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Panasonic KX-TG5571BXM Скачать руководство пользователя страница 110

32 SCHEMATIC DIAGRAM (BASE UNIT_RF PART)

C773

J100P

C836

K1uF(1608)

C803

K0.01

C806

D10P

C801

C3P

C872

C1P

L871

6.8nH

Q871

NESG2021M

1

B

2

E

3

C

4

E

C873

D10P

NC

C875

C851 J100P

NC

L874

IC801

1

VCC_PA2

2

TX

3

GND_ISOL1

4

GND_ISOL2

5

RX

6

VCC_LNA

7

REFI

N

8

REFOUT

9

RXGAI

N

10

CP_OUT

11

TV_I

N

12

VARGND

13

PLL_BYP

14

VCC_PLL

15

2G4_OUT

16

GND_ISOL3

17

2G4_I N

18

VCC_TXRX

19

SYN_CLK

20

SYN_EN

21

SYN_DATA

22

RXEN

23

TXEN

24

VCC_PA1

K0.01

C834

J220P

C832

K470P

C835

R834

3.3K

R832

5.6K

R873 120

C827 C5P

R872 47K

C876

C1P

NC

L826

L873

2.2nH

K1000P

C854

K1000P

C809

R809 22K

J22P

C802

J15P

C804

C807

NC

NC

R808

C890

J100P

C895

J100P

C871 C1P

C874

1.5nH

C857

C0.5P

C2P

C811

D10P

C821

C852 K0.01

IC851

1

VCC2

2

VCC3

3

GND

4

GND

5

PAOUT

6

TX

7

SW1

8

SW2

9

ANT1

10 GND
11 GND
12 ANT2

13

SW

3

14

SW

4

15

RX

16

GN

D

17

PACTL

18

GN

D

19

PAI N

20

GN D

21

VCC0

22

GN D

23

GN D

24

VCC1

NC

L822

C891

NC

C896 NC

FL811

1

2

3

FL821

1

2

3

K470P

C856

R856 10K

TX-Amp.

RX-Amp.

ANT-SW.

5.8GHz-RF

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

(11)

(13)

(12)

(14)

NC: No Components

5.8GHz TX

5.8GHz RF

5.8GHz RF

5.8GHz RX

3.0V

3.0V

4.0V

110

KX-TG5571BXM / KX-TGA550BXM

Содержание KX-TG5571BXM

Страница 1: ...ts reserved Unauthorized copying and distribution is a violation of law KX TG5571BXM KX TGA550BXM Expandable Digital Cordless Answering System Metallic Gray Version for Asia Middle Near East and Other Areas Telephone Equipment ORDER NO KM40502620CE ...

Страница 2: ...56 9 DESCRIPTION 57 9 1 Frequency 57 9 2 FHSS Frequency Hopping Spread Spectrum 57 9 3 Signal Flowchart in the Whole System 59 10 EXPLANATION OF LINK DATA COMMUNICATION 60 10 1 Calling 60 10 2 To Terminate Communication 60 10 3 Ringing 60 11 BLOCK DIAGRAM BASE UNIT_MAIN 61 12 CIRCUIT OPERATION BASE UNIT_MAIN 62 12 1 DSP Digital Speech Signal Processing IC501 62 12 2 Flash Memory IC601 62 12 3 Powe...

Страница 3: ...9 29 REPLACEMENT PARTS LIST 100 29 1 Base Unit 100 29 2 Handset 102 29 3 Charger Unit 104 29 4 Accessories and Packing Materials 105 30 FOR SCHEMATIC DIAGRAM 107 30 1 Base Unit SCHEMATIC DIAGRAM BASE UNIT_MAIN 107 30 2 Handset SCHEMATIC DIAGRAM HANDSET_MAIN 107 30 3 Charger Unit SCHEMATIC DIAGRAM CHARGER UNIT 107 31 SCHEMATIC DIAGRAM BASE UNIT_MAIN 108 32 SCHEMATIC DIAGRAM BASE UNIT_RF PART 110 33...

Страница 4: ...eful not to heat too long PbF solder will tend to splash if it is heated much higher than its melting point approximately 1100 F 600 C If you must use Pb solder on a PCB manufactured using PbF solder remove as much of the original PbF solder as possible and be sure that any remaining is melted prior to applying the Pb solder When applying PbF solder to double layered boards please check the compon...

Страница 5: ... D327 D313 D312 D351 L351 L352 D353 X201 MICM MICP Q243 Q261 Q262 Q231 Q251 D363 Q221 RA251 Q331 Q363 Q362 Q361 CHG1 MIC CHG2 SPP PbF RECEIVER SPM RX TX VBAT2 BATTM BATTP VBAT1 VSS2 VSS1 IC241 IC261 RA201 RA255 TXO RXI CI JTAG S I C TXE RXE TE C701 IC761 IC841 Q871 IC701 IC851 IC801 SHIELD KX TGA550R A PQUP 11292Z LED261 Marked Component View Note The location of the PbF mark is subject to change ...

Страница 6: ...he Battery Note for service The battery strength may not be indicated correctly if the battery is disconnected and connected again even after it is fully charged In that case by recharging the battery as mentioned above you will get a correct indication of the battery strength 6 KX TG5571BXM KX TGA550BXM ...

Страница 7: ...4 1 4 Battery Strength 4 1 5 Battery Replacement 4 1 6 Battery Performance 7 KX TG5571BXM KX TGA550BXM ...

Страница 8: ...4 2 Location of Controls 4 2 1 Base Unit 8 KX TG5571BXM KX TGA550BXM ...

Страница 9: ...4 2 2 Handset 4 2 3 Charger Unit for Optional Handset 9 KX TG5571BXM KX TGA550BXM ...

Страница 10: ...4 3 Displays 4 3 1 Display Items 4 3 2 Menu Icons 10 KX TG5571BXM KX TGA550BXM ...

Страница 11: ...4 3 3 Troubleshooting Handset LCD 11 KX TG5571BXM KX TGA550BXM ...

Страница 12: ...12 KX TG5571BXM KX TGA550BXM ...

Страница 13: ...4 4 Settings 4 4 1 Connections 13 KX TG5571BXM KX TGA550BXM ...

Страница 14: ...4 4 2 Guide to Handset Programming 14 KX TG5571BXM KX TGA550BXM ...

Страница 15: ...15 KX TG5571BXM KX TGA550BXM ...

