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KX-TG8421E/KX-TG8422E/KX-TG8423E/KX-TG8424E/KX-TGA840E

9.3.2.

Troubleshooting for Speakerphone

When the customer’s telephone line corresponds to the following conditions, and the transmission signal of SP-Phone is inter-
rupted, performing the next set up to a cordless handset will improve it to some extent.

Conditions

1. When customer’s line has less line loss.

ex.) The customer is using optical fiber, ISDN terminal adaptor, or PBX.
In this case, receiving signal is strong and it may affect transmission signal.

2. When the other party is talking from noisy place.

ex.) The other party is using cellular phone. The background noise is very loud.
In this case, the noise from the other party (i.e. surrounding noise) may affect transmission signal.

Setting Method

• Change the handset address of EEPROM (0129) from 00 to 01 by

Engineering Mode

.

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Содержание KX-TG8421EB

Страница 1: ...lephone Equipment Model No KX TG8421EB KX TG8421EM KX TG8421EN KX TG8422EB KX TG8422EM KX TG8422EN KX TG8423EB KX TG8423EM KX TG8423EN KX TG8424EB KX TG8424EM KX TG8424EN KX TGA840EB KX TGA840EM KX TGA840EN Digital Cordless Answering System B Black Version M Metallic Grey Version N Platinum Silver Version for United Kingdom ...

Страница 2: ...2 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E ...

Страница 3: ...bly Instructions 56 10 2 How to Replace the Handset LCD 60 11 Measurements and Adjustments 61 11 1 The Setting Method of JIG Base Unit 61 11 2 Adjustment Standard Base Unit 63 11 3 Adjustment Standard Charger Unit 64 11 4 The Setting Method of JIG Handset 65 11 5 Adjustment Standard Handset 67 11 6 Things to Do after Replacing IC or X tal 68 11 7 RF Specification 70 11 8 How to Check the Handset S...

Страница 4: ...type recommended by the manufacturer 3 Dispose of used batteries according to the manufacture s Instructions 2 2 About Lead Free Solder Pbf Pb free Note In the information below Pb the symbol for lead in the periodic table of 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 ma...

Страница 5: ...or Tin Zinc and Bismuth Sn Zn Bi Please check the 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 3 Discarding of P C Board When discarding P C Board delete all personal information such a...

Страница 6: ...E 3 Specifications Note Design and specifications are subject to change without notice Note for Service Operation range Up to 300 m outdoors Up to 50 m indoors depending on the condition Analog telephone connection Telephone Line Optional headset KX TCA94EX ...

Страница 7: ... Burst Encoding Burst Decoding RF PLL 5 3 77 75 9 10 EEPROM SCL SDA 57 58 44 To AC Adaptor Limit Resistor Charge Detector CHARGE CONTACT Optional VUNREG 3 0V Reg IC1 2 4V Reg Q9 1 8V Reg Q8 3 0 V 2 4 V 1 8 V BBIC IC401 IC7 KX TG8421 8422 8423 8424 BLOCK DIAGRAM BASE UNIT MOD DEMOD Charge Pump 43 2 5V XTAL X1 X1 10 368 MHz IC801 RX n RX p TX p TX n P on PSEL V DD PADRV 4 3 6 7 TX on RX on D801 6 72...

Страница 8: ...on Echo cancellation and Echo suppression 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 PLL Oscillator Detector Compress Expander First Mixer All interfaces ex RF Power Amp EEPROM LED Analog Front End etc RF Power Amp IC801 Amplifier for transmission and reception EEPROM...

Страница 9: ...daptor 6 5 V as shown in Fig 101 The power supply is as follows DECT BBIC IC7 DC Jack 6 5 V D1 IC1 IC7 DC Jack 6 5 V D1 IC1 Q9 IC7 DC Jack 6 5 V D1 IC1 Q8 IC7 RF Power Amp IC801 DC Jack 6 5 V D1 IC1 IC801 Power AMP EEPROM IC401 DC Jack 6 5 V D1 IC1 IC7 IC401 FLASH MEMORY IC421 DC Jack 6 5 V D1 IC1 IC7 IC421 Charge Contact TP16 DC Jack 6 5 V D1 R56 R55 D22 TP16 Fig 101 ...

Страница 10: ...h Refer to Signal Route P 14 4 2 4 1 Transmitter Block The voice signal input from the TEL LINE interface goes to RF Power Amp IC801 through DECT BBIC IC7 as shown in Block Diagram Base Unit P 7 The voice signal passes through the analog part of IC7 where it is amplified and converted to a digital audio stream signal The burst switch controller processes this stream performing encryption and scram...

