Nokia 9500 Service Manual 07 ra2 RF.book

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Nokia Customer Care

7 - RF Description and

Troubleshooting

Issue 1 09/04 COMPANY CONFIDENTIAL

RA-2/3

Nokia Customer Care

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RA-2/3 7 - RF Description and Troubleshooting Nokia Customer Care

Table of Contents

Page No

CMT RF................................................................................................................. 5

Top-level description.......................................................................................... 5

RA-2 test point locations................................................................................... 6

Test points ......................................................................................................... 8

RF implementation in RA-2/3........................................................................... 11

Frequency plan ..............................................................................................11

RF block diagram ...........................................................................................12

Antenna switch module (ASM) .......................................................................12

DC characteristics ..........................................................................................13

Regulators................................................................................................. 13

DC supply currents.................................................................................... 13

Typical current consumption...................................................................... 14

Power distribution diagram........................................................................ 15

RF characteristics ............................................................................................ 16

Channel numbers and frequencies ................................................................ 16

RF Troubleshooting..........................................................................................17

Receiver description and troubleshooting........................................................ 17

Rx front end ...................................................................................................17

Antenna .........................................................................................................17

Receiver characteristics .................................................................................18

General instructions for Rx troubleshooting ...................................................19

Troubleshooting diagram for GSM850 receiver......................................... 23

Troubleshooting diagram for GSM900 receiver......................................... 24

Troubleshooting diagram for GSM1800 receiver....................................... 25

Troubleshooting diagram for GSM1900 receiver....................................... 26

Transmitter description and troubleshooting.................................................... 27

Power amplifier ..............................................................................................27

RF ASIC Helgo ..............................................................................................27

AFC function ..................................................................................................28

Transmitter characteristics .............................................................................28

General instructions for Tx troubleshooting ................................................... 28

Transmitter troubleshooting diagram......................................................... 30

HELGO IC troubleshooting diagram.......................................................... 31

PA and antenna switch troubleshooting diagram...................................... 32

Pictures of transmitter signals ................................................................... 33

Additional information for EDGE troubleshooting ............................................ 35

Transmitter EDGE troubleshooting diagram.............................................. 36

HELGO EDGE troubleshooting diagram................................................... 37

PA and antenna switch EDGE troubleshooting diagram........................... 38

Pictures of EDGE transmitter signals .............................................................39

Synthesizer description and troubleshooting................................................... 43

Frequency synthesizers .................................................................................43

General instructions for synthesizer troubleshooting .....................................43

Troubleshooting diagram for synthesizer .................................................. 44

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Table of Contents

Page No

Pictures of synthesizer signals.................................................................. 45

Frequency Lists ..............................................................................................48

GSM850 .................................................................................................... 48

GSM900 (including EGSM900)................................................................. 49

GSM1800 .................................................................................................. 50

GSM1900 .................................................................................................. 51

RF tunings after repairs ................................................................................... 52

WLAN RF Description....................................................................................... 53

RF operating modes ........................................................................................ 54

Transmitter .....................................................................................................54

Receiver .........................................................................................................55

Synthesizer .................................................................................................... 55

Antenna ..........................................................................................................55

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CMT RF

■ Top-level description

The RF module performs the necessary high frequency operations of the GSM850/EGSM900/ 1800/1900 tripleband (EDGE) engine. Both the transmitter and receiver have been implemented by using direct conversion architecture which means that the modulator and demodulator operate at the channel frequency.

The core of the RF is an application-specific integrated circuit, Helgo. Another core component is a power amplifier module which includes two amplifier chains, one for GSM850/EGSM900 and the other for GSM1800/GSM1900.

Other key components include

• 26 MHz VCTCXO for frequency reference

• 3296-3980 MHz SHF VCO (super high frequency voltage controlled oscillator)

• Antenna switch module (ASM)

• Four SAW filters

The control information for the RF is coming from the baseband section of the engine through a serial bus, referred later on as RFBus.

The whole RF circuitry is located on one side of the 8-layer PWB. EMC leakage is prevented by using a metal cans. The RF circuits are separated into two

blocks.

• PA, ASM, LNA, baluns for Rx/Tx and Rx/Tx SAWs.

• Helgo RF IC, VCO + balun, VCTCXO, baluns and EGSM Rx filter

The RF transmission lines constitute of striplines and microstriplines after PA.

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■ RA-2 test point locations

Figure 1: Top view

N6400 pins 39-42

C2104

C2105

R2106

C4104

R2125

L7830

Z7808

R6304

N6301 pin3

C4105

J2809

J8120

C2210

C6404

R6402

R6405

C5001

R5001

R4100

R2000

L2335

C6428

C6433

C6455 C6456

C2108

C2107

J2 280

R2126

R2004

G6400 pin3

N6300 pin3

N6405 pin2

C6407

L4201

C4203

C5000

J4100

J4803

R4101

C2881

C2204

R2902

J2803

J28 00

L2330 L2333

C2202L2206

L7702

L2331

V7802 pins1,6,4

C7714

R7711

Z7800

C7713

RefClk

R6411

R6428

C6446

C6445

R6404

J4805

C4800

C4801

R6043

J7503

J7510

R7522

R7525

L7823

L7822

C2006

C5083

C5089

R4808

R4801

J4802

J7 450

C4819

J7511

L7810

L2332

C2005

C6302

D6310 pins 5&6

C6310

PURX

R4800

R4418

G7500

C7506

C2232

L2334

L7805

VCTRL

L7709

L7710

R7715

L7700

N4490 pin3&4

C6401

R6305

L4202

N6303 pin4

N6303 pin3

C4211

R4802

R4415

R7500

C 5837

C7553

C7536

C7535

L7809

Z7809

C7510

Power 2.8

Power 1.8

C6307

C6314

N6300 pin5

C4204

J7509

J7502

J7501

C7551

C7520

N6302 pin3

J4815

G7501

R7725

C7707

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Figure 2: Bottom view

N4400 B-Cover switch

GND

R4202

L2020

X2021 pins

Charge

11-14

R2001

SIM

C4202

J4413

J5107

J5106

C2037

R4422

J4414

Trace

5108J

102J5

J5104

Production

testpoints

X2021 pins 6&7

N6402 pins 1&3

J1053

C2038

Bluetooth

Mic

MMC

C5200

R5202

J1150

J31 80

50J15

J51 00

30J17

J3104

J3109

J3 610

J3103

J2122 J2120 J2121

8J31 2

J3102

J3101

J3180

J3181

J3100

N7100

Battery

J0222

J2021

20J20

IHF

J2032

Zocus

J2031

J2033

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■ Test points

Table 1: Rx test points

Signal name: Ref:

LNA_VCC V7802 LNA_IN V7802 LNA_P V7802 RXI J7510 RXQ J7511

Table 2: Antenna switch test points

Signal name: Ref:

VANT_1 Z7800 VANT_2 Z7800 VANT_3 Z7800 GSM_Rx Z7800 DCS_Rx Z7800 PCS_Rx Z7800 TX_IN_EGSM/850 Z7800

Table 3: Helgo serial interface test points

Signal name: Ref:

RFBusClk J7501 RFBusEna1 J7502 RFBusData J7509 Reset J7503

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Table 4: Synthesizer test points

Signal name: Ref:

VCO_out G7500 VCTCXO_out G7501

Table 5: GSM900/850 Rx helgo input test points

Ref:

RX filter Z7809 Inductor L7809 Inductor L7810

Table 6: GSM1800 Rx helgo input test points

Filter Z7808 Inductor L7823 Inductor L7822 Inductor L7830

Table 7: GSM1900 Rx helgo input test points

Inductor L7805

Table 8: Tx PA input test points

Signal name: Ref:

Rfin_900/850 C7707

Ref:

Rfin_1800/190 L7702

Table 9: Tx filter/balun input test points

Signal name: Ref:

RfinP_900 L7700 RfinM_900 L7700

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RfinP_1800_1900 C7709 RfinM_1800_1900 C7710

Table 10: PA control signal test points

Signal name: Ref:

VPCTRL_900 R7715 VPCTRL_1800_1900 R7711 TXIM C7535 TXIP C7535 TXQM C7536 TXQP C7536 TXC R7522 TXP J7504 (test pad)

Table 11: Rx test points

Signal name: Ref:

VR1 C7551 VR2 C7520 VR3 C7583 VR4 C7510 VR5 C7553 VR6 C7506 VR7 R7500 VrefRF01 R7525 VBAT C7725 VTXB_900 C7713 VTXB_1800_1900 C7714

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■ RF implementation in RA-2/3

Frequency plan

The RF frequency plan is shown below. The VCO operates at the channel fre quency multiplied by two or four depending on the frequency band of operation. This means that the baseband modulated signals are directly converted up to the transmission frequency and the received RF signals directly down to the baseband frequency.

Figure 3: RF frequency plan

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RF block diagram

Antenna switch module (ASM)

Helgo

Figure 4: ASM

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DC characteristics

Regulators

The transceiver baseband section has a multi function analog ASIC, UEM, which contains among other functions six pieces of 2.78 V linear regulators and a 4.8 V switch ing regulator. All the regulators can be controlled individually by the 2.78 V logic directly or through a control register. Normally, direct control is needed because of switching speed requirement: the regulators are used to enable the RF-functions which means that the controls must be fast enough.

The use of the regulators can be seen in the power distribution diagram which is p resented in Figure 6, “Power distribution diagram,” on page 15.

The seven regulators are named VR1 to VR7. VrefRF01 is used as a reference voltage for Helgo.

The regulators (except for VR7) are connected to the Helgo. Different modes of operation can be selected inside the Helgo according to the control information coming through the RFBus.

DC supply currents

Figure 5: DC power supplies

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Typical current consumption

The table shows the typical current consumption in different operation modes.

Operation mode

Power OFF < 10 uA Leakage current (triple band

Rx, EGSM900/GSM850 75 mA, peak Rx, GSM1800/GSM1900 70 mA, peak Tx, power level 5, EGSM900/

GSM850 Tx, power level 0, GSM1800/

GSM1900

1700 mA, peak

1000 mA, peak

Current

consumption

Notes

PA)

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Power distribution diagram

Figure 6: Power distribution diagram

HELGO

LNA GSM1800/ 1900

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■ RF characteristics

Channel numbers and frequencies

System Channel number Tx frequency Rx frequency Unit

GSM850 128< =n <=251 F= 824.2+0.2* (n -

128)

GSM900 0 < =n <=124 F = 890 + 0.2 * n F = 935 + 0.2 * n MHz

975<= n <= 1023 F= 890+0.2* (n -1024) F= 935+0.2* (n -1024) MHz GSM1800 512 <= n <= 885 F=1710.2+0.2*(n-512) F=1805.2+0.2*(n-512) MHz GSM1900 512 <= n <=810 F=1850.2+0.2*(n-512) F=1930.2+0.2*(n-512) MHz

F= 869,2+0.2* (n -128) MHz

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RF Troubleshooting

All measurements should be done using a spectrum analyzer with a high-frequency high-impedance passive probe (LO-/reference frequencies and RF power levels) and an oscilloscope with a 10:1 probe (DC-voltages and low frequency signals).

The RF section is build around one RF ASIC (HELGO N7500). For easier troubleshootin g, this RF troubleshooting document is divided into sections.

Before changing HELGO, please check that both supply voltages and serial communication coming from baseband to HELGO are OK. Please note that the grounding of the PA module is directly below the PA module, so it is difficult to check or change.

Most RF semiconductors are static discharge sensitive! Therefore ESD protection must be taken care of during repair (ground straps and ESD soldering irons). HELGO and PA are moisture sensitive so parts must be pre-baked prior to soldering.

Apart from key components described in this document there are a lot of discrete components (resistors, inductors and capacitors) of which troubleshooting is done by checking if the sold ering of the component is done properly (for factory repairs checking if it is missing from the PWB). You can check capacitors for shortening and resistors for value by means of an ohmmeter, but be aware in-circuit measurements should be evaluated carefully.