Страница 16: ...4 4 3 Dial Lock For Service Hint If the current password is forgotten enter 726276642 and you will be able to go to next step 16 KX TG5571BXM KX TGA550BXM ...

Страница 17: ...4 4 4 Direct Commands 17 KX TG5571BXM KX TGA550BXM ...

Страница 18: ...18 KX TG5571BXM KX TGA550BXM ...

Страница 19: ...19 KX TG5571BXM KX TGA550BXM ...

Страница 20: ...4 5 Troubleshooting If the handset display shows error messages see Troubleshooting Handset LCD P 11 for the Cause Solution 20 KX TG5571BXM KX TGA550BXM ...

Страница 21: ...21 KX TG5571BXM KX TGA550BXM ...

Страница 22: ...22 KX TG5571BXM KX TGA550BXM ...

Страница 23: ...23 KX TG5571BXM KX TGA550BXM ...

Страница 24: ...24 KX TG5571BXM KX TGA550BXM ...

Страница 25: ...5 1 Base Unit Shown in Fig To Remove Remove 1 Cabinet Cover Screws 2 6 12 A 5 Main P C Board Tapes Solders and Cable Main P C Board 2 Operational P C Board Tape Screws 2 6 8 B 8 Operational P C Board 25 KX TG5571BXM KX TGA550BXM ...

Страница 26: ...5 2 Handset Shown in Fig To Remove Remove 3 Cabinet Cover Screws 2 14 C 2 4 Follow the procedure 5 Main P C Board Tape and Solders Screws 2 9 D 3 Main P C Board 26 KX TG5571BXM KX TGA550BXM ...

Страница 27: ...5 3 Charger Unit Shown in Fig To Remove Remove 6 Cabinet Cover Screws 2 6 12 E 2 Main P C Board Main P C Board 27 KX TG5571BXM KX TGA550BXM ...

Страница 28: ...6 ASSEMBLY INSTRUCTIONS 6 1 Fix the LCD and the Receiver Guide to the Main P C Board Handset 28 KX TG5571BXM KX TGA550BXM ...

Страница 29: ...k the RF part P 35 Check Handset Transmission P 42 Check Handset Reception P 42 Check Caller ID P 42 Note 1 When a user claims that the unit disconnects a call right after the greeting message and no incoming messages can be recorded this symptom can not be reappeared with TEL simulator in the service center So in that case try Check Record P 31 item C 7 TROUBLESHOOTING GUIDE 29 KX TG5571BXM KX TG...

Страница 30: ...not be done 1 Check the peripheral circuit of Flash Memory visually 2 Confirm that the voltage is added to the power supply pin If no voltage is detected replace the Flash Memory because it might be defect 3 Solder the Flash Memory again E3 E9 When the adjustment data was checked an error was detected The adjustment data may not be written Note Flash Memory is IC601 DSP is IC501 30 KX TG5571BXM KX...

Страница 31: ...detection To solve this problem try changing the Auto Disconnect activation through the procedures below Auto Disconnect activation PROCEDURE Status Enable 2 sec CPU detect default STOP GREETING CHECK simultaneously Stand by 2 sec No CPU detect STOP GREETING CHECK VOL simultaneously Disable STOP GREETING CHECK VOL simultaneously If the Disable is selected even if the parallel connected telephone i...

Страница 32: ...cuit P 63 Cross Reference SIGNAL ROUTE P 84 Telephone Line Interface P 66 Note Flash Memory is IC601 DSP is IC501 Note Flash Memory is IC601 DSP is IC501 7 4 Check Playback 7 5 Check Sp phone Transmission 32 KX TG5571BXM KX TGA550BXM ...

Страница 33: ...nce Telephone Line Interface P 66 SIGNAL ROUTE P 84 Note Flash Memory is IC601 DSP is IC501 Note Flash Memory is IC601 DSP is IC501 7 6 Check Sp phone Reception 7 7 Check Battery Charge 33 KX TG5571BXM KX TGA550BXM ...

Страница 34: ...Note Flash Memory is IC601 DSP is IC501 1 Refer to Finding out the Defective part P 35 Cross Reference Check the RF part P 35 7 8 Check Link 34 KX TG5571BXM KX TGA550BXM ...

Страница 35: ...pairing 1 After all the checkings or repairing cancel the Registration of Regular HS to checked Base Unit and checked Handset to Regular BU 2 Re register the checked Handset to the checked Base Unit and Regular HS to Regular BU Note 1 HS Handset 2 BU Base Unit 35 KX TG5571BXM KX TGA550BXM ...

Страница 36: ...7 9 1 1 Canceling the Handset Registration 7 9 1 2 Reregistering the Handset 36 KX TG5571BXM KX TGA550BXM ...

Страница 37: ...7 9 2 RF Check Flowchart Each item 1 6 of RF Check Flowchart corresponds to Check Table for RF part P 38 Please refer to the each item 37 KX TG5571BXM KX TGA550BXM ...

Страница 38: ...ar BU 2 Confirm that RSSI of the Regular BU is approximately 2V by Oscilloscope 6 5 RX Sensitivity confirmation Regular HS BU Mode Test Burst Mode 1 HS BU to be checked Mode RX CW Mode 4 1 Place the Regular HS about 15cm away from the BU 2 Confirm that RSSI of the BU is approximately 2V by Oscilloscope 5 1 Place the HS about 15cm away from the Regular BU 2 Confirm that RSSI of the HS is approximat...

Страница 39: ...Register Regular HS to BU to be checked 2 Set BU to Test Link mode 3 Set Regular HS to Test Link mode Set TX Power and RX Sensitivity of the BU and Regular HS by CHART1 At distance of about 20m between HS and BU Link OK RX Sensitivity of the BU is OK No Link RX Sensitivity of the BU is NG 1 Register HS to be checked to Regular BU 2 Set Regular BU to Test Link mode 3 Set HS to Test Link mode Set TX...

Страница 40: ...7 9 5 RF DSP Interface Signal Wave Form Test Burst Mode 40 KX TG5571BXM KX TGA550BXM ...

Страница 41: ... Test Burst Mode 41 KX TG5571BXM KX TGA550BXM ...

Страница 42: ... the RF part P 35 7 12 Check Caller ID Cross Reference Telephone Line Interface P 66 Calling Line Identification Caller ID P 69 Note Make sure the format of the Caller ID or Call Waiting Caller ID service of the Telephone company that the customer subscribed to Also we recommend to confirm that the customer is really a subscriber of the service 42 KX TG5571BXM KX TGA550BXM ...

