Panasonic KX-TC1232JX Service Manual
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Panasonic KX-TC1232JX Service Manual

Panasonic KX-TC1232JX Service Manual

Cordless answering system
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Telephone Equipment
KX-TC1232JXB
Cordless Answering System
Black Version
(for Asia, Middle Near East and Other areas)
© 2001 Kyushu Matsushita Electric Co., Ltd. All
rights
reserved.
distribution is a violation of law.
ORDER NO. KM40107830C3
Unauthorized
copying
and

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Zeinab
January 19, 2025

How can i manage the numbervof rings before auto answer or activating the recorded message

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Summary of Contents for Panasonic KX-TC1232JX

  • Page 1 ORDER NO. KM40107830C3 Telephone Equipment KX-TC1232JXB Cordless Answering System Black Version (for Asia, Middle Near East and Other areas) © 2001 Kyushu Matsushita Electric Co., Ltd. All rights reserved. Unauthorized copying distribution is a violation of law.

  • Page 2: Table Of Contents

    KX-TC1232JXB CONTENTS Page Page 1 STANDARD BATTERY LIFE 7.7. Check Battery Charge 1.1. Battery Strength 7.8. Check Link 1.2. Recharge 7.9. Check Handset Transmission 1.3. Battery Information 7.10. Check Handset Reception 1.4. Battery Replacement 7.11. Check Call ID 1.5. Standby mode (While the handset is off the base unit) 7.12.
  • Page 3 KX-TC1232JXB 13.5. Waveform of DATA used for cordless transmission and 21 CABINET AND ELECTRICAL PARTS LOCATION (BASE UNIT) reception 14 BLOCK DIAGRAM (BASE UNIT) 22 CABINET AND ELECTRICAL PARTS LOCATION (HANDSET) 64 15 CIRCUIT OPERATION 23 ACCESSORIES AND PACKING MATERIALS 15.1.

  • Page 4: Standard Battery Life

    The battery strength is as shown in the chart below. 1.2. Recharge 1.3. Battery Information After your Panasonic battery is fully charged: Operation Operating time While in use (TALK) Up to about 6 hours While not in use (Standby)

  • Page 5: Battery Replacement

    KX-TC1232JXB 1.4. Battery Replacement 1.5. Standby mode (While the handset is off the base unit) The handset goes into the standby mode after you finish using the handset (making/answering a call, viewing the Caller List or directory list etc.). The display is blank, but the handset can receive calls. The battery operating time is conserved in this mode.

  • Page 6: Location Of Controls

    KX-TC1232JXB 2 LOCATION OF CONTROLS 2.1. Base Unit...

  • Page 7: Handset

    KX-TC1232JXB 2.2. Handset...

  • Page 8: Connection

    3 CONNECTION 1. Connect as shown. • USE ONLY WITH Panasonic AC ADAPTOR PQLV14BXZ. • The AC adaptor must remain connected at all times. (It is normal for the adaptor to feel warm during use.) • If your unit is connected to a PBX which does not support Caller ID services, you cannot access those services.

  • Page 9: Adding Another Phone

    KX-TC1232JXB 3.1. Adding Another Phone This unit will not function during a power failure. To connect a standard telephone on the same line, use the Panasonic T- adaptor.

  • Page 10: Operations

    KX-TC1232JXB 4 OPERATIONS 4.1. Displays Both the handset and the base unit show you information and instructions on their displays. These display prompts are shown below. Handset display...
  • Page 11 KX-TC1232JXB...
  • Page 12 KX-TC1232JXB Base unit display...

  • Page 13: Making Calls

    KX-TC1232JXB 4.2. Making Calls With the Handset...
  • Page 14 KX-TC1232JXB...
  • Page 15 KX-TC1232JXB With the Base Unit (Digital Duplex Speakerphone)
  • Page 16 KX-TC1232JXB...

  • Page 17: Answering Calls

    KX-TC1232JXB 4.3. Answering Calls With the Handset With the Base Unit (Digital Duplex Speakerphone)

  • Page 18: Automatic Answering Operation

    KX-TC1232JXB 4.4. Automatic Answering Operation When the unit answers a call, a greeting message is played and the caller´s message is recorded. Setting the Unit to Answer Calls...

