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Panasonic KX-TG2220BXB Service Manual Download Page 57

18.7. Reception Signal

The voice signal from the base unit is output to DSP (33) (HSSOUT). This signal is led to the headset jack (CN203) and DSP (44)
(HSMIP). The signal input to DSP (44) is inverted and output to DSP (34) (LOUTO).The signal through the headset jack is inverted,
then output from DSP (34) to drive the speaker. When the headset is inserted to the jack, the voice signal is cut at the jack, so the
sound does not come out from the speaker, but from the headset only.

57

KX-TG2220BXB / KX-TG2220B XF / KX-TG2220B XS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS

Summary of Contents for KX-TG2220BXB

Page 1: ...ing and distribution is a violation of law KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS 2 4GHz Digital Cordless Phone Black Version Blue Version Silver Version for Asia Middle Near East and Other areas Telephone Equipment ORDER NO KM40309202C3 ...

Page 2: ...nt Battery Low Detector Voltage 39 12 5 Base Unit Reference Drawing 40 12 6 Handset Reference Drawing 41 12 7 Frequency Table 42 13 DESCRIPTION 43 13 1 Frequency 43 13 2 Time Division Duplex TDD operation 43 13 3 Signal Flowchart in the Whole System 44 14 EXPLANATION OF BBIC Base Band IC DATA COMMUNICATION 45 14 1 Calling 45 14 2 To Terminate Communication 45 14 3 Ringing 45 14 4 Ports for Transmi...

Page 3: ... Base Unit 67 28 2 Handset 69 28 3 Accessories and Packing Materials 71 29 FOR SCHEMATIC DIAGRAM 72 29 1 Base Unit SCHEMATIC DIAGRAM BASE UNIT 72 29 2 Handset SCHEMATIC DIAGRAM HANDSET 72 29 3 Memo 73 30 SCHEMATIC DIAGRAM BASE UNIT 74 30 1 Main 74 30 2 Operation 76 30 3 Memo 77 31 SCHEMATIC DIAGRAM HANDSET 78 32 CIRCUIT BOARD BASE UNIT 80 32 1 Main 80 32 2 Operation 82 33 CIRCUIT BOARD HANDSET 84 ...

Page 4: ... PbF solder will tend to splash if it is heated much higher than its melting point approximately 1100 F 600 C If you must use Pb solder on a PCB manufactured using PbF solder remove as much of the original PbF solder as possible and be sure that any remaining is melted prior to applying the Pb solder When applying PbF solder to double layered boards please check the component side for excess which...

Page 5: ...ithout notice 1 2 1 2 Operation LED900 LED903 LED902 LCD900 CN901 30 1 1 3 4 5 6 7 8 9 10 29 26 27 11 18 17 16 15 22 21 20 19 23 24 25 30 12 13 14 MIC PbF MICP MICM R904 R910 R911 R901 R903 C900 C901 R902 R900 R906 R907 R905 C902 Marked Component View Note The location of the PbF mark is subject to change without notice 5 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BX...

Page 6: ...tatic electricity When repairing the following precautions will help prevent recurring malfunctions 1 Cover the plastic parts boxes with aluminum foil 2 Ground the soldering irons 3 Use a conductive mat on the worktable 4 Do not touch IC or LSI pins with bare fingers 3 CAUTION Danger of explosion if battery is incorrectly replaced Replace only with the same or equivalent type recommendenced by the...

