Panasonic KX-TH1211B Service Manual
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Panasonic KX-TH1211B Service Manual

Panasonic KX-TH1211B Service Manual

Telephone equipment
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Telephone Equipment
KX-TH1211B
Model No.
KX-TH1212B
KX-TGA930T
Link-to-Cell Bluetooth Convergence
Solution
Black Version
(for U.S.A.)
© 2008 Panasonic Communications Co., Ltd. All
rights reserved. Unauthorized copying and distribu-
tion is a violation of law.
ORDER NO. KM40802523CE
F21

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Summary of Contents for Panasonic KX-TH1211B

  • Page 1 ORDER NO. KM40802523CE Telephone Equipment KX-TH1211B Model No. KX-TH1212B KX-TGA930T Link-to-Cell Bluetooth Convergence Solution Black Version (for U.S.A.) © 2008 Panasonic Communications Co., Ltd. All rights reserved. Unauthorized copying and distribu- tion is a violation of law.
  • Page 2 KX-TH1211B/KX-TH1212B/KX-TGA930T...

  • Page 3: Table Of Contents

    KX-TH1211B/KX-TH1212B/KX-TGA930T TABLE OF CONTENTS PAGE PAGE 1 Safety Precautions----------------------------------------------- 4 13.3. Schematic Diagram (Base Unit_RF Part)-------- 104 1.1. For Service Technicians --------------------------------- 4 13.4. Schematic Diagram (Base Unit_BT Unit) -------- 106 2 Warning -------------------------------------------------------------- 4 13.5. Schematic Diagram (Base Unit_BT Unit_RF 2.1.

  • Page 4: Safety Precautions

    KX-TH1211B/KX-TH1212B/KX-TGA930T 1 Safety Precautions 1.1. For Service Technicians • Repair service shall be provided in accordance with repair technology information such as service manual so as to pre- vent fires, injury or electric shock, which can be caused by improper repair work.

  • Page 5: Discarding Of P. C. Board

    KX-TH1211B/KX-TH1212B/KX-TGA930T 2.2.1. Suggested PbF Solder There are several types of PbF solder available commercially. While this product is manufactured using Tin, Silver, and Copper (Sn+Ag+Cu), you can also use Tin and Copper (Sn+Cu), or Tin, Zinc, and Bismuth (Sn+Zn+Bi). Please check the manufac- turer's specific instructions for the melting points of their products and any precautions for using their product with other materi- als.

  • Page 6: Specifications

    KX-TH1211B/KX-TH1212B/KX-TGA930T 3 Specifications Note: • Design and specifications are subject to change without notice. Note for Service: • Optional headset: KX-TCA60, KX-TCA86, KX-TCA92, KX-TCA93, KX-TCA94, KX-TCA95...

  • Page 7: Technical Descriptions

    KX-TH1211B/KX-TH1212B/KX-TGA930T 4 Technical Descriptions 4.1. Circuit Configuration of TH12xx Series Phones TH12xx consists of DECT cordless telephone and Bluetooth Unit. Both voices of transmission and reception are transferred in analog signals. DSP on DECT side controls the cordless telephone system, which makes control data communication with DSP on Bluetooth side in serial data.

  • Page 8: Us-Dect Description

    KX-TH1211B/KX-TH1212B/KX-TGA930T 4.2. US-DECT Description The frequency range of 1.92 GHz-1.93 GHz is used. Transmitting and receiving carrier between base unit and handset is same fre- quency. Refer to Frequency Table (P.99). 4.2.1. TDD Frame Format 4.2.2. TDMA system This system is the cycles of 10 ms, and has 6 duplex paths, but maximum duplex communication path is 5 because of dummy bearer use.
  • Page 9 KX-TH1211B/KX-TH1212B/KX-TGA930T 4.2.3. Signal Flowchart in the Radio Parts Reception A voice signal from TEL line is encoded to digital data "TXDATA" by DSP (IC501) in a base unit. Then TXDATA goes to RF PART, and it's modulated to 1.9 GHz. The RF signal is amplified and fed to a selected antenna.

  • Page 10: Bt Unit Description

    KX-TH1211B/KX-TH1212B/KX-TGA930T 4.3. BT Unit Description 4.3.1. Frequency The frequency range of 2,402 MHz - 2,480 MHz is used. Refer to Frequency Table (P.56). 4.3.2. Bluetooth Technology This communication system uses the Chipset of Bluetooth technology. Bluetooth Technology make this system possible to use multiple Voice and Data link simultaneously.

  • Page 11: Explanation Of Link Data Communication (Bt Unit)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 4.4. EXPLANATION OF LINK DATA COMMUNICATION (BT Unit) 4.4.1. Make Call 4.4.2. Answer Call 4.4.3. Terminate Communication...

  • Page 12: Block Diagram (Base Unit_Main)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 4.5. Block Diagram (Base Unit_Main)

  • Page 13: Block Diagram (Base Unit_Rf Part)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 4.6. Block Diagram (Base Unit_RF Part)

  • Page 14: Block Diagram (Bt Unit_Rf Part)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 4.7. Block Diagram (BT Unit_RF Part)

  • Page 15: Circuit Operation (Base Unit)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 4.8. Circuit Operation (Base Unit) General Description: (DSP, Flash Memory) is a digital speech/signal processing system that implements all the functions of speech compression and memory management required in a digital telephone. The DSP system is fully controlled by a host processor DSP. The host processor provides activation and control of all that functions as follows.
  • Page 16 KX-TH1211B/KX-TH1212B/KX-TGA930T 4.8.2. Flash Memory (IC601) Following information data is stored. • Voice signal ex: Pre-recorded Greeting message, Incoming message • Settings ex: message numbers, ID code, Flash Time, Tone/Pulse 4.8.3. Power Supply Circuit Function: The power supply voltage from AC adaptor is converted to the desired voltage of each block.
  • Page 17 KX-TH1211B/KX-TH1212B/KX-TGA930T 4.8.4. 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 IC331 and power is supplied to the DSP.