Please be aware that all measured voltages or RF levels in this document are rough figures. Especially RF levels vary due to different measuring equipment or different grounding of the probe used. When using an RF probe use a pair of metallic tweezers to connect the probe ground to the PWB ground as close to the measurement point as possible.

■ Receiver description and troubleshooting

Each receiver path is a direct conversion linear receiver. From the antenna, the received RFsignal is fed to a front end module where a diplexer first divides the signal into two separate paths according to the band of operation: either lower, GSM850/EGSM900 or upper, GSM1800/GSM1900 path.

Most of the receiver circuitry is included in Helgo.

Rx front end

The front end features include:

• Antenna 50 ohm input

• RXs single outputs

• TXs single 50 ohm inputs

• 3 control lines from Helgo

Antenna

The RA-2/3 GSM850/EGSM900/GSM1800/GSM1900 transceiver features an internal antenna. There are two triple-band antennas: one for RA-2 and one for RA-3.

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Receiver characteristics

Item Values, GSM850/EGSM900/1800/1900

Type Direct conversion, Linear, FDMA/TDMA LO frequencies 3476...3576/3700...3840 MHz / 3610...3760

MHz/3860...3980 MHz Typical 3 dB bandwidth +/- 91 kHz Sensitivity min. - 102 dBm (normal condition) Total typical receiver voltage gain (from

antenna to Rx ADC) Receiver output level (RF level -95 dBm) 230 mVpp, single-ended I/Q signals to Rx

Typical AGC dynamic range 83 dB Accurate AGC control range 60 dB Typical AGC step in LNA 30 dB GSM1800/GSM1900

Usable input dynamic range -102... -10 dBm RSSI dynamic range -110... -48 dBm Compensated gain variation in receiving

band

86 dB

ADCs

25 dB GSM850/EGSM900

+/- 1.0 dB

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General instructions for Rx troubleshooting

To start Rx troubleshooting:

1. Connect test jig to a computer with a DAU-9S cable or to a FPS-8 flash prommer with an XCS-4 modular cable.

Make sure that you have PKD-1 dongle connected to the computer’s parallel port.

2. Connect a DC power supply to the module test jig with an FLC-2 cable.

3. Set the DC supply voltage to 3.6 V.

4. Connect an RF cable to the RF connector of the module test jig (MJ-19) and to RF signal generator.

5. Set the phone module to test jig and start Phoenix service software.

6. Initialize connection to the phone. (Use FBUS driver when using DAU-9S and COMBOX driver when using FPS-8).

7. From the File menu, choose “Choose Product”.

8. From the list, select RA2/RA-3.

9. From the toolbar, set operating mode to "Local".

10.From the Testing menu, choose “RF Controls”.

11.In the “RF Controls” window:

- Select band “GSM850", “GSM 900", "GSM 1800" or “GSM1900” (Default = "GSM900" RA-2, Default= “GSM850” RA-3)

- Set Active unit to "Rx" (Default = "Rx")

- Set Operation mode to "Burst" (Default = "Burst") For continuous mode:

- Set Operation mode to "Continuous"

- Set AGC to "12: FEG_ON + DTOS_ON + BB_30=Vgain60” (maximum gain setting used in normal mode) (Default = "14: FEG_ON + DTOS_ON + BB_42=Vgain72")

- Set Rx/Tx channel to 190 on GSM 850, 37 on GSM900 band, 700 on GSM1800 band or 661on GSM1900 (Defaults)

12.Apply 881,6671 MHz (channel 190 + 67,710 KHz offset),

942.46771 MHz (channel 37 + 67.710 kHz offset),

1842.86771 MHz (channel 700 + 67.710 kHz offset) or

1960.06771 MHz (channel 661 + 67.71 kHz) –90 dBm signal

to the RF connector (remember to compensate for cable attenuation). When measuring with an oscilloscope on "RXI" or "RXQ", you should se e the fol-

lowing screens on a working GSM900, GSM1800 or GSM1900 receiver:

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Figure 7: Rx I/Q signal, burst mode, input level –90dBm

• Receiver I or Q burst mode signal (channel 37) measured from test point RXI or RXQ with 942.46771 MHz signal, input level –90dBm at RF-connector.

Correct signal amplitudes approximately:

GSM850~170mVpp GSM900~170mVpp GSM1800~140mVpp GSM1900~160mVpp

Signal part frequency 67.7kHz sine. DC level of signal part is 1.35V. DC level can variate about +/-100mV between

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I and Q signals and between different bands as well.

GSM1900 receiver burst mode I or Q signal at ch 661 with input signal

1960.067MHz, level –90 dBm at RF-connector. Trace2: With wider time scaling both monitoring and own Rx bursts are seen,

st burst (shorter) is monitoring and 2nd burst (longer) is own Rx burst.

Trace1: External LNA VCC supply voltage at burst mod e, input leve l –90 dBm. Measured from test point LNA_VCC

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Figure 8: GSM1900 Rx I or Q signal (trace2), burst mode.

Detailed view of GSM900 continuous mode Rx I and Q signals measured from test points RXI and RXQ simultaneously.

Used channel 37, input signal 942.46771 MHz, level –90 dBm at antenna port, AGC settin g 12. Phase difference should be 90 degrees between Rx I and Q signals at all bands.

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Troubleshooting diagram for GSM850 receiver

Phone in “Continuous” mode, AGC setting “12”.

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Troubleshooting diagram for GSM900 receiver

Phone in “Continuous” mode, AGC setting “12”.

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T roubleshooting diagram for GSM1800 receiver

Phone in “Continuous” mode, AGC setting “12.

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T roubleshooting diagram for GSM1900 receiver

Phone in “Continuous” mode, AGC setting “12.

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■ Transmitter description and troubleshooting

The transmitter consists of:

• two final frequency IQ-modulators

• two power amplifiers, for the lower and upper bands separately

• power control loop.

The IQ-modulators are integrated in Helgo, as well as the operational amplifiers of the power control loop. The two power amplifiers are located in a single module with a power detector. In the GMSK mode, the power is controlled by adjusting the DC bias levels of the power amplifiers.

