Panasonic KX-TG7120FXS Service Manual Download Page 39

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KX-TG7120BXS/KX-TG7120BXT/KX-TGA711CXS/KX-TGA711CXT

9.2.2.

Check Point (Charger Unit)

Note:

After the measuring, suck up the solder of TP.
The connection of adjustment equipment is as shown in

Adjustment Standard (Charger Unit)

(P.54).

Items

Check

Point

Procedure

Check or

Replace Parts

(

)

Charging Check

1. Connect Charge Contact 12

Ω

/2 W resistor between and charge-.

2. Measure and confirm voltage across the resistor is 3.3 V ± 0.2 V.

R2, R1
R3, R4

Summary of Contents for KX-TG7120FXS

Page 1: ...served Unauthorized copying and distribu tion is a violation of law ORDER NO KM40606102CE Telephone Equipment KX TG7120FXS KX TG7120FXT KX TGA711FXS KX TGA711FXT Digital Cordless Answering System Silver Version Titanium Black Version for Central Europe ...

Page 2: ...2 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT ...

Page 3: ...s 47 10 1 Disassembly Instructions 47 10 2 How to Replace the Handset LCD 50 11 Measurements and Adjustments 51 11 1 The Setting Method of JIG Base Unit 51 11 2 Adjustment Standard Base Unit 53 11 3 Adjustment Standard Charger Unit 54 11 4 The Setting Method of JIG Handset 55 11 5 Adjustment Standard Handset 57 11 6 Things to Do after Replacing IC 58 11 7 RF Specification 59 11 8 How to Check the ...

Page 4: ...elements will refer to standard 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 ...

Page 5: ... manufacturer s specific instructions for the melting points of their products and any precautions for using their product with other materials 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 chang...

Page 6: ...tions are subject to change Connections The unit will not work during a power failure We recommend you connect a standard telephone on the same line for power pro tection Note for Service Operation range Up to 300 m outdoors Up to 50 m indoors Analog telephone connection Telephone Line ...

Page 7: ...M Codec Filter DSP Speech Decoding Speech Encoding BMC Burst Decoding Burst Encoding RF Interface 18 19 TXDA RXDA 15 21 20 22 RSSI SYCL SYDA SYEN ANT1 ANT2 RF Module 18 16 2 31 8 21 14 13 12 12 13 XTAL X1 10 368 MHz EEPROM SCL SDA 6 5 To AC Adaptor CN2 Limit Resistor CHARGE CONTACT VUNREG 3 3V Reg IC1 2 5V Reg Q9 1 8V Reg Q8 3 3V 2 5V 1 8V BBIC IC5 FLASH MEMORY TAM TAM Companion IC RESET CS CS 10 ...

Page 8: ...on DSP section Any tones tone sidetone ringing tone etc generation DSP section DTMF receiver DSP section Clock Generation for RF Module ADC DAC timer and power control circuitry All interfaces ex RF module EEPROM LED Analog Front End etc RF Module IC10 PLL Oscillator Detector Compress Expander First Mixer Amplifier for transmission and reception EEPROM IC5 Temporary operating parameters for RF etc...

Page 9: ...tection ON OFF hook circuit Bell Clip Calling Line Identification Presentation Caller ID signal detection In the standby mode Q3 is open to cut the DC loop current and decrease the ring load When ring voltage appears at the L1T A and L1R B leads when the telephone rings the AC ring voltage is transferred as follows A C4 R6 R33 IC7 Pin 60 CID INp B C3 R4 R35 IC7 Pin 52 CID INn ON OFF hook circuit I...

Page 10: ...requency modulated RF signal is generated and amplified and radiated from antenna Handset detects the voice signal or data signal in the circuit same as the following explanation of Receiver Block 4 2 4 2 Receiver Block The signal of 1900 MHz band 1881 792 MHz 1897 344 MHz which is input from antenna is input to IC10 as shown in Block Diagram Base Unit P 7 In IC10 the signal of 1900 MHz band is do...

Page 11: ... Q2 4 0V 2 5V 1 8V LCD RS RESET CS SI SCL CPU Analog Front End D A A D 30 32 66 67 72 62 52 45 44 58 56 59 60 6 9 10 77 ADPCM Codec Filter DSP Speech Decoding Speech Encoding BMC Burst Decoding Burst Encoding RF Interface RF Module IC4 23 22 RXDA TXDA 19 26 25 24 RSSI SYDA SYEN SYCL 16 17 XTAL X1 10 368 MHz BATTERY 61 ON SWITCH KEYPAD ROWS COLUMNS 1 12 40 76 27 28 34 35 36 74 BBIC IC1 IC3 11 LCD B...

