Panasonic KX-TG5771BXS Service Manual Download Page 23

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KX-TG5771BXS/KX-TGA570BXS

4.8.

Circuit Operation (Handset)

4.8.1.

Construction

The circuit mainly consists of DSP and RF part as shown in the block diagram.

4.8.1.1.

DSP: IC201

Function

• Battery Low, Power down detect circuit
• Ringer Generation
• Interface circuit

RF part, Speaker, Mic, LED, Key scan, LCD, Headset

Initialize

Note:

(*1) The initializing time of the DSP chip is 20 ms under normal conditions.

4.8.1.2.

RF part

Mainly voice signal is modulated to RF, or it goes the other way.

4.8.1.3.

EEPROM: IC241

All setting data is stored.
ex: ID code, user setting (Phonebook, Caller ID data)

4.8.1.4.

FLASH MEMORY: IC246

Following information data is stored.

•

Ringer melody

Summary of Contents for KX-TG5771BXS

Page 1: ...ights reserved Unauthorized copying and distribu tion is a violation of law ORDER NO KM40607124CE Telephone Equipment KX TG5771BXS KX TGA570BXS Expandable Digital Cordless Answering System Silver Version for Asia Middle Near East and Other areas ...

Page 2: ...2 KX TG5771BXS KX TGA570BXS ...

Page 3: ...eception 71 10 5 Check Caller ID 71 10 6 How to Replace the Flat Package IC 72 10 7 How to Replace the LLP Leadless Leadframe Package IC 74 11 Disassembly and Assembly Instructions 76 11 1 Disassembly Instructions 76 11 2 Fix the LCD and the Receiver Guide to the Main P C Board Handset 79 12 Measurements and Adjustments 80 12 1 Things to Do after Replacing IC 80 12 2 Base Unit Reference Drawing 81...

Page 4: ...andard solder or solder that con tains lead We will use PbF solder when discussing the lead free solder used in our manufacturing process which is made from Tin Sn Silver Ag and Copper Cu This model and others like it manufactured using lead free solder will have PbF stamped on the PCB For service and repair work we suggest using the same type of solder Caution PbF solder has a melting point that ...

Page 5: ...fic instructions for the melting points of their products and any precautions for using their product with other materi als The following lead free PbF solder wire sizes are recommended for service of this product 0 3 mm 0 6 mm and 1 0 mm 2 2 2 How to Recognize that Pb Free Solder is Used Example Handset P C B Component View Note The location of the PbF mark is subject to change without notice CN3...

Page 6: ...6 KX TG5771BXS KX TGA570BXS 3 Specifications ...

Page 7: ...ncies of the Base Unit and Handset are shared in 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 10 ms By this slot system simultaneous air link and communication between 4 Handsets and the Base Unit can be realized One communication between Handset and...

Page 8: ...ssible to perform four duplex communications simultaneously Up to eight Handsets can be registered In 1 slot 1 25 ms the 10 ms of voice data is transmitted Each slot makes every frame frequency hop 100 hops 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 Hands...

Page 9: ...then enter to DSP IC201 The DSP 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 4 GHz The 2 4 GHz signal is up converted to 5 8 ...

Page 10: ...10 KX TG5771BXS KX TGA570BXS 4 2 Explanation of Link Data Communication 4 2 1 Calling 4 2 2 To Terminate Communication 4 2 3 Ringing ...

Page 11: ... CONVERTOR SPOUTP SPOUTN MIN INUSE DETECT1 RECEIVE AMP DCIN1 IC331 RESET POWER_DOWN VCCIN VCC VCCA VCCPA CHARGE CURRENT CHG_CTL INT_1 V_RF INT_1 5 VCC IC601 FLASH MEMORY LCD KEYS Operational P C Board IC300 Q300 R131 R132 Q171 R371 R373 RSSI SHCTRL RADIO_EN TX_EN RX_EN LO_EN SYN_DATA SYN_CLK OSC_IN SYN_LE2 TXDATA V_RF VPA Q535 SI SO CS COM1 COM2 SEG3 12 OSC_IN KEY1 6 KEYA F RXDATA MIP SYN_LE1 SYN_...

Page 12: ...rface VCC 2 4GHz Mod Demod Circuit 2 4GHz 2 4GHz FL811 FL891 FL881 IC851 5 8GHz Power Amp 5 8GHz LNA and Antenna Switch Circuit 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 5 8GHz FL821 KX TG5771 BLOCK DIAGRAM B...

Page 13: ...TMF detection is performed during Record Play 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 and Call Waiting CID demodulation The DSP implements monitor and...

Page 14: ... KX TGA570BXS 4 5 3 Power Supply Circuit Function The power supply voltage from AC adaptor is converted to the desired voltage of each block Circuit Operation Q300 and IC300 4 0 V DCDC Converter IC331 3 3 V Regulator ...

Page 15: ...is supplied to the charge circuits Main charge 130 220 mA at the Battery of maximum 7 hours is started soon after the Handset is placed on the Base Unit Then it changes to Trickle charge to prevent from overcharging Q361 and Q362 detect the ON HOOK state Handset is placed on Base Unit ...

Page 16: ...rporates an AC adaptor Circuit 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 0 V or more in the circuit voltage diagram Note 1 The initializing time of the DSP chip is 28 ms under normal conditions ...