Страница 43: ...ODE 8 1 Test Mode Flow Chart for Base Unit 8 1 1 Test Burst Mode Note 1 LCD displays the Channel number 2 Refer to Check Table for RF part P 38 and RX CW Test Mode P 48 for proper Handset settings 43 KX TG5571BXM KX TGA550BXM ...

Страница 44: ...8 1 2 RX CW Test Mode Note 1 LCD displays the Channel number 2 Refer to Check Table for RF part P 38 and Test Burst Mode P 47 for proper Handset settings 44 KX TG5571BXM KX TGA550BXM ...

Страница 45: ...Link Mode Note 1 LCD displays the Channel number 2 LCD displays the number of selected power 3 Refer to Check Table for RF part P 38 and Test Link Mode P 49 for proper Handset settings 45 KX TG5571BXM KX TGA550BXM ...

Страница 46: ...8 1 4 Adjustment Mode Cross Reference Check and Adjust X501 Base Unit Frequency P 51 Note 1 This is an adjustment value hex 46 KX TG5571BXM KX TGA550BXM ...

Страница 47: ...t for Handset 8 2 1 Test Burst Mode Note 1 LCD displays the Channel number exception default CH00 1ch 2 Refer to Check Table for RF part P 38 and RX CW Test Mode P 44 for proper Base Unit settings 47 KX TG5571BXM KX TGA550BXM ...

Страница 48: ... RX CW Test Mode Note 1 LCD displays the Channel number exception default CH00 1ch 2 Refer to Check Table for RF part P 38 and Test Burst Mode P 43 for proper Base Unit settings 48 KX TG5571BXM KX TGA550BXM ...

Страница 49: ... Mode Note 1 LCD displays the Channel number exception default CH00 1ch 2 for factory use only 3 Refer to Check Table for RF part P 38 and Test Link Mode P 45 for proper Base Unit settings 49 KX TG5571BXM KX TGA550BXM ...

Страница 50: ...ustment Mode Cross Reference 1 Adjust Battery Low Detector Voltage Handset P 51 Note 2 These are the default values 3 These values may not be fixed depending on the battery strength 50 KX TG5571BXM KX TGA550BXM ...

Страница 51: ...checking tolerance 100Hz adjust to Adjustment tolelance 30Hz by pressing or key Adjustment Tolerance 13 824MHz 30Hz 5 Press TALK key to write the new frequency factor in EEPROM 6 Turn the power off Then this value is available Cross Reference Adjustment Mode P 50 8 4 Adjust Battery Low Detector Voltage Handset After Handset s DSP IC201 or EEPROM IC241 replacement Re writing Battery Low voltage to ...

Страница 52: ...C503 C680 C663 C381 C342 C332 C331 C307 C304 R300 C421 R421 RST R422 R524 R525 R522 R375 R374 R373 R371 R303 C308 R301 R365 R364 C303 R340 R341 R304 R305 R372 R343 C371 R361 C551 C524 C522 C525 C509 C508 R509 R523 R521 C521 C422 C423 R423 R506 80 51 1 30 81 100 50 31 C611 R680 R460 R454 R459 R601 C601 C603 R473 R171 C172 C142 R112 R121 C121 C122 R122 C120 C517 R517 C174 C167 C513 C515 C365 C347 C3...

Страница 53: ...205 PDN C244 R243 C243 R226 C226 R209 R333 R334 C336 C377 C333 C303 C305 C383 C275 C274 C278 C277 R286 C284 C283 C279 C286 C371 C381 C211 L326 D326 L327 D327 D313 D312 D351 L351 L352 D353 X201 MICM MICP Q243 Q261 Q262 Q231 Q251 D363 Q221 RA251 Q331 Q363 Q362 Q361 CHG1 MIC CHG2 SPP PbF RECEIVER SPM RX TX VBAT2 BATTM BATTP VBAT1 VSS2 VSS1 IC241 IC261 RA201 RA255 TXO RXI CI JTAG S I C TXE RXE TE C701...

Страница 54: ...76 5826 590680 13 5770 404840 45 5798 944684 77 5827 484527 14 5771 294732 46 5799 834576 78 5828 374420 15 5772 188580 47 5800 728424 79 5829 268268 16 5773 078473 48 5801 618316 80 5830 158160 17 5773 972320 49 5802 512164 81 5831 052008 18 5774 862213 50 5803 402057 82 5831 941900 19 5775 756060 51 5804 295904 83 5832 835748 20 5776 645953 52 5805 185797 84 5833 725641 21 5777 539801 53 5806 07...

Страница 55: ...662 13 5770 402867 45 5798 942710 77 5827 482554 14 5771 296714 46 5799 836558 78 5828 376402 15 5772 186607 47 5800 726451 79 5829 266294 16 5773 080455 48 5801 620298 80 5830 160142 17 5773 970347 49 5802 510191 81 5831 050035 18 5774 864195 50 5803 404039 82 5831 943882 19 5775 754087 51 5804 293931 83 5832 833775 20 5776 647935 52 5805 187779 84 5833 727623 21 5777 537828 53 5806 077671 85 583...

Страница 56: ...Phone numbers Caller list and etc This operation should not be performed for a usual repair 8 8 1 Base unit Note 1 Telephone line must be connected 8 8 2 Handset Note 1 Be sure to short the battery terminals of the Handset with a lead wire etc for 2 seconds for discharge after removing the battery 56 KX TG5571BXM KX TGA550BXM ...

Страница 57: ... the same frequency The construction of RX TX frequency data is shown below It consists of 4 slots from the Base Unit to the Handset and 4 slots from the Handset to the Base Unit total 8 slots in 10ms By this slot system simultaneous air link and communication between 4 Handsets and the Base Unit can be realized One communication between Handset and the Base Unit is done by one slot from the Base ...

Страница 58: ...munications simultaneously Up to eight Handsets can be registered In 1 slot 1 25ms the 10ms of voice data is transmitted Each slot makes every frame frequency hop 100hops sec Although each slot UpLink3 and UpLink4 uses different frequency UpLink3 and DownLink3 use the same frequency 2 Handsets Link Traffic Bearer A link is established between Base Unit and Handset The state where duplex communicat...

