Panasonic KX-TG2344B Service Manual
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Panasonic KX-TG2344B Service Manual

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Telephone Equipment
KX-TG2344B
KX-TGA234B
2.4GHz Multi-Handset Digital Cordless
Phone
Black Version
(for U.S.A.)
© 2004 Panasonic Communications Co., Ltd. All
rights
reserved.
distribution is a violation of law.
ORDER NO. KM40401327C1
F12
Unauthorized
copying
and

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Summary of Contents for Panasonic KX-TG2344B

  • Page 1 ORDER NO. KM40401327C1 Telephone Equipment KX-TG2344B KX-TGA234B 2.4GHz Multi-Handset Digital Cordless Phone Black Version (for U.S.A.) © 2004 Panasonic Communications Co., Ltd. All rights reserved. Unauthorized copying distribution is a violation of law.

  • Page 2: Table Of Contents

    KX-TG2344B / KX-TGA234B NOte: Because CONTENTS 2 to 7 are the extracts from the Operating Instructions of this model, they are subject to change without notice. Please refer to the original Operating Instructions for further information. CONTENTS Page Page 1 ABOUT LEAD FREE SOLDER (PbF: Pb free) 5.6.
  • Page 3 KX-TG2344B / KX-TGA234B 10 TROUBLESHOOTING GUIDE 17.6. Reception Signal 10.1. Check Power 18 CIRCUIT OPERATION (CHARGER UNIT) 10.2. Error Message Table 19 SIGNAL ROUTE 10.3. Check Record 20 CPU DATA (Base Unit) 10.4. Check Playback 20.1. IC501 10.5. Check Battery Charge 21 CPU DATA (Handset) 10.6.

  • Page 4: About Lead Free Solder (Pbf: Pb Free)

    KX-TG2344B / KX-TGA234B 1 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 free solder used in our manufacturing process which is made from Tin (Sn), Silver (Ag), and Copper (Cu).

  • Page 5: How To Recognize That Pb Free Solder Is Used

    KX-TG2344B / KX-TGA234B 1.2. How to recognize that Pb Free solder is used 1.2.1. Base Unit PCB 1.2.1.1. Main IC901 IC601 IC701 IC501 IC521 Marked (Component View) Marked IC201 IC300 IC301 (Flow Solder Side View) Note: The location of the “PbF“ mark is subject to change without notice.
  • Page 6 KX-TG2344B / KX-TGA234B 1.2.1.2. Operation Marked (Flow Solder Side View) Note: The location of the “PbF“ mark is subject to change without notice. 1.2.2. Cordless Handset PCB IC204 IC901 IC201 IC202 IC203 Marked (Component View) Note: The location of the “PbF“ mark is subject to change without notice.
  • Page 7 KX-TG2344B / KX-TGA234B 1.2.3. Charger Unit Marked (Component View) Note: The location of the “PbF” mark is subject to change without notice.

  • Page 8: Battery

    KX-TG2344B / KX-TGA234B 2 BATTERY 2.1. Standard Battery Life 2.1.1. Battery Charge 2.1.2. Battery Strength 2.1.3. Recharge Note for service: The battery strength may not be indicated correctly if the battery is disconnected and connected again, even after it is fully...

  • Page 9: Battery Replacement

    KX-TG2344B / KX-TGA234B 2.1.4. Battery Information 2.2. Battery Replacement...

  • Page 10: Location Of Controls

    KX-TG2344B / KX-TGA234B 3 LOCATION OF CONTROLS 3.1. Base unit...

  • Page 11: Handset

    KX-TG2344B / KX-TGA234B 3.2. Handset...

  • Page 12: Charger Unit

    KX-TG2344B / KX-TGA234B 3.3. Charger Unit...

  • Page 13: Displays

    KX-TG2344B / KX-TGA234B 4 DISPLAYS 4.1. Base Unit Display...

  • Page 14: Troubleshooting (Handset Lcd)

    KX-TG2344B / KX-TGA234B 4.2. Troubleshooting (Handset LCD) The following will be displayed when the unit needs your attention.
  • Page 15 KX-TG2344B / KX-TGA234B...