Page 17: ... 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 connected as to cut the DC loop current and to cut the voice signal The unit is consequently in an on hook condition Pulse Di...

Page 18: ...ransmitting status Circuit Operation The voltage of pin 90 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 2 V 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 Se...

Page 19: ...ected in parallel is on hook or off hook by detecting changes in the T R voltage Circuit Operation Parallel connection detection when on hook When on hook the voltage is monitored at pin 86 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 the v...

Page 20: ...er method of FSK or DTMF 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 sig nal The data is sent in turn first...

Page 21: ...DIO_EN CON_EN SYN_LE2 SYN_OUT SYN_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 R376 R379 Q362 Q363 CHARGE CONTROL CHARGE CURRENT POWER DOWN MIC SP Headset Jack CN331 Q331 LED261 HEADSET DETECT Monitor SP LCD KEYS RF part ANT X201 13 824MHz EEPROM IC246 FLASH MEMORY OSC_IN PA_CONT TX_DATA RX_DATA Q261 Q262 5 ...

Page 22: ...ace VCC 2 4GHz Mod Demod Circuit 2 4GHz 2 4GHz FL811 IC851 5 8GHz Power Amp 5 8GHz LNA and Antenna Switch Circuit V_PA V_RF RADIO_EN CON_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 5 8GHz FL821 KX TGA570 BLOCK DIAGRAM Handset_RF Pa...

Page 23: ...inger Generation Interface circuit RF part Speaker Mic LED Key scan LCD Headset Initialize Note 1 The initializing time of the DSP chip is 20 ms under normal conditions 4 8 1 2 RF part Mainly voice signal is modulated to RF or it goes the other way 4 8 1 3 EEPROM IC241 All setting data is stored ex ID code user setting Phonebook Caller ID data 4 8 1 4 FLASH MEMORY IC246 Following information data ...

Page 24: ...24 KX TG5771BXS KX TGA570BXS 4 8 2 Power Supply Circuit Voltage is supplied separately to each block ...

Page 25: ...66 and D361 The voltage between CHARGE and CHARGE flows R231 Q231 pin 41 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 pin 79 of IC201 until charging is complete When charging is complete the control pattern is switched to Trickle charging form from Operational charging form 4 8 4 Ringer and Han...

Page 26: ...et is input to DSP 94 Also the power for the microphone is supplied from DSP 78 and the power is turned OFF on standby 4 8 6 Reception Signal The voice signal from the Base Unit is output to DSP 97 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 c...

Page 27: ...peration RF Part General Description 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 ...

Page 28: ...t 4 0 V at Base Unit or 3 1 V at Handset is supplied to the Power amplifier in 5 8 GHz PA circuit IC841 is 3 0 V Base Unit or 2 8 V Handset Regulators and IC761 is a 2 5 V Regulator They output Vcc_5 8 GHz and Vcc_2 4 GHz respectively by order of RADIO_EN signal or CON_EN signal V_RF is approximately 4 0 V Base Unit or 3 1 V Handset ...

Page 29: ... is passed through matching circuit and supplied to pin 4 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 13 824 MHz from DSP block is supplied to pin 11 of IC701 VCC_2 4 G supplies 2 5 V regulated voltage Note The exposed GND_PLATE on the bottom of the IC701 supplies the circuit ground ...

Page 30: ...ignal from internal VCO module and up converts into 5 8 GHz TX signal This 5 8 GHz TX signal is output from pin 2 and goes into the 5 8 GHz PA circuit 5 8 GHz RX signal from 5 8 GHz LNA circuit supplied to pin 5 of IC801 and internal RX MIXER multiplies it by 3 4 GHz Local signal from internal VCO module and down converts into 2 4 GHz RX signal This 2 4 GHz RX signal is output from pin 15 and goes...

Page 31: ...erminal Note The exposed GND_PLATE on the bottom of the IC851 supplies the circuit ground s for the entire chip It is very important that a good solder connection is made between this GND_PLATE and the ground plane of the PCB underlying the IC851 Base Unit IC851 includes Switches for High frequency signals and controlled by ANT0 signal and ANT1 signal from DSP DSP is checking RSSI Received Signal ...

Page 32: ...ied to the charge circuits Main charge 130 220 mA at the Battery of maximum 7 hours is started soon after the Handset is placed on the Charger Unit Then it changes to Trickle charge to prevent from overcharging The route for this is as follows DC pin of CN1 R1 R3 CHARGE pad Handset CHARGE pad DC pin of CN1 ...

Page 33: ...33 KX TG5771BXS KX TGA570BXS 4 11 Signal Route Each signal route is as follows ...

Page 34: ...34 KX TG5771BXS KX TGA570BXS Each signal route is as follows RF part signal route ...

Page 35: ...35 KX TG5771BXS KX TGA570BXS 5 Location of Controls and Components 5 1 Controls 5 1 1 Base Unit ...

Page 36: ...36 KX TG5771BXS KX TGA570BXS 5 1 2 Handset 5 2 Displays 5 2 1 Base Unit Display Items 5 2 2 Handset Display Items ...

Page 37: ...37 KX TG5771BXS KX TGA570BXS 5 2 3 Handset Menu Icons ...

