Motorola TALKABOUT T2688 Скачать руководство пользователя страница 76

Страница: 76 / 77

{Doc}

{RevCode}

D65 RF

Wednesday, November 01, 2000

Title

Size

Document Number

Rev

Date:

Sheet

BASEBAND

TSPEN4

APC

TSPDO

AFC

TSPCLK

NTSPEN1

BULIP

BULIN

TSPACT10

TSPACT7

BULQP

TSPACT6

BULQN

TSPACT5

BDLIP

TSPACT11

BDLIN

TSPACT4

BDLQP

BDLQN

13MHz

VTCXO

VBAT

MOX

MO
MOX

-5dB

SYNPRG

AFCDAC

VSYNEN

RAMPDA

IRXN

VTCXO

QTXP

13MHz

QRXP

QRXN

AGCA
SYNCLK

SYNPRG

SYNENA

RXON
CALBRA

IRXN

IRXP

CLOCK

QTXP

QRXN

QRXP

CLOCK

AGCPRG

ITXN

ITXP

ITXN

QTXN

IRXP

DATA

SYNDAT

DATA

VBAT

BANDSW

TXPA

R413
4k7

C405

100p

R415

22k

R402
33R

C424

0.1u

U402

ENE3010A

Control

GND

OUT

VCC

R406

180R

C422
15n

1206C

C420
1n2

0402C

C401

15p

R411
10K

C418
15p

R401

180R

C406

15p

C417

33p

C416

0603C

R410

22R

R408

680R

R409

1k5

C413

56p

C414

3n3

0402C

C415

C426
10p

R416
1M

C425

ANT1
ANTENNA

L504

2n2

0402L

L505

6n8

0402L

C502

47p

L501

33p

0603C

C301

10u

0805C

C304

10u

0805C

C602

C604

1p2

C606

10p

L608

12n

C613

12p

C605

15p

C623

15p

R611

3k3

D601

BBY57-02W

C622

100p

C652

0p5

C649

10p

C428
33p

C624
33p

IC402

TC7SHU04FU

IC501

TC7SHU04FU

L605

10n

L614

100n

0603

U401

ENFVZ4E76A

C633

150nH

0603L

L613

68n

0603L

C634

150nH

0603L

C617

10p

C636

1.8nH

C635

1.8nH

C631

10p

L606

8n2

C409

R618
100

C621

100p

C632

33p

R607

C637

100p

L616

120n

0603

R627

47R

L611

4n7

R407
1k

L610

5n6

R617

470

R605

470R

R612

10k

C653

2p7

L604

2n7

C612

2p2

C302

10u

0805C

R610

10k

C303

10u

0805C

IC301

MAS9128A

OUTA

OUTC

ENBC

ENA

VREF

GND

VCC

OUTB

U113
CONNECTOR

L502

n.m.

0603L

C628

0.1u

C650
33p

C610

100p

C619

1p2

Q603

TP0101T

C645

560p

0402C

C616

L615

68n

0603L

C614

C625
10p

C620

C609

C603

0.1u

R609

470R

R626

56R

C638

680p

R608

n.m.

L607

8n2

C608

0.1u

R625

n.m.

R623

n.m.