  • Page 16: Settings

    KX-TG2344B / KX-TGA234B 5 SETTINGS 5.1. Connections 5.1.1. Base Unit 5.1.2. Charger Unit...

  • Page 17: Connecting An Optional Headset

    KX-TG2344B / KX-TGA234B 5.2. Connecting an Optional Headset...

  • Page 18: Function Menu Table

    KX-TG2344B / KX-TGA234B 5.3. Function Menu Table...

  • Page 19: Date And Time

    KX-TG2344B / KX-TGA234B 5.4. Date and Time...

  • Page 20: Display Language

    KX-TG2344B / KX-TGA234B 5.5. Display Language 5.6. Dialing Mode...

  • Page 21: Line Mode

    KX-TG2344B / KX-TGA234B 5.7. Line Mode 5.8. Voice Enhancer Technology...

  • Page 22: Ringer Tone

    KX-TG2344B / KX-TGA234B 5.9. Ringer Tone...

  • Page 23: Direct Commands

    KX-TG2344B / KX-TGA234B 5.10. Direct Commands...
  • Page 24 KX-TG2344B / KX-TGA234B...

  • Page 25: Operation

    KX-TG2344B / KX-TGA234B 6 OPERATION 6.1. Answering System 6.1.1. Greeting Message...
  • Page 26 KX-TG2344B / KX-TGA234B 6.1.2. Caller’s Recording Time...
  • Page 27 KX-TG2344B / KX-TGA234B 6.1.3. Message Alert...
  • Page 28 KX-TG2344B / KX-TGA234B 6.1.4. Erasing Messages...

  • Page 29: For Call Waiting Service Users

    KX-TG2344B / KX-TGA234B 6.2. For Call Waiting Service Users 6.3. Using the PAUSE Key...

  • Page 30: Flash Button

    KX-TG2344B / KX-TGA234B 6.4. FLASH Button...

  • Page 31: Remote Operation From A Touch Tone Phone

    KX-TG2344B / KX-TGA234B 6.5. Remote Operation from a Touch Tone Phone 6.5.1. Remote Code...
  • Page 32 KX-TG2344B / KX-TGA234B 6.5.2. Voice Menu...
  • Page 33 KX-TG2344B / KX-TGA234B 6.5.3. Direct Remote Operation...

  • Page 34: Phone Book

    KX-TG2344B / KX-TGA234B 6.6. Phone Book 6.6.1. Storing Names And Numbers...
  • Page 35 KX-TG2344B / KX-TGA234B...
  • Page 36 KX-TG2344B / KX-TGA234B 6.6.2. Dialing from the Phone Book...
  • Page 37 KX-TG2344B / KX-TGA234B 6.6.3. Chain Dial...
  • Page 38 KX-TG2344B / KX-TGA234B 6.6.4. Editing an Item in the Phone Book 6.6.5. Erasing an Item in the Phone Book...

  • Page 39: Troubleshooting

    KX-TG2344B / KX-TGA234B 7 TROUBLESHOOTING Cross Reference: (*1)Re-registering a Handset (P.52) (*2)Battery Charge (P.8) Note for Service: In case you cannot talk on one of two Handsets, replace their extension numbers as in the steps below: 1. Change the extension number of the Handset on which you CAN talk into the number of the other Handset on which you CANNOT talk.
  • Page 40 KX-TG2344B / KX-TGA234B Cross Reference: (*3)Message Alert (P.27) (*4)Connecting an Optional Headset (P.17)
  • Page 41 KX-TG2344B / KX-TGA234B Cross Reference: (*5)Caller’s Recording Time (P.26) (*6)Erasing Messages (P.28) (*7)Remote Code (P.31) (*8)Date and Time (P.19)
  • Page 42 KX-TG2344B / KX-TGA234B Cross Reference: (*9)BATTERY (P.8) (*10)Connections (P.16) (*11)Dialing Mode (P.20) (*12)Battery Charge (P.8) (*13)Recharge (P.8) (*14)Battery Replacement (P.9)

  • Page 43: Disassembly Instructions

    KX-TG2344B / KX-TGA234B 8 DISASSEMBLY INSTRUCTIONS 8.1. Base Unit Shown in Fig.- To Remove Remove Lower Cabinet Screws (2.6 × 12)..(A) × 4 Main P.C. Board Tape and Solder Screws (2.6 × 8)...(B) × 3 Operational P.C. Board Screws (2.6 × 8)..(C) × 6...

