Panasonic KX-TG4221N Service Manual Download Page 22

Page: 22 / 87

KX-TG4221N/KX-TG4222N/KX-TG4223N/KX-TG313SK/KX-TG4224N/KX-TG4225N/KX-TGA421N

4.7.3.

Charge Circuit

Circuit Operation:

When charging the handset on the Base Unit, the charge current is as follows;
DC+(5.5 V)



F301



R371



R372



D362



(Base)



(Handset)



...

Battery...
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.
Refer to Fig.101 in

Power Supply Circuit/Reset Circuit

(P.13).

4.7.4.

Battery Low/Power Down Detector

Circuit Operation:

“Battery Low” and “Power Down” are detected by BBIC which check the voltage from battery.
The detected voltage is as follows;

• Battery Low

Battery voltage: V(Batt) 2.25 V ± 50 mV

The BBIC detects this level and "

" starts flashing.

• Power Down

Battery voltage: V(Batt) 2.0 V ± 50 mV
The BBIC detects this level and power down.

4.7.5.

Speakerphone

The hands-free loudspeaker at SP+ and SP- is used to generate the ring alarm.

CHG +

R31
100

R8
100

GND

CHARGE (34)

CHARGE_CTRL (33)

1.2K

CHG -

GND

BATT +

BATTERY

2CELL

BATT +

GND

BBIC

IC5

R4
NC

R6
NC

GND

C121
NC

Summary of Contents for KX-TG4221N

Page 1: ...ase Unit Handset Charger Unit Expandable KX TG4221 1 TG4221 1 TGA421 Up to 6 KX TG4222 1 TG4221 2 TGA421 1 Up to 6 KX TG4223 1 TG4221 3 TGA421 2 Up to 6 KX TG313SK 1 TG4221 3 TGA421 2 Up to 6 KX TG4224 1 TG4221 4 TGA421 3 Up to 6 KX TG4225 1 TG4221 5 TGA421 4 Up to 6 Configuration for each model Information for optional accessories You can expand your phone system by registering optional handsets ...

Page 2: ...by in the Schematic Diagrams Circuit Board Diagrams Exploded Views and Replacement Parts List It is essential that these critical parts should be replaced with manufacturer s specified parts to prevent shock fire or other hazards Do not modify the original design without permission of manufacturer IMPORTANT INFORMATION ABOUT LEAD FREE PbF SOLDERING If lead free solder was used in the manufacture o...

Page 3: ...dset Reception 42 10 1 11 Check Caller ID 42 11 Disassembly and Assembly Instructions 43 11 1 Disassembly Instructions 43 11 1 1 Base Unit 43 11 1 2 Handset 45 11 1 3 Charger Unit 46 11 2 How to Replace the Handset LCD 47 12 Measurements and Adjustments 48 12 1 Equipment Required 48 12 2 The Setting Method of JIG 48 12 2 1 Connections Base Unit 48 12 2 2 Connections Handset 49 12 2 3 How to instal...

Page 4: ...X TG4222N 79 16 4 3 KX TG4223N KX TG313SK 80 16 4 4 KX TG4224N 81 16 4 5 KX TG4225N 82 16 4 6 KX TGA421N 83 16 5 Replacement Parts List 84 16 5 1 Base Unit 84 16 5 2 Handset 85 16 5 3 Charger Unit 86 16 5 4 Accessories and Packing Materials 86 16 5 5 Screws 87 16 5 6 Fixtures and Tools 87 ...

Page 5: ...etal hydride battery that is recyclable powers the product you have purchased Please call 1 800 8 BATTERY 1 800 822 8837 for information on how to recycle this battery 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 contains lead We will use PbF solder when discussing the lead...

Page 6: ... 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 as telephone directory and caller list or scrap P ...

Page 7: ...5 W 0 C 40 C 32 F 104 F 20 80 relative air humidity dry Approx 53 mm 96 mm 136 mm Approx 150 g Rechargeable Ni MH battery AAA R03 size 1 2 V 400 mAh Super Heterodyne PLL synthesizer Quadrature Discriminator 10 368 MHz 100 Hz Frequency Modulation 40 bit Tone DTMF Pulse Up to 48 digits Up to 32 digits Phonebook 6 days at Standby 10 hours at Talk 0 C 40 C 32 F 104 F 20 80 relative air humidity dry Ap...

Page 8: ... communication is performed Handset doesn t make up duplex in no free RF channels because of interference 1 Dummy Bearer Base unit sends Dummy data to the all stand by state handsets Handsets receive that data for synchronization and monitoring request from the base unit Base unit doesn t send Dummy bearer in no free RF channels because of interference 1 Note 1 It is a feature under FCC 15 regulat...