Страница 11: ... Front End D A A D 33 35 15 16 19 20 18 28 32 31 57 58 36 13 43 42 63 54 55 66 ADPCM Codec Filter DSP Speech Decoding Speech Encoding BMC Burst Decoding RF PA IC801 Burst Encoding RF PLL MOD DEMOD 5 3 4 3 6 7 8 9 2 77 78 75 RXn RXon ANT DA801 RXp TXp TXn Pon PSEL TXon VDD PADRY 9 10 XTAL X1 10 368 MHz BATTERY 44 ON SWITCH KEYPAD Charge Pump ROWS COLUMNS CP2 5V CP4 0V 48 49 50 51 22 23 24 25 26 BBI...

Страница 12: ...in and 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 D1 R56 R55 D22 CHARGE Base CHARGE Handset Q4 D7 F1 BATTERY Bat tery BATTERY R45 GND 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 Q9 of Handset Refe...

Страница 13: ...13 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 4 5 Circuit Operation Charger Unit 4 5 1 Power Supply Circuit The power supply is as shown ...

Страница 14: ...14 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 4 6 Signal Route ...

Страница 15: ...15 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E ...

Страница 16: ...16 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 5 Location of Controls and Components 5 1 Controls 5 1 1 Base Unit 5 1 2 Handset ...

Страница 17: ...17 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 6 Installation Instructions 6 1 Connections 6 2 Battery 6 2 1 Battery Installation See For Service Hint P 28 6 2 2 Battery Charge ...

Страница 18: ...t 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 2 3 Battery Level 6 2 4 Panasonic Ni MH Battery Performance supplied batteries ...

Страница 19: ...E KX TG8423E KX TG8424E KX TGA840E 7 Operating Instructions 7 1 Programmable Settings You can customise the unit by programming the following features using the handset 7 1 1 Programming by scrolling through the display menus ...

Страница 20: ...item will not be reset when pressing and keys Refer to How to Clear User Setting P 35 2 The item will not be reset when pressing and keys Refer to How to Clear User Setting P 35 Cross Reference Registering a Handset to a Base Unit P 22 7 1 2 Answering System Setting ...

Страница 21: ...21 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 7 1 3 SMS Setting Note 1 If the password of a private mailbox is forgotten refer to For Service Hint P 28 ...

Страница 22: ... you forget your PIN see Programmable settings in Troubleshooting P 24 Note When you purchase an additional handset refer to the additional handset s installation manual for registration 7 2 1 Deregistering a Handset 7 2 2 Cancelling a base unit Cross Reference Registering a Handset to a Base Unit P 22 ...

Страница 23: ...TG8424E KX TGA840E 7 3 Copying Phonebook Entries You can copy phonebook entries to the phonebook of another compatible Panasonic handset Note Category settings for phonebook entries are not copied 7 3 1 Copying all entries 7 4 Error Messages ...

Страница 24: ...24 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 7 5 Troubleshooting ...

Страница 25: ...25 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E ...

Страница 26: ...26 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E ...

Страница 27: ...27 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E ...

Страница 28: ...28 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 7 6 For Service Hint Cross Reference Battery Charge P 17 Frequently Used Items Base Unit P 30 ...

Страница 29: ...29 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 8 Service Mode 8 1 Engineering Mode 8 1 1 Base Unit ...

Страница 30: ...ents Careless rewriting may cause serious damage to the computer system ID 00 10 00 14 Given value Bell length 01 F7 32 5sec 3 1E 3 sec 14 2 sec This is time until bell stops ringing Unit 100 ms Items Address Default Data New Data Remarks SMS MailBox1 Password 3F CF 3F D0 Given value 00 00 When New Data is input the password of MailBox1 becomes 0000 SMS MailBox2 Password 3F D1 3F D2 Given value 00...

Страница 31: ...31 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 8 1 2 Handset ...

Страница 32: ...less rewriting may cause serious damage to the handset Items Address Default Data New Data Possible Adjusted Value MAX hex Possible Adjusted Value MIN hex Remarks Sending level 00 06 Adjusted value Given value 6F 00 2 Receiving level 00 07 Adjusted value Given value 00 3F 3 Battery Low 00 04 70 4 Frequency 00 02 00 01 02 70 ID 00 10 00 14 Given value Desired Number hex Input Keys Desired Number he...

Страница 33: ... has registered Available models KX TG8421 KX TG8422 KX TG8423 KX TG8424 Refer to the following procedures Note BS Base Unit HS Handset If the max number of handsets are already registered to the base unit a new handset cannot be registered To register the handset refer to Registering a Handset to a Base Unit P 22 To cancel the handset refer to Deregistering a Handset P 22 To copy the handset phon...

Страница 34: ... number of handsets are already registered to the base unit a new handset cannot be registered To register the handset refer to Registering a Handset to a Base Unit P 22 To cancel the handset refer to Deregistering a Handset P 22 To copy the handset phonebook refer to Copying Phonebook Entries P 24 ...