Power amplifier

The power amplifier features include:

• 50 ohm input and output, GSM850/EGSM900/GSM1800/GSM1900

• internal power detector

• EDGE mode

RF ASIC Helgo

The RF ASIC features include

Figure 9: Power amplifier

EGSM900/GSM850

EGSM out

GSM1800

DCS/

1900

PCS out

GSM1800

EGSM900

EGSM

GSM850

Power control

1900

DCS/PCS Power control

EGSM900

EGSM

GSM850

M1800

DCS/

1900

PCS in

Power detector

Mode

• Package

TFBGA88

• Balanced I/Q demodulator and balanced I/Q modulator

• Power control operational amplifier, acts as an error amplifier

• The signal from VCO is balanced, frequencies 3296 to 3980 MHz

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• GSM850/EGSM900 and GSM1800 low noise amplifier (LNA) are integrated.

The Helgo can be tested by test points only.

AFC function

AFC is used to lock the transceiver’s clock to the frequency of the base station.

Transmitter characteristics

Item Values (GSM850/EGSM900/1800/1900)

Type Direct conversion, nonlinear, FDMA/TDMA LO frequency range 3296...3396/3520...3660 MHz/3420...3570

MHz/3700...3820 MHz

Output power GMSK 33/33/30/30 dBm

8-PSK 27/27/26/26 dBm

Gain control range min. 30 dB

General instructions for Tx troubleshooting

Please refer to section Service Concepts in Chapter 3, Service Software Instructions. To start Tx troubleshooting:

1. Connect the test jig MJ-19 to a computer with a DAU-9S cable or to an FPS-8 flash prommer with an XCS-4 modular cable.

Make sure that you have a PKD-1 dongle connected to the computer’s parallel port.

2. Connect a DC power supply to the module test jig (MJ-19) with an FLC-2 cable.

Note: When repairing or tuning the transmitter use external DC supply with at least 3A current capability. Set the DC supply voltage to 3.9V and set the jumpe r connector on test jig to "bypass" position.

3. Connect an RF cable to the RF connector of the module test jig (MJ-19) and measurement equipment; or at least a 10dB attenuator, otherwise the PA may be damaged. Use a spectrum analyzer as measurement equipment.

Note: The maximum input power of a spectrum analyzer is +30dBm. It is recommended to use 10dB attenuator on the spectrum analyzer input to prevent any damage.

4. Set the phone module to test jig and start Phoenix service software.

5. Initialize connection to the phone. (Use FBUS driver when using DAU-9S and COMBOX driver when using FPS-8).

6. To choose a product in Phoenix: From the File menu, choose “Choose Product” and select RA-2/RA-3 from the list or from the File menu, choose “Scan Product”.

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7. From the toolbar, set operating mode to "Local".

8. From the Testing menu, choose “RF Controls”.

9. In the “RF Controls” window:

- Select band “GSM 850”, "GSM900" or "GSM 1800" or "GSM1900" (Default = "GSM900" RA-2, Default= “GSM850” RA-3).

- Set Active unit to "Tx" (Default = "Rx").

- Set Operation mode to "Burst" (Default = "Burst").

- Set Tx data type to "Random" (Default = "All1").

- Set Rx/Tx channel to 190 on GSM 850, 37 on GSM900 band or 700 on GSM1800 band or 661 on GSM1900 (Defaults).

- Set Tx PA mode to "Free" (Default).

- Set power level to 5 (Default = 19) on GSM 850 and GSM900 or to 0 (Default = 15) on GSM1800 or GSM1900.

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T ransmitter troubleshooting diagram

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HELGO IC troubleshooting diagram

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PA and antenna switch troubleshooting diagram

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Pictures of transmitter signals

VPCTRL 850/900 power level 5 at R7703/C7703 VPCRTL_1800/1900 power level 0 at R7704/C7704

VTXB 850/900 at C7713 VTXB_1800/1900 at C771

TXI/TXQ TX signals at R7516/R7515/C7535/C7536

TXC 850/900 power level 5 at R7522

VANT_1 at C7805 VANT_2 at C7804 VANT_3 at C7538

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Figure 10: Tx out signal, 900 band burst mode, channel 37

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■ Additional information for EDGE troubleshooting

Note! EDGE mode troubleshooting differs slightly from basic GSM troubleshooting.

To start EDGE troubleshooting:

1. Initialize a connection to the phone (see GSM850/900/1800/1900 troubleshooting instructions).

2. To select a product in Phoenix: From the File menu, choose “Choose Product “and select RA-2/RA-3 from the list or from the File menu, choose “Scan Product”.

3. From the toolbar, set operating mode to “Local”

4. From the Testing menu, choose “RF Controls”.

5. In the “RF Controls” window:

- Select Band “GSM850”, “GSM900” or “GSM1800” or “GSM1900” (Default = "GSM900" RH-30, Default= “GSM850” RH-31).

- Set Active unit to “Tx” (Default=”Rx”).

- Set Edge “On” (Default=”Off”).

- Set Operation mode to “Burst” (Default=”Burst”).

- Set Tx data type to “Alternate PN9” (Default=”All1”).

- Set Rx/Tx channel to 190 on GSM850, 37 on GSM900 or 700 on GSM1800 or 661 on GSM1900 (Defaults).

- Set power level to 8 (Default = 19) on GSM850 and GSM900 or to 2 (Default =

0) on GSM1800 or GSM1900.

Note! For GSM850/900 Edge power levels 5, 6 and 7 are not in use and for GSM1800&1900 Edge power levels 0 and 1 are not in use.

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T ransmitter EDGE troubleshooting diagram

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HELGO EDGE troubleshooting diagram

Check with oscilloscope:

-TXI/TXQ signals

-VR1, VR2, VR4, VR5, VR6 =2.8V

-VrefRF01 = 1.35V

-Helgo serial interface

-TXP & TXC & TXA OK?

Yes

Check with RF probe: 4G VCO signal output:

-3346.4MHz(GSM850)

-3589.6MHz (GSM900)

-3589.6MHz(GSM900)

-3495.6MHz (GSM1800)

-3495.6MHz(GSM1800)

-3760MHz (GSM1900)

-3760MHz(GSM1900)

Level > - 10dBm

OK?