  • Page 18: Telephone Line Interface

    KX-TH1211B/KX-TH1212B/KX-TGA930T 4.8.5. Telephone Line Interface Telephone Line Interface Circuit: Function • Bell signal detection • ON/OFF hook and pulse dial circuit • Side tone circuit Bell signal detection and OFF HOOK circuit: In the idle mode, Q141 is open to cut the DC loop current and decrease the ring load. When ring voltage appears at the Tip (T) and Ring (R) leads (When the telephone rings), the AC ring voltage is transferred as follows: T →...

  • Page 19: Parallel Connection Detect Circuit

    KX-TH1211B/KX-TH1212B/KX-TGA930T 4.8.6. 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 20 KX-TH1211B/KX-TH1212B/KX-TGA930T 4.8.7. 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.
  • Page 21 KX-TH1211B/KX-TH1212B/KX-TGA930T 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 22: Circuit Operation (Bt Unit)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 4.9. Circuit Operation (BT Unit) General Description: DSP is a digital speech/signal processing system. DSP of the BT board provides these processing and controlling concerning cellular connections. 4.9.1. DSP (Digital Speech/Signal Processing: IC501) • Establish and control the connection with cell phone The DSP establishes and manages the connection of cell phones with Bluetooth technics.
  • Page 23 KX-TH1211B/KX-TH1212B/KX-TGA930T 4.9.3. Power Supply Circuit Function: The power supply voltage from AC adaptor is supplied to each IC and block as shown below.
  • Page 24 KX-TH1211B/KX-TH1212B/KX-TGA930T 4.9.4. Reset Circuit Function: This circuit is used to initialize the microcomputer when it incorporates an AC adaptor. Circuit Operation: This circuit consists of the following blocks. • Circuit shaping the voltage from AC adaptor (IC301, etc.) • Circuit splitting the reset signal into each IC such as DSP and Memory (IC502) •...
  • Page 25 KX-TH1211B/KX-TH1212B/KX-TGA930T The unit starts to operate when VDD goes up to 3.0 V or more in the circuit voltage diagram as shown below.

  • Page 26: Block Diagram (Handset)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 4.10. Block Diagram (Handset) IC541 X501 EEPROM 13.824 MHz Q531 CHARGE CHG_DET DETECT Q362, Q364 RF part CHG_CTL CHARGE CONTROL SYN_OUT SYN_EN SYN_CLK RESET SYN_DATA Q361 D361 SLOT_CTROL CHARGE RADIO_EN IC374 TXDATA RXDATA IC371 2.7 V V_PA REGULATOR VCCA...

  • Page 27: Block Diagram (Handset_Rf Part)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 4.11. Block Diagram (Handset_RF Part)

  • Page 28: Circuit Operation (Handset)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 4.12. Circuit Operation (Handset) 4.12.1. Construction The circuit mainly consists of DSP and RF part as shown in the block diagram. 4.12.1.1. DSP: IC501 Function • Battery Low, Power down detect circuit • Ringer Generation • Interface circuit RF part, Speaker, Mic, LED, Key scan, LCD, Headset...
  • Page 29 KX-TH1211B/KX-TH1212B/KX-TGA930T 4.12.2. Power Supply Circuit Voltage is supplied separately to each block.

  • Page 30: Charge Circuit

    KX-TH1211B/KX-TH1212B/KX-TGA930T 4.12.3. Charge Circuit When the handset is put on the cradle of the base unit, the power is supplied from CHARGE+ and CHARGE- terminals to charge the battery via R366 or Q361. The voltage between CHARGE+ and CHARGE- flows Q531 → pin 38 of IC501, where the charge is detected.

  • Page 31: Sending Signal

    KX-TH1211B/KX-TH1212B/KX-TGA930T 4.12.5. Sending Signal The voice signal from the microphone is input to DSP (90, 91). CN431 is the headset jack. When the headphone is connected, the R436/R437 detects it. The input from the microphone of the handset (MIM, MIP) is cut and the microphone signal from the headset is input to DSP (95).

  • Page 32: Circuit Operation (Rf Part)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 4.13. Circuit Operation (RF Part) General Description: RF part includes Transmitter and Receiver functions. Digital signals (Mainly voice data) that come from DSP, are modulated and are transmitted. On the other hand, received signals are demodulated and go out to DSP.

  • Page 33: Circuit Operation (Charger Unit)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 4.14. Circuit Operation (Charger Unit) The voltage from the AC adaptor is supplied to the charge circuits. Main charge (180~250 mA at the Battery) of maximum 7- hours is started soon after the handset is placed on the charger unit. Then it changes to Trickle charge to prevent from over- charging.

  • Page 34: Signal Route

    KX-TH1211B/KX-TH1212B/KX-TGA930T 4.15. Signal Route...
  • Page 35 KX-TH1211B/KX-TH1212B/KX-TGA930T RF part signal route...

  • Page 36: Location Of Controls And Components

    KX-TH1211B/KX-TH1212B/KX-TGA930T 5 Location of Controls and Components 5.1. Controls 5.1.2. Handset 5.1.1. Base Unit...

  • Page 37: Display/Indicators

    KX-TH1211B/KX-TH1212B/KX-TGA930T 5.2. Display/Indicators...