Страница 35: ...KX TG8423 KX TG8424 only 8 3 1 Resetting both base unit and handset Both the base unit and the registered handset which you did the following steps to are reset Other registered handsets will not be reset Note 1 Refer to Registering a Handset to a Base Unit P 22 8 3 2 Resetting only handset The only handset is reset by doing the following steps to Note 2 The handset registration to the base unit i...

Страница 36: ...9 1 Troubleshooting Flowchart Flow Chart Cross Reference Check Power P 37 Bell Reception P 47 Check Battery Charge P 38 Check Link P 39 Check the RF part P 43 Check Handset Transmission P 46 Check Handset Reception P 46 Signal Route P 14 Check Caller ID P 46 Check TAM Operation P 47 ...

Страница 37: ...eck 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 ...

Страница 38: ...423E KX TG8424E KX TGA840E 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 37 Charge Circuit P 12 9 1 2 3 Charger Unit Cross Reference Charge Circuit P 12 ...

Страница 39: ...TG8422E KX TG8423E KX TG8424E KX TGA840E 9 1 3 Check Link 9 1 3 1 Base Unit Note 1 Refer to Troubleshooting by Symptom Base Unit and Charger Unit P 48 Cross Reference Check Point Base Unit P 48 Power Supply Circuit P 9 ...

Страница 40: ...40 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E Cross Reference Check Point Base Unit P 48 ...

Страница 41: ...41 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 9 1 3 2 Handset Cross Reference Check Point Handset P 52 Power Supply Circuit Reset Circuit P 12 ...

Страница 42: ...42 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E Cross Reference Check Point Handset P 52 ...

Страница 43: ...ck the RF part 9 1 4 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 If you need to register a handset refer to Registering a Handset to a Base Unit P 22 ...

Страница 44: ... TGA840E 9 1 4 2 RF Check Flowchart Each item 1 3 of RF Check Flowchart corresponds to Check Table for RF part P 45 Please refer to the each item Note 1 Base unit refer to G of Check Point Base Unit P 48 Handset refer to H of Check Point Handset P 52 ...

Страница 45: ...egister HS to be checked to Regular BU 2 Press Talk key of the HS to establish link 2 X tal Frequency confirmation 1 Check X tal Frequency 1 10 368 MHz 100 Hz 1 Check X tal Frequency 2 10 368 MHz 100Hz 3 Range Confirmation Normal HS BU Mode Normal mode 1 Register Regular HS to BU to be checked 2 Press Talk key of the Regular HS to establish link 3 Compare the range of the BU being checked with tha...

Страница 46: ... KX TGA840E 9 1 5 Check Handset Transmission Cross Reference Signal Route P 14 9 1 6 Check Handset Reception Cross Reference How to Check the Handset Speaker or Receiver P 71 Signal Route P 14 9 1 7 Check Caller ID Cross Reference Signal Route P 14 ...

Страница 47: ...ss Reference Telephone Line Interface P 10 Check Link P 39 How to Check the Handset Speaker or Receiver P 71 9 1 9 Check TAM Operation Cross Reference Power Supply Circuit P 9 Note 1 When replacing FLASH MEMORY IC421 TAM data need to be written to it Refer to Base Unit of Things to Do after Replacing IC or X tal P 68 ...

Страница 48: ...the current value 3 Adjust the 1 8V voltage of VDD1 executing command VDD XX XX is the value Q8 C75 C614 C61 IC7 C Charge Pump 2 5V Supply Confirma tion VDD5 1 Confirm that the voltage between test point VDD5 and GND is 2 5 V 0 1 0 3 V IC7 C625 C631 D Charge Pump 3 0V Supply Confirma tion VDD4 1 Confirm that the voltage between test point VDD4 and GND is 3 0 V 0 2 V IC7 C616 C630 E BBIC Confirmati...

Страница 49: ...0 dBm 2 Execute the command sendchar TST 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 19 0 dBm 25 0 dBm IC7 C802 C806 C808 C814 C820 C819 C822 C823 C825 C827 C826 C834 C851 C853 C859 C861 DA801 DA802 IC801 L80...

Страница 50: ...851 C853 C859 C861 DA801 DA802 IC801 L801 L803 C855 C858 R801 R807 R106 R109 Q9 C617 O Timing Confirmation ANTI_TP Follow steps 1 to 6 of J 7 Confirm that the Timing accuracy is 5 0 ppm When adjust the frequency of CLK in item G 15 ppm When do not adjust the frequency of CLK in item A IC7 C802 C806 C808 C814 C820 C819 C822 C823 C825 C827 C826 C834 C851 C853 C859 C861 DA801 DA802 IC801 L801 L803 C8...