IC401

MB15F03SL

GNDrf

CLK

DATA

Finrf

VCCrf

Xfinrf

PSrf

Dorf

Doif

PSif

LD/Fout

Vccif

finif

GNDif

OSCin

C640

33p

U604

TFS225

2
1

7
8
9

C305

10n

C412

47n

1206C

R503

U601

EFCH9418MTY6

GSM

DCS

GSM

C626

0.1u

Q601

BFP420

U605

LFDP20N0020A

DCS

GSM

R621

10dB_PAD

C607

100p

U502

74LCX00MTC

GND

VCC

U606

ENFVZ4G00

OUT

VCC

C601

R622

10dB_PAD

C641

10p

L503

5n6

0603L

R614

47k

C660

15p

C647

10n

0805C

U602

EFCH9418MTY6

GSM

DCS

GSM

C615
4p7

Q602

BFP520

C646

0.1u

C427
15p

0402C

U603

HD155121F

MIXINB1

MIXIN1

RFOUT

RFIN1

RFIN2

VCCPLL

GNDPLL

VCOIN2

VCOIN1

VCCCOMP

PLLOUT

ICURAD

QINB

QIN

IINB

IIN

MODLB

VCCIQ

GNDIQ

QOUTB

QOUT

IOUTB

IOUT

MIX2OB

IFLO

BAND

IFVCOO

IFVCOI

VCCIF

GNDIF

IFIN

IFINB

SDATA

CLK

MIX2O

MIXIN2

MIXINB2

POONTX

POONRX2

POONRX1

MIX1OUTB

MIX1OUT

VCCMIX1

GNDMIX1

RFLOIN

VCCDIV

GNDDIV

C627

U501
LMC36-07A0505A

TXGSM

VC1

GND

VC2

RXGSM

GND

RXDCS

VC3

ANT

VC4

TXDCS

GND

L609

2n7

Q201

BC847PN

R209

10k

R208

47k

R206

39k

C211

15p

R216
0R

R215

9k1 1%

C205
33p

0402C

C203

12p

0402C

C202
10p

C204
33p

R203
0.033R

0805

R212

240k

R211

150k

R219

27R

L203

3n9

LQW1608 0603L

C215

10nF

R213

270k

L201

5n6

LQW1608 0603L

R214

100k

C210

470u/10V/0.1R

C201
68p

C206
10p

R297

39k

0402C

R299

10k

0402C

U202

AD8031

U201

RM009

DCSIN

GSMIN

DCSOUT

GSMOUT

VCC

APC

R217

1k8

R207

11.8k 1%

L202

n.m.

0402L

C207
33p

Q202

BC847PN

C209
33p

C208
10p

C216

0402C

R298

47k

0402C

C214
15p

VTCXO

SYNPRG[0..2]

LO1

LO2

13MHz

IF_TUNE

AFC

SYN2V8

GSMPA

DCS_RX

GSM_RX

DCSPA

PA_ON

VBAT

TX2V8

RF_ON

GSM_RX

DCS_RX

IF_TUNE

RF2V8

RX_I/Q[0..3]

AGCPRG[0..2]

TX2V8

TXVCO_OFF

TX_GSM

TX_DCS

RF2V8

SYN2V8

LO1

TXON

SYN2V8

RXON2

RF2V8

RXON1

SYN2V8

RF2V8

LO2

TX_I/Q[0..3]

TXDCS

TXGSM

VBAT

TXON

VBAT

DCSPA

RAMP

TXVCO_OFF

GSMPA

PAON

VBAT

Revisions

GSM Service Support Group

5 Jan 01

L3 RF Schematic

Rev 1.0

Topaz

Ray Collins / Michael Hansen / Ralf Lorenzen-Schiel

Содержание TALKABOUT T2688

Страница 1: ...T200 T2688 Level 1 2 Service Manual Rev 1 2 ...

Страница 2: ... SECTION 3 FEATURE LIST 3 1 List of Features available 9 3 2 Menu 9 3 3 Phone Book 9 3 4 Messages 10 3 5 Call Services 11 3 6 Phone Settings 12 3 7 Networks 12 3 8 Security 13 3 9 Audio Settings 13 3 10 Tools 14 SECTION 4 DISASSEMBLY PARTS 4 1 Dissasembly Introduction 16 4 2 Recommended Tools 16 4 3 Disassembly Procedure 16 4 4 Assembly procedure 16 4 5 Exploded Parts diagram 19 4 6 Part Numbers 2...

Страница 3: ...uction 26 6 2 Mechanical repairs 26 6 3 Basic modular troubleshooting 26 6 4 Software Upgrade 28 6 5 Flexing 28 6 6 Testing on DM Tools 29 SECTION 7 ACCESSORIES 7 1 Accessory Introduction 35 SECTION 8 SALES MODELS 8 1 Sales Models Numbers 37 SECTION 9 GLOSSARY OF TERMS 9 1 List of Abbreviations 41 ...

Страница 4: ...of 51 GSM Field Service Support iv T200 T2688 SECTION 1 GENERAL ...

Страница 5: ...Flexing of product Initiate warranty claims and send faulty modules to Level 3 or 4 repair centres Computer Software Copyrights The Motorola products described in this instruction manual may include copyrighted Motorola computer programs stored in semi conductor memories or other media Laws in the United States and other countries preserve for Motorola certain exclusive rights for copyrighted comp...

Страница 6: ...d against epidemic criteria Manufacturing to bear the costs of early life failure 1 2 3 Product Support Customers original units will be repaired but not refurbished as standard Appointed Motorola Service Hubs will perform warranty and non warranty field service for level 2 assemblies and level 3 limited PCB component The Motorola HTC centres will perform level 4 full component repairs 1 2 4 Custo...

Страница 7: ...y grounded according to installation instructions for safe operation Users are advised to turn off their equipment when at a refueling point Safety is every driver s responsibility Cellular telephones should only be used in situations in which the driver considers it safe to do so 1 3 3 General DO NOT allow children to play with any radio equipment containing a transmitter DO NOT operate this equi...