  • Page 38: Installation Instructions

    KX-TH1211B/KX-TH1212B/KX-TGA930T 6 Installation Instructions 6.1. Connections...

  • Page 39: Battery

    KX-TH1211B/KX-TH1212B/KX-TGA930T 6.2. Battery 6.2.2. Battery Charge 6.2.1. Battery Installation and Replacement Note for service: The battery 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.
  • Page 40 KX-TH1211B/KX-TH1212B/KX-TGA930T 6.2.4. Panasonic Ni-MH Battery Performance (supplied batteries)

  • Page 41: Operating Instructions

    KX-TH1211B/KX-TH1212B/KX-TGA930T 7 Operating Instructions 7.1. Programmable Settings 7.1.1. Programming by Scrolling through the Display Menus...
  • Page 42 KX-TH1211B/KX-TH1212B/KX-TGA930T 7.1.2. Programming using the Direct Commands...
  • Page 43 KX-TH1211B/KX-TH1212B/KX-TGA930T...
  • Page 44 KX-TH1211B/KX-TH1212B/KX-TGA930T...

  • Page 45: Error Messages

    KX-TH1211B/KX-TH1212B/KX-TGA930T 7.2. Error Messages...

  • Page 46: Troubleshooting

    KX-TH1211B/KX-TH1212B/KX-TGA930T 7.3. Troubleshooting...
  • Page 47 KX-TH1211B/KX-TH1212B/KX-TGA930T...
  • Page 48 KX-TH1211B/KX-TH1212B/KX-TGA930T...
  • Page 49 KX-TH1211B/KX-TH1212B/KX-TGA930T...
  • Page 50 KX-TH1211B/KX-TH1212B/KX-TGA930T...

  • Page 51: Test Mode

    KX-TH1211B/KX-TH1212B/KX-TGA930T 8 Test Mode 8.1. Adjustment and Test Mode Flow Chart 8.1.1. TX-CW Mode for Base Unit_DECT Connect U-ART Jig to P.C.B. and Power on. Send command as follows by PC. Note: : Enter key : Space key Cross Reference: Check Table for RF part (P.65).
  • Page 52 KX-TH1211B/KX-TH1212B/KX-TGA930T 8.1.3. TX-CW Mode for Handset Note: (*1) LCD displays the Channel number. (exception: default/ CH00 = 0ch.) (*2) Refer to Check Table for RF part (P.65).
  • Page 53 KX-TH1211B/KX-TH1212B/KX-TGA930T 8.1.4. RX-CW Test Mode for Handset Note: (*1) LCD displays the Channel number. (exception: default/ CH00 = 0ch.) (*2) Refer to Check Table for RF part (P.65).
  • Page 54 KX-TH1211B/KX-TH1212B/KX-TGA930T 8.1.5. Test Link Mode for Handset Note: (*1) LCD displays the Channel number. (exception: default/ CH00 = 0ch.) (*2) If can not proceed to the next step, refer to Registering a Handset to a Base Unit (P.63). (*3) for factory use only.
  • Page 55 KX-TH1211B/KX-TH1212B/KX-TGA930T 8.1.6. Adjustment Mode for Handset Cross Reference (*1) Adjust Battery Low Detector Voltage (Handset) (P.96) Note: (*2) These are the default values. (*3) These values may not be fixed depending on the battery strength.
  • Page 56 KX-TH1211B/KX-TH1212B/KX-TGA930T 8.1.7. Frequency Table Frequency Frequency Frequency (hex) (MHz) (hex) (MHz) (hex) (MHz) 2402 2435 2468 2403 2436 2469 2404 2437 2470 2405 2438 2471 2406 2439 2472 2407 2440 2473 2408 2441 2474 2409 2442 2475 2410 2443 2476...

  • Page 57: Service Mode

    KX-TH1211B/KX-TH1212B/KX-TGA930T 9 Service Mode 9.1. How to Clear User Setting Units are reset to the Factory settings by this operation (stored Phone numbers, Caller list and etc.). This operation should not be performed for a usual repair. 9.1.1. Handset Note: (*1) Be sure to short the battery terminals of the handset with a lead wire, etc.

  • Page 58: Troubleshooting Guide

    KX-TH1211B/KX-TH1212B/KX-TGA930T 10 Troubleshooting Guide 10.1. Troubleshooting Flowchart Cross Reference: Check Power (P.59) Check Battery Charge (P.61) Check Link (P.61) Check the RF part (P.62) Check Handset Transmission (P.69) Check Handset Reception (P.69) Check Caller ID (P.69)

  • Page 59: Check Power

    KX-TH1211B/KX-TH1212B/KX-TGA930T 10.1.1. Check Power Note: Flash Memory is IC601. DSP is IC501. (*1) Refer to Specifications (P.6) for part number and supply voltage of AC adaptor.
  • Page 60 KX-TH1211B/KX-TH1212B/KX-TGA930T Note: DSP is IC501. (*1) Refer to Specifications (P.6) for part number and supply voltage of AC adaptor. (*2) Refer to Failure Analysis of DSP, FLASH ROM (BT Unit) (P.75).

  • Page 61: Check Battery Charge

    KX-TH1211B/KX-TH1212B/KX-TGA930T 10.1.2. Check Battery Charge Note: Flash Memory is IC601. (*1) Refer to Specifications (P.6) for part number and supply voltage of AC adaptor. 10.1.3. Check Link Note: Flash Memory is IC601. DSP is IC501. (*1) Refer to Finding out the Defective part (P.62).