Yes

Check modulator output components

Helgo EDGE troubleshooting

OK?

Replace faulty component(s)

Baseband troubleshooting

Synthesizer troubleshooting

Replace HELGO

Issue 1 09/04 COMPANY CONFIDENTIAL 37

RA-2/3

Nokia Customer Care 7 - RF Description and Troubleshooting

PA and antenna switch EDGE troubleshooting diagram

38 COMPANY CONFIDENTIAL Issue 1 09/04

RA-2/3 7 - RF Description and Troubleshooting Nokia Customer Care

Pictures of EDGE transmitter signals

Figure 11: I_ref_1800/1900 power level 2 at R7700/C7700

Figure 12: VTXB 1800/1900 power level 2 at C7714

Issue 1 09/04 COMPANY CONFIDENTIAL 39

RA-2/3

Nokia Customer Care 7 - RF Description and Troubleshooting

Figure 13: TXI/TXQ signal at C7535/C7536/R7516/R7517

Figure 14: TXA 850/900/1800/1900 at C7538

40 COMPANY CONFIDENTIAL Issue 1 09/04

RA-2/3 7 - RF Description and Troubleshooting Nokia Customer Care

Figure 15: VTXB 850/900 power level 8 at C7713

Figure 16: I_ref 850/900 power level 8 at R7701/C7701

Issue 1 09/04 COMPANY CONFIDENTIAL 41

RA-2/3

Nokia Customer Care 7 - RF Description and Troubleshooting

Figure 17: TXC 850/900 power level 8 at 7522

42 COMPANY CONFIDENTIAL Issue 1 09/04

RA-2/3 7 - RF Description and Troubleshooting Nokia Customer Care

■ Synthesizer description and troubleshooting

Frequency synthesizers

The VCO frequency is locked by a PLL (phase locked loop) in to a stable frequency so urce given by a VCTCXO which is running at 26 MHz. The frequency of the VCTCXO is in turn locked into the frequency of the base station with the help of an AFC voltage which is generated in UEM by an 11 bit D/A converter. The PLL is located in Helgo and it is controlled through the RFBus.

The required frequency dividers for modulator and demodulator mixers are integrated in Helgo. Loop filter filters out the comparison pulses of the phase detector and generates a DC control

voltage to the VCO. The loop filter determines the step response of the PLL (settling time) and contributes to the stability of the loop.

The frequency synthesizer is integrated in Helgo except for the VCTCXO, VCO, and the loop filter.

General instructions for synthesizer troubleshooting

To start synthesizer troubleshooting:

1. Connect the test jig (MJ-19) to a computer with a DAU-9S cable or to an FPS-8 flash prommer with an XCS-4 modular cable.

Make sure that you have a PKD-1 dongle connected to the computer’s parallel port.

2. Connect a DC power supply or FPS-8 to the module test jig with a PCS-1 cable.

3. Set the DC supply voltage to 3.6V and set the jumper connector on test jig to "bypass" position.

4. Set the phone module to test jig and start Phoenix service software

5. Initialize connection to the phone. (Use FBUS driver when using DAU-9S and COMBOX driver when using FPS-8).

6. From the File menu, choose “Choose Product”.

7. From the list, select RA-2/RA-3.

8. From the toolbar, set operating mode to "Local"

9. From the Testing menu, choose “RF Controls”.

10.In the “RF Controls” window:

- Select band "GSM850", "GSM900", "GSM 1800" or "GSM1900" (Default = "GSM900" RA-2, Default= “GSM850” RA-3).

- Set Active unit to "Rx" (Default = "Rx").

- Set Operation mode to "Continuous" (Default = "Burst").

- Set Rx/Tx channel to 190 on GSM850, 37 on GSM900 band, 700 on GSM1800 band, 661 on GSM1900 band (Defaults).

Issue 1 09/04 COMPANY CONFIDENTIAL 43

RA-2/3

Nokia Customer Care 7 - RF Description and Troubleshooting

Troubleshooting diagram for synthesizer

Setup with Phoenix:

ctive Unit: Rx Mode: Continuous Channel: 190 (GSM850) 37 (GSM900) 700 (GSM1800) 661 (GSM1900)

Troubleshooting diagram for synthesizer

Spectrum analyzer

Check with RF probe VCO (G7500) out signal:

-3526.4MHz(GSM850)

-3769.6MHz(GSM900)

-3685.6MHz(GSM1800)

-3920MHz(GSM1900) Level > -10dBm * OK?

Yes

PLL Block is functional

Oscilloscope

VCTCXO Suppl

VR3=2.78V

Yes

Oscilloscope

VCTCXO output at G7501 26MHz,app.0.8Vpp

Oscilloscope

VCO suppl

VR7 = 2.78V, VR5=2.78V, VR1=4.7V

Spectrum analyzer

VCO (G7500) out Some signal 3-4.4 GHz

Yes

Check supply filter components : C2232, C7590. Check UEM and SW.

G7501 defective or short Circuit to GND

Check supply fil te r co mponents: R7500, C7501, C7560, C2230, C7551,

C7552, C7553 Check UEM and Software.

Check VCO G7500, Balun T7500

Yes

Check loop filter components: C7503, C7504, C7505, R7501, R7502

Wrong writing on RFBus (see BB part) If ok change RF ASIC N7500

* When 1 kOhm passive probe is used, Correct the measurement by +26dB

44 COMPANY CONFIDENTIAL Issue 1 09/04

RA-2/3 7 - RF Description and Troubleshooting Nokia Customer Care

Pictures of synthesizer signals

Figure 18: 26MHz at G501 pin out

Figure 19: 26MHz RFCLK at R420/C420

Issue 1 09/04 COMPANY CONFIDENTIAL 45

RA-2/3

Nokia Customer Care 7 - RF Description and Troubleshooting

Figure 20: 1800 Tx, channel 512, burst mode

Figure 21: 1900 Rx, channel 810, continuous mode

46 COMPANY CONFIDENTIAL Issue 1 09/04

RA-2/3

7 - RF Description and Troubleshooting Nokia Customer Care

Figure 22: VCO output, 1800 band, ch700, Rx on, continuous output

-12

-20

-30

-40

-50

-60

-70

Ref Lvl

-12 dBm

1VIE

Marker 1 [T1]