Страница 8: ...of 51 GSM Field Service Support 1 T200 T2688 SECTION 2 T200 DESCRIPTION ...

Страница 9: ...by Current Typically 7 0 ma DRX2 Dimensions 112mm x 46mm x 18 5mm Size Volume 78cc Weight 90g with Battery Temperature Range 20C to 55C Transmitter Function Specification RF Power Output 33 dBm 2dB GSM 30 dBm 2 dB DCS Output Impedance 50 ohms nominal Spurious Emissions 36 dBm from 0 1 to 1 Ghz 30 dBm from 1 to 4 Ghz Receiver Function Specification RF Level 120 dBm GSM 100 dBm DCS RX bit error rate...

Страница 10: ...included with the unit New slim and light form factor SMS arriving indication SMS overflow indication Voice Mail arriving indication SMS Cell Broadcast CLI presentation Date and time stamp for last 10 calls USSD MO and Network Originated ALS Calendar Vibrator Phone book holds 100 entries in memory and another 120 in the SIM Card New animatated graphics Calender Calculator functions VibracallTM WAP...

Страница 11: ...n to resume after the call Calling Name Presentation This is an improvement on the existing name presentation At present name from phone book is displayed by comparing last 8 digits of Number New feature will show name as sent by the network This is up to 80 characters but will be shortened to 12 for the phonebook This functionality must be subscribed to with network Caller can restrict this On ca...

Страница 12: ... T2688 Fig 2 1 Mechanical pictorial Overview Menu access key Microphone Socket Volume Keys Antenna Lens w Talkabout logo Speaker Ports Battery Contacts SIM Contacts SIM Retaining slide Accessory and Charger Port Screw Locations Lanyard Loop ...

Страница 13: ...e approximate and will vary depending on network configuration band and status and the functions selected Times are quoted as a range from DRX 2 to DRX 9 Support of DTX mode is dependent on network support and may not be available in all areas Charger Socket Pin Layout 1 Ext AUD MIC IN JTAG TMS Use 2 JTAG TRST Use 3 GND JTAG TMK Use 4 Auxiliary Audio Out JTAG TDI 5 RS232 DSR 6 RS232_RXD 7 RS232_TX...

Страница 14: ... Times Identical to Leap maximum charge times shown Battery Charge time with Switch Mode Travel charger to 95 Charge time with Linear Travel charger to 95 600 mAh LiIon 95 minutes 160 minutes 650mAh Ni MH 175 minutes 210 minutes 900 mAh LiIon 220 minutes 260 minutes ...

Страница 15: ...of 51 GSM Field Service Support 8 T200 T2688 SECTION 3 FEATURE LIST ...

Страница 16: ...io Settings Tools Call Services Network 1st Generation Menu 2nd Generation Menu 3rd Generation Menu 4th Generation Menu Th Generation Menu 6th Generation Menu Phone Book Messages Security Find Record Add Record Dialed PHONE BOOK Last Number Delete Memory Name 1 By Name 2 Delete All 1 Delete all Own Number 1 Dialed 2 Received 3 Missed 4 All Received Missed Delete All 1 Send 2 Edit 3 Delete 4 Move 1...

Страница 17: ...roadcast 1 On 2 Off Settings Topics 1 English 16 Chinese Language 1 1 Hour 2 6 Hours 3 12 Hours 4 1 day 5 1 Week Route Center Valid Period Delete All Voice Mail Alert Beep Reply path Notification Format 1 On 2 Off 1 On 2 Off 1 On 2 Off 1 Text 2 Paging 3 E mail 4 Fax 5 Voice 6 Ermes 7 Telex 8 Grp4 Fax ...

Страница 18: ...t Call All Calls Call Rate Cost Limit 1 Time 2 Cost Unreachable message Cancel All Call Waiting Divert Voice If No Reply Number 1 Activate 2 Cancel Int l Out In when Roam Cancel All All Incoming message All Outgoing Int l Exc Home Number Cancel Status Activate message 1 Time 2 Cost 3 Clear Time 4 Clear Cost 1 Currency 2 Charge Unit Line in Use 1 Line 1 2 Line 2 Next Call 1 Voice 2 Data 3 Fax ...

Страница 19: ...Automatic 1 Available Networks PHONE SETTINGS Auto Redial Answer by Key Lock 1 Auto 2 Any Key 3 Send Key Backlight Language Time Alert Restore 1 English 3 Indonesian Display 1 On 2 Animation 1 3 Animation 2 1 Automatic 2 Prompt 3 Off Confirm 1 On 2 Off Phone Code ...