  • Page 62: Check The Rf Part

    KX-TH1211B/KX-TH1212B/KX-TGA930T 10.1.4. Check the RF part 10.1.4.1. 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: (*1) HS: Handset (*2) BU: Base Unit...
  • Page 63 KX-TH1211B/KX-TH1212B/KX-TGA930T 10.1.4.1.1. Registering a Handset to a Base Unit 10.1.4.1.2. Deregistering a Handset 10.1.4.1.3. Deregistering All Handsets and All Cell Phones by the Base Unit...
  • Page 64 KX-TH1211B/KX-TH1212B/KX-TGA930T 10.1.4.2. RF Check Flowchart Each item (1 ~ 6) of RF Check Flowchart corresponds to Check Table for RF part (P.65). Please refer to the each item. Note: (*1) Refer to Things to Do after Replacing IC or X’tal (P.93).
  • Page 65 KX-TH1211B/KX-TH1212B/KX-TGA930T 10.1.4.3. Check Table for RF part Item BU (Base Unit) Check HS (Handset) Check Link Confirmation Normal 1. Register Regular HS to BU (to be 1. Register HS (to be checked) to Regular checked). HS, BU Mode [Normal Mode] 2.
  • Page 66 KX-TH1211B/KX-TH1212B/KX-TGA930T 10.1.4.4. TEST RANGE Check Circuit block which range is defective can be found by the following check. Item BU (Base Unit) Check HS (Handset) Check Range Confirmation TX TEST 1. Register Regular HS to BU (to be checked). 1. Register HS (to be checked) to Regular BU.
  • Page 67 KX-TH1211B/KX-TH1212B/KX-TGA930T 10.1.4.5. RF-DSP Interface Signal Wave Form Control signal for Base Unit (Normal mode) Control signal for Base Unit (Normal mode) RADEOEN 2 ms SLOT_CTRL SYN_DATA SYN_CLK SYN_EN Zoom 1 µs 1 us 1 us 1 us SYN_DATA SYN_CLK SYN_EN...
  • Page 68 KX-TH1211B/KX-TH1212B/KX-TGA930T Base Unit TR-DATA Signal (Normal mode) Base Unit TR-DATA Signal (Normal mode) Base unit sends a dummy slot and receves all 6 slots every frame in normal mode. Pin Number (Base unit) ITEM MODE IC701 IC501 (BU) [HS] or [REG HS]...

  • Page 69: Check Handset Transmission

    KX-TH1211B/KX-TH1212B/KX-TGA930T 10.1.5. Check Handset Transmission Cross Reference: Signal Route (P.34) 10.1.6. Check Handset Reception Cross Reference: Signal Route (P.34) Note: When checking the RF part, Refer to Check the RF part (P.62). 10.1.7. Check Caller ID Cross Reference: Telephone Line Interface (P.18) Calling Line Identification (Caller ID)/Call Waiting Caller ID (P.20)
  • Page 70 KX-TH1211B/KX-TH1212B/KX-TGA930T 10.1.8. Registering a Cellular Phone 10.1.9. Deregistering a Cellular Phone...
  • Page 71 KX-TH1211B/KX-TH1212B/KX-TGA930T 10.1.10. BT Unit PCB - DECT PCB Interface Signal Waveform Communication of DECT and BT Unit As for TH1211, the DSPs on DECT side and BT Unit talk each other to establish CELL PHONE communication.
  • Page 72 KX-TH1211B/KX-TH1212B/KX-TGA930T 10.1.11. RF (BT) - DSP (BT) Interface Signal Waveform 10.1.11.1. Waveform of SYN_CLK and SYN_DATA Confirm the waveforms shown in figures. 1. Turn OFF the Base unit. 2. Put the Handset in Registration mode. 3. Turn ON the Base unit and put it in Standby mode.
  • Page 73 KX-TH1211B/KX-TH1212B/KX-TGA930T 10.1.11.2. Waveform of TX and RX Control Line Confirm the waveforms shown in figures, which are output for 120 sec. from DSP after following operations. 1. Turn OFF the Base unit. 2. Put the Handset in Registration mode. 3. Turn ON the Base unit and put it in Standby mode.
  • Page 74 KX-TH1211B/KX-TH1212B/KX-TGA930T RX Control Line (Triggered by TX_EN with 5 V/div, 0.4 ms/div) in RX-mode TX wave on Spectrum Analyzer in Burst TX-mode...

  • Page 75: Failure Analysis Of Dsp, Flash Rom (Bt Unit)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 10.2. Failure Analysis of DSP, FLASH ROM (BT Unit) It is difficult to find the defective parts causing operation failure in this unit because DSP and FLASH ROM are connected to the same bus line. This unit has two ports as the means to watch the operation of DSP, FLASH ROM, etc. during the start-up process. The following conditions can be confirmed with these two ports.
  • Page 76 KX-TH1211B/KX-TH1212B/KX-TGA930T...
  • Page 77 KX-TH1211B/KX-TH1212B/KX-TGA930T Waveform A XTAL Parts1 IC305, C317, C318, C322, C323 L301, C316, C312 Q501, Q502, R584, R585, R586 C545, R583 Parts2 X501, R573, C532, C538 RA550, RA551, RA552, RA553, RA554, RA555 R520, R523, C501 Cross Reference: Downloading the Flash Program (P.78)