Page 12: ...nd 1 8 V 4 4 3 Charge Circuit Circuit Operation When charging the handset on the Base Unit the charge current is as follows DC 6 5 V R55 R56 CHARGE Base CHARGE Handset L4 Q4 D7 F1 BATTERY Battery BATTERY R45 GND L5 CHARGE Handset CHARGE Base GND DC GND In this way the BBIC on Handset detects the fact that the battery is charged The charge current is controlled by switching Q5 of Handset Refer to F...

Page 13: ...13 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT 4 5 Circuit Operation Charger Unit 4 5 1 Power Supply Circuit The power supply is as shown ...

Page 14: ...14 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT 4 6 Signal Route ...

Page 15: ...15 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT ...

Page 16: ...ed on the wall if required Note Never install telephone wiring during a lightning storm The AC adaptor must remain connected at all times It is normal for the adaptor to feel warm during use The AC adaptor should be connected to a vertically oriented or floor mounted AC outlet Do not connect the AC adaptor to a ceiling mounted AC outlet as the weight of the adaptor may cause it to become disconnec...

Page 17: ...y ends and the unit contacts with a dry cloth 6 2 2 Battery Charge Place the handset on the base unit or charger for about 7 hours before initial use When charging the battery icon is shown as follows When the batteries are fully charged remains on the display The charge indicator lights up when the handset is placed on the base unit or charger Note It is normal for the handset to feel warm during...

Page 18: ...nce depends on a combination of how often the handset is in use and how often it is not in use standby Battery operating time may be shortened over time depending on usage conditions and ambient temperature Even after the handset is fully charged the handset can be left on the base unit or charger without any ill effect on the batteries The battery strength may not be displayed correctly after you...

Page 19: ...g the unitís region setting CZ 100 msec SK 100 msec 3 If you forget your PIN see For Service Hint P 22 4 If you change the PIN please make note of your new PIN The unit will not reveal the PIN to you 5 The items are not shown on the display 7 1 1 SMS Settings If the base unit is reset to its default settings the following SMS related settings will be reset The contents of the receive and send list...

Page 20: ...20 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT 7 2 Handset Settings Cross Reference Registering a Handset to the Base Unit P 21 Base Unit Settings P 19 ...

Page 21: ...21 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT 7 3 Registering a Handset to the Base Unit Cross Reference For Service Hint P 22 7 3 1 Cancelling a handset ...

Page 22: ...22 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT 7 4 For Service Hint ...

Page 23: ...23 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT 8 Service Mode 8 1 Engineering Mode 8 1 1 Base Unit ...

Page 24: ...nts Careless rewriting may cause serious damage to the computer system ID 00 10 00 14 Given value Bell length 01 F6 03 8D 03 8E 64 10sec 4 32 5sec 64 10sec 1E 3sec 5 14 2sec This is time until bell stops ringing Unit 100ms PULSE Dial speed 10PPS 20PPS 03 5F 03 61 2A 40msec 4 16 20msec This is pulse make time Unit 1ms 03 60 03 62 3A 60msec 4 1C 30msec This is pulse break time Unit 1ms 01 E4 57 870m...

Page 25: ...25 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT 8 1 2 Handset ...

Page 26: ...alue MIN hex Remarks Sending level 00 06 Adjusted value Given value 6F 00 3 Receiving level 00 07 Adjusted value Given value 00 3F 4 Battery Low 00 04 25 5 Frequency 00 01 75 ID 00 10 00 14 Given value Desired Number hex Input Keys Desired Number hex Input Keys 0 0 A R 0 1 1 B R 1 C R 2 D R 3 E R 4 9 9 F R 5 Items Description Sending level Analog Front End MIC Setting for Handset Mode Receiving le...

Page 27: ...ing Guide 9 1 Troubleshooting Flowchart Flow Chart Cross Reference Check Power P 28 Bell Reception P 35 Check Battery Charge P 29 Check Link P 30 Check Handset Transmission P 34 Check Handset Reception P 34 Signal Route P 14 Check Caller ID P 34 Check TAM Operation P 35 ...

Page 28: ...k Power 9 1 1 1 Base Unit Is the AC Adaptor inserted into AC outlet 1 Cross Reference Power Supply Circuit P 9 Note 1 Refer to Specifications P 6 for part number and supply voltage of AC Adaptor 9 1 1 2 Handset Cross Reference Power Supply Circuit Reset Circuit P 12 ...