Страница 20: ...work Code Enter Code Enter Password Fixed Dial View SIM Lock Set Status Modify 1 On 2 Off Enter PIN 2 Set Status Change Code 1 On 2 Off Unlock code AUDIO SETTINGS Ring Volume Ring Type 1 Ring 1 6 Melody 1 18 Melody 13 19 Vibrate 20 Vib Ring Keypad Tone 1 On 2 Off Alarm Type 1 Ring 1 6 Melody 1 18 Melody 13 19 Vibrate 20 Vib Ring ...

Страница 21: ...of 51 GSM Field Service Support 14 T200 T2688 Set Time TOOLS Set Alarm 1 On 2 Off Calculator Calender 1 On 2 Off ...

Страница 22: ...of 51 GSM Field Service Support 15 T200 T2688 SECTION 4 DISASSEMBLY PARTS ...

Страница 23: ...80387A95 Ground Cord 66 80334B36 Wrist Band 42 80385A59 Plastic Bladed Tool SLN7223A T6 Torx Driver 4 3 Disassembly Procedure The following set of diagrams will demonstrate the correct sequence and action required to disassemble the T200 The use of the exploded diagram on pages 19 may be of some assistance for part recognition 4 4 Assembly Procedure Once the unit is disassembled and the repair is ...

Страница 24: ...the battery latch and remove the battery pack from the housing 3 Using a T5 Torx driver remove the 4 retaining screws 4 Unclip the 2 snap fits from the left and right hand sides of the unit and separate the rear from the front housings 5 Carefully lift the main PCB from the front housing ...

Страница 25: ...Service Support 18 T200 T2688 9 Remove keypad from front housing 5 Remove Volume buttons by pulling upwards 6 Insert the pointed end of plastic tool below speaker and pull upwards Replace with new speaker after removal ...

Страница 26: ...of 51 GSM Field Service Support 19 T200 T2688 4 5 Exploded Parts Diagram ...

Страница 27: ...1 001 Keypad 13 47 G0101 011 Keypad Chinese 14 47 G0104 001 Microphone holder 15 47 G0109 001 Buzzer cap 16 47 G0105 001 Speaker cushion 17 56 07249 071 LCD module 18 60 G0105 001 Volume key switch 19 60 G0109 003 Lower case 20 60 G0108 003 Upper case Blank 21 60 G0108 021 Upper case Yellow 22 60 G0108 011 Upper case Red 23 60 G0108 041 Upper case Blue 24 60 G0108 051 Upper case Silver 25 60 G0108...

Страница 28: ...of 51 GSM Field Service Support 21 T200 T2688 SECTION 5 SIM CARDS AND SECURITY ...

Страница 29: ...wered on The button should then be pressed for approximatly 3 second until test appears on the display and the correct commands must then be followed Figure 6 1 SIM Card insertion 5 2 Live Sim Card A SIM Subscriber Identity module card will be required to access the existing local GSM DCS PCS cellular network or remote networks when travelling If the roaming agreement has been made with the provid...

Страница 30: ...8 0722OKMaster Unlock code for Phone and Sim Lock 7 302 OK Acoustic test 1 Greeting 2 Main VlmGain 3 Input Cal 4 Output Cal 5 Side In Gain 6 Vox Gain 7 Min Mic Engy 8 More a In vlm Gain b Aux Vlm Gain c Silence Prd d Supp Prd e In Volume f Out Volume g Icon h Image i Animation 8 303 OK Settings Saved 9 400 OK ADC Cal val Use with care Contains Calibration factors Please see DM Tools section for ot...

Страница 31: ...to the PCB and is stored within the unit s memory The following figure gives a description of the make up of this number Figure 5 3 IMEI label breakdown Some other label number configurations that will be present will be XCVR NUMBER Identifies type of product i e T200 Usually SWF SUG number PACKAGE MODEL NUMBER Determines type of equipment mode in which it was shipped and language with which it wa...

Страница 32: ...of 51 GSM Field Service Support 25 T200 T2688 SECTION 6 REPAIR AND TEST PROCEDURES ...

Страница 33: ... no replacement PCB available 6 2 Mechanical repairs Assembly replacement level troubleshooting and repair of the T200 is limited to isolation and replacement of the main mechanical parts only See Exploded parts diagram and associated parts list p19 6 3 Basic Modular Troubleshooting The troubleshooting information in Table 2 shows some typical malfunction symptoms and for the corresponding verific...

Страница 34: ...splay is erratic or provides Partial or no display a Logic RF Board Assembly Defective Replace Logic RF Assembly refer to symptom 1c Verify that fault has been cleared and replace faulty unit 4 Incoming call alert transducer audio distorted or volume is too low a Logic RF Board Assembly Defective Replace Logic RF Assembly refer to symptom 1c Verify that fault has been cleared and replace faulty un...