  • Page 19: Listening To Messages

    KX-TC1232JXB 4.5. Listening to Messages You can see the total number of recorded messages on the base unit display. If the ANSWER ON indicator flashes, new messages have been recorded. During playback...
  • Page 20 KX-TC1232JXB From the Handset If someone else is in the room and you want to listen to the recorded messages privately, you can use the handset.

  • Page 21: Flash Button

    KX-TC1232JXB 4.6. Flash Button...

  • Page 22: Disassembly Instrucutions

    KX-TC1232JXB 5 DISASSEMBLY INSTRUCUTIONS Show in Fig. Procedure To remove. Remove. Lower Cabinet Screws (2.6 × 12)....... (A) × 5 1, 2 Antenna Screws (3 × 14)....... (B) × 1 Main P.C. Board Main P.C. Board.
  • Page 23 KX-TC1232JXB Show in Fig. Procedure To remove. Remove. Rear Cabinet Battery compartment cover. 3, 4 Screws (2.6 × 12)......(C) × 2 3, 4, 5 Main P. C. Board Screw (2.6 × 12)......(D) × 1 Screws (2.6 × 12)......(E) × 2 Tape and solder.

  • Page 24: Assembly Instruction

    KX-TC1232JXB 6 ASSEMBLY INSTRUCTION...

  • Page 25: Troubleshooting Guide

    KX-TC1232JXB 7 TROUBLESHOOTING GUIDE Cross Reference: Check Power (P.26). Error Message Table (P.27). Check Record (P.28). Check Playback (P.29). Check Sp-phone Transmission (P.29). Check Sp-phone Reception (P.30). Check Battery Charge (P.31). Check Link (P.32). Check Handset Transmission (P.34). Check Handset Reception (P.34). Check Call ID (P.34).

  • Page 26: Check Power

    KX-TC1232JXB 7.1. Check Power Cross Reference NOTE: Reset Circuit (P.50). DSP is IC301. Power Supply Circuit (P.49). Cross Reference NOTE: Charge Circuit (P.51). DSP is IC601.

  • Page 27: Error Message Table

    KX-TC1232JXB 7.2. Error Message Table NOTE: Flash Memory is IC304. DSP (CPU) is IC301.

  • Page 28: Check Record

    KX-TC1232JXB 7.3. Check Record Cross Reference: NOTE: Telephone Line Interface (P.52). Flash Memory is IC304. Signal Route (P.56). DSP is IC301.

  • Page 29: Check Playback

    KX-TC1232JXB 7.4. Check Playback Cross Reference: NOTE: Power Supply Circuit (P.49). Flash Memory is IC304. DSP is IC301. 7.5. Check Sp-phone Transmission Crossn Reference: NOTE: Telephone Line Interface (P.52). Flash Memory is IC304. Signal Route (P.56). DSP is IC301.

  • Page 30: Check Sp-Phone Reception

    KX-TC1232JXB 7.6. Check Sp-phone Reception Cross Reference: NOTE: Telephone Line Interface (P.52). Flash Memory is IC304. Signal Route (P.56). DSP is IC301.

  • Page 31: Check Battery Charge

    KX-TC1232JXB 7.7. Check Battery Charge Cross Reference: NOTE: Charge Circuit (P.51). DSP is IC301. Power Supply Circuit (P.49). Cross Reference: NOTE: Reset Circuit/Charge Circuit (P.58). DSP is IC601.

  • Page 32: Check Link

    KX-TC1232JXB 7.8. Check Link...
  • Page 33 KX-TC1232JXB...

  • Page 34: Check Handset Transmission

    KX-TC1232JXB 7.9. Check Handset Transmission Cross Reference: Signal Route (P.56). 7.10. Check Handset Reception Cross Reference: HOW TO CHECK THE HANDSET SPEAKER (P.42). Signal Route (P.56) 7.11. Check Call ID Cross Reference: Telephone Line Interface (P.52). Calling Line Identification Circuit (Caller ID) (P.54). NOTE: •...