Страница 51: ...rtion level is 5 at Receiver Volume Middle 150 Ω Load IC7 SA1 L1 L2 D3 Q3 Q4 R14 R15 R16 R17 D21 Q5 R19 R20 C14 C56 R117 R116 C141 R9 C22 C23 R 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 10 V 0 3 V R55 R56 D22 D23 S TAM Operation Confir mation 1 TAM Confirmation Execute the command sendchar VPI 2 Confir...

Страница 52: ... C1 C44 R12 R45 C40 C45 F1 B 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 RA61 R64 R66 C EEP ROM Confirmation 1 EEP ROM Confirmation Execute the command sendchar EPV 2 Confirm the returned Value Value for reference is written at EEPROM C SUM in Software_Version_Table xls ...

Страница 53: ...e current value 3 Check X tal Frequency 10 368 MHz 100 Hz 4 If the frequency is not 10 368 MHz 100 Hz adjust the frequency of CLK exe cuting the command sendchar sfr xx xx where xx is the value so that the reading of the frequency counter is 10 368000 MHz 5 Hz Note Clear the registered information for Base Unit before measurement because the Frequency will not possibly get stable due to the regist...

Страница 54: ...e current to 40 mA 3 Input 45 dBm 1KHz to MIC and measure Line output level 4 Confirm that the level is 8 dBm 2 dBm and that the distortion level is 5 at TEL Line 600 Ω Load 5 Input 20 dBm 1KHz to Line I F and measure Receiving level at REV and REV 6 Confirm that the level is 22 dBm 2 dBm and that the distortion level is 5 at Receiver vol 2 IC1 C12 D19 D20 C96 C97 R215 R27 RA4 C11 C13 R28 D3 D4 MI...

Страница 55: ...nditions 1 When customer s line has less line loss ex The customer is using optical fiber ISDN terminal adaptor or PBX In this case receiving signal is strong and it may affect transmission signal 2 When the other party is talking from noisy place ex The other party is using cellular phone The background noise is very loud In this case the noise from the other party i e surrounding noise may affec...

Страница 56: ...56 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 10 Disassembly and Assembly Instructions 10 1 Disassembly Instructions 10 1 1 Base Unit ...

Страница 57: ...57 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E ...

Страница 58: ...58 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 10 1 2 Handset ...

Страница 59: ...59 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 10 1 3 Charger Unit ...

Страница 60: ...60 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 10 2 How to Replace the Handset LCD ...

Страница 61: ... 1 2 JIG and PC Serial JIG JIG Cable PQZZ1CD300E PC which runs in DOS mode Batch file CD ROM for setting PNZZTG8421E 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 to DC JACK b...

Страница 62: ...EPROM 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 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 EEPROM Type wreeprom 01 23...

Страница 63: ...C23 C857 C856 C855 C52 C169 C170 C136 C171 C168 C149 C74 C837 C75 C145 C146 C150 C858 R20 R23 R18 R24 R116 R12 R13 R35 R32 R87 R86 L2R L1R L2T L1T BLK YLW RED GRN TP10 D23 D26 D21 Q2 C622 C14 C57 R19 R117 R29 R2 TP9 D22 D16 D15 Q5 GND_C Q8 C615 C430 C60 C630 C616 R424 R425 R430 R426 R429 R428 R427 IC421 TP16 sub TP16 TP15 sub TP15 RA80 RA1 GND LINE_DC GND CHARGE CHARGE GND RX TX L1T Q Q I Q A B C ...

Страница 64: ...arger Unit When connecting the simulator equipment for checking please refer to below 11 3 1 Bottom View Note A is referred to Check Point Charger Unit P 51 TP4 TP3 1 2 J1 D1 A F1 PbF PQLV30055 PQLV30056 PQUP11532Z Charge Charge 10 2 W Digital Volt Meter A DC POWER DC 6 5 V TP3 TP4 GND ...

Страница 65: ...t 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 PNZZTG8421E 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 the DC P...

Страница 66: ...ction Example rdeeprom Read 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 getchk Read checksum Type getchk wreeprom Write the data of EEPROM Type wreeprom 01 23 45 01 23 is address and 45 is data to be ...

Страница 67: ...74 L71 IC1 TEST JTAG RA61 BATT BATT RA4 D21 D22 D14 D13 BLK RED BLK RED D8 D7 D4 D3 Q4 Q7 Q11 Q12 Q2 C45 C36 C46 C860 C182 C819 C825 C827 C809 C810 C805 C 8 0 8 C861 C812 C859 C862 C803 C806 CN4 C74 C75 C4 C15 C150 C188 C97 C96 C822 C826 C41 X1 C820 C18 C11 C10 C12 C16 C331 C184 C17 C48 C50 C109 C82 3 2 1 1 4 8 5 1 C108 C86 C127 R65 R808 R801 R806 R803 R804 SP PHONE_SPEAKER R310 R309 R2 R215 R27 R...