Страница 35: ...ross if unit now tests OK replace faulty rear housing If not proceed to c c Logic RF Board Assembly Defective Replace Logic RF Assembly refer to symptom 1c Verify that fault has been cleared and replace faulty unit 9 Internal Charger not working a Faulty Charger Attempt to charge unit with known good charger if OK replace charger If fault still exists proceed to b b Logic RF Board Assembly Defecti...

Страница 36: ...om tool bar then Set comm port either 1 or 2 the gray dot indicates selected port Set baud rate 19200 to allow flexing access Set eeprom mode default Remove charger jack from download box Note To upgrade the s w from 701205 to 701214 you must use the database file associated with the older version 701205 So in the Choose Database File you would choose 701205 bin instead of 701214 bin To then use f...

Страница 37: ...ng the correct files plug phone into cable but DO NOT power on Then hit the download button When you get to this point you have 10 seconds to power the phone on If you don t power the phone on in the 10 seconds then DM Tools will see this as a flash fail Assuming no problems the following screen should be seen during the flashing procedure Screen dump during flash The flashing procedure also flexe...

Страница 38: ...and choose the Flex option to obtain the following screen The flex settings are loaded from a file with designation fle and is known as FlexOption Profile The load option is obtained by right clicking the mouse on the DM Tools s window and then selecting Load from Profile The U U T should be powered on first for all flexing operations ...

Страница 39: ...options are password protected and can not be changed manually unless the key and password are known TEST COMMANDS Select View from tool bar and highlight MMI Test to obtain the following screen Then tick the appropriate test and press the MMI Test button and follow instructions ...

Страница 40: ...of 51 GSM Field Service Support 33 T200 T2688 SECTION 7 ACCESSORIES ...

Страница 41: ...ed US without holes in prongs for the PRC UK Euro Aust NZ India Switch mode Travel Charger Input 90 260V varies by plug type for each country AC Output 6V 750 mA Cigarette Charger Input 12 24V DC Output 6V 750 mA Portable Hands free plugs into butt plug Desktop charger base conceptual design Linear Travel Charger Input voltage and plug requirements per each country AC Picture not available Picture...

Страница 42: ...of 51 GSM Field Service Support 35 T200 T2688 SECTION 8 SALES MODEL NUMBERS ...

Страница 43: ...8UD 99 G0521 DBF Elec Blue SA2143AJ3B1 SA2143AJ3B1 AU EBU Australia T948UE 99 G0521 EOF Copper Orange SA2143AE5B1 SA2143AE5B1 AU ORG OneTel T948UE 99 G0521 EGF Misty Green SA2143AF5B1 SA2143AF5B1 AU GRN T948UE 99 G0521 EIF Teal Ice SA2143AG5B1 SA2143AG5B1 AU ICE T948UE 99 G0521 EBF Elec Blue SA2143AJ3B1 SA2143AJ3B1 AU EBU Australia T948UF 99 G0521 FOF Copper Orange SA2143AE5B1 SA2143AE5B1 AU ORG D...

Страница 44: ...RN T948US 99 G0521 SIH Teal Ice SA2150AG5B1 SA2150AG5B1 SG ICE T948US 99 G0521 SBH Elec Blue SA2150AJ3B1 SA2150AJ3B1 SG EBU Maly SGP T948UW 99 G0521 WOH Copper Orange SA2150AE5B1 SA2150AE5B1 SG ORG T948UW 99 G0521 WGH Misty Green SA2150AF5B1 SA2150AF5B1 SG GRN T948UW 99 G0521 WIH Teal Ice SA2150AG5B1 SA2150AG5B1 SG ICE T948UW 99 G0521 WBH Elec Blue SA2150AJ3B1 SA2150AJ3B1 SG EBU Maly SGP T948UX 99...

Страница 45: ...reen SA2148AF5B1 SA2148AF5B1 PHI GRN T948UK 99 G0521 KIC Teal Ice SA2148AG5B1 SA2148AG5B1 PHI ICE T948UK 99 G0521 KBC Elec Blue SA2148AJ3B1 SA2148AJ3B1 PHI EBU Philippines T948UL 99 G0521 LOC Copper Orange SA2148AE5B1 SA2148AE5B1 PHI ORG T948UL 99 G0521 LGC Misty Green SA2148AF5B1 SA2148AF5B1 PHI GRN T948UL 99 G0521 LIC Teal Ice SA2148AG5B1 SA2148AG5B1 PHI ICE T948UL 99 G0521 LBC Elec Blue SA2148A...

Страница 46: ...of 51 GSM Field Service Support 39 T200 T2688 SECTION 9 GLOSSARY OF TERMS ...