Page 7: ...ry strength may not be indicated correctly if the battery is disconnected and connected again even after it is fully charged In that case by recharging the battery as mentioned above you will get a correct indication of the battery strength 7 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 8: ...4 4 Battery Strength 4 5 Battery Replacement 4 6 Battery information 8 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 9: ...5 LOCATION OF CONTROLS 5 1 Base Unit 9 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 10: ...5 2 Handset 10 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 11: ...6 DISPLAY 6 1 Troubleshooting 11 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 12: ...12 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 13: ...7 SETTINGS 7 1 Connections 13 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 14: ...7 2 Dialing Mode 7 3 Line Mode Handset 14 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 15: ...7 4 Voice Enhancer Technology 15 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 16: ...7 5 Direct Commands Note 1 Refer to Voice Enhancer Technology P 15 16 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 17: ...8 OPERATIONS 8 1 Making Calls 17 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 18: ...18 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 19: ...8 2 Answering Calls 8 3 FLASH Button 19 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 20: ...8 4 Dial Lock 20 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 21: ...numbers in the handset phone book All phone book items are sorted alphabetically You can make a call by selecting a name on the handset display 8 5 1 Storing Names and Numbers 21 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 22: ...22 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 23: ...8 5 2 Dialing from the Phone Book 23 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 24: ...8 5 3 Editing an Item in the Phone Book 8 5 4 Erasing an Item in the Phone Book 24 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 25: ...To Remove Remove 1 Lower Cabinet Screws 2 6 14 A 4 2 Main P C Board Tape and Solder Main P C Board 3 Operational P C Board Screws 2 6 8 B 5 Operational P C Board 25 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 26: ...abinet Screw 2 6 12 C 1 Screws 2 14 D 2 Screws 2 6 12 E 2 6 Rear Cabinet Follow the procedure 7 Main P C Board Screw 2 6 12 F 1 Screws 2 9 G 2 Screws 2 9 H 2 Tape and Solder Main P C Board 26 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 27: ...10 ASSEMBLY INSTRUCTIONS 10 1 Fix the LCD to P C Board Handset 27 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 28: ...tery Charge P 30 Check Link P 30 Check the RF Unit P 31 Check Handset Transmission P 36 Check Handset Reception P 36 Check Caller ID P 36 11 TROUBLESHOOTING GUIDE 28 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 29: ...Cross Reference Power Supply Circuit P 48 Reset Circuit P 49 Note EEPROM is IC202 DSP is IC201 11 1 Check Power 29 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 30: ...heck the RF Unit P 31 Power Supply Circuit P 48 Note EEPROM is IC202 DSP is IC201 Cross Reference Check the RF Unit P 31 Power Supply Circuit P 54 Note EEPROM is IC202 DSP is IC201 30 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 31: ... on See RF Check Flowchart P 33 See Check Table for RF Unit P 34 11 4 2 Converting a Regular Production Unit to a JIG Both base unit and handset unit have two modes TEST POWER LOW mode and NORMAL POWER mode even a Regular production unit Each unit can be used as a JIG by changing the original NORMAL POWER mode to TEST POWER LOW mode NORMAL POWER mode In this mode both base unit and handset unit ca...

Page 32: ...ft Left key 2 3CH LOW Soft Left key 3 4CH LOW Soft Left key 4 5CH LOW Soft Left key 5 6CH LOW Soft Left key 6 7CH LOW Soft Left key 7 8CH LOW Soft Left key 8 9CH LOW Soft Left key 9 10CH LOW Soft Left key the above case 11CH LOW Soft Left key 0 12CH LOW Soft Left key 13CH LOW Down key 1 14CH LOW Down key 2 15CH LOW Down key 3 16CH LOW Down key 4 17CH LOW Down key 5 18CH LOW Down key 6 19CH LOW Dow...

Page 33: ...tion items are following in Check Table for RF Unit P 34 Note DSP is IC201 for Base Unit DSP is IC201 for Handset Both of RF units for Handset and Base Unit are same 33 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 34: ...1 Set Test mode Just entering to test mode 3 2 Confirm oscillate signal of RF UNIT 8 192 MHz at OSC 6 Check point 1 Check Xtal oscillator at Q260 C of the base unit 2 Check DSP interface IC801 DSP BS 4 1 Check Xtal oscillator at Q204 C of the handset 2 Check DSP interface IC801 DSP HS 4 3 TX Power confirmation Procedure 1 Put RF wire to ANT and ANT_GND See Base Unit Reference Drawing Connect this ...