  • Page 35: Bell Reception

    KX-TC1232JXB 7.12. Bell Reception Cross Reference: NOTE: Telephone Line Interface (P.52). DSP is IC301. Check Link (P.32) Cross Reference: Check Link (P.32)

  • Page 36: Adjustments (Base Unit)

    KX-TC1232JXB 8 ADJUSTMENTS (BASE UNIT) If your unit have below symptoms, adjust or confirm each item using remedy column from the table. Symptom Remedy The base unit dose not respond to a call from handset. Make adjustments in item (A) The base unit dose not transmit or the transmit frequency is off.

  • Page 37: How To Set The Test Mode

    KX-TC1232JXB 8.2. How to Set the Test Mode Remove the antenna lead wire from P.C.Board of the base unit. CH10 Test mode 8.3. Adjustment Replace Adjustment Items Test Mode Adjustment Point Procedure Parts • Adjust T401 so that the reading of the Digital Voltmeter is 1.7V ± 0.1V. IC401, (A) RX VCO CH10 Talk...

  • Page 38: Adjustment Standard (Base Unit)

    8.4. Adjustment Standard (Base Unit) TX Power Spectrum FM Deviation Analyzer (D) Meter (G) SP-OUT Rx Sense. TX Freq Frequency DC12V AF Volt Meter AF_OSC 2 RF Volt Counter (C) RFTX TXGND Meter (E) RFRX RF_S.S.G. IFGND IFOUT 8Ω RXGND 49.97MHz TXVCO TXGND...

  • Page 39: Adjustments (Handset)

    KX-TC1232JXB 9 ADJUSTMENTS (HANDSET) If your unit have below symptoms, adjust or confirm each item using remedy column from the table. Symptom Remedy The movement of Battery Low Indicator is wrong. Make confirmation in item (A) The base unit does not respond to a call from handset. Make adjustment in item (B) The base unit does not transmit or the transmit frequency is off.

  • Page 40: How To Set The Test Mode

    KX-TC1232JXB 9.2. How to set the test mode CH10 Test Mode * Refer to CIRCUIT BOARD (HANDSET) (P.85). R608: 0Ω resistor 9.3. Adjustment Replace Adjustment Items Test Mode Adjustment Point Procedure Parts IC801 (A) Battery Low CH10 Talk 1. Set the power supply voltage to DC3.60V, and confirm so that the reading Confirmation of oscilloscope is High.

  • Page 41: Adjustment Standard (Handset)

    9.4. Adjustment Standard (Handset) SP LEVEL FM Deviation MIC-INPUT Meter (I), (J) Oscilloscope (H) RF_S.S.G. TX Power 44.2 MHz Spectrum Generator Analyzer (E) RXGND RFRX AF Volt Meter TX Freq Frequency Counter (D) 47µF 150Ω TX POWER TXGND Dummy Battery RXGND RXVCO TXGND...

  • Page 42: Rf Specification

    KX-TC1232JXB 10 RF SPECIFICATION 10.1. Base Unit Item Value Refer to -. Remarks TX Frequency 44.200 MHz ± 0.7kHz ADJUSTMENTS (BASE UNIT) (C) at CH10 TX Power More than 10dBm (CH10) ADJUSTMENTS (BASE UNIT) (D) at CH10 Line Modulation factor 2.9 kHz~3.3 kHz ADJUSTMENTS (BASE UNIT) (G) Line Modulation factor (Max.)

  • Page 43: Frequency Table (Mhz)

    KX-TC1232JXB 12 FREQUENCY TABLE (MHz) BASE UNIT HANDSET Channel Transmit Frequency Receive Frequency Transmit Frequency Receive Frequency 43.720 49.670 49.670 43.720 43.740 49.845 49.845 43.740 43.820 49.860 49.860 43.820 43.840 49.770 49.770 43.840 43.920 49.875 49.875 43.920 43.960 49.830 49.830 43.960 44.120 49.890...