Страница 47: ... Transceiver Station BTS Color Code BCCH Broadcast Control Channel BCD Binary Coded Decimal BGA Ball Grid Array BCU BTS Control Unit Bm Full rate traffic channel BN Bit Number BS Base Station BSC Base Station Controller BSIC Base Transceiver Station Identity Code BSS Base Station System BSSAP BSS Application Part DTAP and BSSMAP BSSC Base Station System Control Cabinet BSSMAP Base Station Systems ...

Страница 48: ...Ec No Ratio of energy per modulating bit to the noise spectral density EGSM Extended Group special Mobile EFR Enhanced Full Rate EIR Equipment Identity Register EIRP Effective Isotropic Radiated Power EMC Electromagnetic Compatibility EMX Electronic Mobile Exchange ETSI European Telecommunications Standards Institute FACCH Fast Associated Control channel FACCH F Full rate Fast Associated Control c...

Страница 49: ...cedure DM mobile D channel Lm Traffic channel with capacity lower than Bm LPC Linear Predictive Code LR Location Register MA Mobile Allocation MAH Mobile Access Hunting MAI Mobile Allocation Index MAIO Mobile Allocation Index Offset MAP Mobile Application Part MCC Mobile Country Code MCI Malicious Call Identification MD Mediation Device ME Mobile Equipment MF Multi Frequency tone signaling type ML...

Страница 50: ...itched Telephone PTO Public Telecommunications Operator QOS Quality of Service RAB Random Access Burst RACH Random Access Channel RBDS Remote BSS Diagnostic Subsystem RBU Remote Base Station Unit PCN RCU Radio Channel Unit REC Recommendation REL Release RELP LTP Regular Pulse Excitation Long Term Prediction REQ Request RFCH Radio Frequency Channel RFN Reduced TDMA Frame Number RLP Radio Link Proto...

Страница 51: ...rate speech TCH TCH HS A half rate speech TCH TCP Transmission Control Protocol TDMA Time Division Multiple Access TE Terminal Equipment TMN Telecommunications Management Network TMSI Temporary Mobile Subscriber Identity TN Timeslot Number TRX Transceivers TTY TeleTYpe refers to any terminal TS Time Slot TUP Telephone Users Part UI Unnumbered Information frame Um Air Interface USSD Unstructured Su...

Страница 52: ...Topaz T2688 T200 T2988 T205 L3 Circuit Description 1 Motorola Proprietary Information T2688 T200 T2988 T205 Level 3 Circuit Description 01 03 01 V1 3 ...

Страница 53: ... 0V 3 6V 3 6V 0V 0V 0V GSM TX 3 6V 0V 3 6V 0V 0V 2 8V DCS RX 0V 3 6V 3 6V 0V 2 8V 0V DCS TX 0V 3 6V 0V 3 6V 2 8V 2 8V 5 The appropriate frequency is then fed out from U501 Pin 5 GSM GSM_RX or from Pin 7 DCS DCS_RX 6 The received frequency is then fed into a Dual Band select SAW Standing Acoustic Wave filter U602 Loss approximately 5dB The GSM received frequency is then applied to the base of Low N...

Страница 54: ... DCS OFF ON OFF 1st Mixer GSM ON OFF OFF 1st Mixer DCS OFF ON OFF 2nd Mixer ON ON ON PGA ON ON ON I Q Demodulator ON ON ON 7 The gain of the Low Noise Amplifiers is approximately 18dB The amplified signal is then fed onto Dual Image rejection SAW Standing Acoustic Wave filter U601 an identical filter to U602 Loss approximately 2dB 8 The output is fed out of the filter on Pin 7 for GSM and Pin 5 fo...

Страница 55: ...e 270Mhz this will be mixed with the incoming 1st IF of 225Mhz to give a resultant 2nd IF of 45Mhz this is then tuned by the 45Mhz tank Circuit consisting of C637 and L616 The 45Mhz signal carrying the modulation will then be fed into a phase comparator where it will be demodulated by a reference 45 MHz signal created form the 540Mhz signal which has passed through the divide by 2 and then though ...

Страница 56: ...pling rate of 270 8KHz 24 This gives us a low enough frequency for adjacent channel rejection and therefore channel separation 19 Calibration of the IQ paths is achieved by internally shorting out the 2 input I paths and then the same again on the 2 input Q paths the digital value measured will then be stored in a register Once the RXI and Q paths are reconnected to the circuitry again the calibra...

Страница 57: ...if some data is lost whilst travelling OTA then for example instead of 8 bits of speech data being lost only 4 bits of speech and 4 bits of redundant data De Segmentation and CRC Attachment analysis During the transmission process the data is broken into packets of various lengths No of bits These packets are then processed to give a checksum of what should be expected at the receiver Once in the ...