Page 35: ...11 4 5 RF DSP interface signal wave form 35 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 36: ...P 31 11 7 Check Caller ID Cross Reference Telephone Line Interface P 50 Calling Line Identification Caller ID P 52 Note Make sure the format of the Caller ID service of the Telephone company that the customer subscribed to Also we recommend to confirm that the customer is really a subscriber of the service 36 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 37: ... MODE 12 1 Test mode flow chart for Base Unit 1 It shows whether the telephone line is connected or not ON OFF HOOK OFF ON HOOK 37 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 38: ...r Handset 1 See Handset Reference Drawing P 41 Should return to OPEN after entering the Test mode 2 See Adjustment Battery Low Detector Voltage P 39 38 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 39: ...Low voltage to EEPROM is required How to re write 1 Set 2 7V for DC power supply 2 Enter the test mode Refer to Test mode flow chart for Handset P 38 3 Follow to Batt Low Check mode Slave TDD is displayed on LCD 4 Set 2 37V for DC power supply Note Check voltage at battery connector because some voltage drop is happened using long or thin cable 5 Press key to write voltage value in EEPROM 6 Turn p...

Page 40: ...02 C815 C809 ANT2 ANTG2 R153 R157 R154 R155 R156 LC SHS_RF D204 D802 C805 L808 D801 C824 C867 C864 C835 C830 C831 L806 L801 L803 L805 C832 C801 C802 C861 C857 C869 C860 C856 R811 R812 R804 R808 C814 C813 R807 R806 C804 C803 C807 C811 C812 L804 R805 C806 R813 C858 C859 C829 C405 C412 C420 C421 C300 R232 R231 R245 R230 R300 C301 C309 C404 C406 C409 C407 C408 C411 C413 C410 R400 R207 R202 R205 R206 C...

Page 41: ...8 R280 C225 C308 C310 R277 C307 C239 C229 R233 C234 C238 C269 C295 C256 R302 R226 R236 R244 C309 C306 R223 R237 R225 R250 R249 R253 R231 R219 R229 C217 R235 R234 C280 C218 C301 C223 IC206 C317 C224 C241 C231 C233 C205 C293 R239 C291 R238 R281 C294 R273 R213 R274 R275 R209 C203 R210 R270 R212 R246 R248 C274 C242 C214 R200 D211 D216 D207 D208 D205 D206 C302 C303 L212 L211 C277 SCK BT R242 C298 C299 ...

Page 42: ...18325 27 2442 49200 8 2429 69675 28 2443 00550 9 2430 20700 29 2443 51575 10 2430 72050 30 2444 03250 11 2431 23075 31 2444 54275 12 2431 74425 32 2445 05625 13 2432 25450 33 2445 56650 14 2433 79175 34 2446 08000 15 2434 30200 35 2446 59025 16 2434 81550 36 2447 10375 17 2435 32575 37 2447 61400 18 2435 83925 38 2448 12750 19 2436 34950 39 2448 63775 20 2436 86300 42 KX TG2220BXB KX TG2220BXF KX ...

Page 43: ...t time of transmission and reception is 1mS Same frequency is used in transmitting and receiving The figure shows an example the frequency of 3ch is used in transmitting between the base unit and handset Fig 7 13 2 1 TDD Frame Format The TDD frame is 2mS in length Each subframe contains 128 bits of 7 8µS duration Each subframe consists of the following four fields A 1 bit Preamble field An 8 bit D...

Page 44: ...SP IC201 DSP performs ADPCM decoding to convert the signal into the voice signal then it is output to the speaker Transmission The voice signal input from the microphone is led to DSP IC201 The DSP generates ADPCM signal As well as the reception it is converted into the RF signal by RFIC IC801 Passing through filter FL801 it is transmitted from the antenna As for the base unit RF signal from the a...

Page 45: ...Terminate Communication 14 3 Ringing 14 4 Ports for Transmitting and Receiving of Data 14 EXPLANATION OF BBIC Base Band IC DATA COMMUNICATION 45 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 46: ... 82 83 84 85 86 87 3 74 18 19 20 21 22 52 51 79 LED903 LED900 69 36 34 2 OPERATIONAL P C BOARD RF_UNIT DSP INUSE_LED CHARGE_LED CHG_CTL CHG SPN SPP VCCPA VCCA VCC POWER_DOWN RESET CIDIP0 CIDIN0 BELL DCIN0 RLY VRF VCC RESET RECEIVE AMP SIDE_TONE _CIRCUIT TR_RLY INUSE DETECT BELL_ DETECT TEL_JACK DC 1 2 2 4 4 3 3 1 POWER DOWN REGULATOR REGULATOR CHARGE DETECT CHARGE CONTROL CHARGE_CONTACT 1 2 DC RIN...