Страница 59: ...P performs TDD TDMA and ADPCM decoding to convert the RXDATA into the voice signal then it is output to the speaker Transmission The voice signal entering from the Handset microphone is led to DSP IC201 The DSP encodes ADPCM and TDD TDMA with FHSS to TXMOD The TXMOD signal is enter to IC701 of RF PART and modulated to 2 4GHz The 2 4GHz signal is up converted to 5 8GHz RF signal by IC801 The RF sig...

Страница 60: ...10 EXPLANATION OF LINK DATA COMMUNICATION 10 1 Calling 10 2 To Terminate Communication 10 3 Ringing 60 KX TG5571BXM KX TGA550BXM ...

Страница 61: ...INUSE DETECT RECEIVE AMP DCIN IC331 RESET POWER_DOWN VRCCR VCC VCCA VCCPA CHARGE CONTROL CHG_CTL INT_1 V_RF INT_1 5 VCC ANSWER_LED INTCOM_LED INUSE_LED IC601 FLASH MEMORY LCD KEYS IC300 Q300 R131 R132 Q171 Q371 Q372 Q373 RSSI SHCTRL RADIO_EN TX_EN RX_EN LO_EN SYN_DATA SYN_CLK OSC_IN SYN_LE2 TXDATA V_RF VPA SI SO CS CHG_LED MSG_LED SP_PHONE_LED COM1 COM2 SEG3 12 KEY1 6 KEYA F RXDATA MIP SYN_LE1 SYN...

Страница 62: ...lay back and Line Monitoring modes of operation When the DTMF data from the Handset is received the DTMF signal is output Synthesized Voice Pre recorded message The DSP implements synthesized Voice utilizing the built in speech detector and a Flash Memory which stored the vocabulary Caller ID demodulation The DSP implements monitor and demodulate the FSK signals that provide CID information from t...

Страница 63: ...pply Circuit Function The power supply voltage from AC adaptor is converted to the desired voltage of each block Circuit Operation Q300 and IC300 4 0V DCDC Converter IC331 3 3V Regulator 63 KX TG5571BXM KX TGA550BXM ...

Страница 64: ...ent from overcharging Q361 and Q362 detect the ON HOOK state Handset is placed on Base Unit Q371 and Q372 control the charge current Q373 sends a signal to the Handset for about 5 seconds soon after the Handset is placed on the Base Unit This signal tells that the Handset is being charged on the Base Unit or the charger When the signal is received charged on the Base Unit No signal charged on the ...

Страница 65: ... Operation When the AC Adaptor is inserted into the unit then the voltage is shifted by IC331 and power is supplied to the DSP The set starts to operate when VCC goes up to 3 0V or more in the circuit voltage diagram Note 1 The initializing time of the DSP chip is 26 6ms under normal conditions 65 KX TG5571BXM KX TGA550BXM ...

Страница 66: ...he Tip T and Ring R leads When the telephone rings the AC ring voltage is transferred as follows T L101 R111 C111 Q111 DSP pin 3 BELL When the CPU DSP detects a ring signal Q141 turns on thus providing an off hook condition active DC current flow through the circuit Following signal flow is the DC current flow T L101 D101 Q141 Q161 R163 D101 L102 P101 R ON HOOK Circuit Q141 is open Q141 is connect...

Страница 67: ...eration The voltage of pin 35 of IC501 is monitored If a parallel connected telephone is put into OFF HOOK status the presence absence of a parallel connection is determined when the voltage changes by 0 2V or more When the set detects the parallel connected telephone is OFF HOOK status the line is disconnected You can enable or disable the Auto Disconnect function See Check Record P 31 67 KX TG55...

Страница 68: ...by detecting changes in the T R voltage Circuit Operation Parallel connection detection when on hook When on hook Q136 is ON the voltage is monitored at pin 35 of IC501 There is no parallel connection if the voltage is 1 65 V or higher while a parallel connection is deemed to exist if the voltage is lower Parallel connection detection when off hook When off hook Q136 is OFF the voltage is monitore...

Страница 69: ...The method is chosen according to the exchange of telephone office This unit is available to receive the data with both methods and displays the received data on LCD FSK Frequency Shift Keying format DTMF format It is the method to send the telephone number of calling party with DTMF to the telephone DTMF is sent before the first bell signal The data is sent in turn first the start code secondly t...

Страница 70: ...cuit 2 4GHz 2 4GHz FL811 IC851 5 8GHz Power Amp and V_PA V_RF RADIO_EN SYN_LE2 SYN_CLK SYN_DATA SYN_LE1 OSC_IN TX_EN SYN_OUT TX_DATA RX_DATA RSSI SHCTRL RF_RESET RX_EN RX_GAIN DSP PLL Serial Interface 5 8GHz Converter Circuit IC801 3 4GHz 5 8GHz PA_CONT VCC TXEN REFIN ANT0 RXEN RXGAIN Q871 5 8GHz LNA Circuit Antenna Switch Circuit 5 8GHz FL821 KX TG5571 BLOCK DIAGRAM Base Unit_RF Part KX TG5571BXM...

Страница 71: ...it 2 4GHz 2 4GHz FL811 IC851 5 8GHz Power Amp and V_PA V_RF RADIO_EN SYN_LE2 SYN_CLK SYN_DATA SYN_LE1 OSC_IN TX_EN SYN_OUT TX_DATA RX_DATA RSSI SHCTRL RF_RESET RX_EN RX_GAIN DSP PLL Serial Interface 5 8GHz Converter Circuit IC801 3 4GHz 5 8GHz PA_CONT VCC TXEN REFIN RXEN RXGAIN Q871 5 8GHz LNA Circuit Antenna Switch Circuit 5 8GHz FL821 KX TGA550 BLOCK DIAGRAM Handset_RF Part KX TG5571BXM KX TGA55...

Страница 72: ...iption RF part includes Transmitter and Receiver functions Digital signals Mainly voice data that come from DSP are modulated and are transmitted On the other hand received signals are demodulated and go out to DSP 72 KX TG5571BXM KX TGA550BXM ...

Страница 73: ...se Unit or 3 3V at Handset is supplied to the Power amplifier in 5 8GHz PA circuit IC841 is 3 0V Regulators and IC761 is a 2 5V Regulator They output Vcc_5 8GHz and Vcc_2 4GHz respectively by order of RADIO_EN signal or CON_EN signal V_RF is approximately 4 0V Base Unit or 3 6V Handset 73 KX TG5571BXM KX TGA550BXM ...