Страница 68: ...cessful upgrade is displayed on the PC indicating downloading has finished 6 Detach the JIG cable then disconnect the DC Power 7 Connect the DC Power 8 Connect the JIG cable again and execute the command getchk then confirm the checksum value is correct If the downloading fails start again from step 1 9 Default batch file Execute the command default bat 10 Country version batch file Execute the co...

Страница 69: ...ding has finished 7 Detach the JIG cable then press the handset Power key to turn it on 8 Connect the JIG cable again and execute the command getchk then confirm the checksum value is correct If the downloading fails start again from step 1 9 Default batch file Execute the command default bat 10 Default batch file remaining Execute the Command TGA840DEFrevYY bat 3 11 Country version batch file Exe...

Страница 70: ...t Base Unit L Frequency Drift 35 kHz ms Check Point Base Unit M RX Sensitivity 1000 ppm Check Point Base Unit N Timing Accuracy 5 0 ppm 15 0ppm 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 I Modulation 370 30 370 30 kHz div Modulated width 690 kHz Check Point Handset J Frequency Offset 50 kHz 50 kHz...

Страница 71: ...se 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 ...

Страница 72: ... I A I 26 ADC0 P3_3 A I ADC0 A I A I 27 ADC1 INT0 P1_0 A I ADC1 A I A I 28 NTC ADC2 GND A I 29 SOCp GND A I 30 SOCn GND A I 31 CHARGE_CTRL A O N C A O O 0 32 P1_7 CHARGE A I CHARGE I I 33 PAOUTp P3_1 A O PAOUTp A O O 0 34 VDDPA VDDPA 35 PAOUTn P3_0 A O PAOUTn A O O 0 36 VBAT1 VBAT1 37 CP_C1x A I O N C A I O A I 38 CP_C2x A I O CP_C2x A I O A I 39 CP_C1y A I O N C A I O A I 40 VBAT2 VBAT2 41 CP_C2y...

Страница 73: ...66 P2_2 PCM_CLK CLK100 D O N C O_0 O 0 67 P2_1 ECZ2 PWM1 LED4 D O LED2 A I A I 68 P2_0 ECZ1 PWM0 LED3 D O LED1 A I A I 69 VDD2 1 8V 70 LDORF_CTRL A I LDORF_CTRL A I A I 71 RF_SUPPLY2 RF_SUPPLY2 72 RF0n D O ANT2 O_0 1 Hi Z 73 RFP4 D O PON O_0 1 Hi Z 74 RFP3 D O PSEL O_0 1 Hi Z 75 VDD_PADR A O VDD_PADRV A O A O 76 VSS_PADR1 GND 77 RF_TXp A O TXp A O A O 78 RF_TXn A O TXn A O A O 79 VSS_PADR2 GND 80 ...

Страница 74: ...1 L 27 ADC1 INT0 P1_0 N C L 28 NTC ADC2 A I ADC2 A I A I 29 SOCp A I SOCp A I A I 30 SOCn A I SOCn A I A I 31 CHARGE_CTRL A O CHARGE_CTRL A O A O 32 P1_7 CHARGE A I CHARGE A I I PD 33 PAOUTp P3_1 A O PAOUTp A O L 34 VDDPA VDDPA 35 PAOUTn P3_0 A O PAOUTn A O L 36 VBAT1 VBAT1 37 CP_C1x A O CP_C1x A O A O 38 CP_C2x A O CP_C2x A O A O 39 CP_C1y A O CP_C1y A O A O 40 VBAT2 VBAT2 41 CP_C2y A O CP_C2y A ...

Страница 75: ... LCD_RESET D O L 67 P2_1 ECZ2 PWM1 LED4 N C 68 P2_0 ECZ1 PWM0 LED3 D I BELL_LED_A D I I 69 VDD2 1 8V 70 LDORF_CTRL N C 71 RF_SUPPLY2 RF_SUPPLY2 72 RF0n D O ANT2 D O L 73 RFP4 D O PON D O L 74 RFP3 D O PSEL D O L 75 VDD_PADR A O VDD_PADRV A O 76 VSS_PADR1 GND 77 RF_TXp A O TXp A O 78 RF_TXn A O TXn A O 79 VSS_PADR2 GND 80 RFP2 D O TXON D O L 81 GND GND Pin No Description I O Connection at Normal mo...

Страница 76: ...at 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 12 3 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...

Страница 77: ...he 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 12 3 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 ...