Page 29: ...X TGA711CXS KX TGA711CXT 9 1 2 Check Battery Charge 9 1 2 1 Base Unit Cross Reference Charge Circuit P 12 9 1 2 2 Handset Cross Reference Check Power P 28 Charge Circuit P 12 9 1 2 3 Charger Unit Cross Reference Charge Circuit P 12 ...

Page 30: ... KX TG7120BXT KX TGA711CXS KX TGA711CXT 9 1 3 Check Link 9 1 3 1 Base Unit Note 1 Refer to Troubleshooting by Symptom Base Unit and Charger Unit P 36 Cross Reference Check Point Base Unit P 36 Power Supply Circuit P 9 ...

Page 31: ...31 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT Cross Reference Check Point Base Unit P 36 ...

Page 32: ...KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT 9 1 3 2 Handset Note 1 Refer to Troubleshooting by Symptom Handset P 40 Cross Reference Check Point Handset P 40 Power Supply Circuit Reset Circuit P 12 ...

Page 33: ...33 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT Cross Reference Check Point Handset P 40 ...

Page 34: ...TGA711CXT 9 1 4 Check Handset Transmission Cross Reference Signal Route P 14 9 1 5 Check Handset Reception Cross Reference How to Check the Handset Speaker or Receiver P 60 Signal Route P 14 9 1 6 Check Caller ID Cross Reference Signal Route P 14 ...

Page 35: ... Cross Reference Telephone Line Interface P 9 Check Link P 30 How to Check the Handset Speaker or Receiver P 60 9 1 8 Check TAM Operation Cross Reference Power Supply Circuit P 9 Note 1 When replacing FLASH MEMORY IC9 TAM data need to be written to it Refer to Base Unit of Things to Do after Replacing IC P 58 ...

Page 36: ... V Supply Confirma tion VDD2 1 Confirm that the voltage between test point VDD2 and GND is 2 5 V 0 2 V Q9 C70 C71 C 1 8 V Supply Confirma tion VDD1 1 Confirm that the voltage between test point VDD1 and GND is 1 8 V 0 1 V Q8 R72 D12 C68 D BBIC Confirmation 1 BBIC Confirmation Execute the command getchk 2 Confirm the returned checksum value Connection of checksum value and program number is shown b...

Page 37: ...stmode 3 Execute the command sendchar dmv 2 2 4 Check that Signalling Status has been set to Locked then press ACCEPT RFPI 5 Initiate connection from Dect tester set up connect 6 Execute the command ANT1 7 Confirm that the NTP value at ANT is 20 dBm 25 dBm IC7 IC10 L7 L3 L4 L6 C117 C118 C119 C120 C124 C125 R106 R109 DA1 C102 R102 R103 Q10 C110 C112 R111 C126 C127 R112 J Modulation Check and Adjust...

Page 38: ...r RAMP is matching IC7 IC10 L7 L3 L4 L6 C117 C118 C119 C120 C124 C125 R106 R109 DA1 C102 R102 R103 Q10 C110 C112 R111 C126 C127 R112 Q Audio Check 1 Link with Handset 2 Input 45dBm 1kHz to MIC of Handset Measure the Level at Line I F and distortion level 3 Confirm that the level is 8 5 dBm 2 dBm and that the distortion level is 5 at TEL Line 600 Ω Load 4 Input 20 dBm 1 kHz to Line I F Measure the ...

Page 39: ...he solder of TP The connection of adjustment equipment is as shown in Adjustment Standard Charger Unit P 54 Items Check Point Procedure Check or Replace Parts A Charging Check 1 Connect Charge Contact 12 Ω 2 W resistor between charge and charge 2 Measure and confirm voltage across the resistor is 3 3 V 0 2 V R2 R1 R3 R4 ...

Page 40: ...at the voltage between test point VDD3 and GND is 3 3 V 0 3 V Backlight is ON IC1 F1 C1 C2 C3 R1 Q1 D1 L1 C 2 5 V Supply Confirma tion VDD2 1 Confirm that the voltage between test point VDD2 and GND is 2 5 V 0 1 V IC1 Q3 C5 D BBIC Confirmation 1 BBIC Confirmation Execute the command getchk 2 Confirm the returned checksum value Connection of checksum value and program number is shown below IC1 X1 C...