Страница 74: ...nal goes into the 5 8GHz Converter circuit 2 4GHz RX signal from 5 8GHz Converter circuit is passed through matching circuit and supplied to pin4 of IC701 then demodulated signal RX_DATA comes out from pin 16 At the same time RSSI Received Signal Strength Indicator outputs from the pin 14 Reference clock 13 824MHz from DSP block is supplied to pin 11 of IC701 VCC_2 4G supplies 2 5V regulated volta...

Страница 75: ...ircuit is supplied to pin 17 of IC801 and internal TX MIXER multiplies it by 3 4GHz Local signal from internal VCO module and up converts into 5 8GHz TX signal This 5 8GHz TX signal is output from pin 2 and goes into the 5 8GHz PA circuit 5 8GHz RX signal from 5 8GHz LNA circuit supplied to pin 5 of IC801 and internal RX MIXER multiplies it by 3 4GHz Local signal from internal VCO module and down ...

Страница 76: ...ircuit This block amplifies receiving 5 8GHz signal 5 8GHz RX signal from Antenna Switch circuit amplified by LNA Low Noise Amplifier Q871 and filtered by HPF FL821 and then supplied to 5 8GHz Converter circuit 76 KX TG5571BXM KX TGA550BXM ...

Страница 77: ...includes Switches for High frequency signals and controlled by ANT0 signal and ANT 1 signal from DSP DSP is checking RSSI Received Signal Strength Indicator signal and selects better condition Antenna from two antennas At the TX mode 5 8GHz TX signal from 5 8GHz PA block leads to selected Antenna terminal at the RX mode 5 8GHz RX signal from selected Antenna terminal leads to 5 8GHz LNA circuit Ha...

Страница 78: ..._DATA SYN_CLK SYN_LE1 RX_GAIN RX_EN TX_EN SHCTRL RF_RESET RSSI WP CLK DATA SI SO CS CLK RST LCD_LIGHT KEY_LIGHT KEYSTOROBE_A F KEYIN_1 5 Q231 CHARGE DETECT CHARGE Q361 Q221 Q362 Q363 CHARGE CONTROL RESET POWER DOWN REGULATOR MIC SP Headset Jack CN331 Q331 LED261 HEADSET DETECT Monitor SP 3 3V REGULATOR LCD KEYS RF part ANT X201 13 824MHz EEPROM IC246 FLASH MEMORY BATTERY OSC_IN PA_CONT TX_DATA RX_...

Страница 79: ...rcuit RF part Speaker Mic LED Key scan LCD Headset Initialize Note 1 The initializing time of the DSP chip is 20ms under normal conditions 17 1 2 RF part Mainly voice signal is modulated to RF or it goes the other way 17 1 3 EEPROM IC241 All setting data is stored ex ID code user setting Phonebook Caller ID data 17 1 4 Flash Memory IC246 Following information data is stored Ringer melody 79 KX TG5...

Страница 80: ...17 2 Power Supply Circuit Voltage is supplied separately to each block 80 KX TG5571BXM KX TGA550BXM ...

Страница 81: ...een CHARGE and CHARGE flows R231 Q231 pin41 of IC201 where the charge is detected Then IC201 calculates the battery consumption amount from the previous charge and it controls Q361 Q362 Q363 by pin79 of IC201 until charging is complete When charging is complete the control pattern is switched to Trickle charging form from Operational charging form 17 4 Ringer and Handset SP Phone 81 KX TG5571BXM K...

Страница 82: ...wer for the microphone is supplied from DSP 91 and the power is turned OFF on standby 17 6 Reception Signal The voice signal from the Base Unit is output to DSP 97 HSSPOUT This signal is led to the headset jack CN331 The signal through the headset jack and the other signal output from DSP 96 drives the speaker When the headset is inserted to the jack the voice signal is cut at the jack so the soun...

Страница 83: ...aced on the Base Unit Then it changes to Trickle charge to prevent from overcharging Charging form Q4 detects the ON HOOK state Handset is placed on Base Unit then Q5 turns ON and LED1 lights up Q2 and Q3 regulate the charge current The route for this is as follows DC pin of CN1 D1 Q30 L30 D2 CHARGE pad Handset CHARGE pad Q2 R4 R5 R9 and R10 DC pin of CN1 83 KX TG5571BXM KX TGA550BXM ...

Страница 84: ...19 SIGNAL ROUTE Each signal route is as follows 84 KX TG5571BXM KX TGA550BXM ...

Страница 85: ...Each signal route is as follows RF part signal route 85 KX TG5571BXM KX TGA550BXM ...

Страница 86: ... D I Normal Reset 55 Power Down D I Normal Power Down 56 FLASH_RST High Middle Low 57 TX_OUT D O High Low 58 PA_CONT D O Low Power High Power 59 FLASH_SO High Middle Low 60 FLASH_SI High Middle Low 61 FLASH_CS High Middle Low PIN Description I O High High_Z Low 62 BMCCLK D O High Low 63 RXEN D O Active Off 64 TXEN D O Active Off 65 RXGAIN D O High Low 66 RXI D I High Low 67 CHG_LED D I O Off On 68...

Страница 87: ... GND GND 51 VCC VCC VCC 52 LCD_RESET D O Normal Reset 53 FLASH_CLK D O 54 ANT_LED1 D O On Off 55 ANT_LED2 D O On Off 56 ANT_LED3 D O On Off 57 LCD_BL D O On Off 58 LCD_CS D O High Low 59 NC D O Low 60 LCD_RD AO D O High Low 61 LCD_PWR _CTRL D O High Low 62 STB_E D O Not Active PIN Description I O High High_Z Low 63 STB_D D O Not Active 64 STB_C D O Not Active 65 STB_B D O Not Active 66 STB_A D O N...

Страница 88: ...22 EXPLANATION OF IC TERMINALS RF PART 22 1 IC701 88 KX TG5571BXM KX TGA550BXM ...

Страница 89: ...22 2 IC801 Backside Terminal GND 89 KX TG5571BXM KX TGA550BXM ...

Страница 90: ...22 3 IC851 Backside Terminal GND 90 KX TG5571BXM KX TGA550BXM ...