Страница 78: ...tion To replace 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 12 4 3 How to Remove the Shield Case Note If you don t have special tools ex Hot air disordering tool conduct the following operations 1 Cut the case along perforation 2 Remove t...

Страница 79: ...79 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 1 Put the shield case 2 Solder the surroundings ...

Страница 80: ...80 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 12 5 Terminal Guide of the ICs Transistors and Diodes 12 5 1 Base Unit 12 5 2 Handset 12 5 3 Charger Unit ...

Страница 81: ...81 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E Memo ...

Страница 82: ...e with the development of new technology 13 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 13 1 3 Charger Unit Schematic Diagram Charger Unit Notes 1 DC voltage measurements are taken with voltmeter from the negative voltage line...

Страница 83: ...83 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E Memo ...

Страница 84: ...10 100n C60 CLK GND_C Q24 NC C504 NC GND NC C506 1 8V C837 NC CN5 10 CN5 9 CN5 8 CN5 7 CN5 6 CN5 5 CN5 4 CN5 3 CN5 2 CN5 1 1 5p C803 27n L801 DA802 1 2 3 DA801 1 2 3 10p C511 10p C512 10p C513 10p C514 10p C515 10p C516 C853 2p 1 8p C804 1 8p C802 Shield 1 2 3 4 5 6 3n L802 3n L803 GND C851 2p 10p C822 3 3p C805 3 3p C806 2 2p C810 2 2p C813 VDD4 C163 NC 10p C517 10p C518 10p C519 GND C520 NC GND ...

Страница 85: ...C10 500 1k RA1 1 2 3 4 5 6 7 8 C622 NC D22 LINE_DC NC R126 HAK_CL1 3 9 R56 TEST VDD3 VDD1 NC C1 10p C171 120k R36 C617 1u 10 5p C29 5p C30 C37 5p 1M R4 1M R6 180k R3 180k R5 C5 10n 10n C6 10n C42 10n C43 4 7M R42 4 7M R43 680p C3 680p C4 33n C54 C55 82n 1k R37 82k R32 82k R34 820p C52 820p C53 GND 10p C70 1 VSS_LNA1 2 RF_RXp 21 CIDINp VREFp 3 RF_RXn 4 VSS_LNA2 5 RFP1 6 RFP0 7 REF_RES 8 AVS_XTAL 22...

Страница 86: ...gram Base Unit_Operation ANS1 1 2 STOP 1 2 ERASE 1 2 MSG2 1 2 MSG1 1 2 RPT 1 2 SKIP 1 2 UP 1 2 DOWN 1 2 LOCAT INT 1 2 LED902 A K LED901 A K MEG_LED KEYIN2 KEYS_B ANS_LED KEYS_E KEYS_C KEYIN1 2APVCC KEYIN3 KEYS_D PCB KX TG8421 8422 8423 8424 SCHEMATIC DIAGRAM Base Unit_Operation ...

Страница 87: ...87 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E Memo ...

Страница 88: ...1 2 3 6 5 4 7 8 X1 10 368M 1 3 2 LED1 LED5 LED6 LED2 LED3 LED4 Q4 270 R305 270 R302 270 R301 270 R300 270 R304 270 R303 GND C138 C139 D10p C29 1 VSS_LNA1 2 RF_RXp 21 CIDINp VREFp 3 RF_RXn 4 VSS_LNA2 5 RFP1 6 RFP0 7 REF_RES 8 AVS_XTAL 22 RINGp P3_7 23 RINGn P3_6 24 RINGOUT RINGING P3_5 25 PARADET P3_4 26 ADC0 P3_3 27 ADC1 INT0 P1_0 28 NTC ADC2 41 CP_C2y 42 CP_VOUT1 LED1 43 CP_VOUT2 LED2 44 PON P1_6...

Страница 89: ... C809 GND PSEL RF_RXp 220 R807 1k R804 VDD_PADRV TXON GND 10p C812 10p C827 TXp GND GND GND GND 47 R805 TXn GND GND 10p C825 RF_RXn GND 3 3n C814 GND GND GND 10p C811 GND BATTERY D13 D14 GNDGND D10p C70 1 8V 2p C804 2p C802 1 5p C803 27n L801 C837 NC GND DA801 1 2 3 SHIELD 1 2 3 4 5 6 3p C861 L804 NC GND GND 2p C826 0 7p C820 10p C822 CARBON_CL1 MIC AP1 1 2 10p C860 3 6n L802 3 6n L803 1 6p C810 1...

Страница 90: ...90 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 13 5 Schematic Diagram Charger Unit J1 2 1 TP3 G TP2 TP1 TP4 R1 10 D1 A K F1 SCHEMATIC DIAGRAM Charger Unit ...