Page 9: ...nd demodulates it to digital data RXDATA BBIC IC1 converts RXDATA into a voice signal and outputs it to speaker Transmission A voice signal from microphone is encoded to digital data TXDATA by BBIC IC1 in a handset Then TXDATA goes to RF PART and it s modulated to 1 9 GHz The RF signal is amplified and fed to a antenna As for a base unit RF RF signal is received in two antennas BBIC IC501 compares...

Page 10: ... DC JACK RLY SIDE TONE CIRCUIT Q161 Q141 BELL DETECT HOOK BELL Q111 LIN LOUT RF_PART HSMIP HSMIN IC501 BBIC INUSE DETECT 2 INUSE DETECT 1 RECEIVE AMP DCIN 1 DCIN 2 IC302 VCCPA VBAT_APU VBAT VCC_FE VCC_IF VCC_VCO 3 0V DOUBOUT SCL SDA WP VDD ANS_LED IC601 FLASH MEMORY IC611 EEPROM MEMORY KEYS R151 R152 R131 R133 Q171 VBAT DL CS MSG_LED KEY 1 3 KEY C D E SPOUTN SPOUTP 3 0 V REGULATOR CLK DO STM CKM R...

Page 11: ...11 KX TG4221N KX TG4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N 4 3 Block Diagram Base Unit_RF Part KX TG4221 BLOCK DIAGRAM Base Unit_RF Part RXp RXn ANT1 TXp TXn ...

Page 12: ...ized Voice Pre recorded message The BBIC implements synthesized Voice utilizing the built in speech detector and a Flash Memory which stored the vocabulary Caller ID demodulation The BBIC implements monitor and demodulate the FSK DTMF signals that provide CID information from the Central Office Digital Switching The voice signal from telephone line is transmitted to the handset or the voice signal...

Page 13: ... 0V for peripherals and analog part is insulated from VBAT by Doubler of BBIC Circuit Operation 5 5V VBAT RSTN Reset pin 54 VBAT pin 10 pin 57 pin 9 pin 15 IC501 IC302 IC601 BBIC DOUBLER OUT For peripherals VDDC 1 2V AC Adaptor 3 0V REGULATOR FLASH IC611 EEPROM 3 0V STM CKM Receive Amp RF Part ANS LED MSG LED Startmonitor IC501 57pin VDDC 1 2 V VBAT Reset RSTN IC501_54 pin BBIC chip initialize CKM...

Page 14: ...N KX TG4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N 4 4 4 1 Charge Circuit The voltage from the AC adaptor is supplied to the charge circuits D361 R372 R371 F301 DCP 5 5V CHARGE CHARGE DCM D362 C351 ...

Page 15: ...al Circuit Pin 6 of BBIC turns Q141 ON OFF to make the pulse dialing Side Tone Circuit Basically this circuit prevents the TX signal from feeding back to RX signal As for this unit TX signal feed back from Q161 is canceled by the canceller circuit of BBIC C120 1000p R131 10M L1R R133 330k VDDC C111 0 047u R141 100k C142 K0 01u C124 NC L1T C132 K0 01u 3 0V R112 100k R113 10k C186 10p R142 2 7k C123...

Page 16: ...hook When on hook the voltage is monitored at pin 17 of IC501 There is no parallel connection if the voltage is 0 54 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 voltage is monitored at pin 18 of IC501 the presence absence of a parallel connection is determined by detecting the voltage changes If th...

Page 17: ... signal which is modulated in an FSK Frequency Shift Keying format Data 1 is a 1200 Hz sine wave and data 0 is a 2200 Hz sine wave There are two types of the message format which can be received i e the single message format and plural message format The plural message format allows to transmit the name and data code information in addition to the time and telephone number data Also the telephone ...

Page 18: ...the new call so he she can use this information to decide whether to take the new call Function The telephone exchange transmits or receives CAS and ACK signals through each voice RX TX route Then FSK data and MARK data pass the following route Telephone Line P101 C121 C122 R121 R122 IC501 25 24 If the unit deems that a telephone connected in parallel is in use ACK is not returned even if CAS is r...

Page 19: ...LSRn BELL_LED PAOUTp PAOUTn CKM STM CKM STM BBIC RESET CHARGE_CTL CHARGE WP CLK DATA P3_3 P3_7 P1_1 P1_4 CHARGE Q4 D7 MIC Receiver LED CP 3 0 V Monitor SP LCD KEYS RF PART ANT1 X1 10 368 MHz EEPROM CP 3 0 V BATTERY BELL BATTERY CP_LED BATTERY TXn TXp TXON RXON RF_RXn RF_RXp CP_VOUT2 BATTERY VDDPA CP_VOUT1 1 8V VDD2 VDD1 CP 3 0 V Q2 1 8V C44 D1 CP 3 0 V LCD BACK LIGHT CP_LED ...

Page 20: ...20 KX TG4221N KX TG4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N 4 6 Block Diagram Handset_RF Part KX TGA421 BLOCK DIAGRAM Handset_RF Part DA801 TXON RXON ANT RF_RXn RF_RXp ...