Page 38: ...lation Instructions 6 1 Setting up the Base Unit 6 1 1 Connecting the AC Adaptor and Telephone Line Cord 6 1 1 1 If you subscribe to a DSL service 6 2 Setting Up the Handset 6 2 1 Connecting the Charger 6 3 Battery Installation Replacement ...

Page 39: ...h 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 4 1 Battery Level 6 4 2 Panasonic Battery Performance ...

Page 40: ...40 KX TG5771BXS KX TGA570BXS 6 5 Expanding Your Phone System ...

Page 41: ...41 KX TG5771BXS KX TGA570BXS 7 Operation Instructions 7 1 Symbols Used in These Operating Instructions ...

Page 42: ...42 KX TG5771BXS KX TGA570BXS 7 2 Programmable Settings 7 2 1 Programming by Scrolling through the Display Menus ...

Page 43: ...43 KX TG5771BXS KX TGA570BXS ...

Page 44: ...44 KX TG5771BXS KX TGA570BXS 7 2 2 Programming Using the Direct Commands ...

Page 45: ...45 KX TG5771BXS KX TGA570BXS 7 3 Dial Lock For Service Hint If the current password is forgotten enter 726276642 and you will be able to go to step 3 ...

Page 46: ...46 KX TG5771BXS KX TGA570BXS 7 4 Error Messages ...

Page 47: ...47 KX TG5771BXS KX TGA570BXS 7 5 Troubleshooting ...

Page 48: ...48 KX TG5771BXS KX TGA570BXS ...

Page 49: ...49 KX TG5771BXS KX TGA570BXS ...

Page 50: ...8 Test Mode 8 1 Adjustment and Test Mode Flow Chart 8 1 1 Test Burst Mode for Base Unit Note 1 LCD displays the Channel number 2 Refer to Check Table for RF part P 67 and RX CW Test Mode for Handset P 55 for proper Handset settings ...

Page 51: ...KX TG5771BXS KX TGA570BXS 8 1 2 RX CW Test Mode for Base Unit Note 1 LCD displays the Channel number 2 Refer to Check Table for RF part P 67 and Test Burst Mode for Handset P 54 for proper Handset settings ...

Page 52: ...splays the number of selected power 3 Refer to Test Link Mode for Handset P 56 If can not proceed to the next step refer to Registering a Handset P 65 4 Refer to Check Table for RF part P 67 and Test Burst Mode for Handset P 54 for proper Handset settings 5 Display may vary according to the receiving sensitivity ...

Page 53: ...53 KX TG5771BXS KX TGA570BXS 8 1 4 Adjustment Mode for Base Unit Cross Reference Check and Adjust X501 Base Unit Frequency P 80 Note 1 This is an adjustment value hex ...

Page 54: ... TGA570BXS 8 1 5 Test Burst Mode for Handset Note 1 LCD displays the Channel number exception default CH00 1ch 2 Refer to Check Table for RF part P 67 and RX CW Test Mode for Base Unit P 51 for proper Base Unit settings ...

Page 55: ... TGA570BXS 8 1 6 RX CW Test Mode for Handset Note 1 LCD displays the Channel number exception default CH00 1ch 2 Refer to Check Table for RF part P 67 and Test Burst Mode for Base Unit P 50 for proper Base Unit settings ...

Page 56: ...e 1 LCD displays the Channel number exception default CH00 1ch 2 If can not proceed to the next step refer to Registering a Handset P 65 3 for factory use only 4 Refer to Check Table for RF part P 67 and Test Link Mode for Base Unit P 52 for proper Base Unit settings ...

Page 57: ... KX TGA570BXS 8 1 8 Adjustment Mode for Handset Cross Reference 1 Adjust Battery Low Detector Voltage Handset P 80 Note 2 These are the default values 3 These values may not be fixed depending on the battery strength ...

Page 58: ...rase recorded Voice messages stored Phone numbers Caller list and etc This operation should not be performed for a usual repair 9 1 1 Base Unit Note 1 Telephone line must be connected 9 1 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 ...

Page 59: ... phone Reception P 62 Check Battery Charge P 63 Check Link P 64 Check the RF part P 65 Check Handset Transmission P 71 Check Handset Reception P 71 Check Caller ID P 71 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 Ch...

Page 60: ...le Note Flash Memory is IC601 DSP is IC501 Display Symptom Remedy E1 The initialization was tried but it could 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...

Page 61: ...nected telephone is OFF HOOK the line isn t disconnected D How to change the VOX level It makes easier to detect a small voice caller by raising the sensitivity of VOX level Therefore the recording of TAM is not turned off during a detection Cross Reference Signal Route P 33 Telephone Line Interface P 17 Auto Disconnect circuit P 18 Parallel Connection Detect Circuit P 19 Note Flash Memory is IC60...

Page 62: ... Memory is IC601 DSP is IC501 10 2 3 Check Sp phone Transmission Cross Reference Signal Route P 33 Telephone Line Interface P 17 Note Flash Memory is IC601 DSP is IC501 10 2 4 Check Sp phone Reception Cross Reference Telephone Line Interface P 17 Signal Route P 33 Note Flash Memory is IC601 DSP is IC501 ...