  • Page 44: Handset

    KX-TG2344B / KX-TGA234B 8.2. Handset Shown in Fig.- To Remove Remove Rear Cabinet Screws (2.6 × 12)..(D) × 2 Rear Cabinet Follow the procedure. Main P.C. Board Tape and Solder Screw (2.6 × 12)..(E) × 1 Screws (2.6 × 9)..(F) × 2...

  • Page 45: Charger Unit

    KX-TG2344B / KX-TGA234B 8.3. Charger Unit Shown in Fig.- To Remove Remove Lower Cabinet Screw (2.6 × 12)..(G) × 1 Main P.C. Board Main P.C. Board...

  • Page 46: Assembly Instructions

    KX-TG2344B / KX-TGA234B 9 ASSEMBLY INSTRUCTIONS 9.1. Fix the LCD to P.C. Board (Handset)

  • Page 47: Troubleshooting Guide

    KX-TG2344B / KX-TGA234B 10 TROUBLESHOOTING GUIDE Cross Reference: Note: Check Power (P.48) (*1) When a user claims that the unit disconnects a call right after the greeting message and no incoming messages can Error Message Table (P.48) be recorded, this symptom can not be reappeared with TEL Check Playback (P.50)

  • Page 48: Check Power

    KX-TG2344B / KX-TGA234B 10.1. Check Power Cross Reference: NOTE: Power Supply Circuit (P.76) DSP is IC501. Reset Circuit (P.78) 10.2. Error Message Table Display Symptom Remedy The initialization was tried, but it could not be done. 1. Check the peripheral circuit of Flash Memory visually.

  • Page 49: Check Record

    KX-TG2344B / KX-TGA234B 10.3. Check Record c) How to change the Auto Disconnect activation (time) Some Telephone Company lines (fiber or cable) ON Hook and OFF Hook voltages are lower than conventional lines, which may cause a malfunction of Auto Disconnect detection.To solve this problem, try changing the Auto Disconnect activation (time) through the procedures below.

  • Page 50: Check Playback

    KX-TG2344B / KX-TGA234B 10.4. Check Playback Cross Reference: NOTE: Power Supply Circuit (P.76) Flash Memory is IC701. DSP is IC501. 10.5. Check Battery Charge NOTE: DSP is IC501.

  • Page 51: Check Link

    KX-TG2344B / KX-TGA234B 10.6. Check Link (*1) Refer to Finding Out the Defective Part (P.52). Cross Reference: RF Check Flowchart (P.53)

  • Page 52: Check The Rf Part

    KX-TG2344B / KX-TGA234B 10.7. Check the RF Part 10.7.1. Finding Out the Defective Part After All the Checkings or Repairing Re-register Handset (to be checked) to Base Unit (to be checked) and HS to BU Regular unit (working). 10.7.1.1. Re-registering a Handset...
  • Page 53 KX-TG2344B / KX-TGA234B 10.7.2. RF Check Flowchart Each item (1a ~5) of RF Check Flowchart corresponds to Check Table for RF part. Please refer to the each item. Cross Reference: Check Table for RF part (P.54)
  • Page 54 KX-TG2344B / KX-TGA234B 10.7.3. Check Table for RF part Item BU checking HS checking 1a Link confirmation Normal 1. Re-resister HS Regular Unit (working) to BU. 1. Re-resister HS to BU of Regular Unit (working). 2. Press [Talk] key of the HS Regular Unit to 2.
  • Page 55 KX-TG2344B / KX-TGA234B 10.7.4. RF-DSP interface signal wave form...