Page 21: ...als forming analyzing ACK or CMD signal All interfaces ex Key Detector Circuit Charge EEPROM LCD PLL Oscillator Detector Compress Expander Reception EEPROM IC3 Temporary operating parameters for RF etc 4 7 2 Power Supply Circuit Reset Circuit Circuit Operation When power on the Handset the voltage is as follows BATTERY 2 2 V 2 6 V BATT F1 Q2 1 8 V IC5 49pin 3 0V The Reset signal generates IC5 68 p...

Page 22: ...andset Refer to Fig 101 in Power Supply Circuit Reset Circuit P 13 4 7 4 Battery Low Power Down Detector Circuit Operation Battery Low and Power Down are detected by BBIC which check the voltage from battery The detected voltage is as follows Battery Low Battery voltage V Batt 2 25 V 50 mV The BBIC detects this level and starts flashing Power Down Battery voltage V Batt 2 0 V 50 mV The BBIC detect...

Page 23: ... R165 R177 C173 Q171 C178 R178 IC501 16 44 45 BASE_UNIT_RF_TX_ROUTE ANT ANT HANDSET_RF_RX_ROUTE IC5 37 35 Backside SP ANT BASE_UNIT_RF_RX_ROUTE IC501 46 47 73 74 IC601 IC601 IC501 73 74 28 C184 Q161 Q141 D101 P101 T R TEL LINE T R TEL LINE P101 D101 Q141 R165 R177 C173 Q171 C178 R178 IC501 16 73 74 IC601 IC601 IC501 73 74 29 31 SPEAKER IC501 28 C184 Q161 Q141 D101 P101 T R TEL LINE T R TEL LINE P1...

Page 24: ... signal route SIGNAL ROUTE IN 䊻㻌 ROUTE 䊻㻌 OUT HANDSET RF TX_ROUTE HANDSET RF RX_ROUTE BASE UNIT RF TX_ROUTE BASE UNIT RF RX_ROUTE IC5 86 87 L809 C812 DA801 C803 C801 ANT ANT C801 C803 DA801 C826 C863 C864 IC5 2 3 IC501 44 45 C819 C872 ANT1 ANT1 C872 C895 IC501 46 47 Note inside of Handset ...

Page 25: ...d refer to the Operating Instructions Instruction book on TSN Server 6 Installation Instructions Refer to the Operating Instructions Note You can download and refer to the Operating Instructions Instruction book on TSN Server 7 Operating Instructions Refer to the Operating Instructions Note You can download and refer to the Operating Instructions Instruction book on TSN Server ...

Page 26: ...s 1 7 Press a long confirmation beep will be heard 8 Press to return to standby mode After that turn the base unit power off and then power on 6 Enter 㸨㸨 New Data 1 4 Select Write EEP using or then press or V M M M Note To enter Set dial mode press M or at Set tel line It is necessary to turn on the power of base unit OFF Default Data C a l l e r l i s t V I n i t i a l s e t t i n g V S e t t e ...

Page 27: ...to the table below Items Address Default Data New Data Remarks Frequency 00 07 00 08 00 01 Use these items in a READ ONLY mode to confirm the contents Careless rewriting may cause serious damage to the computer system ID 00 02 00 06 Given value Desired Number hex Input Keys Desired Number hex Input Keys 0 0 A Flash 0 1 1 B Flash 1 C Flash 2 D Flash 3 E Flash 4 9 9 F Flash 5 ...

Page 28: ...ys 5 Enter ە ە ە ە Address 1 7 Press a long confirmation beep will be heard 8 Press to return to standby mode After that remove and reinsert the batteries Press the Power button for about 1 second if the power is not turned on 6 Enter 㸨㸨 New Data 1 4 Select Write EEP using or then press or V M M OFF Naviga Volume key tor key CLEAR Dial keypad MENU OK MUTE PAUSE OFF FLASH CALL WAIT M M M Default D...

Page 29: ... ONLY mode to confirm the contents Careless 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 Battery Low 00 11 00 12 00 00 2 Frequency 00 07 00 08 00 01 ID 00 02 00 06 Given value Desired Number hex Input Keys Desired Number hex Input Keys 0 0 A Flash 0 1 1 B Flash 1 C Flash 2 D Flash 3 E F...

Page 30: ... TG4225N KX TGA421N 9 Service Mode 9 1 How to Clear User Setting Handset Only Handset Press simultaneously until a beep sound is heard Then single handset is initialized The contents of user setting are reset to factory default Usage time is not cleared 2 5 8 0 ...

Page 31: ...nsmission P 42 Check Handset Reception P 42 Check Caller ID P 42 Power ON Base Unit OK FLOW CHART Check Power OK Playback Pre Message Check Playback Record OK Check Record Range Check the RF part Handset Voice Transmission Check Handset Transmission Handset Voice Reception OK OK OK Check Handset Reception Caller ID function Check Caller ID Caller ID Error No voice No voice No charge Not playback N...