Page 63: ...63 KX TG5771BXS KX TGA570BXS 10 2 5 Check Battery Charge Note Flash Memory is IC601 DSP is IC501 1 Refer to Specifications P 6 for part number and supply voltage of AC adaptor ...

Page 64: ...64 KX TG5771BXS KX TGA570BXS 10 2 6 Check Link Note Flash Memory is IC601 DSP is IC501 1 Refer to Finding out the Defective part P 65 Cross Reference Check the RF part P 65 ...

Page 65: ... the RF part 10 2 7 1 Finding out the Defective part After All the Checkings or Repairing 1 Re register the checked Handset to the checked Base Unit and Regular HS to Regular BU Note 1 HS Handset 2 BU Base Unit 10 2 7 1 1 Registering a Handset ...

Page 66: ...66 KX TG5771BXS KX TGA570BXS 10 2 7 1 2 Deregistering a Handset 10 2 8 RF Check Flowchart Each item 1 6 of RF Check Flowchart corresponds to Check Table for RF part P 67 Please refer to the each item ...

Page 67: ...CW Mode 4 HS BU to be checked Mode Test Burst Mode 1 1 Place the Regular HS about 15 cm away from the BU 2 Confirm that RSSI of the Regular HS is approximately 2 V by Oscilloscope 5 1 Place the HS about 15 cm away from the Regular BU 2 Confirm that RSSI of the Regular BU is approximately 2 V by Oscilloscope 6 5 RX Sensitivity confirmation Regular HS BU Mode Test Burst Mode 1 HS BU to be checked Mo...

Page 68: ...n HS and BU Link OK TX Power of the HS is OK No Link TX Power of the HS is NG Range Confirmation RX TEST RX sensitivity check HS BU Mode Test Link Mode 1 1 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 20 m between HS and BU Link OK RX Sensitivity of the B...

Page 69: ...69 KX TG5771BXS KX TGA570BXS 10 2 9 1 RF DSP Interface Signal Wave Form Test Burst Mode ...

Page 70: ...70 KX TG5771BXS KX TGA570BXS Test Burst Mode ...

Page 71: ...ng the RF part Refer to Check the RF part P 65 10 5 Check Caller ID Cross Reference Telephone Line Interface P 17 Calling Line Identification Caller ID P 20 Note Make sure the format of the Caller ID or Call Waiting Caller ID service of the Telephone company that the customer sub scribed to Also we recommend to confirm that the customer is really a subscriber of the service ...

Page 72: ...the PCB foil Flux Recommended Flux Specific Gravity 0 82 Type RMA lower residue non cleaning type Note See About Lead Free Solder Pbf Pb free P 4 10 6 2 How to Remove the IC 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...

Page 73: ... the IC setting with 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 10 6 4 How to Remove a Solder Bridge 1 Lightly resolder the bridged portion 2 Remove the remaining solder along the pins using a soldering iron as shown in the figure below ...

Page 74: ... efficiently choose the right sized nozzle of the hot air desoldering tool that matches the IC package Be careful about the temperature of the hot air desoldering tool not to damage the PCB and or IC 10 7 3 How to Remove the IC 1 Heat the IC with a hot air desoldering tool through the P C Board 2 Pick up the IC with tweezers etc when the solder is melted completely Note Be careful not to touch the...

Page 75: ...IC the positioning should be done very carefully 3 Heat the IC with a hot air desoldering tool through the P C Board until the solder on IC bottom is melted Note Be sure to place it precisely controlling the air volume of the hot air desoldering tool 4 After soldering confirm there are no short and open circuits with visual inspection 10 7 5 How to Remove a Solder Bridge When a Solder Bridge is fo...

Page 76: ...76 KX TG5771BXS KX TGA570BXS 11 Disassembly and Assembly Instructions 11 1 Disassembly Instructions 11 1 1 Base Unit ...

Page 77: ...77 KX TG5771BXS KX TGA570BXS 11 1 2 Handset ...

Page 78: ...78 KX TG5771BXS KX TGA570BXS 11 1 3 Charger Unit ...

Page 79: ...79 KX TG5771BXS KX TGA570BXS 11 2 Fix the LCD and the Receiver Guide to the Main P C Board Handset ...

Page 80: ...0 Hz adjust to Adjustment tolelance 30 Hz by pressing or key Adjustment Tolerance 13 824 MHz 30 Hz 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 for Handset P 57 12 1 2 Adjust Battery Low Detector Voltage Handset After Handset s DSP IC201 or EEPROM IC241 replacement Re writing Battery Low voltage to EE...

Page 81: ...747 R809 R824 R823 R822 R864 R724 R732 R744 R701 R742 R812 R863 R862 R865 R861 R833 R832 R834 L821 R814 R873 L871 R751 R752 R735 R733 C752 C749 C750 C736 C737 C746 C745 C734 C733 C732 C731 C751 C768 C761 C766 C841 C846 C842 C844 C845 C874 C873 C809 C713 C711 L711 L724 C707 C762 C708 C714 C837 C804 C801 C811 C824 C851 C852 C853 C862 C863 C864 C861 C865 C807 C802 C821 C725 C806 C712 C715 C716 C723 C...