Page 41: ...e the command conttx 3 Input Command rdeeprom 00 01 01 then you can confirm the current value 4 Adjust the frequency of CLK executing the command setfreq xx where xx is the value so that the reading of the frequency counter is 10 368000 MHz 10 Hz Note CLK is displayed only for a few seconds when executing the command conttx after battery is inserted IC1 X1 C6 C7 R19 IC4 C57 K Transmitted Power Con...

Page 42: ...r power to 81 dBm 5 Execute the command readrssi 6 Confirm that the returned value is 1C 8 hex 7 Set DECT tester power to 63 dBm 8 Execute the command readrssi 9 Confirm that the returned value is 25 8 hex IC1 IC4 C66 C58 C57 C50 C52 C53 R52 C60 C61 R Power RAMP Confirma tion Follow steps 1 to 3 of K 4 Confirm that Power RAMP is matching IC1 IC4 C66 C58 C57 C50 C52 C53 R52 C60 C61 S Audio Check an...

Page 43: ... and damage 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 9 4 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 cu...

Page 44: ...e accuracy of 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 9 4 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 45: ...place the IC 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 9 5 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 t...

Page 46: ... placing the 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 9 5 5 How to Remove a Solder Bridge When a Solder ...

Page 47: ...47 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT 10 Disassembly and Assembly Instructions 10 1 Disassembly Instructions 10 1 1 Base Unit ...

Page 48: ...48 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT 10 1 2 Handset ...

Page 49: ...49 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT 10 1 3 Charger Unit ...

Page 50: ...50 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT 10 2 How to Replace the Handset LCD ...

Page 51: ...scope 11 1 1 2 JIG and PC Serial JIG JIG Cable PQZZ1CD300E PC which runs in DOS mode Batch file CD ROM for setting PQZZTG7120FX Note If you have the JIG Cable for TCD500 series PQZZ1CD505E change the following values of resis tance Then you can use it as a JIG Cable for both TCD300 and TCD500 series It is an upper compatible JIG Cable 11 1 2 PC Setting 11 1 2 1 Connections Connect the AC adaptor t...

Page 52: ...FF and the data from address 00 00 to FF is read out readid Read ID RFPI Type readid and the registered ID is read out writeid Write ID RFPI Type writeid 00 18 E0 0E 98 and the ID 0018 E0 0E 98 is written setfreq Adjust Frequency of RFIC Type setfreq nn hookoff Off hook mode on Base Type hookoff hookon On hook mode on Base Type hookon getchk Read checksum Type getchk wreeprom Write the data of EEP...

Page 53: ... BUZ DC_IN DCM L2T L1T L1R L2R 2 2 4 3 1 VDD2 LINE_DC RED BLACK CHARGE RX TX GND VDD4 VDD3 L1R L1T DTMF Tester Call ID Simulator BELL Simulator LOOP Simulator AF OSC AF VOLT METER OSC OSC 600 Ω 150 Ω SP 12 Ω 2 w CHARGE CHARGE Digital Volt Meter DC_IN GND DC POWER 6 5 V DECT Tester CMD60 Short A_1 and GND GND ANT Frequency Counter U ART PC GND CLK Digital Volt Meter GND LINE_DC AF Volt Meter GND BU...

Page 54: ...nit When connecting the simulator equipment for checking please refer to below 11 3 1 Flow Solder Side View Note A is referred to Check Point Charger Unit P 39 PQUP11413Z for_ PQLV30045ZA BLACK RED TP4 TP3 A TP1 TP2 1 2 PbF GND TP4 TP3 TP1 DC POWER 6 5 V Digital Volt Meter 12 2 W GND TP2 A ...

Page 55: ... current Oscilloscope 11 4 1 2 JIG and PC Serial JIG JIG Cable PQZZ1CD300E PC which runs in DOS mode Batch file CD ROM for setting PQZZTG7120FX Note If you have the JIG Cable for TCD500 series PQZZ1CD505E change the following values of resis tance Then you can use it as a JIG Cable for both TCD300 and TCD500 series It is an upper compatible JIG Cable 11 4 2 PC Setting 11 4 2 1 Connections Connect ...

Page 56: ...ad the data of EEPROM Type rdeeprom 00 00 FF and the data from address 00 00 to FF is read out readid Read ID RFPI Type readid and the registered ID is read out writeid Write ID RFPI Type writeid 00 18 E0 0E 98 and the ID 0018 E0 0E 98 is written setfreq Adjust Frequency of RFIC Type setfreq nn getchk Read checksum Type getchk wreeprom Write the data of EEPROM Type wreeprom 01 23 45 01 23 is addre...