Page 32: ...erted into AC outlet 1 Is output voltage of AC adaptor 5 5 V YES Check AC Adaptor Check VDDC 1 2 V Test Point VDDC OK Check Power Supply Circuit NO NO NO NO RSTN Reset High YES Check Reset Circuit Check Xtal CLK 13 824 MHz YES Check X501 Check BBIC Check Power Supply Circuit Reset Circuit Check X1 Is the voltage of TP 1 8 V about 1 8 V Is the voltage of TP BATTERY 2 3 V more Check the battery and ...

Page 33: ...Parallel Connection Detect Circuit Auto Disconnect Circuit P 16 Note Flash Memory is IC601 BBIC is IC501 Check Bell signal OK Check Telephone Line Interface Bell Does the unit catch line YES Check Telephone Line Interface OFF HOOK Check Line In Pin 16 of BBIC Check ICM Recording in Signal Route NO OK Check Auto Disconnect Circuit OK Check Parallel Connection Detection Circuit OK Check BBIC and Fla...

Page 34: ...ck Power Supply Circuit Check output of BBIC Pin 29 31 OK Check BBIC and Flash Memory Check Speaker and its surroundings NO NO Check Charge Circuit of Base Unit Check Handset Plug in the AC Power source Charge Handset on Base Unit Is the voltage of two charge contacts about 3 V or more OK NO Check Charge Contacts at Base Unit from mechanical point of view YES Is BBIC IC5 34 high at charge state Ch...

Page 35: ...ute the command SFR then check the TP_CKM IC501 57pin To adjust frequency send command SFR until the frequency counter becomes13 824 MHZ 55HZ Check around Power Supply Circuit Adjust 3 0V voltage to 3 0 V Does Base Unit make link with normal working Handset Check around X501 and RF module and adjust clock frequency NO NO NO NO YES YES Is the voltage of VBAT about 3 0 V Check the RF part Does the R...

Page 36: ...ounter becomes10 368 MHz 55HZ Refer to Things to Do after Replacing IC or X tal P 54 for Handset Check around Power Supply Circuit Reset Circuit Does Handset make link with Base Unit Correct working unit Check around X1 and RF module and adjust clock frequency NO NO NO NO Is the voltage of TP VBAT about 2 2 2 8 V Is the voltage of TP 1 8V about 1 8 V YES YES YES YES Is the voltage of 36 Pin IC5 ab...

Page 37: ...S 1 and Regular BU 2 2 a Re register regular HS Normal mode to base unit to be checked If this operation fails in some ways the base unit is defective b Re register handset to be checked to regular BU Normal mode If this operation fails in some ways the handset is defective Base unit is defective Handset is defective START Registration of Regular HS to base unit Registration of handset to Regular ...

Page 38: ... Please refer to the each item Note 1 Refer to Check Link P 35 Start Link confirmation Normal 1 Control signal confirmation X tal Frequency confirmation TX confirmation RX confirmation Range confirmation Normal TEST RANGE Check Check BBIC interface parts RF Block BBIC on BU HS P C B Adjust X tal Frequency 1 Check TX Block Check RX Block GOOD 6 2 3 4 5 OK OK OK OK NG NG NG NG NG NG OK OK ...

Page 39: ...waveform of BU 1 and RXDATA waveform of Regular HS by Digital Oscilloscope 1 Place Regular BU 15 cm away from a checked HS 2 Confirm TXDATA waveform of HS 2 and RXDATA waveform of Regular BU by Digital Oscilloscope 4 RX confirmation Regular HS BU Mode Test TX_Burst Mode BU HS Mode Test RX Mode 1 Place Regular HS 15 cm away from a checked BU 2 Confirm RXDATA waveform of BU 1 and TXDATA waveform of ...

Page 40: ...ing to CHART1 3 At distance of about 20m between 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 setting Checked unit High TX power 1 Regular unit Low TX power 1 1 Register Regular HS to BU to be checked 2 Set TX Power of the BU and the Regular HS according to CHART1 3 At distance of about 20m between HS and BU Link ...

Page 41: ...within 90 seconds 6 Handset Press OK then wait until a long beep sounds Note L While registering Base in registering mode is displayed on all registered handsets A handset can cancel its own registration or the registration of another handset that is stored to the base unit This allows the handset to end its wireless connection with the system 1 MENU 2 V Initial setting i OK 3 V Registration i OK ...

Page 42: ...ling Line Identification Caller ID Call Waiting Caller ID P 17 Note Make sure the format of the Caller ID service of the Telephone company that the customer subscribes to It is also recommended to confirm that the customer is really a subscriber of the service Check MIC of handset Check handset Tx in Signal Route Check speaker of handset Check handset Rx in Signal Route YES Did bell ring Message i...