Страница 58: ... d and a high frequency noise tone is injected into the signal This noise will be used for programming the PGA There are 7 programmable gains and 1 mute function 26 The noise is then removed in a smoothing filter and the appropriate gains or attenuations made 27 The converted speech can then take 1 of 2 paths 28 Path 1 to the Internal speaker LS1 the audio is fed out of the VEGA on Pins 32 33 and ...

Страница 59: ...signal will be driven through a PGA with a gain of between 12dB to 12dB in 1dB steps 35 A Sigma Delta Modulator converts the signal from analogue to Digital sampled at 1Mhz The signal is the decimated and the sampling rate taken down to signal samples at 8Khz 36 Once again as in RECEIVE the loop between the VEGA IC and the GEMINI IC is put in place for standard data processing 37 The transmitted s...

Страница 60: ... width of BENAPin 71 when BULON is active Pin 74 actual effective transmission burst length BENA 32 bits 43 Calibration of TXI Q paths can be set during the BCAL timing window 44 The analogue information is now sent from VEGA Pins 57 60 to the TX RX IC on the TX I Q lines Pins 13 16 45 The signal routing for the TX I Q through the TX RX IC is as follows 46 The TXI Q signals are routed to 2 modulat...

Страница 61: ... 6 with the TX frequency being fed out on Pin 1 The voltage TX2V8 which is switched by the signal TXVCO_OFF supports the TXVCO The signal BS Pin 5 controls whether the TXVCO produces a DCS or GSM output 53 As the TXVCO produces both GSM900 or DCS1800 frequencies from the same output line the signal must be fed into a diplexer U605 this circuit uses inductive properties to effectively delay 1 frequ...

Страница 62: ... the PA back stage Pin 8 controls the PA power saturation The Sense Resistor R203 0 033 ohm is used to sense the voltage variations on the VBAT line when the PA draws more or less current and is connected to Pin 4 of Q201 The transistor is biased on using VBAT Pin 5 and the change in voltage over the sense resistor is throughput from Pin 4 to Pin 3 From here it will vary the non inverting input of...

Страница 63: ...the signal LO2 and is fed in on Pin 3 finif To complete the phase lock loop 72 On the RF side the supporting voltage is again SYN2V8 and enters on Pin 11 vccrf The charge pump output for the TXVCO is fed out on Pin 8 Dorf to the RXVCO U401 Pin 3 U401 is supported by SYN2V8 73 The band select signal BS enters U401 on Pin 4 and will select the appropriate output to either GSM or DCS on Pin 1 The out...

Страница 64: ... and Pin 16 out SIM Block Pin 3 80 SIM I O also acts as a SIM Presence detect signal 81 Power for the unit can be taken from either internal Battery or from an external source The battery has 4 contacts from battery connector JP2 Pin 1 Supplies VBAT directly Pin 2 BATEMP is used to monitor Battery temperature during charging and is fed to VEGA for A D processing Pin 3 BAID is Battery ID and is use...

Страница 65: ...via software IO1 by U25 90 For Power output when using the data cable VBAT is fed onto the source S2 of U26 with U29 providing gate bias D12 is forward biased for this 1 application 91 The real time clock is generated by crystal X2 and runs at 32 768MHz It is driven by the charge pump from U46 Pin 1 OSC1 Synchronisation is achieved by IO14 which is clock generated by Gemini pin 50 with the IC enab...

Страница 66: ... vibrator support voltage VBAT a path to earth through BQ1 100 U6 provide EMF protection 101 The buzzer alert is operated using the signal BUZZER from Gemini Pin 20 this signal forces BQ4 to conduct creating the current path for the buzzer U8 support voltage VBATto earth 102 U7 Provides EMF protection for the buzzer Keypad and Back lights 103 The backlights are split into 3 for the LCD D1 D3 and t...

Страница 67: ...s Function Key COL0 COL1 COL2 COL3 ROW 0 ROW 1 ROW 2 ROW 3 ROW 4 2 S1 0 0 S2 0 0 7 S3 0 0 4 S4 0 0 1 S5 0 0 6 S6 0 0 3 S7 0 0 0 S8 0 0 8 S9 0 0 5 S10 0 0 LEFT S11 0 0 RIGHT S12 0 0 S13 0 0 9 S14 0 0 YES S15 0 0 NO CLR PWR S16 No Matrix used S16 switches VBAT directly onto the PWR signal to power up the unit CLEAR S17 0 0 ...