  • Page 78: Usb Driver Installation

    KX-TH1211B/KX-TH1212B/KX-TGA930T 10.2.1. Downloading the Flash Program Note: • The below operations are explained for the TH12xx base unit. • USB connection is needed for the settings. For the connection methods, refer to Connection Methods (Base Unit) (P.81). 10.2.1.1. USB Driver Installation Preparation: •...
  • Page 79 KX-TH1211B/KX-TH1212B/KX-TGA930T 10.2.1.3. Program (1) Supply AC power to TH12xx and make sure it is ON. (2) Connect TH12xx to PC with a USB cable, and then [Erase] button will be selectable. (3) Click the [Erase] button to erase flash memory.
  • Page 80 KX-TH1211B/KX-TH1212B/KX-TGA930T (5) Confirm the completion of the download (It takes about 90 seconds.) and press the [OK] button. Note: The download time depends on the model. (6) Press the [Exit] button. Press the [Exit] button. (8) Disconnect the AC adaptor from TH12xx.
  • Page 81 KX-TH1211B/KX-TH1212B/KX-TGA930T 10.2.2. Connection Methods (Base Unit) Short-circuit connection 1. Open the cabinet cover. 2. Create a short-circuit by connecting 3 points on the p.c. board (L4_Boot A, L4_Boot B, and plus terminal of C531) by wire sol- dering. Refer to Fig.1 Short-circuit Connecting points (Base Unit).
  • Page 82 KX-TH1211B/KX-TH1212B/KX-TGA930T Fig. 2 USB JIG cable ANT1_L4 ANT0_L4 ANT1_GND L1_RX_DATA ANT0_GND VBUS To PC L1_TX_DATA USB JIG cable USBG VBUS USBG D601 X501 BCLK IC501 Q402 IC502 Q401 Fig. 3 USB Connecting Points (Base Unit_BT Unit)

  • Page 83: How To Replace The Flat Package Ic

    KX-TH1211B/KX-TH1212B/KX-TGA930T 10.3. How to Replace the Flat Package IC 10.3.1. Preparation • PbF (: Pb free) Solder • Soldering Iron Tip Temperature of 700 °F ± 20 °F (370 °C ± 10 °C) Note: We recommend a 30 to 40 Watt soldering iron. An expert may be able to use a 60 to 80 Watt iron where someone with less experience could overheat and damage the PCB foil.
  • Page 84 KX-TH1211B/KX-TH1212B/KX-TGA930T 10.3.3. How to Install the IC 1. Temporarily fix the FLAT PACKAGE IC, soldering the two marked pins. *Check the accuracy of the IC setting with the corresponding soldering foil. 2. Apply flux to all pins of the FLAT PACKAGE IC.

  • Page 85: How To Replace The Llp (Leadless Leadframe Package) Ic

    KX-TH1211B/KX-TH1212B/KX-TGA930T 10.4. How to Replace the LLP (Leadless Leadframe Package) IC 10.4.1. Preparation • PbF (: Pb free) Solder • Soldering Iron Tip Temperature of 700 °F ± 20 °F (370 °C ± 10 °C) Note: We recommend a 30 to 40 Watt soldering iron. An expert may be able to use a 60 to 80 Watt iron where someone with less experience could overheat and damage the PCB foil.
  • Page 86 KX-TH1211B/KX-TH1212B/KX-TGA930T 10.4.4. 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. : PNMC1002Z 1. Put the shield case. 2. Solder the surroundings.
  • Page 87 KX-TH1211B/KX-TH1212B/KX-TGA930T 10.4.6. How to Install the IC 1. Place the solder a little on the land where the radiation GND pad on IC bottom is to be attached. 2. Place the solder a little on the land where IC pins are to be attached, then place the IC.

  • Page 88: Disassembly And Assembly Instructions

    KX-TH1211B/KX-TH1212B/KX-TGA930T 11 Disassembly and Assembly Instructions 11.1. Disassembly Instructions 11.1.1. Base Unit...
  • Page 89 KX-TH1211B/KX-TH1212B/KX-TGA930T 11.1.2. Handset...
  • Page 90 KX-TH1211B/KX-TH1212B/KX-TGA930T 11.1.3. Charger Unit...

  • Page 91: How To Replace The Handset Lcd

    KX-TH1211B/KX-TH1212B/KX-TGA930T 11.2. How to Replace the Handset LCD...
  • Page 92 KX-TH1211B/KX-TH1212B/KX-TGA930T...

  • Page 93: Measurements And Adjustments

    KX-TH1211B/KX-TH1212B/KX-TGA930T 12 Measurements and Adjustments 12.1. Things to Do after Replacing IC or X’tal 12.1.1. How to Make a U-ART Jig (Base Unit) 1. Preparation Parts List Ref No. Part No. PCB (for U-ART Jig) PNUPUARTJIG2 C3, C4, C5, C6, C7 PQCUV1C105KB 16 V/1 µF CAPACITOR...
  • Page 94 KX-TH1211B/KX-TH1212B/KX-TGA930T 12.1.3. Test Mode (Base Unit) PC Setting Preparation: 1. Select “Serial port” from the “Setup” menu (*1). 2. Enter the information as shown in the following figure. 3. Click the [OK] button. 4. Select “Save setup” from the “Setup” menu.

  • Page 95: Check And Adjust Frequency

    KX-TH1211B/KX-TH1212B/KX-TGA930T 12.2. Check and Adjust Frequency 12.2.1. Preparation Equipment: Frequency counter Check Point for measurement: BCK Checking tolerance: 13.824 MHz ± 100 Hz (Base Unit)/13.824 MHz ± 100 Hz (Handset) 12.2.2. Check and Adjust Frequency (Base Unit_DECT) Connect U-ART Jig to P.C.B. and Power on. Send command as follows by PC.
  • Page 96 KX-TH1211B/KX-TH1212B/KX-TGA930T 12.2.4. Adjust Battery Low Detector Voltage (Handset) After handset's DSP (IC501) or EEPROM (IC541) replacement, Re-writing Battery Low voltage to EEPROM is required. With following handset Adjustment Flow, adjust DC power supply and DC voltmeter by the procedure below.