  • Page 56: Check Handset Transmission

    KX-TG2344B / KX-TGA234B 10.8. Check Handset Transmission Cross Reference: SIGNAL ROUTE (P.90). 10.9. Check Handset Reception Cross Reference: SIGNAL ROUTE (P.90). NOTE: When checking the RF UNIT, Refer to Check the RF Part (P.52) 10.10. Check Caller ID Cross Reference: Telephone Line Interface (P.79).

  • Page 57: Test Mode

    KX-TG2344B / KX-TGA234B 11 TEST MODE 11.1. Test Mode Flow Chart for Base Unit 11.1.1. TX Burst Mode and Adjust X’tal Mode...
  • Page 58 KX-TG2344B / KX-TGA234B 11.1.2. RX-CW TEST Mode...
  • Page 59 KX-TG2344B / KX-TGA234B 11.1.3. Test Link Mode...

  • Page 60: Test Mode Flow Chart For Handset

    KX-TG2344B / KX-TGA234B 11.2. Test Mode Flow Chart for Handset 11.2.1. TX Burst Mode...
  • Page 61 KX-TG2344B / KX-TGA234B 11.2.2. RX-CW TEST Mode...
  • Page 62 KX-TG2344B / KX-TGA234B 11.2.3. Test Link Mode Note: (*1) LCD displays the Channel number. (exception: default/ CH00 = 1ch.)
  • Page 63 KX-TG2344B / KX-TGA234B 11.2.4. Adjustment flow (X’tal mode and Batt Low Mode) Cross Reference (*1) Adjustment Battery Low Detector Voltage (Handset) (P.64) NOTE: (*2) These are the default values. (*3) These values may not be fixed depending on the battery strength.

  • Page 64: X801 (Base Unit), X201 (Handset) Check

    KX-TG2344B / KX-TGA234B 11.3. X801 (Base Unit), X201 (Handset) Check Equipment: Frequency counter Check Point for measurement: BCK Checking tolerance: 13.824MHz ± 100Hz 11.3.1. Check and Adjustment X801 (Base Unit) Frequency 1. Set up Base Unit in TEST mode. 2. Press following keys in order to Adjust Crystal mode. [LOCATOR], [LOCATOR], [LOCATOR], [ ] or [ ], [ ], [ ] * Check BCK frequency.

  • Page 65: Base Unit Reference Drawing

    KX-TG2344B / KX-TGA234B SG out...
  • Page 66 KX-TG2344B / KX-TGA234B...

  • Page 67: Frequency Table

    KX-TG2344B / KX-TGA234B 11.7. FREQUENCY TABLE Channel TX/RX Frequency TEST MODE Frequency Channel TX/RX Frequency TEST MODE Frequency (MHz) (MHz) (MHz) (MHz) 2400.914355 2400.724512 2457.994043 2457.804199 2401.808203 2401.618359 2458.887891 2458.698047 2402.698096 2402.508252 2459.777783 2459.587939 2403.591943 2403.402100 2460.671631 2460.481787 2404.481836 2404.291992 2461.561523...

  • Page 68: How To Clear User Setting

    KX-TG2344B / KX-TGA234B 11.8. How to Clear User Setting The operation reset the unit to Factory setting. (Erase recording Voice messages, Stored phone numbers, Caller list and etc.) This operation should not be performed for a usual repair. 11.8.1. Base unit...

  • Page 69: Description

    KX-TG2344B / KX-TGA234B 12 DESCRIPTION 12.1. Frequency The frequency range of 2400MHz~2480MHz is used. Transmitting and receiving channel between base unit and handset is same frequency. Refer to the Frequency Table. 12.2. FHSS (Frequency Hopping Spread Spectrum) This telephone is using an IC chip which has similar specification to WDCT (World Digital Cordless Telephone) and is the cordless telephone system that can use multiple portable unit simultaneously.
  • Page 70 KX-TG2344B / KX-TGA234B 12.2.1. TDD Frame Format 12.2.2. TDMA system This system is the cycles of 10ms, and has four duplex paths, so it is possible to perform four duplex communications simultaneously. In 1 slot 1.25ms, the 10ms of voice data is transmitted.