Page 82: ...5 C306 C336 C333 C313 D312 D313 R378 R368 R241 R242 C242 C244 C354 C315 C243 C209 C241 R205 R207 R261 Q261 Q262 R206 C206 R209 C377 C316 R314 C379 R379 C303 C314 C226 R226 R312 R201 R225 R232 C202 C212 C215 C225 R227 C201 C211 C219 D326 D327 L326 SP L327 R246 R329 C246 R247 R263 R375 R374 R234 C371 C263 C264 C362 C361 C373 C262 C261 R331 R264 R324 R262 L332 L373 D373 Q373 L334 C322 C335 C321 C374 ...

Page 83: ...12 5769 510992 44 5798 050836 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 72...

Page 84: ...74 44 5798 052818 76 5826 592662 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...

Page 85: ...me with the development of new technology 13 1 2 Handset Schematic Diagram Handset_Main Notes 1 DC voltage measurements are taken with an oscilloscope or a tester with a ground 2 The schematic diagrams may be modified at any time with the development of new technology 13 1 3 Charger Unit Schematic Diagram Charger Unit Notes 1 DC voltage measurements are taken with voltmeter from the negative volta...

Page 86: ... XOUT 8 VDD 9 VCCIN 10 GND 11 Reset 12 FLASH_RST 13 FLASH_SO 14 FLASH_SI 15 FLASH_CS 16 NC 17 SYN_OUT 18 TX_DATA 19 PA_CONT 20 SYN_LE2 21 AC_DOWN_DET 22 RF_RST 29 SYN_CLK 30 SYN_DATA 31 RXEN 32 TXEN 33 RXGAIN 34 RXI 35 SEG12 36 SEG11 37 SEG10 38 SEG9 39 SEG8 40 SEG7 41 SEG6 42 SEG5 43 SEG4 44 SEG3 45 SP_LED 46 GND 47 VCC 54 KEY_STB_B 55 KEY_STB_A 56 LINE_SZ 57 RLY 58 BELL 59 NC 60 KEY_IN6 61 KEY_I...

Page 87: ...GE CHARGE C301 NC NC R300 NC R301 NC R305 NC R343 10k R145 NC R157 NC R156 DCP DCP2 DCM DCM2 L1T L1R C111 0 047 C112 0 047 16V 10u C166 Q141 1 2 3 33u L101 33u L102 K0 68 C113 Q156 NC 1 2 3 Q362 1 3 2 47k R362 NC R363 Q142 1 2 3 Q143 NC 1 2 3 C165 K0 047 C163 K4700P 50V C162 J100P C167 K0 22 K680P 50V C122 K680P 50V C121 K0 047 C184 C185 K0 018 NC C171 NC C174 NC C175 NC C177 NC C173 NC C183 NC C1...

Page 88: ...OUT 22 GND_ISO6 23 GND_ISO7 24 TRSW_IN 1 GND_ISO1 2 ANT1 3 GND_ISO2 J100P C833 18 R823 FL881 5 8GHz_LPF 2 1 4 3 B0 1P C871 K1 0 C857 NC R862 NC R812 3 3k R834 L871 3 3nH FL821 5 8GHz_BPF 1 2 3 4 C2P C873 K0 033 C809 L821 NC 5 8G_RF 4 GND_ISOL2 5 RX 6 VCC_LNA 7 REFIN 8 REFOUT 9 RXGAIN 10 CP_OUT 11 TV_IN 12 VARGND 13 PLL_BYP 14 VCC_PLL 15 2G4_OUT 16 GND_ISOL3 17 2G4_IN 18 VCC_TXRX 19 SYN_CLK 20 SYN_...

Page 89: ...C712 OSC_IN 330 R742 NC C841 D10P C747 VPA 2 4G_RF 1 TX 2 GND_ISO1 9 VCC_IF 3 GND_ISO2 4 RX 5 VCC_RF 6 VCC_IF2 7 TESTP 8 TESTN 10 XOUT 11 XIN 12 VCC_BIAS 13 REXT 14 RSSI 15 RSTN 16 RXDATA 17 TC_CTRL 18 VCC_DIG 19 VCC_PLL1A 20 VCC_PLL1B 21 TXEN 22 RXEN 23 VCC_PLL2B 24 VCC_PLL2A 25 RXGAIN 26 PA_RAMP 27 TXMOD 28 SYN_CLK 29 SYN_EN 30 SYN_DATA 31 SYN_OUT 32 VCC_PA 33 PADDLE_GND SYN_LE1 L724 NC C1 5P C7...

Page 90: ...901 NC A K LED904 RED A K LED905 RED A K LED907 RED A K CN901 1 SP_LED CN901 2 KEYS_A CN901 3 KEYS_B CN901 4 KEYS_C CN901 5 KEYS_D CN901 6 KEYS_E CN901 7 KEYS_F CN901 8 KEYIN6 CN901 9 KEYIN5 CN901 10 KEYIN4 CN901 11 KEYIN3 CN901 12 KEYIN2 CN901 13 KEYIN1 CN901 14 LINE1_LED CN901 15 LINE2_LED CN901 16 INUSE_LED CN901 17 ANS_LED CN901 18 MEG_LED CN901 19 2APVCC CN901 20 SEG12 CN901 21 SEG11 CN901 22...

Page 91: ...91 KX TG5771BXS KX TGA570BXS Memo ...