  • Page 44: Explanation Of Cpu Data Communication

    KX-TC1232JXB 13 EXPLANATION OF CPU DATA COMMUNICATION 13.1. STAND-BY -> TALK, TALK -> STAND-BY Note: Channel = 1 ~ 10...

  • Page 45: Ringing

    KX-TC1232JXB 13.2. Ringing...

  • Page 46: Changing The Channel

    KX-TC1232JXB 13.3. Changing the channel...

  • Page 47: Ports For Transmitting And Receiving Of Data

    KX-TC1232JXB 13.4. Ports for transmitting and receiving of data Handset: Base Unit: transmitting (TX)... 33 Pin transmitting (TX)... 97 Pin receiving (RX)... 27 Pin receiving (RX)... 59 Pin 13.5. Waveform of DATA used for cordless transmission and reception The DATA which is transmitted from the Handset to the Base Unit is combination of DATA 0, DATA 1, DATA Delimit. The DATA which is transmitted from the Base Unit to the Handset is combination of DATA 0, DATA 1, DATA Delimit.

  • Page 48: Block Diagram (Base Unit)

    14 BLOCK DIAGRAM (BASE UNIT) ANTENNA RF FILTER CF401, CF402 Telephone Line Interface 10.7MHz 455kHz TEL LINE AMP TEL LINE SW DIODE BRIDGE TEL LINE RX_DUP Q110 Q103, Q104 D103 DUP401 RF IC IC401 RX VCO PLL -DATA X401 -CLK T401 Q112 DC IN...

  • Page 49: Circuit Operation

    KX-TC1232JXB 15 CIRCUIT OPERATION 15.1. Outline Base unit consists of the following ICs as shown in BLOCK DIAGRAM. • CPU:IC301 − Controlling the whole system − Caller ID analyzing circuit (FSK, DTMF) − Flash memory control for Digital TAM memory −...

  • Page 50: Reset Circuit

    KX-TC1232JXB 15.3. Reset Circuit After power supply from AC adaptor, the VDD (5.6V) is input to Reset IC for making reset signal. Refer to the below waveform. <Fig. 101> <Fig. 102>...

  • Page 51: Charge Circuit

    KX-TC1232JXB 15.4. Charge Circuit Circuit Operation: When charging the handset on the base unit, the charge current is as follows; DC+(12V) → REG201 → CHG (Base) → [CHG1 (Handset) → D701 → BAT1..Battery..BAT2 (GND) → R705 → D708 → CHG2 (Handset)] → CHG2 (Base) → L202 → R204 → DC-(GND), In this way, the CPU on both unit detects the fact that the battery is charged.

  • Page 52: Telephone Line Interface

    KX-TC1232JXB 15.5. Telephone Line Interface Function: • Bell signal detection • ON/OFF hook and pulse dial circuit • Side tone circuit • Auto-disconnect circuit/Parallel connection detection circuit Bell signal detection and OFF HOOK circuit: In the idle mode, Q103 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 53: Transmitter/Receive Circuit

    KX-TC1232JXB 15.6. Transmitter/Receive Circuit Base Unit and Handset are mainly consists of RF IC and CPU. Base Unit and Handset transmit/receive voice signal and data signal through the antenna on carrier frequency. 15.6.1. Transmitter Circuit Circuit Operation: The voice signal input from the TEL LINE interface goes to RF IC through CPU (CDL-OUT) to VOL402. And the signal goes through the compressor and SPLATTER FILTER of RF IC, it is output to transmitter circuit.

  • Page 54: Calling Line Identification Circuit (Caller Id)

    KX-TC1232JXB 15.8. Calling Line Identification Circuit (Caller ID) Function: 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 55: Cpu Operation

    KX-TC1232JXB 15.9. CPU Operation It goes into each operation mode because CPU controls the following ports. <Fig. 108> Moreover, it becomes the following charts by pushing the “TALK” button of Handset. <Fig. 109>...

  • Page 56: Signal Route

    KX-TC1232JXB 15.10. Signal Route Each signal route is as follows.