  • Page 71: Signal Flowchart In The Whole System

    KX-TG2344B / KX-TGA234B 12.3. Signal Flowchart in the Whole System Reception CN101 of the base unit is connected to the TEL line, and signal is entered through the bridge diode D101. While talking, the relay (Q104) is turned ON and amplified at the Q150, then led to DSP (IC501). The DSP encodes ADPCM and TDD/TDMA with FHSS to TX-DATA.

  • Page 72: Explanation Of Link Data Communication

    KX-TG2344B / KX-TGA234B 13 EXPLANATION OF LINK DATA COMMUNICATION 13.1. Calling 13.2. To Terminate Communication 13.3. Ringing...

  • Page 73: Block Diagram (Base Unit)

    KX-TG2344B / KX-TGA234B...

  • Page 74: Circuit Operation (Base Unit)

    KX-TG2344B / KX-TGA234B 15 CIRCUIT OPERATION (Base Unit) General Description: (DSP, Flash Memory) is a digital speech/signal processing system that implements all the functions of speech compression, record and playback, and memory management required in a digital telephone answering machine.

  • Page 75: Flash Memory (Ic701)

    KX-TG2344B / KX-TGA234B 15.1.2. The Meaning of the Motion of Pin 100 • • • • The period of Host Power Up (Hardware Initialization) In this period, the host sets up some registers in order to wake up the system.

  • Page 76: Power Supply Circuit

    KX-TG2344B / KX-TGA234B 15.3. Power Supply Circuit Function: The power supply voltage from AC adaptor is converted to the desired voltage of each block. Circuit Operation: • • • • IC301, Q301 and D303: 4.0V DCDC Converter • • • • IC300: 3.3V Regulator...
  • Page 77 KX-TG2344B / KX-TGA234B 15.3.1. Charge Circuit The voltage from the AC is supplied to the charge circuits. Normal charge of maximum 6-hours is started soon after the Handset is placed on the base unit. Then it changes to Trickle charge to prevent from overcharging.

  • Page 78: Reset Circuit

    KX-TG2344B / KX-TGA234B 15.4. Reset Circuit Function: This circuit is used to initialize the microcomputer when it incorporates an AC adaptor. Circuit Operation: When the AC Adaptor is inserted into the unit, then the voltage is shifted by IC300 and power is supplied to the DSP.

  • Page 79: Locator/Intercom Mode

    KX-TG2344B / KX-TGA234B 15.5. Locator/Intercom Mode 1. Press the base LOCATOR/INTERCOM button, then a beep is output from pins 29 and 31 of IC501, and blinks on the display [IN USE] (LED) is caused by IC501. 2. At the same time, a beep is output from pin 29, pin 31 of IC501. The status is called "Intercom stand-by"...

  • Page 80: Auto Disconnect Circuit

    KX-TG2344B / KX-TGA234B 15.7. Auto Disconnect Circuit Function: This circuit is used to detect the fact that another telephone connected to the same line is OFF-HOOK while the unit is in a receiving status or OGM transmitting status. Circuit Operation: When off hook Q107 is OFF, the voltage of pin50 of IC501 is monitored.

  • Page 81: Parallel Connection Detect Circuit

    KX-TG2344B / KX-TGA234B 15.8. Parallel Connection Detect Circuit Function: In order to disable call waiting 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.