Page 92: ... 6 VOUT 330 RA251 1 2 3 45 6 7 8 4 8 1 5 9 2 6 SYA 3 7 0 OFF TALK RIGHT LEFT FLASH HOLD SP MENU PAUSE DOWN NEXT UP BACK IC246 FLASH 4M 1 2 RESET 3 WP 4 NC1 5 NC2 6 VCC 7 GND 8 NC3 9 NC4 10 NC5 11 CS 12 SCK 13 SI 14 SO 15 NC6 16 NC7 17 NC8 18 NC9 19 NC10 20 NC11 21 NC12 22 NC13 23 NC14 24 NC15 25 NC16 26 NC17 27 NC18 28 NC19 Q251 1 2 3 NC R264 CN271 19 V3 CN271 20 V4 CN271 18 V2 CN271 5 RES CN271 4...

Page 93: ...I 20 FL_CS 21 NC 22 SYN_OUT 29 SHCTRL 30 GND 31 VCC 32 SYN_LE1 33 SYN_CLK 34 SYN_DATA 35 RX_EN 36 TX_EN 37 RX_GAIN 38 RX_DATA 39 NC 40 NC 41 CHG_DET 42 NC 43 NC 44 NC 45 NC 46 NC 47 NC 54 ANT_L1 55 ANT_L2 56 ANT_L3 57 LCD_BL 58 LCD_CS 59 NC 60 LCD_A0 61 CP_CTL 62 STB_E 63 STB_D 64 STB_C 65 STB_B 66 STB_A 67 GND 68 VCC 69 TCK 70 TMS 71 TDI 72 TDO 79 CHG_CTL 80 EE_SCL 81 EE_SDA 82 UART_TX 83 UART_RX...

Page 94: ...9 RXGAIN 10 CP_OUT 11 TV_IN 12 VARGND 13 PLL_BYP 14 VCC_PLL 15 2G4_OUT 16 GND_ISOL3 17 2G4_IN 18 VCC_TXRX 19 SYN_CLK 20 SYN_EN 21 SYN_DATA 22 RXEN 23 TXEN 24 VCC_PA1 1 VCC_PA2 2 TX 3 GND_ISOL1 5 8G_PA 4 GND_ISO3 5 ANT2 6 GND_ISO4 7 VDD_LNA1 8 GND_LNA1 9 VDD_LNA2 10 GND_LNA2 11 NC 12 LNA_OUT 13 LNA_GAIN 14 LNA_EN 15 ANTSEL_B 16 ANTSEL_A 17 PA_EN 18 PA_IN 19 VDD_PA 20 GND_ISO5 21 PA_OUT 22 GND_ISO6 ...

Page 95: ...N_CLK TX_DATA RX_EN TX_EN RX_DATA SYN_OUT SHCTRL RF_RESET OSC_IN RX_GAIN GND NC C769 NC C768 NC C765 NC C766 NC C846 NC C736 NC C845 J100P C837 K1uF 1608 C842 L711 18nH L724 NC L860 NC C723 2 7nH C701 4 7uF 2125 C843 K0 47 1608 C763 K0 47 1608 C762 NC 1608 L768 NC C0 5P C859 C0 5P C858 2 4G_RF 1 TX 2 GND_ISO1 9 VCC_IF 3 GND_ISO2 4 RX 5 VCC_RF 6 VCC_IF2 7 TESTP 8 TESTN 10 XOUT 11 XIN 12 VCC_BIAS 13...

Page 96: ...96 KX TG5771BXS KX TGA570BXS 13 7 Schematic Diagram Charger Unit SCHEMATIC DIAGRAM Charger Unit NC No Components DCP DCM CM G CP CN1 2 1 R4 NC 68 R1 56 R2 56 R3 6 5 11V ...

Page 97: ... R863 R862 R865 R861 R833 R832 R834 L821 R814 R873 L871 R751 R752 R735 R733 C752 C749 C750 C736 C737 C746 C745 C734 C733 C732 C731 C751 C768 C761 C766 C841 C846 C842 C844 C845 C874 C873 C809 C713 C711 L711 L724 C707 C762 C708 C714 C837 C804 C801 C811 C824 C851 C852 C853 C862 C863 C864 C861 C865 C807 C802 C821 C725 C806 C712 C715 C716 C723 C717 C722 C706 C803 C773 C833 C832 C838 C834 C872 C704 C781...

Page 98: ...er Side View PbF PQUP11394Z URX2 UTX2 KX TG5771 CIRCUIT BOARD Base Unit_Main Flow Solder Side View 5761 5766 5771 5776 GND VCC DVCC BCLK JC JS JI R Y B JO JG G KIN4 KIN3 CHARGE CHARGE SPN SPP L1R L1T DCM2 DCM DCP DCP2 3 2 1 1 2 4 MIN MIC MIC A MIP ...

Page 99: ...745 C734 C733 C732 C731 C751 C768 C761 C766 C841 C846 C842 C844 C845 C874 C873 C809 C713 C711 L711 L724 C707 C762 C708 C714 C837 C804 C801 C811 C824 C851 C852 C853 C862 C863 C864 C861 C865 C807 C802 C821 C725 C806 C712 C715 C716 C723 C717 C722 C706 C803 C773 C833 C832 C838 C834 C872 C704 C781 C703 SHIELD C702 C741 C743 C742 C835 C705 FL891 C891 C881 C856 C857 R813 FL811 FL881 FL821 IC701 IC841 IC7...