Page 47: ...tion The DSP implements monitor and demodulate the FSK signals that provide CID information from the Central Office Analog Switching The voice signal from telephone line is transmitted to the speaker or the voice signal from speakerphone microphone is transmitted to the Telephone line etc They are determined by the signal path route operation of voice signal Block Interface Circuit RF unit Speaker...

Page 48: ...IT BOARD BASE UNIT P 80 16 3 1 Charge Circuit The voltage from the AC is supplied to the main charge circuits Normal charge 220 mA of maximum 9 hours is started soon after the Handset is placed on the base unit Then it changes to trickle charge 15 mA on the average to prevent from overcharging Normal charge Q150 is ON Trickle charge Q150 is OFF 48 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BX...

Page 49: ...es an AC adaptor Circuit Operation When the AC Adaptor is inserted into the unit then the voltage is shifted by IC100 D101 and power is supplied to the DSP The set can operate beyond point in the circuit voltage diagram 49 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 50: ...6 C17 Q6 DSP BELL BELL When the CPU DSP detects a ring signal Q4 turns on thus providing an off hook condition active DC current flow through the circuit and the following signal flow is for the DC line current T D4 Q4 Q1 R5 D1 D4 L2 POS1 R OFF HOOK ON HOOK Circuit Q4 is open Q4 is connected as to cut the DC loop current and to cut the voice signal The unit is consequently in an on hook condition ...

Page 51: ...aiting and stutter tone functions when using telephones connected in parallel it is necessary to have a circuit that judges whether a telephone connected in parallel is in use or not This circuit determines whether the telephone connected in parallel is on hook or off hook by detecting changes in the T R voltage It is like an Auto Disconnect Circuit Circuit Operation Parallel connection detection ...

Page 52: ... to the exchange of telephone office This unit is available to receive the data with both methods and displays the received data on LCD FSK Frequency Shift Keying format DTMF format It is the method to send the telephone number of calling party with DTMF to the telephone DTMF is sent before the first bell signal The data is sent in turn first the start code secondly the telephone number of calling...

Page 53: ...IC202 EEPROM KEY PAD KEY LEDS 8 192MHz X201 OSC CN203 LCD_ EEPROM_DO 2 1 BATT BATT1 BATT2 D214 D216 IC201 DSP TXEN SHCTRL TXO VMOD RSTH RSSI PCTRL RXEN RXI RXDATA RX GAIN SIO_DO SIO_LE SIO_CLK OSC BUFFER AMP Q204 64 65 57 62 100 63 58 23 24 25 59 16 22 27 60 36 23 44 34 29 74 54 55 14 51 52 46 47 66 48 POWER DOWN IC205 IC203 3 0V REG IC204 3 0V REG DC DC CONVERTER Q212 L210 P217 C318 53 KX TG2220B...

Page 54: ...Generation Interface circuit RF unit speaker mic LED Key scan LCD Headset 18 1 2 RF unit Mainly voice signal is modulated to RF or it goes the other way 18 1 3 EEPROM IC202 All setting data is stored ex ID code user setting Flash Time Tone Pulse 18 2 Power Supply Circuit Voltage is supplied separately to each block 54 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 55: ...ates a Battery Circuit Operation When the Battery is inserted into the unit Power Down signal and Reset signal are generated by IC205 IC203 Q212 and Q205 as shown below The Reset signal will be generated when Charge ON 55 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 56: ...set SP Phone DSP 29 31 SP RINGER 18 6 Sending Signal The voice signal from the microphone input to DSP 46 47 CN203 is the headphone jack When the headphone is connected the Q206 detect it The input from the microphone of the handset MIN MIP is cut and the microphone signal from the headphone is input to DSP 36 Also the power for the microphone is supplied from Q211 and the power is turned OFF on s...