Page 43: ...G4224N KX TG4225N KX TGA421N 11 Disassembly and Assembly Instructions 11 1 Disassembly Instructions 11 1 1 Base Unit ձ Remove the 4 screws to remove the cabinet cover ղ Remove the solders ճ Remove the main P C board ճ Main P C board ձ 4 screws Solders ղ ...

Page 44: ...44 KX TG4221N KX TG4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N մ Remove the 2 screws to remove the charge case and the operational P C board Operational P C board Chage case մ 2 screws ...

Page 45: ...it upward յ Remove the solders and tape Remove the 2 screws to remove the 2 charge terminals ն շ Remove the screw to remove the main P C board Main P C board յ Screw շ 2 charge terminals ն ն 2 screws Cabinet cover Cabinet body Cabinet cover 2 screws ձ Solders and Tape Insert a plastic card Ex Used SIM card etc between the cabinet body and the cabinet cover then pull it along the gap to open the ca...

Page 46: ...4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N 11 1 3 Charger Unit ձ Remove the cabinet cover ղ Remove the solders to remove the AC adaptor ղ Solders 2 charge terminals Cabinet cover ձ Remove the 2 charge terminals ճ AC Adaptor ճ ...

Page 47: ...on the P C board is not damaged Fit the heatseal of a new LCD Rubber of Soldering Iron Part No PQZZ430PRB Tip of Soldering Iron Part No PQZZ430PIR Heatweld with the tip of the soldering iron about 5 to 8 seconds in case of 60W soldering iron New LCD 0 2 mm 0 2 mm P C board If interval tolerance between center lines is less than 0 2 mm it is o k Horizontal Interval Tolerance Vertical Interval Toler...

Page 48: ... precisely adjust like a mass production 12 2 The Setting Method of JIG Preparation Serial JIG cable PQZZ1CD300E PC which runs in DOS mode Batch file CD ROM for setting PNZZTG4221M Note If you have the JIG Cable for TCD500 series PQZZ1CD505E change the following values of resistance Then you can use it as a JIG Cable for both TCD300 and TCD500 series It is an upper compatible JIG Cable 12 2 1 Conn...

Page 49: ... Battery to BATT and BATT Connect the JIG cable GND black to GND Connect the JIG cable UTX yellow to UTX and URX red to URX Note COM port names may vary depending on what your PC calls it 1 2 3 DC Power or Battery 2 UGND black 3 To Serial Port com port 1 JIG Cable PC URX yellow 3 UTX red Handset P C board 1 BATT BATT UGND UTX URX ...

Page 50: ...T_COM X D PNZZTG READID 00 52 4F A8 A8 D PNZZTG DOSKEY D PNZZTG Example error happens C Documents and Settings D D CD PNZZTG D PNZZTG SET_COM X D PNZZTG READID ޓ CreateFile error ERROR 10 Can t open serial port D PNZZTG Example for Windows On your computer click Start select Programs All Programs for Windows XP Windows Server 2003 then click MS DOS Prompt for Windows 95 Windows 98 Or Accessories M...

Page 51: ...51 TCK Q111 URX TDI C476 C479 UTX STM CKM P15 IC601 IC611 Q161 R111 Q171 R112 R113 R114 R121 R122 R331 R332 C111 C112 C113 TMS VDDC L1R L1T C120 C121 C122 C123 C124 R161 R162 R164 C133 R172 5 5V C521 R177 C331 C163 D113 C178 C181 VREF C184 C185 C186 D133 Q652 R652 R504 R502 R503 RA611 R151 C132 R133 R131 C175 R171 R175 C173 C176 R176 C151 R163 C168 UGND D153 R152 C152 A SP DC TEL BRN YLW ORG BLU P...

Page 52: ...KM C72 C73 C48 C98 C2 C43 C41 C47 C802 C801 C813 C826 C825 C811 C57 C99 C96 C865 C804 C54 C40 C113 C147 C3 C340 C5 R231 R203 R806 R807 R63 R57 R95 R94 R66 R808 R20 R30 R4 R7 R8 L802 RA4 RA32 RA61 RA40 D4 D7 D3 C105 C71 C200 C206 C201 C70 STM RST C45 C46 C17 C172 C820 C809 C803 C812 C805 C806 C866 C863 C864 C823 C810 X1 C822 C837 C18 C11 C97 C344 C13 C12 R28 C38 C49 C74 C75 C121 2 5A F1 C35 C150 R5...

Page 53: ...ed in The Setting Method of JIG P 48 Items How to download Required adjustment EEPROM IC611 Adjusted parameter data is stored in memory country version batch file default batch file etc 1 Change the address 0001 of EEPROM to 55 to download the data 2 Default batch file Execute the command default bat 3 Country version batch file Execute the command TG4221US_WW_RevXXX bat 1 4 Clock adjustment X tal...