-15.59 dBm

3.68560301 GHz

RBW 10 kHz

VBW 10 kHzRef Lvl

SWT 25 ms

RF Att 10 dB

Unit dB

1MA

-80

-90

-100

-112

Date: 29.APR.2003 13:41:26

100 kHz/Center 3.6856 GHz Span 1 MHz

Issue 1 09/04 COMPANY CONFIDENTIAL 47

RA-2/3

Nokia Customer Care 7 - RF Description and Troubleshooting

Frequency Lists

GSM850

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

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 3478.4 192 837.0 882.0 3348.0 3528.0 131 824.8 869.8 3299.2 3479.2 193 837.2 882.2 3348.8 3528.8 132 825.0 870.0 3300.0 3480.0 194 837.4 882.4 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 3482.4 197 838.0 883.0 3352.0 3532.0 136 825.8 870.8 3303.2 3483.2 198 838.2 883.2 3352.8 3532.8 137 826.0 871.0 3304.0 3484.0 199 838.4 883.4 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 3486.4 202 839.0 884.0 3356.0 3536.0 141 826.8 871.8 3307.2 3487.2 203 839.2 884.2 3356.8 3536.8 142 827.0 872.0 3308.0 3488.0 204 839.4 884.4 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 3490.4 207 840.0 885.0 3360.0 3540.0 146 827.8 872.8 3311.2 3491.2 208 840.2 885.2 3360.8 3540.8 147 828.0 873.0 3312.0 3492.0 209 840.4 885.4 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 3494.4 212 841.0 886.0 3364.0 3544.0 151 828.8 873.8 3315.2 3495.2 213 841.2 886.2 3364.8 3544.8 152 829.0 874.0 3316.0 3496.0 214 841.4 886.4 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 3498.4 217 842.0 887.0 3368.0 3548.0 156 829.8 874.8 3319.2 3499.2 218 842.2 887.2 3368.8 3548.8 157 830.0 875.0 3320.0 3500.0 219 842.4 887.4 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 3502.4 222 843.0 888.0 3372.0 3552.0 161 830.8 875.8 3323.2 3503.2 223 843.2 888.2 3372.8 3552.8 162 831.0 876.0 3324.0 3504.0 224 843.4 888.4 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 3506.4 227 844.0 889.0 3376.0 3556.0 166 831.8 876.8 3327.2 3507.2 228 844.2 889.2 3376.8 3556.8 167 832.0 877.0 3328.0 3508.0 229 844.4 889.4 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 3510.4 232 845.0 890.0 3380.0 3560.0 171 832.8 877.8 3331.2 3511.2 233 845.2 890.2 3380.8 3560.8 172 833.0 878.0 3332.0 3512.0 234 845.4 890.4 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 3514.4 237 846.0 891.0 3384.0 3564.0 176 833.8 878.8 3335.2 3515.2 238 846.2 891.2 3384.8 3564.8 177 834.0 879.0 3336.0 3516.0 239 846.4 891.4 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 3518.4 242 847.0 892.0 3388.0 3568.0 181 834.8 879.8 3339.2 3519.2 243 847.2 892.2 3388.8 3568.8 182 835.0 880.0 3340.0 3520.0 244 847.4 892.4 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 3522.4 247 848.0 893.0 3392.0 3572.0 186 835.8 880.8 3343.2 3523.2 248 848.2 893.2 3392.8 3572.8 187 836.0 881.0 3344.0 3524.0 249 848.4 893.4 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

48 COMPANY CONFIDENTIAL Issue 1 09/04

RA-2/3 7 - RF Description and Troubleshooting Nokia Customer Care

GSM900 (including 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 11 2 91 2.4 957.4 364 9.6 382 9.6