Страница 91: ... R14 R123 R804 R803 R805 R802 R808 R511 R542 R657 R129 R130 R56 R126 R801 R532 L1 SA1 L801 DA801 L803 IC801 IC1 D3 D5 D6 D9 Q3 Q22 C5 C9 C166 C12 C6 C10 C7 C859 C851 C853 C306 X1 SW1 C802 C 8 1 9 C834 C809 C813 C505 C29 C37 C501 TEST C502 C503 C504 C156 R17 R16 R6 R55 R43 R5 R15 R3 R4 R8 R7 R109 R106 R806 R807 R39 R38 R132 R135 R516 L2 L802 IC401 RA501 CN5 1 CN5 2 CN5 3 CN5 4 CN5 5 CN5 6 CN5 7 CN5...

Страница 92: ...6 R77 R78 R75 R34 R81 R33 R37 R36 R615 IC7 SPp DCP DCM SPm Q421 Q9 ANT2_TP CL2 C623 C626 C155 LINE_DC C18 C22 C56 C167 C141 C24 C23 C857 C856 C855 C52 C169 C170 C136 C171 C168 C149 C74 C837 C75 C145 C146 C150 C858 R20 R23 R18 R24 R116 R12 R13 R35 R32 R87 R86 L2R L1R L2T L1T BLK YLW RED GRN TP10 D23 D26 D21 Q2 C622 C14 C57 R19 R117 R29 R2 TP9 D22 D16 D15 Q5 GND_C Q8 C615 C430 C60 C630 C616 R424 R42...

Страница 93: ...nit_Operation 14 2 1 Component View ERASE STOP KEYS_E KEYS_C KEYS_B MEG_LED KEYIN2 KEYS_D KEYIN3 KEYIN1 ANS_LED 2APVCC ANS1 LOCAT INT A DOWN LED902 LED901 SKIP MSG1 MSG2 RPT UP KX TG7431 8421 8431H PNLB1092Z PbF KX TG8421 8422 8423 8424 CIRCUIT BOARD Base Unit_Operation Component View ...

Страница 94: ... R7 R30 R4 R8 R45 R300 R303 R301 R302 R305 R12 R42 R41 R40 R32 R33 R25 R203 R807 R22 R28 R332 R330 R331 R306 R304 R20 R307 L804 L802 L3 L9 L72 L73 L74 L71 IC1 TEST JTAG RA61 BATT BATT RA4 D21 D22 D14 D13 BLK RED BLK RED D8 D7 D4 D3 Q4 Q7 Q11 Q12 Q2 C45 C36 C46 C860 C182 C819 C825 C827 C809 C810 C805 C 8 0 8 C861 C812 C859 C862 C803 C806 CN4 C74 C75 C4 C15 C150 C188 C97 C96 C822 C826 C41 X1 C820 C1...

Страница 95: ...SP R 2 5 SW1 S1 TALK SOFT_C SOFT_A 3 4 6 7 CARBON_CL1 MIC MIC MIC 8 9 LED6 LED3 LED5 LED2 LED12 W_LED W_LED LED1 LED4 0 KX TGA840 CIRCUIT BOARD Handset_Main Bottom View CN3 1 18 C102 C100 C104 C106 C107 C103 C27 C105 R55 R54 R52 R51 R53 C28 C101 R50 A PbF PNLB1104Z KX TGA840XX EU ...

Страница 96: ...Circuit Board Charger Unit 14 4 1 Component View 14 4 2 Bottom View J1 R1 D1 A PQUP11532Z PbF PQLV30055 PQLV30056 CIRCUIT BOARD Charger unit Component View TP4 TP3 1 2 J1 D1 A F1 PbF PQLV30055 PQLV30056 PQUP11532Z CIRCUIT BOARD Charger unit Bottom View TP4 GND TP3 ...

Страница 97: ...E KX TGA840E 15 Exploded View and Replacement Parts List 15 1 Cabinet and Electrical Parts Base Unit Note 1 Attach the double side tape to the exact location described above 2 Refer to the spacer No 109 of Cabinet and Electrical Parts Handset P 98 ...

Страница 98: ... and Electrical Parts Handset Note 1 This cable is fixed by welding Refer to How to Replace the Handset LCD P 60 2 The rechargeable Ni MH battery P03Por HHR 4MRE is available through sales route of Panasonic 3 Attach the spacer No 123 to the exact location described above ...

Страница 99: ...99 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 15 3 Cabinet and Electrical Parts Charger Unit ...

Страница 100: ...100 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 15 4 Accessories and Packing Materials 15 4 1 KX TG8421EB EM EN ...

Страница 101: ...101 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 15 4 2 KX TG8422EB EM EN ...

Страница 102: ...102 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 15 4 3 KX TG8423EB EM EN ...