Page 54: ...ndchar PAD sendchar LED 0 sendchar CRX 0 1 sendchar AD1 It assumes that the return value is XX a 6c XX 71 No need to adjust b XX 6A 6B Need to adjust XX 72 74 Need to adjust Write AD value of 2 25 V to EEPROM ex read data XX 6A write data YY 6A read data XX 73 write data YY 73 EEPROM 0009 Low Voltage write YY Execute the command wreeprom 00 09 01 YY EEPROM 000A No Voltage write YY 1D Execute the c...

Page 55: ...G4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N 12 6 Frequency Table Ch hex TX RX Frequency MHz Channel 0 00 1928 448 Channel 1 01 1926 720 Channel 2 02 1924 992 Channel 3 03 1923 264 Channel 4 04 1921 536 ...

Page 56: ... damage the PCB foil Hot Air Desoldering Tool Temperature 608 F 68 F 320 C 20 C 13 1 2 Caution 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 13 1 3 How to Remove the Shield Case Note If you don t have special tools ex Hot air dis...

Page 57: ...SK KX TG4224N KX TG4225N KX TGA421N 13 1 4 How to Install the Shield Case Note If you don t have special tools ex Hot air disordering tool conduct the following operations Shield case s No PNMC1013Z 1 Put the shield case 2 Solder the surroundings ...

Page 58: ...ce 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 13 2 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 ...

Page 59: ...fully 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 13 2 5 How to Remove a Solder Bridge When a Solder Bridge is found after soldering the bottom of the IC re...

Page 60: ... 5 PNWI1TG4221H PNWI2TG4221H C2HBCY000077 DSC7003S0L Cathode Anode B0ECKM000008 B0EDER000009 C E B B1ACGP000008 3 2 1 4 C0DBEYY00102 1 88 67 23 44 22 66 45 Reverse View DA2J10100L Anode Cathode Cathode Anode C B E 1 4 8 5 PNWITGA421R Anode Cathode B0BC4R3A0006 B1ADGE000012 B1ABGE000011 B1ADCF000040 B1GBCFGA0021 B0DDCD000001 B3ACB0000216 C1CB00003852 Cathode Anode Ѝ Ѝ Reverse View Anode Cathode Rev...

Page 61: ...agrams may be modified at any time with the development of new technology 14 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 Important Safety Notice Components identified by mark have special characteristics important for sa...

Page 62: ...95 2p C897 NC GND GND C819 10p L804 NC C896 NC R506 10k R502 10k R503 10k R504 10k TCK TMS TDI TDO UTX URX SW1 NC 1 2 SHORT1 SHORT2 SHORT4 SHORT5 45 TXp 46 RXp 47 RXn 48 GND_RF 49 TRSW_p 50 ANT_n 51 ATST_n 52 ATST_p 40 VDD_IF 41 VCC_FE 42 ANT 43 TRSW_n 44 TXn 53 TEST 54 RSTN 55 NC 56 VCC_VCO 57 GPIO 27 58 VDDUSB 59 DM_USB GPI28 60 DP_USB GPI29 61 VDDC1 62 JTAG_TDO 63 JTAG_TDI 64 JTAG_TCK 65 JTAG_T...

Page 63: ...0k C152 0 01u R177 1k Q171 Q161 B C E C161 10u R165 27k 3 0V C164 NC R331 68k R332 33k RA611 3 3k 1 2 3 4 6 7 8 RA151 1k 1 2 3 4 L474 NC L476 NC C342 0 1u C181 NC C184 1u C321 1u C506 1u C510 1u C163 NC D101 1 4 3 2 C507 2 2u R510 10k IC611 1 A0 2 A1 6 SCL 7 WP 3 A2 8 VCC 4 GND 5 SDA C341 330u C101 680p C102 680p C121 680p C122 680p R163 39 R152 130k R176 1k R175 3 9k R172 680k R371 1 R372 1 VREF ...

Page 64: ...chematic Diagram Base Unit_Operation KX TG4221 SCHEMATIC DIAGRAM Base Unit_Operation NC No Components 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 ...

Page 65: ...65 KX TG4221N KX TG4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N Memo ...

Page 66: ...45 NC GND GND CP 3 0V GND C150 16V NC CN51 9 VOUT CN51 6 VDD CN51 2 RS CN51 10 CAP2 CN51 13 CAP1 CN51 7 V0 CN51 11 CAP2 CN51 4 SI CN51 5 SCL CN51 16 GND CN51 12 CAP1 CN51 3 CS CN51 14 VSS CN51 8 VR CN51 1 GND CN51 15 RES DOWN 1 2 UP 1 2 LEFT 1 2 RIGHT 1 2 D1 CKM CP3V X1 10 368M 1 3 2 R2 NC R6 NC R4 NC C204 0 1u Q2 Q9 C5 NC R8 100 Q4 R31 100 D7 C1 220u 6 3 C2 220u 6 3 C7 NC GND IC3 16K 1 NC1 2 NC2 ...