Page 57: ...SP 44 is inverted and output to DSP 34 LOUTO The signal through the headset jack is inverted then output from DSP 34 to drive the speaker When the headset is inserted to the jack the voice signal is cut at the jack so the sound does not come out from the speaker but from the headset only 57 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 58: ...19 SIGNAL ROUTE Each signal route is as follows 58 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 59: ...20 CPU DATA BASE UNIT 20 1 IC201 59 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 60: ...21 CPU DATA HANDSET 21 1 IC201 60 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 61: ...22 EXPLANATION OF RF UNIT TERMINALS 22 1 IC801 61 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 62: ... PCB by temporarily soldering two diagonally opposite pins in the correct positions on the PCB Be certain each pin is located over the correct pad on the PCB 2 Apply flux to all of the pins on the IC 3 Being careful to not unsolder the tack points slide the soldering iron along the tips of the pins while feeding enough solder to the tip so that it flows under the pins as they are heated 23 3 Remov...

Page 63: ...24 CABINET AND ELECTRICAL PARTS BASE UNIT 63 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 64: ...25 CABINET AND ELECTRICAL PARTS HANDSET 64 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 65: ...26 ACCESSORIES AND PACKING MATERIALS 65 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 66: ...27 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 27 1 Base Unit 27 2 Handset 66 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 67: ...PQKM10608W9 CABINET BODY for KX TG2220BXS PS HB 6 PQSA10110Y ANTENNA 7 PQKE10365Y1 GUIDE CHARGE TERMINAL CASE for KX TG2220BXB ABS HB 7 PQKE10365Y3 GUIDE CHARGE TERMINAL CASE for KX TG2220BXF ABS HB 7 PQKE10365Y2 GUIDE CHARGE TERMINAL CASE for KX TG2220BXS ABS HB 8 PQKE10366Z1 GUIDE CHARGE TERMINAL HOLDER POM HB 9 PQJT10209Y TERMINAL CHARGE 10 PQHR11005Z OPTIC CONDUCTIVE PARTS LED LENS 11 PQSX1024...

Page 68: ... R235 ERJ2GEJ102 1K R236 ERJ2GEJ181 180 Ref No Part No Part Name Description Remarks R237 ERJ2GEJ181 180 R238 ERJ2GEJ181 180 R251 ERJ3GEYJ102 1K R252 ERJ2GEJ102 1K R260 ERJ2GEJ471 470 R261 ERJ2GEJ471 470 R262 ERJ2GEJ104 100K R263 ERJ2GEJ101 100 R264 ERJ2GEJ182 1 8K R400 ERJ2GEJ332 3 3K R433 ERJ2GEJ102 1K R801 ERJ2GEJ100 10 R802 ERJ2GEJ100 10 R803 ERJ2GEJ100 10 R804 ERJ2GEJ4R7 4 7 R805 ERJ2GEJ331 3...

Page 69: ...Z1 GRILLE for KX TG2220BXB ABS HB 101 PQGG10174Z3 GRILLE for KX TG2220BXF ABS HB 101 PQGG10174Z2 GRILLE for KX TG2220BXS ABS HB 102 PQGP10243Z1 PANEL LCD for KX TG2220BXB AS HB 102 PQGP10243Z2 PANEL LCD for KX TG2220BXF for KX TG2220BXS AS HB 103 PQHS10591Z TAPE DOUBLE SIDED 104 PQJT10210Z TERMINAL CHARGE 105 PQKM10609Z1 CABINET BODY for KX TG2220BXB ABS HB 105 PQKM10609Z2 CABINET BODY for KX TG22...

Page 70: ...217 ERJ3GEYF434 430K S R218 ERJ3GEYF824 820K S R222 ERJ2GEJ101 100 R223 ERJ2GEJ102 1K R224 ERJ3GEYJ103 10K R228 ERJ2GEJ224 220K Ref No Part No Part Name Description Remarks R229 ERJ2GEJ102 1K R230 ERJ2GEJ102 1K R231 ERJ2GEJ102 1K R232 ERJ3GEYJ103 10K R233 ERJ2GE0R00 0 R234 ERJ2GEYF225 2 2M R235 ERJ2GEYF225 2 2M R237 ERJ2GEJ104 100K R240 ERJ3GEY0R00 0 R244 ERJ2GEJ473 47K R245 ERJ2GEJ103 10K R246 ER...