  • Page 97: Base Unit Reference Drawing

    KX-TH1211B/KX-TH1212B/KX-TGA930T 12.3. Base Unit Reference Drawing When connecting the simulator equipment for checking, please refer to below. 6.5 V Spectrum Analyzer ANT2_HOT ANT1_HOT POWER DCP2 ANT1_GND ANT1_L4 ANT2_GND Spectrum Analyzer RING DCM2 ANT0_L4 C-POWER ANT1_GND L1_RX_DATA ANT0_GND C757 VBUS L1_TX_DATA...

  • Page 98: Handset Reference Drawing

    KX-TH1211B/KX-TH1212B/KX-TGA930T 12.4. Handset Reference Drawing When connecting the simulator equipment for checking, please refer to below. Note: (*1) is referred to No.3 of Check Table for RF part (P.65).

  • Page 99: Frequency Table

    KX-TH1211B/KX-TH1212B/KX-TGA930T 12.5. Frequency Table Ch. (hex) TX/RX Frequency (MHz) Channel 0 1928.448 Channel 1 1926.720 Channel 2 1924.992 Channel 3 1923.264 Channel 4 1921.536...
  • Page 100 KX-TH1211B/KX-TH1212B/KX-TGA930T Memo...

  • Page 101: Schematic Diagram

    KX-TH1211B/KX-TH1212B/KX-TGA930T 13 Schematic Diagram 13.1. For Schematic Diagram 13.1.1. Base Unit (Schematic Diagram (Base Unit_DECT)) Notes: 1. DC voltage measurements are taken with voltmeter from the negative voltage line. 2. The schematic diagrams may be modified at any time with the development of new technology.

  • Page 102: Schematic Diagram (Base Unit_Dect)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 13.2. Schematic Diagram (Base Unit_DECT) RF interface 3.2V Q382 V_PA V_PA (VPA) V_RF V_RF 3.3V 4.0V BCLK C521 0.1u BCLK R521 SYN_OUT SYN_OUT SYN_EN SYN_EN SYN_CLK SYN_CLK For TH12 series SYN_DATA SYN_DATA SLOT_CTRL SLOT_CTRL *WBX03 RADIO_EN RADIO_EN 7pin L473...
  • Page 103 KX-TH1211B/KX-TH1212B/KX-TGA930T 4.0V 6.5~12V 4.0V CONVERTOR 3.3V IC331 L300 22uH VOUT REFERENCE VDET 1XX : TEL LINE 3XX : POWER, CHARGE *RESET 4XX : RESET, MIC, SP 5XX : DSP, RF I/F Charge detection Q300 6XX : FLASH, KEY, LCD 7XX : RF(2.4G) *Q361 8XX : RF(5.8G)

  • Page 104: Schematic Diagram (Base Unit_Rf Part)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 13.3. Schematic Diagram (Base Unit_RF Part)
  • Page 105 KX-TH1211B/KX-TH1212B/KX-TGA930T Memo...

  • Page 106: Schematic Diagram (Base Unit_Bt Unit)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 13.4. Schematic Diagram (Base Unit_BT Unit) GND_0 RF UNIT ANT0_L1 ANT1_L1 ANT0_GND ANT1_GND VDD_3.3V ANTO_L4 ANT1_L4 RA550 RA552 RA553 RA554 TEST RA551 R712 L4_BANT1 RXANA RSSI Receiving data from cellular R523 RA555 RF_RST R701 NC L1_RX_DATA R702 SHCTRL R703...
  • Page 107 KX-TH1211B/KX-TH1212B/KX-TGA930T CELL2_R XA11 R507 R506 P12 P10 VDD_3.3V LIN0 LIN0 R502 To TG93xx C519 0.1u From cellular AGPIO0 FGPIO2 SCLK LOUT0 BGPIO11 RX_DATA BGPIO10 LOUT0 R503 BGPIO5 BGPIO4 To cellular C541 0.1u BGPIO3 BPAEN R567 BGPIO2 R568 BTXD BGPIO1 R569...

  • Page 108: Schematic Diagram (Base Unit_Bt Unit_Rf Part)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 13.5. Schematic Diagram (Base Unit_BT Unit_RF Part) 4.0V 6.5V Q303 L304 22uH IC301 ON/*OFF VOUT DCDC_IC C350 4.0V RFPA_3.3V IC750 BPAEN BPAEN 001 VOUT IC751 RF_3.3V RF_PWR RF_PWR 001 VOUT VCCA_3.3V IC303 VOUT IC305 VDOUT RST 001 VDD_3.3V L301...
  • Page 109 KX-TH1211B/KX-TH1212B/KX-TGA930T Memo...

  • Page 110: Schematic Diagram (Handset_Main)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 13.6. Schematic Diagram (Handset_Main) RF circuit BCLK R540 BCLK C540 K0.1 TX_DATA TX_DATA SLOT_CTRL SLOT_CTRL RX_DATA RX_DATA RF_POWER DSP Part (control circuit) RF_POWER RF control line RADIO_EN R525 X501 RF_RSTN RF_RSTN 13.824MHz SYN_DATA SYN_DATA Flash memory for booting R501...
  • Page 111 KX-TH1211B/KX-TH1212B/KX-TGA930T TEST SIGNAL FREQUENCY: 1kHz Voice circuit SPPP SPPN SP phone RX (MIC Mute: ON) 1.8Vp-p/8 (Vol. Max) SP_PHONE *R436 Headset TX 50mVp-p/600 *R431 *CN431 L431 L432 *L434 *C435 HEADSET_JACK Headset RX 10uF 170mVp-p/150 (Vol. Max) RECEIVER Handset RX RA403...