Страница 91: ...pecific Gravity 0 82 Type RMA lower residue non cleaning type Note See ABOUT LEAD FREE SOLDER PbF Pb free P 4 23 2 FLAT PACKAGE IC REMOVAL PROCEDURE 1 Put plenty of solder on the IC pins so that the pins can be completely covered Note If the IC pins are not soldered enough you may give pressure to the P C board when cutting the pins with a cutter 2 Make a few cuts into the joint between the IC and...

Страница 92: ...the corresponding soldering foil 2 Apply flux to all pins of the FLAT PACKAGE IC 3 Solder the pins sliding the soldering iron in the direction of the arrow 23 4 BRIDGE MODIFICATION PROCEDURE 1 Lightly resolder the bridged portion 2 Remove the remaining solder along the pins using a soldering iron as shown in the figure below 92 KX TG5571BXM KX TGA550BXM ...

Страница 93: ...24 CABINET AND ELECTRICAL PARTS BASE UNIT 93 KX TG5571BXM KX TGA550BXM ...

Страница 94: ...25 CABINET AND ELECTRICAL PARTS HANDSET 94 KX TG5571BXM KX TGA550BXM ...

Страница 95: ...26 CABINET AND ELECTRICAL PARTS CHARGER UNIT 95 KX TG5571BXM KX TGA550BXM ...

Страница 96: ...27 ACCESSORIES AND PACKING MATERIALS 27 1 KX TG5571BXM 96 KX TG5571BXM KX TGA550BXM ...

Страница 97: ...27 2 KX TGA550BXM Optional Set 97 KX TG5571BXM KX TGA550BXM ...

Страница 98: ...28 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 28 1 Base Unit 28 2 Handset 98 KX TG5571BXM KX TGA550BXM ...

Страница 99: ...28 3 Charger Unit 99 KX TG5571BXM KX TGA550BXM ...

Страница 100: ...BS HB 12 PQHR11103Z OPTIC CONDUCTIVE PARTS LED LENS CHARGE PS HB 13 PQSX10287Z KEYBOARD SWITCH TAM 14 PQSX10286X KEYBOARD SWITCH DIAL 15 PQMG10025Z RUBBER PARTS MIC 16 PQYF10602Y1 CABINET COVER PS HB 17 PQGT18137Z NAME PLATE 29 1 2 Main P C Board Parts Note 1 When you have replaced IC501 or IC601 adjust X501 Refer to Check and Adjust X501 Base Unit Frequency P 51 Ref No Part No Part Name Descripti...

Страница 101: ...0 1 R506 ERJ2GEJ121 120 R521 ERJ2GEJ182 1 8K R522 ERJ2GEJ151 150 R523 ERJ2GEJ393X 39K Ref No Part No Part Name Description Remarks R524 ERJ2GEJ561 560 R525 ERJ2GEJ681 680 R533 ERJ2GEJ472X 4 7K R535 ERJ2GEJ102 1K R536 ERJ2GEJ222 2 2K R673 ERJ2GEJ681 680 R675 ERJ2GEJ681 680 R677 ERJ2GEJ221 220 R679 ERJ2GEJ821 820 R680 ERJ2GEJ681 680 R681 ERJ2GEJ221 220 R701 ERJ2RKF103X 10K R724 ERJ2GE0R00 0 R732 ERJ...

Страница 102: ...C804 ECJ0EC1H150J 15P C806 ECUE1H100DCQ 10P S Ref No Part No Part Name Description Remarks C809 ECUE1H102KBQ 0 001 S C811 ECUE1H2R0CCQ 2P C821 ECUE1H100DCQ 10P S C827 ECJ0EC1H050C 5P C832 F1G1H221A541 220P C833 ECUE1H101JCQ 100P S C834 ECJ0EB1C103K 0 01 C835 ECJ0EB1H471K 470P C836 ECUV1A105KBV 1 C837 ECUE1H101JCQ 100P S C842 ECUV1A105KBV 1 C843 ECUV1A474KBV 0 47 C844 ECUE1H2R0CCQ 2P C851 ECUE1H101...

Страница 103: ... D223 MA111 DIODE SI S D312 MA8047 DIODE SI S D313 MA8047 DIODE SI S D323 MA8047 DIODE SI S D324 MA8047 DIODE SI S D326 MA8047 DIODE SI S D327 MA8047 DIODE SI S D351 B0JCMD000010 DIODE SI S D352 B0JCMD000010 DIODE SI S D353 B0JCMD000010 DIODE SI S D354 B0JCMD000010 DIODE SI S Ref No Part No Part Name Description Remarks D363 MA132WK DIODE SI S LED251 B3ACB0000115 LED LED252 B3ACB0000115 LED LED253...

Страница 104: ...P S C714 ECUE1H102KBQ 0 001 S Ref No Part No Part Name Description Remarks C716 ECUE1H2R0CCQ 2P C722 ECUE1H2R0CCQ 2P C725 ECJ0EC1H050C 5P C731 ECJ0EB1C103K 0 01 C732 ECUE1H102KBQ 0 001 S C733 ECUE1H102KBQ 0 001 S C734 ECUE1H102KBQ 0 001 S C735 F1G1A1040003 0 1 C737 ECUE1H102KBQ 0 001 S C741 ECJ0EB1H222K 0 0022 C742 ECJ0EB1C103K 0 01 C743 F1G1H221A541 220P C745 ECUE1H101JCQ 100P S C746 ECUE1H101JCQ...

Страница 105: ...34 ECUV1H102KBV 0 001 C35 ECUV1A105KBV 1 C36 F2A1E2210029 220 OTHERS E201 PQJT10200Z CHARGE TERMINAL E202 PQHG10584Z SPACER 29 4 Accessories and Packing Materials Note 1 You can download and refer to the Operating Instructions Instruction book on TSN Server 29 4 1 KX TG5571BXM Ref No Part No Part Name Description Remarks A1 PQLV1BXY AC ADAPTOR A2 PQJA10075Z CORD TELEPHONE A3 PQJA10165Z CORD AUDIO ...

Страница 106: ...Memo 106 KX TG5571BXM KX TGA550BXM ...

Страница 107: ...set SCHEMATIC DIAGRAM HANDSET_MAIN Notes 1 DC voltage measurements are taken with an oscilloscope or a tester with a ground 2 The schematic diagrams and circuit board may be modified at any time with the development of new technology 30 3 Charger Unit SCHEMATIC DIAGRAM CHARGER UNIT Notes 1 DC voltage measurements are taken with voltmeter from the negative voltage line 2 This schematic diagram may ...