Page 67: ...0p C98 10p GND GND GND C190 K1u GND R94 1 R95 1 GND G ND GND GND C95 1000p C94 1000p ANT1_TP GND 1 8V C805 2 4p C806 2 7p C810 1 1p C813 1 1p L802 5 1n L803 5 1n C809 100p C820 0 5p C804 2p C802 2p MIC AP1 1 2 ANT Short ANT Short GND D21 4 3V D22 4 3V D13 4 3V D14 4 3V GND C801 10p R808 33 21 MICh 22 VREFm 23 LSRp 24 LSRn 25 AVD 26 LDO_CTRL 27 ADC0 P3_3 28 ADC1 INT0 P1_0 29 NTC ADC2 30 SOCp 31 SOC...

Page 68: ...68 KX TG4221N KX TG4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N Memo ...

Page 69: ...5 R501 R506 R509 D472 D473 C101 C102 R141 C501 C502 C503 C504 C505 C506 C507 C508 C509 R160 X501 R165 C515 C516 C517 C518 C519 C520 C522 R371 R372 C142 C342 D101 C161 C164 C167 C171 IC501 D361 D362 C896 C897 C510 C511 C513 GAP1 SA103 SA102 R115 C115 Q142 R145 R510 R142 D143 D142 C351 C321 R321 R322 IC302 C341 HAK_CL1 L803 L804 R507 R168 MSG_LED KEYS_C KEYS_D KEYS_E LED_VDD KEYIN1 KEYIN2 KEYIN3 NC ...

Page 70: ...X STM CKM P15 IC601 IC611 Q161 R111 Q171 R112 R113 R114 R121 R122 R331 R332 C111 C112 C113 TMS VDDC L1R L1T C120 C121 C122 C123 C124 R161 R162 R164 C133 R172 5 5V C521 R177 C331 C163 D113 C178 C181 VREF C184 C185 C186 D133 Q652 R652 R651 R504 R502 R503 RA611 R151 C132 R133 R131 C175 R171 R175 C173 C176 R176 C151 R163 C168 UGND D153 R152 C152 A SP DC TEL BRN YLW ORG BLU PNLB2154Z GRY PUR PbF CHG Q6...

Page 71: ...KX TGA421N 15 2 Circuit Board Base Unit_Operation KX TG4221 CIRCUIT BOARD Base Unit_Operation Component View LED901 LED902 MSG MSG2 MSG3 MSG4 RPT SKIP UP DOWN LOCAT STOP ERASE3 ERASE4 ERASE2 STOP2 STOP3 LOCAT2 LOCAT3 ANS4 ANS3 ANS2 ANS ERASE A STOP4 LOCAT4 PNLB2164Z PbF ...

Page 72: ...72 KX TG4221N KX TG4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N Memo ...

Page 73: ...103 C205 C106 C104 C814 C44 L803 C341 C10 C342 C345 C50 C56 C55 C51 C58 C59 C53 D1 C1 C7 C94 C95 C52 C190 C189 L47 C188 CKM C72 C73 C48 C98 C2 C43 C41 C47 C802 C801 C813 C826 C825 C811 C57 C99 C96 C865 C804 C54 C40 C113 C147 C3 C340 C5 R231 R203 R806 R807 R63 R57 R95 R94 R66 R808 R20 R30 R4 R7 R8 L802 RA4 RA32 RA61 RA40 D4 D7 D3 C105 C71 C200 C206 C201 C70 STM RST C45 C46 C17 C172 C820 C809 C803 C...

Page 74: ...23N KX TG313SK KX TG4224N KX TG4225N KX TGA421N 15 3 2 Bottom View KX TGA421 CIRCUIT BOARD Handset_Main Bottom View 1 SP 2 5 S1 R TALK RIGHT LEFT SOFT_A SOFT_B SOFT_C UP DOWN CN51 3 4 6 7 MIC CARBON_CL1 8 9 LED12 LED21 LED22 LED23 0 A ...

Page 75: ...2N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N 16 Exploded View and Replacement Parts List 16 1 Cabinet and Electrical Parts Base Unit A A 13 7 12 1 4 5 6 2 3 10 11 9 8 14 Ref No Figure A 2 6 x 8mm 16 15 PCB1 PCB2 ...

Page 76: ...LCD P 47 2 The rechargeable Ni MH battery HHR 4DPA is available through sales route of Panasonic 3 Attach the SPACER No 121 to the exact location described above 103 104 E103 E102 E101 1 111 115 116 106 107 110 113 B 118 119 122 123 121 3 101 105 109 E104 112 B E105 MIC100 PCB100 108 B 120 117 114 Ref No 2 8 mm B Figure 102 2 Spacer No 121 Battery cover Put it in the center Stick it between ribs ...

Page 77: ...77 KX TG4221N KX TG4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N 16 3 Cabinet and Electrical Parts Charger Unit 200 200 1 200 3 201 200 4 200 2 200 5 ...