  • Page 57: Block Diagram (Handset)

    16 BLOCK DIAGRAM (HANDSET) RF FILTER Base ANTENNA CF801, CF802 RX_DUP MIX 1/2 SPEAKER DUP801 RF IC IC801 RX VCO PLL -DATA T801 -CLK X801 DC 3.9V PW SW PW SW BATTERY Q902 3.9V Q901 DIODE BRIDGE TX VCO TX_DUP RF AMP T901 VD901 D701, D702...

  • Page 58: Circuit Operation (Handset)

    KX-TC1232JXB 17 CIRCUIT OPERATION (HANDSET) 17.1. Outline Handset consist of the following ICs as shown in BLOCK DIAGRAM. • CPU: IC601 − All data signals (forming/analyzing ACK or CMD signal*) − All interfaces (ex; LED, Key, Buzzer, Detector Circuit, Charge, Battery Low) •...

  • Page 59: Battery Low Detector Circuit

    KX-TC1232JXB 17.3. Battery Low Detector Circuit Circuit Operation: When the battery voltage goes down less than 3.57 V, this level is detected by the inside of RF IC (SIG-IN). The CPU detects this level and “ : Recharge battery” starts flashing. The RF IC check the level of the battery, if this level is less than 3.3 V, the output of RF IC (P-DOWN) becomes low level, then CPU stops working to keep memory.

  • Page 60: Cpu (Dsp) Data (Base Unit)

    KX-TC1232JXB 18 CPU (DSP) DATA (BASE UNIT) 18.1. IC301...

  • Page 61: Cpu (Dsp) Data (Handset)

    KX-TC1232JXB 19 CPU (DSP) DATA (HANDSET) 19.1. IC601...

  • Page 62: Explanation Of Ic Terminals

    KX-TC1232JXB 20 EXPLANATION OF IC TERMINALS 20.1. Handset: IC801...

  • Page 63: Cabinet And Electrical Parts Location (Base Unit)

    KX-TC1232JXB 21 CABINET AND ELECTRICAL PARTS LOCATION (BASE UNIT)

  • Page 64: Cabinet And Electrical Parts Location (Handset)

    KX-TC1232JXB 22 CABINET AND ELECTRICAL PARTS LOCATION (HANDSET)

  • Page 65: Accessories And Packing Materials

    KX-TC1232JXB 23 ACCESSORIES AND PACKING MATERIALS...

  • Page 66: Terminal Guide Of Ic's, Transistors And Diodes

    KX-TC1232JXB 24 TERMINAL GUIDE OF IC’S, TRANSISTORS AND DIODES 24.1. Base Unit 24.2. Handset...

  • Page 67: Replacement Parts List

    KX-TC1232JXB 25 REPLACEMENT PARTS Ref. Part No. Part Name & Description Remarks PQKM10501Z1 UPPER CABINET LIST PQQT22258Y TAM LABEL PQSA10092Y ANTENNA This replacement parts list is KX-TC1232JXB only. PQSX10183Z RUBBER SWITCH, 20KEY PQSX10184Z RUBBER SWITCH, TAM KEY 1. RTL (Retention Time Limited) PQUS10285Z HOOK SPRING Note:...
  • Page 68 KX-TC1232JXB Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks L306 PQLQR1RS102 COIL R145 ERJ3GEYJ222 2.2k L307 PQLQR1RS102 COIL R201 ERDS2TJ271 L308 PQLQR1RS102 COIL R202 ERJ3GEYJ334 330k L309 PQLQR1RS102 COIL R203 ERJ3GEYJ104 100k L311 PQLQR2KA213 COIL...
  • Page 69 KX-TC1232JXB Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R506 ERJ3GEYJ102 C330 ECUV1H101JCV 100P R507 ERJ3GEYJ101 C331 ECUV1H101JCV 100P R508 ERJ3GEYJ101 C332 ECUV1H101JCV 100P R509 ERJ3GEYJ222 2.2k C333 ECUV1H101JCV 100P R511 ERJ3GEYJ153 C334 ECUV1H101JCV 100P...