Page 100: ...100 KX TG5771BXS KX TGA570BXS Memo ...

Page 101: ...bF L5DC01 ANS1 ANS2 SELECT ERASE CHK REC STOP MEMO INT MSG VM 5761 5766 5771 5776 6700 3 2 12 6 5 9 8 0 1 1 32 1 CN901 4 7 MUTE FLS REDIAL AUTO L1 UP RPT HOLD SP1 SP2 A CONF DOWN LED905 LED907 LED904 LED909 LED902 LED901 SP PQUP11451Z KX TG5771 CIRCUIT BOARD Base Unit_Operation Component View ...

Page 102: ...S KX TGA570BXS 14 3 2 Flow Solder Side View PbF PQUP11451Z ON THIS SIDE 1 A 12 DON T ATTACH LCD HOLDER KXTG5761 66 71 76 6700 KX TG5771 CIRCUIT BOARD Base Unit_Operation Flow Solder Side View 5761 5766 5771 5776 6700 ...

Page 103: ...D327 L326 SP L327 R246 R329 C246 R247 R263 R375 R374 R234 C371 C263 C264 C362 C361 C373 C262 C261 R331 R264 R324 R262 L332 L373 D373 Q373 L334 C322 C335 C321 C374 C372 C286 C271 C276 C281 C284 C283 C282 R286 C386 C382 C383 C275 C274 C273 C271 C272 C859 C858 C768 C769 C747 C752 C751 C763 C764 C765 C749 C750 C748 C735 C734 C733 C732 C731 C743 C702 C704 C781 C703 C741 C782 C836 C834 C835 C833 C832 C8...

Page 104: ...iew KX TGA570 CIRCUIT BOARD Handset_Main Flow Solder Side View PQUP11387Z LED255 LED256 LED257 CN271 22 1 TGA570R KX TGA570R LEFT OFF TALK BACK NEXT UP DOWN PAUSE RIGHT MENU SP 1 2 3 4 5 6 7 8 9 0 MIC MIC MIC HOLD FLASH LED252 LED254 LED261 LED251 LED253 A ...

Page 105: ...702 C704 C781 C703 C741 C782 C836 C834 C835 C833 C832 C803 C725 C705 C706 C722 C723 C717 C716 C804 C714 C708 C762 C766 C761 C841 C846 C842 C844 C843 C845 C874 C873 C811 C801 R824 R813 R812 R814 R873 R823 R822 R833 R701 R751 R752 R724 R747 R735 R864 R809 R742 R744 R861 R865 R863 R862 R832 R834 C824 C851 C852 C853 C863 C864 C821 L821 L871 L711 L768 L860 L724 L782 C802 C807 C865 C861 C862 C806 C713 C...

Page 106: ... 14 6 1 Component View 14 6 2 Flow Solder Side View CIRCUIT BOARD Charger Unit Component View CP DCP A R1 CM DCM R2 R4 RED WHITE R3 PQUP11398Z PQLV30043 KX TG57 67 PbF CIRCUIT BOARD Charger Unit Flow Solder Side View 1 2 CN1 PQUP11398Z PbF PQLV30043 KX TG57 67 A ...

Page 107: ...SEG7 D O High Low 41 SEG6 D O High Low 42 SEG5 D O High Low 43 SEG4 D O High Low 44 SEG3 D O High Low 45 SP_LED D I O Off On 46 GND GND GND 47 VCC VCC VCC 48 INT0 NC D I O 49 FLASH_SCK D O High Low 50 KEY_STB_F D O Not Active 51 KEY_STB_E D O Not Active 52 KEY_STB_D D O Not Active 53 KEY_STB_C D O Not Active 54 KEY_STB_B D O Not Active 55 KEY_STB_A D O Not Active 56 LINE_SZ D O On Off 57 RLY D O O...

Page 108: ...On Charge 42 NC D O Low 43 NC D O Low 44 NC D O Low 45 NC D O Low 46 NC D O Low 47 NC D O Low 48 LCD_SCL D O High Low 49 LCD_SI D O High Low 50 GND GND GND 51 VCC VCC VCC 52 LCD_RESET D O Normal Reset 53 FLASH_CLK D O High Low 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_A0 D O High Low 61 LED_CTRL D O High Lo...

Page 109: ...109 KX TG5771BXS KX TGA570BXS 15 3 Explanation of IC Terminals RF Part 15 3 1 IC701 ...

Page 110: ...110 KX TG5771BXS KX TGA570BXS 15 3 2 IC801 Backside Terminal GND ...

Page 111: ...111 KX TG5771BXS KX TGA570BXS 15 3 3 IC851 Backside Terminal GND ...

Page 112: ...112 KX TG5771BXS KX TGA570BXS 15 4 Terminal Guide of the ICs Transistors and Diodes 15 4 1 Base Unit 15 4 2 Handset ...

Page 113: ...113 KX TG5771BXS KX TGA570BXS 16 Exploded View and Replacement Parts List 16 1 Cabinet and Electrical Parts Base Unit ...