Page 57: ...pe TP23 S MIC MIC 600 Ω F G H I A D E H I J K Q A B C J S T S T K L M N O P Q R PbF L1 C38 R11 R12 C15 R8 Q5 Q9 R7 R5 R6 R21 R62 R61 R47 R45 C14 C11 L4 L5 F1 R15 R24 R23 C95 C97 C96 C20 C93 Q7 Q11 Q10 Q1 D1 Q2 C2 C100 C37 Q3 C1 C98 C70 C54 C55 C50 C51 R53 C66 ANT ANT1 C72 R91 R64 R65 R42 R41 R40 C94 R92 C7 CHARGE CHARGE MIC TP20 TP21 TP23 TP22 J3 J1 D8 Q4 D6 D7 C12 C30 C31 C18 C8 C21 C26 C22 C39 C...

Page 58: ...lock adjustment Refer to Check Point F 2 EEPROM IC5 Adjustment parameter data country version batch file default batch file etc 1 Change the address 0000 of EEPROM to AA 2 Default batch file Execute the command default bat 3 Country version batch file Execute the command TG7120XXrevYY bat 1 4 Clock adjustment Refer to Check Point F 2 FLASH IC9 Voice prompt data vary depending on country version 1 ...

Page 59: ... ppm Check Point Base Unit M Timing Accuracy 2 0 ppm Check Point Base Unit N RSSI Level 22 hex A hex Check Point Base Unit O Power RAMP Power RAMP is matching Check Point Base Unit P Item Value Refer to TX Power 19 dBm 25 dBm Check Point Handset K Modulation 350 400 320 370 kHz div Check Point Handset L Frequency Offset 45 kHz 45 kHz Check Point Handset M Frequency Drift 30 kHz ms Check Point Hand...

Page 60: ...e Unit and Handset BASE UNIT HANDSET Channel No Transmit Frequency Receive Frequency Transmit Frequency Receive Frequency 1 1897 344 1897 344 1897 344 1897 344 2 1895 616 1895 616 1895 616 1895 616 3 1893 888 1893 888 1893 888 1893 888 4 1892 160 1892 160 1892 160 1892 160 5 1890 432 1890 432 1890 432 1890 432 6 1888 704 1888 704 1888 704 1888 704 7 1886 976 1886 976 1886 976 1886 976 8 1885 248 1...

Page 61: ...me with the development of new technology 12 1 2 Handset Schematic Diagram Handset Notes 1 DC voltage measurements are taken with an oscilloscope or a tester with a ground 2 The schematic diagram may be modified at any time with the development of new technology 12 1 3 Charger Unit Schematic Diagram Charger Unit Notes 1 DC voltage measurements are taken with voltmeter from the negative voltage lin...

Page 62: ...C K0 1u C51 1005 C60 K0 1u 1005 C61 K0 1u 1005 C73 K0 1u 1005 TP16 TP15 C C74 K0 1u 1005 C75 K0 1u 1005 C59 K0 1u 1005 C67K0 1u 1005 IC3 NC 1 CD 2 VREF 3 VIN 4 VIN 5 VOUT1 6 V 7 GND 8 VOUT2 IC2 NC 1 Vout 2 NC 3 GND 4 Cn 5 Cont 6 Sub 7 Vin C C C C 4 0V VDD4 C D10 1 2 C C C 330u C36 C VDD3 3 3V 120 R38 1005 200 R39 1005 C IC1 4 Fin 1 ADJ GND 3 Input 2 Output 8 0V C C DCM SP SP SP SP 1k R79 1005 1k R...

Page 63: ...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 NC 1005 R88 C C C C C IC8 1 GPIO4 PCM_DI 2 GPIO5 PCM_DO 9 SPI_DI 3 GPIO6 PCM_CLK 4 GPIO7 PCM_FSC 5 VDD1 6 VDDIO1 7 CLK 8 PF 10 SPI_DO 11 SPI_CLK 12 SPI_EN 13 AVD1 14 GPO9 PAOUTp 15 VDDPA 16 GPO8 PAOUTm 17 GPIO0 18 GPIO1 19 VDD2 20 VDDIO2 21 GPIO2 22 GPIO3 23 RST 24 AVD2 25 LSR 26 LSRp ...