  • Page 70: Handset

    KX-TC1232JXB Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C518 ECUV1H103KBV 0.01 LED602 PQVDSML310MT C519 ECUV1H103KBV 0.01 LED603 PQVDSML310MT C520 ECUV1H103KBV 0.01 LED604 PQVDSML310MT C522 ECUV1E104ZFV LED605 PQVDSML310MT LED606 PQVDSML310MT LED607 PQVDSML310MT 25.2.

  • Page 71: Accessories And Packing Materials

    KX-TC1232JXB Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R823 ERJ3GEYJ822 8.2k C824 ECUV1H152KBV 0.0015 R824 ERJ3GEYJ102 C825 ECUV1H151JCV 150P R825 ERJ3GEYJ103 C827 ECUV1C104KBV R827 ERJ3GEYJ220 C828 ECUV1H390GCV R828 ERJ3GEY0R00 C829 ECUV1H270GCV R830 ERJ3GEYJ331 C830...

  • Page 72: For Schematic Diagram

    KX-TC1232JXB 26 FOR SCHEMATIC DIAGRAM 26.1. Base Unit (SCHEMATIC DIAGRAM (BASE UNIT)) 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. Important Safety Notice: Components identified by mark have special characteristics important for safety.

  • Page 73: Voltage Check

    KX-TC1232JXB 27 VOLTAGE CHECK 27.1. Base unit STBY TALK IC301-63 IC301-64 STBY TALK IC301-65 IC301-1 IC301-66 IC301-2 IC301-67 IC301-3 IC301-68 IC301-4 IC301-69 IC301-5 IC301-70 IC301-6 IC301-71 IC301-7 IC301-72 IC301-8 IC301-73 IC301-9 IC301-74 IC301-10 IC301-75 IC301-11 IC301-76 IC301-12 IC301-77 IC301-13 IC301-78 IC301-14 IC301-79 IC301-15...
  • Page 74 KX-TC1232JXB STBY TALK STBY TALK IC304-16 IC401-39 IC304-17 IC401-40 IC304-18 IC401-41 IC304-19 IC401-42 IC304-20 IC401-43 IC304-21 IC401-44 IC304-22 IC401-45 IC304-23 IC401-46 IC304-24 IC401-47 IC304-25 IC401-48 IC304-26 IC401-49 IC304-27 IC401-50 IC304-28 IC401-51 IC304-29 IC401-52 IC304-30 IC401-53 IC304-31 IC401-54 IC304-32 IC401-55 IC304-33 IC401-56 IC304-34 IC501-1...

  • Page 75: Handset

    KX-TC1232JXB 27.2. Handset STBY TALK Q201-1 Q201-2 STBY TALK Q201-3 IC601-1 Q202-1 IC601-2 Q202-2 IC601-3 Q202-3 IC601-4 Q203-1 IC601-5 Q203-2 IC601-6 Q203-3 IC601-7 Q204-1 IC601-8 Q204-2 IC601-9 Q204-3 IC601-10 Q301-1 IC601-11 Q301-2 IC601-12 Q301-3 IC601-13 Q302-1 IC601-14 Q302-2 IC601-15 Q302-3 IC601-16 Q303-1 IC601-17...
  • Page 76 KX-TC1232JXB STBY TALK STBY TALK IC801-2 Q602-3 IC801-3 Q701-1 IC801-4 Q701-2 -0.2 IC801-5 Q701-3 -0.3 IC801-6 Q702-1 IC801-7 Q702-2 IC801-8 Q702-3 IC801-9 Q703-1 IC801-10 Q703-2 IC801-11 Q703-3 IC801-12 Q704-1 IC801-13 Q704-2 IC801-14 Q704-3 IC801-15 Q705-1 IC801-16 Q705-2 IC801-17 Q705-3 IC801-18 Q706-1 IC801-19 Q706-2...

  • Page 77: Memo

    KX-TC1232JXB 27.3. MEMO...