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

Issue 1 09/04 COMPANY CONFIDENTIAL 49

RA-2/3

Frequency list GSM1800

Nokia Customer Care 7 - RF Description and Troubleshooting

GSM1800

CH TX RX VCO TX VC O RX CH TX RX VCO TX V CO RX CH TX RX VCO TX VC O RX CH TX RX VCO TX VCO RX

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

1734.2 1829.2 3468.4 3658.4

633

1734.4 1829.4 3468.8 3658.8

634

1734.6 1829.6 3469.2 3659.2

635

1734.8 1829.8 3469.6 3659.6

636

1735.0 1830.0 3470.0 3660.0

637

1735.2 1830.2 3470.4 3660.4

638

1735.4 1830.4 3470.8 3660.8

639

1735.6 1830.6 3471.2 3661.2

640

1735.8 1830.8 3471.6 3661.6

641

1736.0 1831.0 3472.0 3662.0

642

1736.2 1831.2 3472.4 3662.4

643

1736.4 1831.4 3472.8 3662.8

644

1736.6 1831.6 3473.2 3663.2

645

1736.8 1831.8 3473.6 3663.6

646

1737.0 1832.0 3474.0 3664.0

647

1737.2 1832.2 3474.4 3664.4

648

1737.4 1832.4 3474.8 3664.8

649

1737.6 1832.6 3475.2 3665.2

650

1737.8 1832.8 3475.6 3665.6

651

1738.0 1833.0 3476.0 3666.0

652

1738.2 1833.2 3476.4 3666.4

653

1738.4 1833.4 3476.8 3666.8

654

1738.6 1833.6 3477.2 3667.2

655

1738.8 1833.8 3477.6 3667.6

656

1739.0 1834.0 3478.0 3668.0

657

1739.2 1834.2 3478.4 3668.4

658

1739.4 1834.4 3478.8 3668.8

659

1739.6 1834.6 3479.2 3669.2

660

1739.8 1834.8 3479.6 3669.6

661

1740.0 1835.0 3480.0 3670.0

662

1740.2 1835.2 3480.4 3670.4

663

1740.4 1835.4 3480.8 3670.8

664

1740.6 1835.6 3481.2 3671.2

700

1747.8 1842.8 3495.6 3685.6

701

1748.0 1843.0 3496.0 3686.0

702

1748.2 1843.2 3496.4 3686.4

703

1748.4 1843.4 3496.8 3686.8

704

1748.6 1843.6 3497.2 3687.2

705

1748.8 1843.8 3497.6 3687.6

706

1749.0 1844.0 3498.0 3688.0

707

1749.2 1844.2 3498.4 3688.4

708

1749.4 1844.4 3498.8 3688.8

709

1749.6 1844.6 3499.2 3689.2

710

1749.8 1844.8 3499.6 3689.6

711

1750.0 1845.0 3500.0 3690.0

712

1750.2 1845.2 3500.4 3690.4

713

1750.4 1845.4 3500.8 3690.8

714

1750.6 1845.6 3501.2 3691.2

715

1750.8 1845.8 3501.6 3691.6

716

1751.0 1846.0 3502.0 3692.0

717

1751.2 1846.2 3502.4 3692.4

718

1751.4 1846.4 3502.8 3692.8

719

1751.6 1846.6 3503.2 3693.2

720

1751.8 1846.8 3503.6 3693.6

721

1752.0 1847.0 3504.0 3694.0

722

1752.2 1847.2 3504.4 3694.4

723

1752.4 1847.4 3504.8 3694.8

724

1752.6 1847.6 3505.2 3695.2

725

1752.8 1847.8 3505.6 3695.6

726

1753.0 1848.0 3506.0 3696.0

727

1753.2 1848.2 3506.4 3696.4

728

1753.4 1848.4 3506.8 3696.8

729

1753.6 1848.6 3507.2 3697.2

730

1753.8 1848.8 3507.6 3697.6

731

1754.0 1849.0 3508.0 3698.0

732

1754.2 1849.2 3508.4 3698.4

733

1754.4 1849.4 3508.8 3698.8

734

1754.6 1849.6 3509.2 3699.2

735

1754.8 1849.8 3509.6 3699.6

736

1755.0 1850.0 3510.0 3700.0

737

1755.2 1850.2 3510.4 3700.4

738

1755.4 1850.4 3510.8 3700.8

739

1755.6 1850.6 3511.2 3701.2

740

1755.8 1850.8 3511.6 3701.6

741

1756.0 1851.0 3512.0 3702.0

742

1756.2 1851.2 3512.4 3702.4

743

1756.4 1851.4 3512.8 3702.8

744

1756.6 1851.6 3513.2 3703.2

745

1756.8 1851.8 3513.6 3703.6

746

1757.0 1852.0 3514.0 3704.0

747

1757.2 1852.2 3514.4 3704.4

748

1757.4 1852.4 3514.8 3704.8

749

1757.6 1852.6 3515.2 3705.2

750

1757.8 1852.8 3515.6 3705.6

751

1758.0 1853.0 3516.0 3706.0

752

1758.2 1853.2 3516.4 3706.4

753

1758.4 1853.4 3516.8 3706.8

754

1758.6 1853.6 3517.2 3707.2

755

1758.8 1853.8 3517.6 3707.6

756

1759.0 1854.0 3518.0 3708.0

757

1759.2 1854.2 3518.4 3708.4

758

1759.4 1854.4 3518.8 3708.8

794

1766.6 1861.6 3533.2 3723.2

795

1766.8 1861.8 3533.6 3723.6

796

1767.0 1862.0 3534.0 3724.0

797

1767.2 1862.2 3534.4 3724.4

798

1767.4 1862.4 3534.8 3724.8

799

1767.6 1862.6 3535.2 3725.2

800

1767.8 1862.8 3535.6 3725.6

801

1768.0 1863.0 3536.0 3726.0

802

1768.2 1863.2 3536.4 3726.4

803

1768.4 1863.4 3536.8 3726.8

804

1768.6 1863.6 3537.2 3727.2

805

1768.8 1863.8 3537.6 3727.6

806

1769.0 1864.0 3538.0 3728.0

807

1769.2 1864.2 3538.4 3728.4

808

1769.4 1864.4 3538.8 3728.8

809

1769.6 1864.6 3539.2 3729.2

810

1769.8 1864.8 3539.6 3729.6

811

1770.0 1865.0 3540.0 3730.0

812

1770.2 1865.2 3540.4 3730.4

813

1770.4 1865.4 3540.8 3730.8

814

1770.6 1865.6 3541.2 3731.2

815

1770.8 1865.8 3541.6 3731.6

816

1771.0 1866.0 3542.0 3732.0

817

1771.2 1866.2 3542.4 3732.4

818

1771.4 1866.4 3542.8 3732.8

819

1771.6 1866.6 3543.2 3733.2

820

1771.8 1866.8 3543.6 3733.6

821

1772.0 1867.0 3544.0 3734.0

822

1772.2 1867.2 3544.4 3734.4

823

1772.4 1867.4 3544.8 3734.8

824

1772.6 1867.6 3545.2 3735.2

825

1772.8 1867.8 3545.6 3735.6

826

1773.0 1868.0 3546.0 3736.0

827

1773.2 1868.2 3546.4 3736.4

828

1773.4 1868.4 3546.8 3736.8

829

1773.6 1868.6 3547.2 3737.2

830

1773.8 1868.8 3547.6 3737.6

831

1774.0 1869.0 3548.0 3738.0

832

1774.2 1869.2 3548.4 3738.4

833

1774.4 1869.4 3548.8 3738.8

834

1774.6 1869.6 3549.2 3739.2

835

1774.8 1869.8 3549.6 3739.6

836

1775.0 1870.0 3550.0 3740.0

837

1775.2 1870.2 3550.4 3740.4

838

1775.4 1870.4 3550.8 3740.8

839

1775.6 1870.6 3551.2 3741.2

840

1775.8 1870.8 3551.6 3741.6

841

1776.0 1871.0 3552.0 3742.0

842

1776.2 1871.2 3552.4 3742.4

843

1776.4 1871.4 3552.8 3742.8

844

1776.6 1871.6 3553.2 3743.2

845

1776.8 1871.8 3553.6 3743.6

846

1777.0 1872.0 3554.0 3744.0

847

1777.2 1872.2 3554.4 3744.4

848

1777.4 1872.4 3554.8 3744.8

849

1777.6 1872.6 3555.2 3745.2

850

1777.8 1872.8 3555.6 3745.6

851

1778.0 1873.0 3556.0 3746.0

852

1778.2 1873.2 3556.4 3746.4

50 COMPANY CONFIDENTIAL Issue 1 09/04

RA-2/3

Frequency list NPL 2 GSM1900

7 - RF Description and Troubleshooting Nokia Customer Care

GSM1900

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

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

Issue 1 09/04 COMPANY CONFIDENTIAL 51

RA-2/3

Nokia Customer Care 7 - RF Description and Troubleshooting

■ RF 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 general Rx repairs, the front-end always requires "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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RA-2/3 7 - RF Description and Troubleshooting Nokia Customer Care