  • Page 82: Calling Line Identification (Caller Id)/Call Waiting Caller Id

    KX-TG2344B / KX-TGA234B 15.9. Calling Line Identification (Caller ID)/Call Waiting Caller ID Function: Caller ID The caller ID is a chargeable ID which the user of a telephone circuit obtains by entering a contract with the telephone company to utilize a caller ID service. For this reason, the operation of this circuit assumes that a caller ID service contract has been entered for the circuit being used.The data for the caller ID from the telephone exchange is sent during the interval between the first and...
  • Page 83 KX-TG2344B / KX-TGA234B Call Waiting Caller ID Calling Identity Delivery on Call Waiting (CIDCW) is a CLASS service that allows a customer, while off-hook on an existing call, to receive information about a calling party on a waited call. The transmission of the calling information takes place almost immediately after the customer is alerted to the new call so he/she can use this information to decide whether to take the new call.

  • Page 84: Block Diagram (Handset)

    KX-TG2344B / KX-TGA234B 16 BLOCK DIAGRAM (Handset) IC202 D213 MOD_EN RXGAIN RSTN D207 D208 IC205 D205 D206 IC203 VBATT2 3.0V IC201 HSMIP HSMIN IC204 2.5V KX-TGA234B BLOCK DIAGRAM (Handset)

  • Page 85: Circuit Operation (Handset)

    KX-TG2344B / KX-TGA234B 17 CIRCUIT OPERATION (Handset) 17.1. Construction The circuit mainly consists of DSP and RF unit as shown in the block diagram. 17.1.1. DSP:IC201 17.1.1.1. Function • • • • Battery Low, Power down defect circuit • • • • Ringer Generation •...

  • Page 86: Power Supply Circuit

    KX-TG2344B / KX-TGA234B 17.2. Power Supply Circuit Voltage is supplied separately to each block.

  • Page 87: Charge Circuit

    KX-TG2344B / KX-TGA234B 17.3. Charge Circuit When the handset is put on the cradle of the Base unit or the optional charger, the power is supplied from CHARGE2 and CHARGE1 terminals to charge the battery via D205 (D207), R268, Q212. The voltage between CHARGE2 and CHARGE1 flows D213 ->...

  • Page 88: Sending Signal

    KX-TG2344B / KX-TGA234B 17.5. Sending Signal The voice signal from the microphone input to DSP (42-43). CN203 is the headset 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 headset is input to DSP (39).

  • Page 89: Circuit Operation (Charger Unit)

    KX-TG2344B / KX-TGA234B 18 CIRCUIT OPERATION (CHARGER UNIT) The voltage from the AC is supplied to the charge circuits. Main and Operational charge (165mA at the Battery) of maximum 6- hours is started soon after the Handset is placed on the charger unit. Then it changes to Trickle charge (average 10mA at the Battery) to prevent from overcharging.

  • Page 90: Signal Route

    KX-TG2344B / KX-TGA234B 19 SIGNAL ROUTE Each signal route is as follows.

  • Page 91: Cpu Data (Base Unit)

    KX-TG2344B / KX-TGA234B 20 CPU DATA (Base Unit) 20.1. IC501 Description High High_Z Description High High_Z INT0 56 FLASH_RST High Middle NOT_RLY On Hook Off Hook 57 TX_OUT High BELL 58 MOD_EN Active Off Hook On Hook 59 FLASH_SO High...

  • Page 92: Cpu Data (Handset)

    KX-TG2344B / KX-TGA234B 21 CPU DATA (Handset) 21.1. IC201 Description High High_Z Description High High_Z Normal 51 XOUT Normal 52 XIN DOT_LCD_RS Data Instruct 53 GND DOT_LCD_RW_ Read Write 54 RESET Normal Reset 55 PDN Power On Power Down DOT_LCD_E_R Active 56 (FLASH_RESET) D.O...

  • Page 93: Explanation Of Ic Terminals (Rf Unit)

    KX-TG2344B / KX-TGA234B 22 EXPLANATION OF IC TERMINALS (RF Unit) 22.1. IC901...

  • Page 94: How To Replace Aflat Package Ic

    KX-TG2344B / KX-TGA234B 23.3. Removing Solder from 23 HOW TO REPLACE A Between Pins FLAT PACKAGE IC 1. Add a small amount of solder to the bridged pins. 23.1. Preparation 2. With a hot iron, use a sweeping motion along the flat part of the pin to draw the solder from between the adjacent pads.