  • Page 112: Schematic Diagram (Handset_Rf Part)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 13.7. Schematic Diagram (Handset_RF Part)

  • Page 113: Schematic Diagram (Charger Unit)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 13.8. Schematic Diagram (Charger Unit) R1 10 SCHEMATIC DIAGRAM (Charger Unit)
  • Page 114 KX-TH1211B/KX-TH1212B/KX-TGA930T Memo...

  • Page 115: Printed Circuit Board

    KX-TH1211B/KX-TH1212B/KX-TGA930T 14 Printed Circuit Board 14.1. Circuit Board (Base Unit_DECT) 14.1.1. Component View ANT2 ANT1_HOT2 ANT2_HOT2 ANT1 3.0A F301 C901 C306 C301 IC300 R308 C797 C793 L795 R303 C305 Q300 R304 C308 C304 C791 R782 C756 C772 D781 C761 C782...
  • Page 116 KX-TH1211B/KX-TH1212B/KX-TGA930T 14.1.2. Bottom Side View ANT2_HOT ANT1_HOT ANT2_GND POWER only for TGxxxx DCP2 ANT1_GND Series C-POWER RING DCM2 only for TH12xx Series C757 Digital Vcc only for TH12xx Series BCLK 13.824 MHz R612 R611 BCLK DVCC C601 C612 KEY_GND C361...

  • Page 117: Circuit Board (Base Unit_Rf Part)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 14.2. Circuit Board (Base Unit_RF Part) C797 C793 L795 C791 R782 D781 C756 C772 C782 C761 C713 C755 C711 C738 C712 C701 C743 C721 L721 IC701 RF_Vcc (3.0 V) C722 C714 V_RF (4.0 V) C742 KX-TH1211/1212 CIRCUIT BOARD (Base Unit_RF Part (Component View))
  • Page 118 KX-TH1211B/KX-TH1212B/KX-TGA930T Memo...

  • Page 119: Circuit Board (Base Unit_Bt Unit)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 14.3. Circuit Board (Base Unit_BT Unit) 14.3.1. Component View ANT1 ADJUST ANT_GND RF_UNIT ANT1_L1 ANT0 ANT0_L1 SPITXD SPI_EN SPI_CLK TX_DATA LOCATOR RA501 Boot A RF_3.3 V Boot B LOUT IC751 RFPA_3.3 V IC750 VDD_3.3 V Q501 IC305 Q502 IC303 VCCA_3.3 V...
  • Page 120 KX-TH1211B/KX-TH1212B/KX-TGA930T 14.3.2. Bottom Side View ANT1_L4 ANT0_L4 ANT0 ANT1_GND RX_DATA L1_RX_DATA ANT0_GND TX_EN BANT0 RX_EN MO-D_EN RXGAIN SPIRXD L1_TX_DATA L1_TX_DATA USBG VBUS USB-G USBS D601 X501 BCLK BCLK LIN0 IC501 LOUT0 VDD_3.3 V Q402 IC502 Q401 6.5 V KX-TH1211/1212 CIRCUIT BOARD...

  • Page 121: Circuit Board (Handset_Main)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 14.4. Circuit Board (Handset_Main) 14.4.1. Component View ANT1_HOT4 ANT1 KX-TGA93 PQUP11558Z ANT1_HOT3 C797 C793 ANT2_GND L795 C791 ANT2 R782 ANT1_GND D781 C756 C772 C761 C782 C713 C755 C711 C738 C712 C701 C743 C721 ANT1_HOT2 RF_Vcc L721 IC701 C722 IC741 (2.7 V)
  • Page 122 KX-TH1211B/KX-TH1212B/KX-TGA930T 14.4.2. Bottom Side View R PbF KX-TGA93 PQUP11558Z LED557 LED556 LED555 LEFT MENU RIGHT TALK BACK NEXT PAUSE DOWN FLASH HOLD KX-TGA930 CIRCUIT BOARD (Handset_Main (Bottom Side View))

  • Page 123: Circuit Board (Handset_Rf Part)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 14.5. Circuit Board (Handset_RF Part) C797 C793 L795 C791 R782 D781 C756 C772 C761 C782 C713 C755 C711 C738 C712 C701 C743 C721 RF_Vcc L721 IC701 (2.7 V) C722 IC741 C714 V_RF/V_PA (3.1 V) C742 KX-TGA930 CIRCUIT BOARD (Handset_RF Part (Component View))

  • Page 124: Circuit Board (Charger Unit)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 14.6. Circuit Board (Charger Unit) 14.6.1. Component View CIRCUIT BOARD (Charger Unit (Component View)) 14.6.2. Bottom Side View TP4 (GND) CIRCUIT BOARD (Charger Unit (Bottom Side View))

  • Page 125: Appendix Information Of Schematic Diagram

    KX-TH1211B/KX-TH1212B/KX-TGA930T 15 Appendix Information of Schematic Diagram 15.1. CPU Data (Base Unit_DECT) 15.1.1. IC501 Description High High_Z 60 NC Description High High_Z 61 NC GNDPA 62 NC SPOUPT 63 NC BMCCLK 64 NC NC(TXMOD) 65 NC 66 GND 67 VCC...

