DA-17/JXS-2 calibration loss

Assigning the product to the jig

GPIB Setup for Autotuning

Autotuning

Bluetooth test setup

Bluetooth testing