Страница 103: ...103 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 15 4 4 KX TG8424EB EM EN ...

Страница 104: ...104 KX TG8421E KX TG8422E KX TG8423E KX TG8424E KX TGA840E 15 4 5 KX TGA840EB EM EN ...

Страница 105: ... for KX TG8421EB ABS HB 2 PNGG1035Z2 GRILLE for KX TG8421EM EN ABS HB 3 PNKM1071Y1 CABINET BODY for KX TG8421EB ABS HB 3 PNKM1071X3 CABINET BODY for KX TG8421EM ABS HB 3 PNKM1071X2 CABINET BODY for KX TG8421EN ABS HB 4 K2ECYZ000001 JACK DC 5 L0AD02A00026 SPEAKER 6 PQHG10729Z RUBBER PARTS SPEAKER 7 PQHR11313Z GUIDE SPEAKER ABS HB 8 PQJJ1T039Y JACK MODULAR 9 PNKE1028Z1 CASE CHARGE TERMINAL for KX TG...

Страница 106: ...0 ERJ2GEJ102 1k R135 ERJ2GEJ103 10k R424 ERJ2GEJ103 10k R425 ERJ2GEJ274 270k Safety Ref No Part No Part Name Description Remarks R426 ERJ2GEJ561 560 R427 ERJ2GEJ561 560 R428 ERJ2GEJ561 560 R429 ERJ2GEJ332 3 3k R430 ERJ2GEJ100 10 R511 ERJ2GE0R00 0 R516 ERJ2GE0R00 0 R532 ERJ2GE0R00 0 R542 ERJ2GE0R00 0 R615 D0GA563ZA006 56k R657 ERJ2GEJ103 10k R801 ERJ2GEJ152 1 5k R802 ERJ2GEJ121 120 R803 ERJ2GEJ102 ...

Страница 107: ...OPERATIONAL P C BOARD ASS Y RTL DIODES LED901 PQVDBR1111C LED S LED902 PQVDBR1111C LED S Safety Ref No Part No Part Name Description Remarks 101 PNGP1047Z1 PANEL LCD for KX TGA840EB PMMA HB Safety Ref No Part No Part Name Description Remarks 101 PNGP1047Z3 PANEL LCD for KX TGA840EM PMMA HB 101 PNGP1047Z2 PANEL LCD for KX TGA840EN PMMA HB 102 PNGG1032Z1 GRILL FRAME for KX TGA840EB ABS HB 102 PNGG10...

Страница 108: ...2GEJ821 820 R28 ERJ2GEJ821 820 R30 ERJ3GEYJ273 27k R32 ERJ2GEJ104 100k R33 ERJ2GE0R00 0 R34 ERJ2GEJ104 100k R40 ERJ2GEJ103 10k R41 ERJ2GEJ103 10k R42 ERJ2GEJ103 10k R45 ERJ6RSJR10V 0 1 R50 ERJ2GEJ332 3 3k R51 ERJ2GEJ471 470 R52 ERJ2GEJ221 220 R53 ERJ2GEJ332 3 3k R54 ERJ2GEJ103 10k R55 ERJ2GEJ102 1k R63 ERJ2GEJ101 100 R64 ERJ2GEJ103 10k R66 ERJ2GEJ102 1k R71 ERJ3GEYJ820 82 R73 ERJ2GEJ820 82 R74 ERJ...

Страница 109: ...ARGER UNIT ASS Y without NAME PLATE for KX TGA840EM RTL 200 PNLC1007ZN CHARGER UNIT ASS Y without NAME PLATE for KX TGA840EN RTL 200 1 PNKM1076Z1 CABINET BODY for KX TGA840EB PS HB 200 1 PNKM1076Y4 CABINET BODY for KX TGA840EM PS HB 200 1 PNKM1076Y3 CABINET BODY for KX TGA840EN PS HB 200 2 PNJT1010Z CHARGE TERMINAL 200 3 PNKF1012Z1 CABINET COVER for KX TGA840EB EM ABS HB Safety Ref No Part No Part...

Страница 110: ...4 PNPK1890Z GIFT BOX P205 PNPD1155Z CUSHION Safety Ref No Part No Part Name Description Remarks A301 PQLV219EY AC ADAPTOR A302 PQJA87S CORD TELEPHONE A303 PNQX1708Z INSTRUCTION BOOK 1 A304 PNQW1548Z LEAFLET QUICK GUIDE A305 PQQW15876Z LEAFLET SMS GUIDE A306 PNKE1029Z1 HANGER BELT CLIP for KX TG8424EB EM ABS HB A306 PNKE1029Z3 HANGER BELT CLIP for KX TG8424EN ABS HB P301 PNPM1002Z PROTECTION COVER ...

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