  • Page 126: Cpu Data (Base Unit_Bt Unit)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 15.2. CPU Data (Base Unit_BT Unit) 15.2.1. IC501 Description High High_Z C5 PULL DOWN D.IO Description High High_Z D5 KEY_A Active N9 N9 E11 RD/_BY N10 N10 D11 NC P10 P10 E12 NC P11 P11 D12 NC P12 P12...
  • Page 127 KX-TH1211B/KX-TH1212B/KX-TGA930T Description High High_Z Description High High_Z B6 XD11 D.IO High In/HighZ G12 VDD_3.3V A7 XD10 D.IO High In/HighZ K12 VDD_3.3V A8 XD9 D.IO High In/HighZ M11 VDD_3.3V C8 XD8 D.IO High In/HighZ M8 VDD_3.3V C3 XD7 D.IO High In/HighZ M6 VDD_3.3V...

  • Page 128: Cpu Data (Handset)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 15.3. CPU Data (Handset) IC501 15.3.1. Description High High_Z 61 NC Normal Description High High_Z 62 NC Normal GNDPA 63 KEYSTROBE_E Active SPOUTP 64 KEYSTROBE_D Active BCLK 65 KEYSTROBE_C Active Normal 66 KEYSTROBE_B Active 67 KEYSTROBE_A Active XOUT 68 GND...

  • Page 129: Explanation Of Ic Terminals (Dect_Rf Part)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 15.4. Explanation of IC Terminals (DECT_RF Part) IC701 15.4.1.

  • Page 130: Db56 (Dsp) Package Description

    KX-TH1211B/KX-TH1212B/KX-TGA930T 15.5. DB56 (DSP) Package Description...

  • Page 131: Terminal Guide Of The Ics, Transistors And Diodes

    KX-TH1211B/KX-TH1212B/KX-TGA930T 15.6. Terminal Guide of the ICs, Transistors and Diodes 15.6.1. Base Unit 15.6.2. Handset 15.6.3. Charger Unit...

  • Page 132: Exploded View And Replacement Parts List

    KX-TH1211B/KX-TH1212B/KX-TGA930T 16 Exploded View and Replacement Parts List 16.1. Cabinet and Electrical Parts (Base Unit)

  • Page 133: Cabinet And Electrical Parts (Handset)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 16.2. Cabinet and Electrical Parts (Handset) Note: (*1) This cable is fixed by welding. Refer to How to Replace the Handset LCD (P.91). (*2) Refer to Handset (P.131) of Terminal Guide of the ICs, Transistors and Diodes. (*3) Attach the SPACER (No. 129) to the exact location described above.

  • Page 134: Cabinet And Electrical Parts (Charger Unit)

    KX-TH1211B/KX-TH1212B/KX-TGA930T 16.3. Cabinet and Electrical Parts (Charger Unit)

  • Page 135: Accessories And Packing Materials

    KX-TH1211B/KX-TH1212B/KX-TGA930T 16.4. Accessories and Packing Materials 16.4.1. KX-TH1211B...
  • Page 136 KX-TH1211B/KX-TH1212B/KX-TGA930T 16.4.2. KX-TH1212B...
  • Page 137 KX-TH1211B/KX-TH1212B/KX-TGA930T 16.4.3. KX-TGA930T...

  • Page 138: Replacement Parts List

    KX-TH1211B/KX-TH1212B/KX-TGA930T 16.5. Replacement Parts List 16.5.1.2. Main P.C. Board Parts Note: 1. RTL (Retention Time Limited) (*1) When you have replaced IC501, IC601 or X501, make Note: adjustments. Refer to Check and Adjust Frequency The “RTL” marking indicates that its Retention Time is (Base Unit_DECT) (P.95).
  • Page 139 KX-TH1211B/KX-TH1212B/KX-TGA930T Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R171 ERJ2GEJ220 C531 ECUE1A104KBQ 0.1 R172 ERJ3GEYJ104 100k C601 ECUE1A104KBQ 0.1 R175 ERJ3GEYJ561 C660 ECUE1A104KBQ 0.1 R176 ERJ2GEJ101 C701 ECUE1H100DCQ 10p...
  • Page 140 KX-TH1211B/KX-TH1212B/KX-TGA930T Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks LED401 LNJ308G8JRA DIODE(SI) C534 ECUV1C104KBV 0.1 LED402 LNJ308G8JRA DIODE(SI) C535 PQCUV0J106KB 10 LED404 PQVDBR1111C DIODE(SI) C536 ECUV1C104KBV 0.1 LED405 PQVDBR1111C DIODE(SI)
  • Page 141 KX-TH1211B/KX-TH1212B/KX-TGA930T 16.5.2.2. Main P.C. Board Parts Safety Ref. Part No. Part Name & Description Remarks Note: R374 ERJ2GEJ224 220k (*1) When you have replaced IC501, IC541 or X501, make R376 ERJ2GEJ105X adjustments. Refer to Check and Adjust Frequency R377 ERJ2GEJ225 2.2M...

  • Page 142: Charger Unit

    ECUE1A104KBQ 0.1 (*1) You can download and refer to the Operating Instruc- C721 ECUE1H101JCQ 100p tions (Instruction book) on TSN Server. C722 ECUE1H121JCQ 120p C737 ECUE1C103KBQ 0.01 16.5.4.1. KX-TH1211B C738 ECUE1H100DCQ 10p C742 ECUV1A474KBV 0.47 C743 ECUV1A105KBV 1 Safety Ref.

  • Page 143: Fixtures And Tools

    KX-TH1211B/KX-TH1212B/KX-TGA930T 16.5.4.3. KX-TGA930T Safety Ref. Part No. Part Name & Description Remarks A201 PQLV209T AC ADAPTOR (for Charger Unit) A202 PNQX1006Z INSTRUCTION BOOK (*1) A203 PQQW15385Z LEAFLET, #800 A204 PNKE1004Z1 HANGER, BELT CLIP ABS-HB P201 XZB08X25B02 PROTECTION COVER (for Handset)

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