Page 71: ...R0CCQ 2 C860 ECUE1H100DCQ 10P S C861 ECUE1H2R0CCQ 2 C862 ECUE1H100DCQ 10P S C863 ECUE1H100DCQ 10P S C865 ECUE1H221JCQ 220P C866 ECUE1C103KBQ 0 01 C867 ECUE1H2R0CCQ 2 C869 ECUE1H2R0CCQ 2 L201 ECUE1H100DCQ 10P S R806 ECUE1H100DCQ 10P S OTHERS E101 L0CBAB000044 MICROPHONE E102 PQMC10471Z MAGNETIC SHIELD FRAME E103 PQMC10472Z MAGNETIC SHIELD COVER FL801 J0E2457B0008 LCR FILTER RA201 EXRV8V104JV RESIST...

Page 72: ...ay be modified at any time with the development of new technology 29 2 Handset SCHEMATIC DIAGRAM HANDSET Note 1 DC voltage measurements are taken with an oscilloscope or a tester with a ground 2 The schematic diagrams and circuit board may be modified at any time with the development of new technology 72 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 73: ...29 3 Memo 73 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 74: ...NC 28 NC IO14 S501 LOCATOR 3 4 560 R205 47 R207 1K R235 NC R241 RST SYN_DATA SYN_EN SYN_CLK TXMOD RXGAIN RXEN TXEN SHCTRL RX_DATA RSTN RSSI Vpow OSC 1 2 C823 10uF 10p C803 330 R805 NC C812 220p C865 2p C867 2p C861 4 7 R804 NC C868 0 1uF C820 FL801 3 1 4 2 1p C804 IC801 1 TX 2 GND_RF 3 RX 4 VCC_RF 5 VCC_BIAS 6 REXT 7 TESTP 8 TESTN 9 VCC_IF 10 XOUT 11 XIN 12 VREG 13 VDD 14 RSSI 15 RSTN 16 RX_DATA 1...

Page 75: ... NC C56 NC C10 NC C243 NC C499 C113 R8 0 1K R10 R220 100 R51 47 Q50 R70 3 9K NC R16 120P C245 C450 6 3V100u C705 6 3V100u C415 C250 K0 047 C453 3P NC L202 Z0 1 C402 3 3u L3 DCP NC C246 C20 VCC1 20V D2 1 2 NC R22 CN101 NC 1 VCC 2 GND 3 STB1 4 STB2 5 STB3 6 STB4 7 STB5 8 KIN6 9 KIN5 10 KIN4 11 KIN3 12 KIN2 13 KIN1 14 ANSLED 15 VMLED 16 SPLED 17 INUSELED 18 GND 10M R25 R27 C21 K0 01 NC D105 D205 NC D...

Page 76: ... COM1 15 STB1 16 STB2 17 STB3 18 STB4 19 STB5 20 KIN6 21 KIN5 22 KIN4 23 KIN3 24 KIN2 25 KIN1 26 ANS_LED 27 VM_LED 28 SP_LED 29 INUSE_LED 30 VCC R900 C900 R901 R902 R903 C901 STOP STOP ANS1 ANS1 MIC MICM MICP NC C902 ANS2 ANS2 LED903 INUSE_LED R904 0 R905 R906 ICOM ICOM KX TG2220BXB F S SCHEMATIC DIAGRAM BASE UNIT Operation NC R911 0 NC NC R907 390 NC NC NC NC NC NC R910 NC to Main PCB Base Unit K...

Page 77: ...30 3 Memo 77 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS ...

Page 78: ...0P C829 TESTN 10K 1 R810 1608 NC C806 0 1 C820 1 0 C830 C833 6 3V10 K1000P C824 K390P C819 D10P C860 D10P R806 K1000P C821 FL801 3 1 4 2 2 2nH L805 K1000P C827 D10P C811 D802 D10P C813 10 R802 330 R805 NC C826 C1P C822 10nH L801 NC C832 0 1 C818 1 0 C831 D10P C815 0 1 C817 10nH L806 D10P C807 K1000P C801 TP_FREQ 10nH L804 K680P C825 1uH L807 1608 C1P C802 IC801 1 TX 2 GND_RF 3 RX 4 VCC_RF 5 VCC_BI...