Страница 108: ...5 C120 K5600P C601 K0 1 C525 K0 1 C521C3P K0 01 C551 C522 K0 1 100K RA500 2 4 6 8 7 5 3 1 C365 K0 01 C524 K0 1 RA501 4 7K 7 5 3 1 2 4 6 8 C677 NC C679 NC C675 NC KIN1 GND KIN2 TAM CDL SPP C471 NC SPN 5 1V D471 C472 NC 5 1V D472 R473 1 R474 1 C458 K0 022 2 2K R460 C457 K0 022 2 2K R459 V_RF VPA R668 NC R670 NC R672 NC R669 NC R671 NC C459 K0 015 GND C680 NC C681 NC R680 680 R681 220 S661 NC 4 3 2 1...

Страница 109: ...R175 560 R160 NC R168 0 NC C160 NC R156 NC Q156 NC R157 R133 NC C331 K0 47 NC SA102 SA101 NC D111 NC R110 10u 6 3V C373 NC R151 NC D131 REG_3 3V 1 NC 2 RESET 3 VDET 4 VIN 5 VOUT 6 NC 7 GND 8 Cd Q142 47K R342 12K R340 Q340 1K R341 R343 NC NC Q143 CN301 DC JACK 1 DC 2 DC R176 100 22u 6 3V C176 C166 10u 16V C303 K0 01 10u 25V C161 Q141 C341 330u 6 3V NC C110 NC D110 R308 120 R303 220 C306 100u 25V R3...

Страница 110: ...2 K470P C835 R834 3 3K R832 5 6K R873 120 C827 C5P R872 47K C876 C1P NC L826 L873 2 2nH K1000P C854 K1000P C809 R809 22K J22P C802 J15P C804 C807 NC NC R808 C890 J100P C895 J100P C871 C1P C8741 5nH C857 C0 5P C2P C811 D10P C821 C852 K0 01 IC851 1 VCC2 2 VCC3 3 GND 4 GND 5 PAOUT 6 TX 7 SW1 8 SW2 9 ANT1 10 GND 11 GND 12 ANT2 13 SW3 14 SW4 15 RX 16 GND 17 PACTL 18 GND 19 PAIN 20 GN D 21 VCC0 22 GN D ...

Страница 111: ... 28 SYN_CLK 29 SYN_EN 30 SYN_DATA 31 SYN_OUT 32 VCC_PA TX_DATA D10P C747 K1000P C734 SHCTRL OSC_IN K1000P C714 NC C703 330 R742 K1000P C737 1uH 1005 L782 NC C766 RADIO_EN C701 4 7uF 2125 SYN_CLK K470P C752 TX_EN RF_RESET J120P C782 NC C742 1K R744 GND RX_GAIN J100P C833 IC761 2 5V_REG 1 VIN 2 VSS 3 CE 4 NC 5 VOUT 1K R752 C763 K0 47 1608 C2P C844 ANT0 PA_CONT CON_EN NC C769 NC C768 B0 2P C859 B0 2P...

Страница 112: ...FLS CN901 1 SP_LED 2 KEYS_A 3 KEYS_B 4 KEYS_C 5 KEYS_D 6 KEYS_E 7 KEYS_F 8 KEYIN6 9 KEYIN5 10 KEYIN4 11 KEYIN3 12 KEYIN2 13 KEYIN1 14 INT_LED 15 CHG_LED 16 INUSE_LED 17 ANS_LED 18 MSG_LED 19 2APVCC 20 COM1 21 COM2 22 SEG3 23 SEG4 24 SEG5 25 SEG6 26 SEG7 27 SEG8 28 SEG9 29 SEG10 30 SEG11 31 SEG12 32 NC LED905 RED SP PHONE MSG_LED ANS_LED INUSE_LED CHG_LED INT_LED SP_LED 2APVCC KX TG5571 SCHEMATIC D...

Страница 113: ...Memo 113 KX TG5571BXM KX TGA550BXM ...

Страница 114: ... C2 5 C1 RADIO_EN CON_EN C246 K0 1 TALK SYN_CLK OSC_IN NC C219 S251 NAVI_KEY 1 UP 2 MENU 3 BACK 6 DOWN 5 COM 4 NEXT HOLD LEFT SYN_DATA 8 FLASH NC R246 TE Q251 PA_CONT 1 0uF C262 OFF K0 1 C386 220 R262 RIGHT NC C382 6 2 S 8821 1 VIN 2 C 3 C 4 ON OFF 5 GND 6 VOUT K0 1 C261 LED256 LED255 Amber RA255 220 2 4 6 8 7 5 3 1 LED257 K0 47u 16V C271 K1 0u C277 C282 J120P J120P C281 CN271 22 C86 21 V0 20 V4 1...

Страница 115: ... KIN_3 76 KIN_4 77 KIN_5 78 LED_CNT 79 CHG_CTRL 80 EEPROM_SCL 81 EEPROM_SDA 82 UART_TX 83 UART_RX 84 EEPROM_WP 85 GND 86 PDN 87 IBAT 88 VREF 89 MIP 90 MIN 91 MIC_PWR 92 GNDA 93 VCCA 94 HEADSET_MIN 95 HEADSET_DET 96 HSSPOUTN 97 HSSPOUTP 98 VCCPA 99 SPOUTN 100 GNDPA NC C312 BATTM C226 K0 1 MICM NC C313 C215 K0 1 CI TX UART K0 1 C241 TDO 3 2V RESET OUT 1 VDD 2 NC 3 GND 4 C209 NC D312 M4 7V 10K R234 K...

Страница 116: ...C832 K470P C835 R834 3 3K R832 5 6K R873 120 C827 C5P R872 47K C876 C1P NC L826 L873 2 2nH K1000P C854 K1000P C809 R809 22K J22P C802 J15P C804 C807 NC NC R808 C856 K1000P C871 C1P C874 1 5nH C857 C0 5P C2P C811 D10P C821 C852 K0 01 IC851 1 VCC2 2 VCC3 3 GND 4 GND 5 PAOUT 6 TX 7 SW1 8 SW2 9 ANT1 10 GND 11 GND 12 ANT2 13 SW3 14 SW4 15 RX 16 GND 17 PACTL 18 GND 19 PAIN 20 GND 21 VCC0 22 GND 23 GND 2...