  • Page 95: Cabinet And Electrical Parts (Base Unit)

    KX-TG2344B / KX-TGA234B 24 CABINET AND ELECTRICAL PARTS (Base Unit)

  • Page 96: Cabinet And Electrical Parts (Handset)

    KX-TG2344B / KX-TGA234B 25 CABINET AND ELECTRICAL PARTS (Handset)

  • Page 97: Cabinet And Electrical Parts (Charger Unit)

    KX-TG2344B / KX-TGA234B 26 CABINET AND ELECTRICAL PARTS (Charger Unit)

  • Page 98: Accessories And Packing Materials

    KX-TG2344B / KX-TGA234B 27 ACCESSORIES AND PACKING MATERIALS...

  • Page 99: Terminal Guide Of The Ic´s, Transistors And Diodes

    KX-TG2344B / KX-TGA234B 28 TERMINAL GUIDE OF THE IC´S, TRANSISTORS AND DIODES 28.1. Base Unit 28.2. Handset...

  • Page 100: Charger Unit

    KX-TG2344B / KX-TGA234B 28.3. Charger Unit...

  • Page 101: Replacement Parts List

    KX-TG2344B / KX-TGA234B 29 REPLACEMENT PARTS Ref. Part No. Part Name & Description Remarks PQSA10098V ANTENNA LIST PQSX10254Y KEYBOARD SWITCH, TAM PQMG10023Z RUBBER PARTS, MIC COVER Note: PQJE10135Z FLAT CABLE PQKF10609Z2 CABINET COVER 1. RTL (Retention Time Limited) PQKL10060Z2 STAND, WALL MOUNT...
  • Page 102 KX-TG2344B / KX-TGA234B Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks (LCR FILTERS) R723 ERJ3GEYJ821 FL901 J0E2457B0008 IC FILTER R724 ERJ3GEYJ821 (COMPONENTS PARTS) R803 ERJ2GEJ182 1.8K RA10 EXRV8V104JV RESISTOR ARRAY R804 ERJ2GEJ151...

  • Page 103: Handset

    KX-TG2344B / KX-TGA234B Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C628 ECUE1H101JCQ 100P PQHR11022Z GUIDE, LCD C629 ECUE1H101JCQ 100P C630 ECUE1H101JCQ 100P 29.2. Handset C701 ECUE1A104KBQ C800 ECUE1A104KBQ 29.2.1. Cabinet and Electrical Parts...
  • Page 104 KX-TG2344B / KX-TGA234B Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks D219 MA8047 DIODE(SI) R270 ERJ3GEYJ102 D220 MA8047 DIODE(SI) R275 ERJ2GEJ104 100K D903 B0DCCD000011 DIODE(SI) R276 ERJ2GEJ561 D904 B0DCCD000011 DIODE(SI) R277 ERJ2GEJ104...

  • Page 105: Charger Unit

    KX-TG2344B / KX-TGA234B Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C901 ECUE1H100DCQ PQVDS5688G DIODE(SI) C903 ECUE1H100DCQ LED1 LNJ201LPQJA C904 ECUE1H010CCQ (COILS) C910 ECUE1H010CCQ PQLQXF4R7K COIL C911 ECUE1H100DCQ PQLQXF4R7K COIL C915 ECUE1H100DCQ...

  • Page 106: Accessories And Pack,Ing Materials

    KX-TG2344B / KX-TGA234B 29.4. Accessories and Pack,ing Materials Ref. Part No. Part Name & Description Remarks PQLV1Z AC ADAPTOR (for Base Unit) KX-TCA1-G AC ADAPTOR (for Charger Unit) PQJA10075Z CORD, TELEPHONE PQKE10375Z2 HANGER, BELT CLIP PQQX13990Y INSTRUCTION BOOK PQQW13193Y QUICK GUIDE (English)

  • Page 107: For Schematic Diagram

    KX-TG2344B / KX-TGA234B 30 FOR SCHEMATIC DIAGRAM 30.1. Base Unit (SCHEMATIC DIAGRAM (Base Unit)) Notes: 1. DC voltage measurements are taken with voltmeter from the negative voltage line. 2. This schematic diagram may be modified at any time with the development of new technology.