Page 78: ...78 KX TG4221N KX TG4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N 16 4 Accessories and Packing Materials 16 4 1 KX TG4221N A1 A2 A3 A4 A5 P1 P2 1 Note 1 This pad is piece of Ref No P2 PAD ...

Page 79: ...79 KX TG4221N KX TG4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N 16 4 2 KX TG4222N A103 A104 A102 P102 1 A105 P101 A101 Note 1 This pad is piece of Ref No P102 PAD ...

Page 80: ...80 KX TG4221N KX TG4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N 16 4 3 KX TG4223N KX TG313SK A203 A204 1 1 A202 A205 P202 P201 A201 Note This pad is piece of Ref No P202 PAD ...

Page 81: ...81 KX TG4221N KX TG4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N 16 4 4 KX TG4224N A303 A304 1 A302 A305 P302 P301 A301 Note 1 This pad is a piece of Ref No P302 PAD 1 1 ...

Page 82: ...X TG4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N 16 4 5 KX TG4225N A403 A404 A402 A405 P402 P401 A401 Note 1 This pad is a piece of Ref No P402 PAD 1 1 1 2 2 This pad is a piece of Ref No P401 GIFT BOX ...

Page 83: ...83 KX TG4221N KX TG4222N KX TG4223N KX TG313SK KX TG4224N KX TG4225N KX TGA421N 16 4 6 KX TGA421N A501 P502 P501 Note 1 This pad is a piece of Ref No P501 GIFT BOX 1 ...

Page 84: ...sible Resistor ERF Cement Resistor Type ECFD Semi Conductor ECQS Styrol ECUV PQCUV ECUE Chip ECQMS Mica ECCD ECKD ECBT F1K ECUV Ceramic ECQE ECQV ECQG Polyester ECEA ECST EEE Electlytic ECQP Polypropylene Wattage Type Voltage Of Capacitor 10 16 1 8W 14 25 1 4W 12 1 2W 1 1W 2 2W 3 3W Voltage ECQ Type ECQG ECQV Type 05 50V 1 100V 2 200V ECSZ Type 0J 6 3V 1A 10V 1C 16V 1E 25 25V 1V 35V 50 1H 50V 1J 1...

Page 85: ...C516 ECUE1A104KBQ 0 1 C517 ECUE1A104KBQ 0 1 C518 ECUE1A104KBQ 0 1 C519 ECUE1A104KBQ 0 1 C520 ECUE1A104KBQ 0 1 C521 ECUE0J105KBQ 1 C601 ECUE1A104KBQ 0 1 C611 ECUE1A104KBQ 0 1 C819 ECUE1H100DCQ 10p C871 F1G1H1R5A765 1 5p C872 F1G1H1R3A765 1 3p C873 F1G1H2R0A765 2p C874 ECUE1H150JCQ 15p S C895 F1G1H2R0A765 2p OTHERS P101 D4DAY220A022 THERMISTOR F301 K5H302Y00003 FUSE X501 H0J138500011 CRYSTAL OSCILLA...

Page 86: ...1H100DCQ 10p C103 ECUE1H101JCQ 100p C105 ECUE1H101JCQ 100p C150 ECUV1C104KBV 0 1 C172 ECUE0J105KBQ 1 C188 ECUE0J105KBQ 1 C190 ECUE1A104KBQ 0 1 C191 ECUE0J105KBQ 1 C201 ECUV1C105KBV 1 C204 ECUV1C104KBV 0 1 C205 ECUE0J105KBQ 1 Safety Ref No Part No Part Name Description Remarks C801 ECUV1H100DCV 10p C802 F1G1H2R0A765 CERAMIC CAPACITOR C803 F1G1H1R5A765 CERAMIC CAPACITOR C804 F1G1H2R0A765 CERAMIC CAP...

Page 87: ...204 PNQW2611Z LEAFLET A205 PQKL10088Z3 STAND WALLMOUNT ABS HB P201 PNPK3641001Z GIFT BOX for KX TG4223N only P202 PNPD1718Z PAD Safety Ref No Part No Part Name Description Remarks A301 PNLV226Z AC ADAPTOR A302 PQJA10075Z CORD TELEPHONE A303 PNQX5754Z INSTRUCTION BOOK 1 A304 PNQW2611Z LEAFLET A305 PQKL10088Z3 STAND WALLMOUNT ABS HB P301 PNPK3642001Z GIFT BOX P302 PNPD1719Z PAD Safety Ref No Part No...

Search results

Summary of Contents for KX-TG4221N

Reviews:

Related manuals for KX-TG4221N

Brands by name

Popular brands

Panasonic KX-TG4221N, Service Manual

Search results

Summary of Contents for KX-TG4221N

Reviews:

Related manuals for KX-TG4221N

Brands by name

Popular brands