Page 114: ... TG5771BXS KX TGA570BXS 16 2 Cabinet and Electrical Parts Handset Note 1 Stick the MAGNETIC SHIELD No 124 to the exact location described above 2 Attach the SPACER No 128 to the exact location described above ...

Page 115: ...115 KX TG5771BXS KX TGA570BXS 16 3 Cabinet and Electrical Parts Charger Unit ...

Page 116: ...116 KX TG5771BXS KX TGA570BXS 16 4 Accessories and Packing Materials 16 4 1 KX TG5771BXS ...

Page 117: ...117 KX TG5771BXS KX TGA570BXS 16 4 2 KX TGA570BXS ...

Page 118: ...411Z1 GRILLE CRADLE ABS HB 8 PQKE10440Z1 CASE CHARGE TERMINAL PS HB 9 PQKE10437Z1 HOLDER CHARGETERMINAL L POM HB 10 PQKE10438Z1 HOLDER CHARGETERMINAL R POM HB 11 PQJT10241Y CHARGE TERMINAL L 12 PQJT10242Y CHARGE TERMINAL R 13 PQBC10473Y2 BUTTON NAVIGATOR KEY ABS HB 14 PQSX10322Z KEYBOARD SWITCH MEMO 15 PQSX10320X KEYBOARD SWITCH DIAL 16 PQBC10471Z1 BUTTON ANSWER ON ABS HB 17 PQBC10472Z1 BUTTON MES...

Page 119: ...RJ2GEJ222 2 2K R677 ERJ2GEJ221 220 R679 ERJ2GEJ821 820 R681 ERJ2GEJ561 560 Ref No Part No Part Name Description Remarks R683 ERJ2GEJ821 820 R701 ERJ2RKF103X 10K R732 ERJ2GEJ100 10 R733 ERJ2GEJ100 10 R735 ERJ2GEJ4R7 4 7 R742 ERJ2GEJ331 330 R744 ERJ2GEJ102 1K R747 ERJ2GEJ102 1K R751 ERJ2GEJ102 1K R752 ERJ2GEJ102 1K R809 ERJ2GEJ561 560 R813 ERJ2GE0R00 0 R822 ERJ2GEJ271 270 R823 ERJ2GEJ180 18 R824 ERJ...

Page 120: ...EC1H101J 100P C842 ECUV1A105KBV 1 C843 ECUV1A474KBV 0 47 C844 ECJ0EC1H020C 2P Ref No Part No Part Name Description Remarks C856 ECJ0EC1H020C 2P C857 ECJ0EB0J105K 1 C865 ECUE1A333KBQ 0 033 S C871 F1G1HR10A561 0 1P C873 ECJ0EC1H020C 2P C874 ECJ0EB0J105K 1 C881 ECJ0EC1H010C 1P C891 ECJ0EC1H010C 1P OTHERS BZ1 L0CBAB000052 MICROPHONE E1 PQMC10492Z MAGNETIC SHIELD FRAME E2 PQMC10491Z MAGNETIC SHIELD COV...

Page 121: ...LRF18NJFB COIL L782 G1C1R0KA0096 COIL L871 MQLRF3N3DFB COIL C723 MQLRF2N7DFB COIL CONNECTOR AND JACK CN271 K1MY22BA0112 CONNECTOR CN331 K2HD103D0001 JACK LCR FILTERS FL811 J0E5797B0001 LCR FILTER FL821 KNCFH165R8Z1 LCR FILTER FL881 J0E5797B0002 LCR FILTER COMPONENTS PARTS RA201 D1H84724A013 RESISTOR ARRAY S RA251 D1H83314A013 RESISTOR ARRAY S RA255 EXB28V221JX RESISTOR ARRAY RESISTORS R208 ERJ3GEY...

Page 122: ...1H100D 10P C748 ECJ0EC1H101J 100P C749 ECJ0EC1H101J 100P C750 ECJ0EC1H101J 100P C751 ECJ0EC1H100D 10P C752 ECJ0EB1H471K 470P C763 ECUV1A474KBV 0 47 C764 ECJ0EC1H020C 2P Ref No Part No Part Name Description Remarks C773 ECJ0EC1H101J 100P C781 ECJ0EB1A104K 0 1 C782 ECJ0EC1H121J 120P C801 ECJ0EC1H030C 3P C802 ECJ0EC1H220J 22P C803 ECJ0EB1C103K 0 01 C804 ECJ0EC1H150J 15P C806 ECJ0EC1H100D 10P C809 ECJ...

Page 123: ...DE for Arabic A6 PQQW15176Z LEAFLET QUICK GUIDE for Persian A7 PQKE10457Z1 HANGER BELT CLIP for Ser vice PC ABS HB A8 PQZMG5771BXS STAND WALL MOUNT with Leaf let for Service P1 XZB21X35A03 PROTECTION COVER for Base Unit P2 XZB10X35A02 PROTECTION COVER for Hand set P3 PQPD10716Z CUSHION P4 PQPK15472Z GIFT BOX Ref No Part No Part Name Description Remarks A101 PQLV207BXZ AC ADAPTOR A102 PQQX15225Z IN...

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Panasonic KX-TG5771BXS, Service Manual, Page: 23 / 123

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