Страница 117: ...2A RXGAIN PA_RAMP TXMOD SYN_CLK SYN_EN SYN_DATA SYN_OUT VCC_PA TX_DATA D10P C747 K1000P C734 SHCTRL OSC_IN K1000P C714 NC C703 330 R742 K1000P C737 NC C766 RADIO_EN C701 4 7uF 2125 SYN_CLK K470P C752 TX_EN RF_RESET J120P C782 K0 01 C742 1K R744 GND RX_GAIN J100P C833 IC761 2 5V_REG 1 NVI 2 VSS 3 CE 4 NC 5 VOUT 1K R752 C763 K0 47 1608 C2P C844 PA_CONT CON_EN NC C769 NC C768 B0 2P C859 B0 2P C858 NC...

Страница 118: ...0k R4 12 R10 15 R6 820 R9 15 CN1 1 DC 2 DC D1 SS14 R31 220 Q3 0 CPH3314 C33 K0 1 C34 K1000P D31 SS14 R30 120 IC30 DCDC CE GND VOUT EXT VIN K1 0 C35 R32 220 C32 K0 01 L30 68uH R33 82k R34 12k R11 0 R12 0 R13 0 Q3 Q2 Q5 Q4 C31 330u25V C36 220u25V R7 0 CP CM DCP DCM D30 NC L2 NC L1 NC 8 0V CONVERTOR CHARGE PAD DC JACK KX TG5571BXM KX TGA550BXM 118 ...

Страница 119: ...C612 R682 R594 C681 C686 C685 C682 C504 C684 C683 C687 C503 C680 C663 C381 C342 C332 C331 C307 C304 R300 C421 R421 RST R422 R524 R525 R522 R375 R374 R373 R371 R303 C308 R301 R365 R364 C303 R340 R341 R304 R305 R372 R343 C371 R361 C551 C524 C522 C525 C509 C508 R509 R523 R521 C521 C422 C423 R423 R506 80 51 1 30 81 100 50 31 C611 R680 R460 R454 R459 R601 C601 C603 R473 R171 C172 C142 R112 R121 C121 C1...

Страница 120: ...P11294Z KIN4 RXI GND DVCC VCC BCK SPN CP CM DCM2 DCM DCP DCP2 L1R L1T MIC MIC MIP MIN JC JG URX UTX RED INUSE KI2 CHG KS_D KSC KI1 2APVCC JS R Y G B JI JO A KX TG5571 CIRCUIT BOARD Base Unit_Main Flow Solder Side View KX TG5571BXM KX TGA550BXM 120 ...

Страница 121: ...ED905 SP_LED PQUP11299Z A PbF FLS MUTE LED904 MSG_LED L5DC01 SP1 SP2 4 7 5 8 0 6 1 1 12 1 CN901 32 2 3 9 CONF INT HOLD SP LED907 LED909 INT_LED MEMO DOWN UP CHK ERASE ANS REC STOP AUTO MSG VM LEFT RIGHT 2APVCC KX TG5571 CIRCUIT BOARD Base Unit_Operation Component View KX TG5571BXM KX TGA550BXM 121 ...

Страница 122: ...38 2 Flow Solder Side View PQUP11299 PbF DON T ATTACH LCD HOLDER ON THIS SIDE A KX TG5571 CIRCUIT BOARD Base Unit_Operation Flow Solder Side View KX TG5571BXM KX TGA550BXM 122 ...

Страница 123: ...8 C837 C743 C742 C731 C732 C706 C705 C722 C723 L715 C712 L724 C725 R724 C717 C716 C714 L711 C711 C713 C804 R732 R752 R751 C750 C752 C751 C749 C747 R747 C748 C708 C707 C762 R733 C733 C734 C745 C746 C737 C736 R735 C735 C833 C773 R834 C835 R832 C832 C807 C802 C821 C811 C801 C874 C895 C890 C891 C896 C871 C872 C873 R872 R873 C876 C875 R856 C856 C854 C852 C857 L822 L826 L874 L873 L871 C827 C806 C851 FL8...

Страница 124: ...Memo KX TG5571BXM KX TGA550BXM 124 ...

Страница 125: ...4 C316 R312 C221 C222 R222 R201 C201 C215 C212 C214 C202 C332 R331 R261 R262 R263 R242 C322 R227C227 R340 C340 R317 R205 PDN C244 R243 C243 R226 C226 R209 R333 R334 C336 C377 C333 C303 C305 C383 C275 C274 C278 C277 R286 C284 C283 C279 C286 C371 C381 C211 L326 D326 L327 D327 D313 D312 D351 L351 L352 D353 X201 MICM MICP Q243 Q261 Q262 Q231 Q251 D363 Q221 RA251 Q331 Q363 Q362 Q361 CHG1 MIC CHG2 SPP P...

Страница 126: ...71 C273 C276 TALK S251 OFF MUTE SP LEFT 1 2 3 4 5 6 7 8 9 0 MIC HOLD FLASH RIGHT LED255 A PbF KX TGA550R PQUP11292Z LED257 LED256 LED253 LED252 LED251 LED254 KX TGA550 CIRCUIT BOARD Handset_Main Flow Solder Side View KX TG5571BXM KX TGA550BXM 126 ...

Страница 127: ...C837 C743 C742 C731 C732 C706 C705 C722 C723 L715 C712 L724 C725 R724 C717 C716 C714 L711 C711 C713 C804 R732 R752 R751 C750 C752 C751 C749 C747 R747 C748 C708 C707 C762 R733 C733 C734 C745 C746 C737 C736 R735 C735 C833 C773 R834 C835 R832 C832 C807 C802 C821 C811 C801 C874 C895 C890 C891 C896 C871 C872 C873 R872 R873 C876 C875 R856 C856 C854 C852 C857 L822 L826 L874 L873 L871 C827 C806 C851 FL811...

Страница 128: ...1 Q5 Q3 LED1 E E E E Q5 Q2 L1 L2 CN1 L30 C36 C31 A 42 2 Flow Solder Side View CIRCUIT BOARD Charger Flow Solder Side View R32 C33 DCM DCP C32 C35 C34 R33 R34 PbF PQUP11327Z R30 R11 R12 R13 R8 R4 CM WHITE RED CP CHG CHG R5 R9 R10 R3 R6 R7 D30 D2 D1 R31 3 E 1 4 5 R1 Q30 D31 IC30 A 128 KX TG5571BXM KX TGA550BXM I N N KXTG5571BXM KXTGA550BXM ...

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