Страница 68: ...nge There is no other hardware difference to the product PCB is the same and other mechanical parts are the same Software is different Version 3 X is Refresh software with additional features for T2988 Asia and T200 EMEA Additional features covered are 1 WAP 2 Quick Access Interface 3 QuickNotes Pre stored User Definable SMS Message 4 Scheduled Power On Off 5 Thai and Vietnamese prompt 6 SIM Lock ...

Страница 69: ... 25 20 21 22 23 IF_TUNE 7 To VEGA To VEGA TX_ON 44 45 46 From GEMINI BS 35 To U603 From Synthesiser TXI TXQ 13 14 15 16 2 1 BS SEE PAGE 8 9 OF LEVEL 3 CIRCUIT DESCRIPTION 11 8 9 90 deg 45 MHz TX_DCS TX_GSM 90 o TX LOOP FILTER 6 1 TX2V8 10 5 U605 Diplexer 5 1 3 TX_GSM TX_DCS U201 PA 2 4 12 10 6 8 U202 PA CONTROL BS BS 16 RAMP From VEGA RAMPDA 3 5 1 4 VBAT 14 R203 VBAT 0 033Ohm 4 1 2 3 5 6 TXON VBAT...

Страница 70: ...klights PWR 2 PWR CHGERP 1 CHGERP LCDRST 25 U28 SIM SIM Interface 20 VSIM 5 4 RST 3 16 19 1 CLK 15 2 S_I O S_RST S_CLK S_PWST S_3V5V To Gemini S_I O S_RST S_CLK S_PWST S 3V5V 105 100 103 104 102 To U27 Power Management IC SIM_PD SIM I O BATTERY JP2 VBAT 1 2 BATEMP To VEGA 37 38 BATEMP BATID BATID From Batt 3 4 A3 S D G U30 IO9 IO9 From Charger CCt BQ6 BQ3 U29 C81 IO11 To Gemini From Gemini IO11 To...

Страница 71: ......

Страница 72: ......

Страница 73: ......

Страница 74: ......

Страница 75: ...5 0 1UF 0603 R8 10K R92 68K 1 TP6 1 TP5 1 U48 VCE 2 1 C34 33PF TP8 1 U5 VCE 2 1 X1 MICROPHONE U49 VCE 2 1 C73 X C76 X R67 100K TP21 1 R60 100K R59 100K U46 PCF8563 OSCI 1 OSCO 2 nINT 3 VSS 4 SDA 5 SCL 6 CLK 7 VDD 8 R82 10K R77 100K R58 X R68 100K R102 5 6K R100 10K U54 DAN222 1 3 2 U53 DAN222 1 3 2 C66 0 01UF X7R R87 100 R89 47K R88 47K C53 0 1UF 0603 C57 0 47UF C52 4 7UF 10V 0805 C59 0 1UF C75 X ...

Страница 76: ...p U601 EFCH9418MTY6 GSM 7 DCS 5 DCS 3 GSM 1 6 6 4 4 2 2 8 8 C626 0 1u Q601 BFP420 1 3 4 2 U605 LFDP20N0020A DCS 3 2 2 GSM 1 4 4 IN 5 6 6 R621 10dB_PAD 1 2 3 4 C607 100p U502 74LCX00MTC A0 1 B0 2 O0 3 A1 4 B1 5 O1 6 GND 7 O3 8 B3 9 A3 10 O2 11 B2 12 A2 13 VCC 14 U606 ENFVZ4G00 2 2 OUT 1 3 3 VT 6 4 4 SW 5 7 7 VCC 10 9 9 8 8 C601 1p R622 10dB_PAD 1 2 3 4 C641 10p L503 5n6 0603L R614 47k C660 15p C647...

Страница 77: ...ntensity Contrast 5 403 OK List the Manufacturing Informations 6 1998 0722OK Master Unlock code for Phone and Sim Lock 7 302 OK Acoustic test 1 greeting 2 Main VlmGain 3 Input Cal 4 Output Cal 5 Side In Gain 6 Vox Gain 7 Min Mic Engy 8 More 1 In vlm Gain 2 Aux Vlm Gain 3 Silence Prd 4 Supp Prd 5 In Volume 6 Out Volume 7 Icon 8 Image 9 Animation 8 303 OK Settings Saved 9 400 OK ADC Cal val use with...

Результаты поиска

Содержание TALKABOUT T2688

Отзывы:

Похожие инструкции для TALKABOUT T2688

Бренды по названию

Популярные бренды

Motorola TALKABOUT T2688, Руководство по обслуживанию

Результаты поиска

Содержание TALKABOUT T2688

Отзывы:

Похожие инструкции для TALKABOUT T2688

Бренды по названию

Популярные бренды