Page 79: ...IOEN 72 GND 73 VCC 74 CHARGE_DET 75 TCK 76 TMS 77 TDI 78 TDO 79 CHG_LED 80 NC 81 NC 82 KEYIN_5 83 KEYIN_4 84 KEYIN_3 85 KEYIN_2 86 KEYIN_1 87 NC 88 EEP_CS 89 NC 90 NC 91 NC 92 KEY_BACKLIGHT 93 LCD_BACKLIGHT 94 LCD_POWER_SW 95 EEP_WP 96 GND 97 VCC 98 NC 99 EEP_CLK 100 NC 2 2M 1 R235 6 3V22 C257 C308 C3P Q204 R278 100K R279 100 R276 470 R277 470 C306 0 1 C307 K0 1 IC204 3 0V 1 CONT 2 GND 3 NOISE 4 V...

Page 80: ...0 IC201 IC202 IC300 S501 RF CN101 CN100 30 31 50 51 80 81 100 1 IC101 32 25 17 24 16 9 8 1 C416 L802 C815 C809 ANT2 ANTG2 R153 R157 R154 R155 R156 LC SHS_RF D204 D802 C805 L808 D801 C824 C867 C864 C835 C830 C831 L806 L801 L803 L805 C832 C801 C802 C861 C857 C869 C860 C856 R811 R812 R804 R808 C814 C813 R807 R806 C804 C803 C807 C811 C812 L804 R805 C806 R813 C858 C859 C829 C405 C412 C420 C421 C300 R23...

Page 81: ...2 1 1 PDN IC331 TAM CDL D107 C110 R19 R12 R108 C20 DCM D5 C217 C218 R114 R10 R8 R5 C7 R7 R25 C21 R29 R27 CHGM CHGP D152 D153 C19 C18 D109 D108 R21 R20 C10 R18 R113 R112 R110 R109 C111 R6 Q50 R70 C236 R219 C241 C233 C232 C56 C54 R52 C55 D102 D202 D203 R101 C250 C51 C52 R200 VCC UTX1 URX1 LED201 LED203 ANTG1 ANT1 KX TG2220BXB F S CIRCUIT BOARD BASE UNIT Main Flow Solder Side View KX TG2220BXB KX TG2...

Page 82: ...mponent View LED900 LED903 LED902 LCD900 CN901 30 1 1 3 4 5 6 7 8 9 10 29 26 27 11 18 17 16 15 22 21 20 19 23 24 25 30 12 13 14 MIC PbF MICP MICM R904 R910 R911 R901 R903 C900 C901 R902 R900 R906 R907 R905 C902 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS 82 ...

Page 83: ...X TG2220BXB F S CIRCUIT BOARD BASE UNIT Operation Flow Solder Side View LCD900 1 12 MSG1 REG CHK ANS1 ANS2 ERS STOP REP SKIP DOWN UP ICON PbF MIC MSG2 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS 83 ...

Page 84: ... RA201 C267 D207 TPM TPP C220 Q212 Q201 Q202 SI SO WP TEST C213 R243 D214 R265 R245 C259 R247 R230 C232 C230 C236 C237 R222C222 C226 C227 R228 R279 R276 R278 R280 C225 C308 C310 R277 C307 C239 C229 R233 C234 C238 C269 C295 C256 R302 R226 R236 R244 C309 C306 R223 R237 R225 R250 R249 R253 R231 R219 R229 C217 R235 R234 C280 C218 C301 C223 IC206 C317 C224 C241 C231 C233 C205 C293 R239 C291 R238 R281 C...

Page 85: ...EY SP_PHONE KEY1 DOWN LED205 LED206 LED201 LED202 LED204 LED203 LED207 R216 C210 R217 C215 C212 R218 C208 C207 C206 C209 C211 R240 R232 R224 C296 C287 R205 R206 R202 R201 R204 R203 R207 KX TGA226BXB F S CIRCUIT BOARD HANDSET Main Flow Solder Side View RSSI KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS 85 ...

Page 86: ...86 KX TG2220BXB KX TG2220BXF KX TG2220BXS KX TGA226BXB KX TGA226BXF KX TGA226BXS H M KXTG2220BXB KXTG2220BXF KXTG2220BXS KXTGA226BXB KXTGA226BXF KXTGA226BXS ...

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