  • Page 108: Schematic Diagram (Base Unit)

    KX-TG2344B / KX-TGA234B 31 SCHEMATIC DIAGRAM (Base Unit) D351 2AP_VCC IC601 VBATT_2 2.5V 2.5VREG RF VBATT2 ANTG1 ANT1 Vout DMOD1 ANTG2 ANT2 C518 C621 Cont C623 K470P C624 C625 100P C626 100P C627 100P C628 W_VDD C629 C630 C631 C632...
  • Page 109 C120 R114 C111 390K K680P INTERCOM RX C121 R115 C112 -10dBm OUT (15) L401 390K K680P 6.8µ Q106 C116 R130 (16) L402 K0.15 100K (17) 6.8µ (18) C117 R131 K0.15 100K (19) (20) (21) (22) KX-TG2344B SCHEMATIC DIAGRAM (BASE UNIT)
  • Page 110 KX-TG2344B / KX-TGA234B 32 SCHEMATIC DIAGRAM (Handset) -16.5dBm OUT CN203 L206 C225 6V22 R232 HEADSET-DET Q206 MIC2 MIC1 L204 TP_ANT L205 -45dBm IN HEADSET-JACK HANDSET SP R226 RSSI TX_DATA R227 (10) OSC_IN R321 (11) RA201 MOD_EN C324 C321 IC206 4.7K...
  • Page 111 KX-TG2344B / KX-TGA234B RSSI C312 K0.1 L202 NC R276 560 R286 Q204 L203 NC 3.0V X201 13.824MHz R295 NC (10) (11) R242 R241 (12) (13) R222 (14) (15) (16) CHARGE_DET C216 C303 (17) MICM 81 RF_RESET VCCPLL C214 K0.1 -45dBm...
  • Page 112 KX-TG2344B / KX-TGA234B...
  • Page 113 KX-TG2344B / KX-TGA234B...

  • Page 114: Schematic Diagram (Charger Unit)

    KX-TG2344B / KX-TGA234B 34 SCHEMATIC DIAGRAM (Charger Unit) CHARGE PQJT01 4.7µ Vout DC JACK 1u50V 1u50V 1.0k 4.7µ PQJT02 2.2K LED1 KX-TG2357B/S SCHEMATIC DIAGRAM (Charger Unit)
  • Page 115 KX-TG2344B / KX-TGA234B CN101 D904 C911 L913 FL901 C913 D903 L101 L904 C904 C910 R903 L901 L102 R992 R991 Q104 Q161 C167 Q350 KIN2 KIN1 KIN3 INT0 DVCC JC R JS Y RA502 RA503 RA504 JI B URX2 UTX2 JO G...
  • Page 116 KX-TG2344B / KX-TGA234B...
  • Page 117 KX-TG2344B / KX-TGA234B L5CD01 23 22 13 11 GCHK GREC LED11 STOP ERASE SKIP 6 3 2 7 LED12 DOWN MICP MICM...
  • Page 118 KX-TG2344B / KX-TGA234B...
  • Page 119 KX-TG2344B / KX-TGA234B...
  • Page 120 KX-TG2344B / KX-TGA234B...

  • Page 121: Component View

    KX-TG2344B / KX-TGA234B 37 CIRCUIT BOARD (Charger Unit) 37.1. Component View PQJT01 PQHG01 PQHG02 PQJT02 KX-TG2344B CIRCUIT BOARD (Component View (Charger Uint))

  • Page 122: Flow Solder Side View

    KX-TG2344B / KX-TGA234B 37.2. Flow Solder Side View KX-TG2344B CIRCUIT BOARD (Flow Solder Side View (Charger Unit)) I.N. KXTG2344B-AK KXTGA234B-AK...

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