  • Page 78: Schematic Diagram (Base Unit)

    KX-TC1232JXB 28 SCHEMATIC DIAGRAM (BASE UNIT) 10.7MHz RXRF=-41.1dBm RXRF=-36.4dBm 49.97MHz RX RF=-21.3dBm RXRF=-22.6dBm 60dBuVemf 1kHz/3kHz MOD 49.97MHz RXRF=-48.1dBm RXRF=-46.6dBm TXRF=-11.8dBm 44.2MHz 1kHz RXAF=-16.8dBm RXAF=-18.7dBm TXRF=-17.7dBm RXAF=-17.1dBm TXRF=7.2dBm RXAF=-21.7dBm TXRF=-2.1dBm TXAF=-14.3dBm 1kHz TXAF=-19.6dBm 1kHz TXRF=6.2dBm TXRF=-11.9dBm TXRF=-19.7dBm TX DATA 500Hz/1kHz 4.6V...
  • Page 79 KX-TC1232JXB TALK LOAF=-5.3dBm TALK LOAF=-6.4dBm 1kHz SP-P LOAF=-22.0dBm SP-P LOAF=-23.1dBm TALK LOAF=-5.2dBm TALK LIAF=-24.8dBm TALK LIAF=-25.0dBm TALK LOAF=-6.4dBm TALK LOAF=-25.2dBm SP-P LOAF=-21.8dBm SP-P LOAF=-23.2dBm C108 SP-P LOAF=-57.7dBm TALK LOAF=-24.8dBm C103 PO101 Q107 L101 Q103 500V680P R114 R112 33uH 1KHz -25dBm RING R115 R125...

  • Page 80: Schematic Diagram (Handset)

    KX-TC1232JXB 29 SCHEMATIC DIAGRAM (HANDSET) 44.2MHz 60dBuVemf 1kHz/3kHz MOD SET SPEC(10CH) ITEM CONDITION DATA RXRF=-41.6dBm TX-VCO 1.5V 49.97MHz 10.7MHz RX-VCO 1.1V T802 RXRF=-46.2dBm ANTENA DUP802 TX-POWER 11dBm RXRF=-75.8dBm MIC-MOD -50dBm / 1KHz 2.0KHzdev RFRX DATA-MOD 5.5KHzdev SP-OUT 3KHzdev / 1KHz , 60dB -21dBm/VOL-M RXGND RXRF=-4.3dBm...
  • Page 81 KX-TC1232JXB EXIT DOWN DJ ON FUNC LEFT Q601 RIGHT PAUSE DH ON TALK FLASH TONE C601 Z1.0 Q602 TEST R608 R602 KEY-3 CHG-CONT TEST-MODE LCD_RESET NO-USE LCD-RESET LCD_POWER NO-USE LCD-POWER RA3 2.2K LCD_RS P-DOWN LCD_RS LCD_RW_WR L601 VREF LCD_WR 0.68uH LCD_E_RD D601 IC601...
  • Page 82 KX-TC1232JXB...

  • Page 83: Circuit Board (Base Unit)

    KX-TC1232JXB 30 CIRCUIT BOARD (BASE UNIT) 30.1. Component View Charge X’tal clock Bell-in IN USE-LED PW-GND CHG1 CHG2 (CPU: 19) (7.9MHz) (CPU: 64) (CPU: 65) Reset charge IC301 B C E IC401 REG201 Power LOUT Line IN Down (CPU:36) (CPU:38) (OVER 12V) (~5.5V)

  • Page 84: Flow Solder Side View

    KX-TC1232JXB 30.2. Flow Solder Side View Tx VCO MIC1 Rx VCO...

  • Page 85: Circuit Board (Handset)

    KX-TC1232JXB 31 CIRCUIT BOARD (HANDSET) 31.1. Component View R608 for test mode T801 (for RX-VCO) Charge-DTC (CPU: 30) Batt+ (3.5V~) IC602 IC601 IC801 IC901 T901 (for TX-VCO) VOL802 VDD (pin 7) (for Mic Mod) 31.2. Flow Solder Side View...
  • Page 86 KX-TC1232JXB...
  • Page 87 KX-TC1232JXB KXTC1232JXB Printed in Japan...

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