Page 64: ...m Base Unit_Operation LED2 ANS_ON 1 2 SKIP VOL_UP REPEAT 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 VOL_DOWN PLAY STOP ERASE LOCATOR GND VDD LED2T ANS_ON LED1 PLAY 1 2 CN10 1 CN10 2 CN11 1 CN11 2 CN11 3 CN11 4 CN11 5 CN10 4 CN10 3 CN10 5 KX TG7120 SCHEMATIC DIAGRAM Base Unit_Operation ...

Page 65: ...65 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT Memo ...

Page 66: ...0 L6 LED1 1 2 LED2 1 2 LED3 1 2 LED4 1 2 LED6 1 2 LED7 1 2 LED8 1 2 LED9 1 2 LED5 1 2 LED10 A K 15k R14 10p C95 10p C96 10p C97 C5 2 2u C10 2 2u 59 LDO1_CTRL 61 P16 PON INT6 63 LDO1_sense 65 AVD2 67 LSRp REF 69 VREFm 71 AGND 73 VREFp 4 VSS1 75 P14 INT4 6 LED2 PWM1 P21 77 P22 CLK100 8 LED_BIAS P36 PD6 79 ADC3 10 SCL1 P24 12 INT2 P12 14 AVS 16 Xtal1 18 RFCLKp 20 VDDRF 22 TDO 24 SK 26 LE 28 P32 PD2 3...

Page 67: ..._1 32 GND19 R53 NC 1n C52 R51 NC BATTERY 2 5V Q10 2 3 1 Q11 2 3 1 2 5V 1u C12 REV_TEST1 REV_TEST2 SP_TEST1 SP_TEST2 TP22 TP23 CLK C72 NC MIC 1 2 C14 NC 10p C50 C51 NC C54 NC C55 NC C56 NC C59 NC C62 NC C70 NC C71 NC 100p C37 150p C53 4 7u C60 4 7u C61 1k R52 33 R21 2 2k R25 680k R43 D4 A K D5 A K 100n C11 33 R22 10k R44 10k R40 10k R41 100k R42 ANT 10p C73 10p C74 10p C75 470 R23 3 3k R24 1 A0 2 A...

Page 68: ...68 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT 12 5 Schematic Diagram Charger Unit TP3 G J1 2 1 TP4 TP2 TP1 10 R1 10 R3 12 R2 12 R4 SCHEMATIC DIAGRAM Charger Unit ...

Page 69: ...2 C56 C25 C7 C55 C14 C54 C66 C67 C57 C68 C83 C142 C151 C148 C143 C145 D10 C146 C42 C81 C133 C51 C48 C44 D11 C120 C49 C104 C103 C107 C110 C109 C128 C127 C126 C112 C108 C105 R105 R104 R103 R110 R109 R58 R108 R107 R39 R38 R1 R117 R71 R33 R64 D6 R19 R8 R3 R4 TP10 R32 R116 R69 R70 R42 R41 R118 R88 R90 R91 R72 R24 R25 R13 R31 R74 R29 C22 R93 R94 R96 R97 R113 CN6 1 1 CN5 R101 R14 R15 D7 D8 D15 D16 R11 D4...

Page 70: ...Solder Side View PbF PQUP11410Z KX TG7100 7120 8100 8120 A VDD1 VDD3 A_1 CLK RX TX GND VDD4 BUZ SP SP SP ANT A_2 VDD2 LINE_DC L1T L1R L2R L2T 4 3 2 DCM 2 1 DC_IN RED BLACK CHARGE KX TG7120 CIRCUIT BOARD Base Unit_Main Flow Solder Side View VDD1 VDD2 VDD3 CLK 10 368 MHz ...

Page 71: ...GA711CXT 13 2 Circuit Board Base Unit_Operation 13 2 1 Component View CN10 CN11 A VDD LED2T ANS_ON STOP VOL_UP VOL_DOWN GND SKIP PLAY REPEAT ERASE LOCATOR LED2 LED1 PQUP11408Z KX TG7120 PbF KX TG7120 CIRCUIT BOARD Base Unit_Operation Component View ...

Page 72: ...72 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT 13 2 2 Flow Solder Side View CN10 CN11 A PQUP11408Z KX TG7120 PbF KX TG7120 CIRCUIT BOARD Base Unit_Operation Flow Solder Side View ...