WLAN RF Description

WLAN RF has functionality required for IEEE802.11b 2.4 GHz high-rate WLAN. The radio is half-duplex with no frequency duplex. Transmission and receiving is on the same frequency.

Transmission times are determined by running a distributed medium access control protocol leaning on clear channel assessment and back-off procedures. The protocol is known as CSMA/CA, Carrier Sense Multiple Access / Collision Avoidance.

EMC leakage is prevented by using a metal can. Heat generated by the circuitry is conducted out via the PWB ground planes and a metallized shield.

Table 12: General transceiver characteristics

Parameter Value

Frequency range 2412 – 2462 MHz (US bands)

2412 – 2472 MHz (EU bands) Channel spacing 5 MHz Number of channels 11 channels in US

13 channels in EU

13 channels in France Frequency accuracy ± 25 ppm Modulation 11 Msymbols/s BPSK/QPSK Data rates 1 Mb/s BPSK Barker spreading

2 Mb/s QPSK Barker spreading

5.5 Mb/s and 11 Mb/s QPSK and CCK coding

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■ RF operating modes

The MAX2821 has four primary modes of operation: shutdown, standby, receive active and transmit active. The modes are controlled with RF_ENA, TX_ENA and RX_ENA signals.

Table 13: RF operating modes

Mode /SHDN Tx Rx Note

Shutdown 0 X X Stand-by 1 0 0 PLL on Receive 1 0 1 Transmit 1 1 0

Transmitter

The RF block diagram is shown in the figure below:

RF-conn.

Figure 23: WLAN RF block diagram.

MAX2821

RF5117

rx level det. RX_DET

PLL

RX_ENA

RX I

RX Q

RX_GC ATT_SW

22MHz

SERIAL BUS

TX I

TX Q

TX_GC

PA_ENA

TX_DET

RF_ENA

The transmitter section of MAX2821 contains integrated baseband filter, IQ-modulator and a driver amplifier with a variable output power. Balanced output of MAX2821 is converted to single-ended with ceramic balun. The PA RF5117 amplifies the signal to the desired output level. Decreasing or increasing of the transmit power is by applying the output signal from DAC (TX_GC) to the driver amplifier VGA. This way the Tx output power level is constant regardless of process or temperature variations. The accuracy of the detector is ±1 dB. TX_GC setting is updated to DAC output only at the start of the transmission. The signal goes after the PA to the Bluetooth selection switch and from there to Tx/Rx switch and the RF band pass filter. The RF filter attenuates the transmitter wideband noise to a level where it does not interfere GSM re-

54 COMPANY CONFIDENTIAL Issue 1 09/04

RA-2/3 7 - RF Description and Troubleshooting Nokia Customer Care

ceiver. The transmitter harmonics are attenuated at the RF filter to a required level. The Tx/Rx switch, BT/WLAN switch, RF filter, RF test connector and antenna are common to BT and WLAN in RA-2/3.

Table 14: Transmitter characteristics

Parameter Value

Typical output power (mean power) 17.5 dBm (conducted), Maximum output

power 100 mW (EIRP) Min output power (mean power) 3 dBm Output spectrum ACPR1 _ -33 dBc, ACPR2 _ -53 dBc Modulation accuracy <35% Carrier Suppression >15 dBc

Receiver

The receiver is a direct conversion receiver based on a single chip RFIC. The received input signal is filtered with a ceramic band pass filter after which the Tx/Rx switch selects the receiver branch..

Table 15: Receiver characteristics

Parameter Value

Typical 3 dB bandwidth 7.5 MHz (I and Q channels) Sensitivity, 2Mbps (1024 byte frame) -90 dBm Sensitivity, 11Mbps (1024 byte frame) -85 dBm Max. Rx voltage gain (from antenna to Rx ADC) 102 dB Typical receiver output level 500 mVp-p Typical AGC dynamic range 100 dB Usable input dynamic range -10 dBm…-92 dBm RF gain step 30 dB, typical

Synthesizer

The PLL synthesizer with VCO is integrated into RFIC, only the loop filter is needed outside the RFIC.

Antenna

Antenna is located in the corner of the engine PWB. Antenna interface is single ended 50 W.

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56 COMPANY CONFIDENTIAL Issue 1 09/04

Nokia 9500 Service Manual 07 ra2 RF.book

Specifications and Main Features

Frequently Asked Questions

User Manual

CMT RF

■ Top-level description

■ RA-2 test point locations

■ Test points

■ RF implementation in RA-2/3

Frequency plan

RF block diagram

Antenna switch module (ASM)

DC characteristics

■ RF characteristics

Channel numbers and frequencies

RF Troubleshooting

■ Receiver description and troubleshooting

Rx front end

Antenna

Receiver characteristics

General instructions for Rx troubleshooting

■ Transmitter description and troubleshooting

Power amplifier

RF ASIC Helgo

AFC function

Transmitter characteristics

General instructions for Tx troubleshooting

■ Additional information for EDGE troubleshooting

Pictures of EDGE transmitter signals

■ Synthesizer description and troubleshooting

Frequency synthesizers

General instructions for synthesizer troubleshooting

Frequency Lists

■ RF tunings after repairs

WLAN RF Description

■ RF operating modes

Transmitter

Receiver

Synthesizer

Antenna