Page 73: ...6 ANT ANT1 C72 R91 R64 R65 R42 R41 R40 C94 R92 C7 CHARGE BATT BATT CHARGE MIC TP20 TP21 TP23 TP22 J3 J1 D8 Q4 D6 D7 C12 C30 C31 C18 C8 C21 C26 C22 C39 C32 C33 C23 R16 R66 GND BAT C5 C4 C9 C10 R63 JTAG R44 C101 C99 SP C60 C59 1 10 16 17 11 32 27 26 C61 C62 C56 C53 C52 R52 C58 R51 CLK CLK_G C57 C3 POWER VDD3 VDD1 VDD2 R43 R14 R25 R22 C73 C74 C35 C92 R46 C34 J2 J4 URX UTX C91 C19 C6 R19 R2 R1 D4 D5 C...

Page 74: ...Solder Side View SOFT_C SOFT_B SOFT_A C49 R93 C42 R95 CN3 C48 C40 C41 C43 C44 C45 C46 C47 R94 UP S1 CANCEL DOWN RIGHT LED9 LED8 SP LEFT 1 2 3 6 5 7 0 R 4 9 8 INT MIC TALK KX TGA711 CIRCUIT BOARD HANDSET Flow Solder Side View PbF LED1 LED10 LED2 LED3 LED4 LED5 LED7 LED6 ...

Page 75: ...rger Unit 13 4 1 Component View 13 4 2 Flow Solder Side View PQUP11413Z for_ PQLV30045ZA BLACK RED A R1 R3 J1 R2 R4 1 2 PbF CIRCUIT BOARD Charger Unit Component View PQUP11413Z for_ PQLV30045ZA BLACK RED TP4 TP3 A TP1 TP2 1 2 PbF CIRCUIT BOARD Charger Unit Flow Solder Side View ...

Page 76: ...0 I I PD 25 P33 PD3 D I O ROW1 I I PD 26 P34 PD4 D I O ROW2 I I PD 27 TDOD P35 PD5 D O KEY0 O I PD 28 P36 PD6 D O KEY1 O I PD 29 VSS2 VSS 30 VDDIO2 VDDIO 31 VDD2 VDD 32 PCM_FSC INT0 P10 D I O RDY I I PU 33 P00 UTX D I O UTX O I PU 34 P01 URX D I O URX O I PU 35 P02 JTIO D I O JTIO O I PU 36 P03 SDA2 D I O TAM_CSn O I PU 37 P04 SCL2 D O TAM_RSTn O I PU 38 P05 SPICLK PCM_CLK D I O SPICLK O I PU 39 P...

Page 77: ...TG7120BXT KX TGA711CXS KX TGA711CXT 60 CIDINp A I CIDINp I I 61 P14 INT4 D O HOOK O I 62 PULSE_CTRL D O Q2_ON Q2_OFF 63 ADC2 A I ADC2 I I 64 ADC0 A I ADC0 I I Pin No Description I O Connection at Normal mode at Reset mode ...

Page 78: ...I PD 28 P3 2 PD2 D IO COL2 I O I PD 29 VSSPA S VSSPA S 30 PAOUTp A O PAOUTp O I PD 31 VDDPA S VDDPA S 32 PAOUTp A O PAOUTp O I PD 33 VSSPA S VSSPA S 34 P3 3 PD3 D IO COL3 I O I PD 35 P3 4 PD4 D IO COL4 I O I PD 36 TDOD P3 5 PD5 D IO COL5 I O I PD 37 VSS S VSS S 38 VDDIO S VDDIO S 39 VDD S VDD S Å 40 PCM_FSC INT0n P1 0 D IO ROW0 I I PU 41 P0 0 UTX D O UTX O I PU 42 P0 1 URX D I URX I I PU 43 P0 2 J...

Page 79: ... O 68 MICn A I NC I I 69 VREFm S VREFm S 70 VBUF A O VBUF O O 71 AGND S AGND S 72 MICp A I MICp I I 73 VREFp A O VREFp O O 74 P3 0 D O COL0 I O I PD 75 P1 4 INT4n D O KEY_LED O I 76 P1 3 INT3n D I ROW3 I I 77 P2 2 CLK100 D O LCD_RESET O I PD 78 AVS_Sence A I AVS_Sence I I 79 ADC3 A I ADC3 I I 80 ADC0 A I NC I I Pin No Description I O Connection at Normal at Reset mode ...

Page 80: ...80 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT 14 3 Terminal Guide of the ICs Transistors and Diodes 14 3 1 Base Unit 14 3 2 Handset ...

Page 81: ...81 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT 15 Exploded View and Replacement Parts List 15 1 Cabinet and Electric Parts Base Unit ...

Page 82: ...ic Parts Handset Note 1 This cable is fixed by welding Refer to How to Replace the Handset LCD P 50 2 The rechargeable Ni MH battery P03P HHR 4EPT Capacity up to 750 mAh is available through sales route of Panasonic 3 Attach the spacer No 121 to the exact location described above ...

Page 83: ...83 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT 15 3 Cabinet and Electric Parts Charger Unit ...

Page 84: ...84 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT 15 4 Accessories and Packing Materials 15 4 1 KX TG7120FXS FXT ...

Page 85: ...85 KX TG7120BXS KX TG7120BXT KX TGA711CXS KX TGA711CXT 15 4 2 KX TGA711FXS FXT ...

Page 86: ...RGE TERMINAL R 4 PQKE10454Z1 HOLDER CHARGE TERMINAL L POM HB 5 PQKE10455Z1 HOLDER CHARGE TERMINAL R POM HB 6 PQKE10452Z1 CASE CHARGE TERMINAL for KX TG7120FXS PS HB 6 PQKE10452Z2 CASE CHARGE TERMINAL for KX TG7120FXT PS HB 7 L0AA04A00028 SPEAKER 8 PQHR11082Z GUIDE SPEAKER POM HB 9 PQBC10469Y2 BUTTON NAVIGATOR BUTTON ABS HB 10 PQHR11209Z GUIDE BUTTON POM HB 11 PQBC10467Z1 BUTTON PLAY ABS HB 12 PQHR...

Page 87: ...2GEJ103 10K R100 ERJ3GEYJ103 10K Ref No Part No Part Name Description Remarks R101 ERJ3GEYJ100 10 R102 ERJ3GEYJ222 2 2K R103 PQ4R10XJ471 470 S R106 ERJ3GEYJ271 270 R109 ERJ3GEYJ181 180 R111 ERJ2GEJ101 100 R112 ERJ2GEJ102 1K R114 ERJ2GE0R00 0 R116 ERJ2GEJ180 18 R117 ERJ2GEJ332 3 3K R118 ERJ2GEJ105X 1M R119 ERJ2GEJ331 330 R120 ERJ2GEJ271 270 C18 ERJ3GEYJ562 5 6K J4 ERJ3GEY0R00 0 L9 ERJ2GE0R00 0 CAPA...

Page 88: ...8Y2 PUSH BUTTON NAVIGATOR KEY ABS HB 109 PQSX10315Z KEYBOARD SWITCH 110 PQJT10240Z CHARGE TERMINAL R 111 PQJT10239Z CHARGE TERMINAL L 112 PQWE10045Y BATTERY TERMINAL 113 PQGT18717Z NAME PLATE for KX TGA711FXS 113 PQGT18717X NAME PLATE for KX TGA711FXT 114 PQHR11198Z GUIDE SPEAKER ABS HB 115 PQHG10729Z RUBBER PARTS SPEAKER 116 L0AD02A00026 SPEAKER Ref No Part No Part Name Description Remarks 117 PQ...

Page 89: ...C49 ECJ0EB1H102K 0 001 C50 ECJ0EC1H100D 10P C52 ECJ0EB1H102K 0 001 C53 ECJ0EC1H151J 150P C57 ECJ0EC1H390J 39P C58 ECJ0EB1H102K 0 001 Ref No Part No Part Name Description Remarks C60 F1J0J4750005 4 7 C61 F1J0J4750005 4 7 C66 ECJ0EC1H1R5C 1 5P C73 ECJ0EC1H100D 10P C74 ECJ0EC1H100D 10P C75 ECJ0EC1H100D 10P C95 ECJ0EC1H100D 10P C96 ECJ0EC1H100D 10P C97 ECJ0EC1H100D 10P C98 ECJ0EC1H100D 10P C100 ECJ0EC...

Page 90: ...QUICK GUIDE for Czech A8 PQQW15236Z LEAFLET QUICK GUIDE for Slovak A9 PQQW15437Z LEAFLET BATTERY A10 PQKE10456Z1 HANGER BELT CLIP for KX TG7120FXS for Service PC ABS HB A10 PQKE10456Z2 HANGER BELT CLIP for KX TG7120FXT for Service PC ABS HB A11 PQKL10074Z1 STAND WALL MOUNT for Ser vice ABS HB P1 PQPP10116Z PROTECTION COVER for Base Unit P2 PQPP10084Z PROTECTION COVER for Hand set P3 PQPK15216Z GIF...

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Panasonic KX-TG7120FXS, Service Manual

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