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Panasonic KX-TC1035BXW Service Manual

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ORDER NO. KM40012753C3
Service Manual
Telephone Equipment
KX-TC1035BXW
Cordless Phone
White Version
(for Asia, Middle Near East and other areas)
1
2005-05-13

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Summary of Contents for Panasonic KX-TC1035BXW

  • Page 1 ORDER NO. KM40012753C3 Service Manual Telephone Equipment KX-TC1035BXW Cordless Phone White Version (for Asia, Middle Near East and other areas) 2005-05-13...
  • Page 2 SPECIFICATIONS 2005-05-13...

  • Page 3: Standard Battery Life

    1. STANDARD BATTERY LIFE If your Panasonic battery is fully charged; While in use (TALK) Up to about 6 hours While not in use (Stand-by) Up to about 30 days Battery life may vary depending on usage conditions and ambient temperature.
  • Page 4 2005-05-13...
  • Page 5 3. CONNECTION 1. Connect as shown. 2005-05-13...
  • Page 6 - USE ONLY WITH Panasonic ACADAPTOR PQLV1BXZ. - The AC adaptor must remain connected at all times. (It is normal for the adaptor to feel warm during use.) - When more than one unit is used, the units may interfere with each other.

  • Page 7: Adding Another Phone

    3.1. Adding Another Phone This unit will not function during a power failue. To connect a standard telephone on the same line, use a T-adaptor. 4. DISASSEMBLY INSTRUCUTIONS 2005-05-13...
  • Page 8 Ref. No. Procedure Shown in Fig To remove -. Remove -. Lower Cabinet Screws (3 × 14)....... (A) × 5 1, 2 Main Printed Circuit Board Screws (3 × 14)....... (B) × 1 1, 2, 3 Charge Terminal Screws (3 × 10)....... (C) × 2 Rear Cabinet Remove the battery compartment cover 4, 5...

  • Page 9: How To Replace Flat Package Ic

    5. HOW TO REPLACE FLAT PACKAGE IC 5.1. Preparation SOLDER Sparkle Solder 115A-1, 115B-1 or Almit Solder KR-19,KR-19RMA Soldering iron Recommended power consumption will be between 30 W to 40 W. Temperature of Copper Rod 662 ± 50°F (350 ± 10°C) (An expert may handle between 60 W to 40 W iron, but beginner might damage foil by overheating.) Flux...

  • Page 10: Modification Procedure Of Bridge

    3. Solder employing specified solder to direction of arrow, as sliding the soldering iron. 5.3. Modification Procedure of Bridge 1. Re-solder slightly on bridged portion. 2. Remove remained solder along pins employing soldering iron as shown in 2005-05-13...

  • Page 11: Cpu Data (Base Unit)

    below figure. 6. CPU DATA (BASE UNIT) 6.1. IC201 2005-05-13...
  • Page 12 2005-05-13...

  • Page 13: Cpudata (Handset)

    7. CPUDATA (HANDSET) 7.1. IC901 2005-05-13...
  • Page 14 2005-05-13...

  • Page 15: Explanation Of Ic Terminals

    8. EXPLANATION OF IC TERMINALS 8.1. Base Unit: IC801 2005-05-13...
  • Page 16 2005-05-13...
  • Page 17 2005-05-13...
  • Page 18 8.2. HANDSET: IC101 2005-05-13...
  • Page 19 2005-05-13...
  • Page 20 2005-05-13...

  • Page 21: Explanation Of Cpu Data Communication

    9. EXPLANATION OF CPU DATA COMMUNICATION 9.1. Outgoing Call Mode (STANDBY TALK): 2005-05-13...
  • Page 22 9.2. CH Change Mode: 2005-05-13...
  • Page 23 2005-05-13...
  • Page 24 9.3. To Terminate Communication 9.4. Ringing 2005-05-13...

  • Page 25: Ports For Transmitting And Receiving Of Data

    After detecting the Ring signal from circuit, Base Unit sends a ring signal DATA (Ring) on the base's (a) TX frequency, then the Handset starts ringing. Note: (a) is channels 1-10 (old)...cthese channels are paired. 9.5. Ports for Transmitting and Receiving of Data Handset: transmitting...
  • Page 26 9.6.2. Base Unit 9.7. When LINKing 2005-05-13...

  • Page 27: Pulse Dial

    When LINKing from the Handset (when becoming STBY to TALK), DATA is transmitted in above format. The combined portion of DATA 0 and DATA 1 is transmitted in LINK requesting DATA (40 bit) format first.Then,when LINK OK(ACK-OK) DATA(46bit) is returned from the Base Unit, it is sent as LINK form DATA after changing the combination of DATA 0 and DATA 1.

  • Page 28: Terminal Guide Of Ic's, Transistors And Diodes

    KX-TC1035BXW. Each time the handset is on the cradle of the base unit (for charging), the CPU automatically change the security code. 10. TERMINAL GUIDE OF IC'S, TRANSISTORS AND DIODES 10.1.

  • Page 29: Flash Button

    11. CPU OPTION 11.1. Base Unit FLASH 700 msec. 100 msec. 600 msec. 250 msec. 300 msec. 400 msec. 110 msec. 90 msec. TIME D906 D907 D908 D906—D908 are used for default setting. When you change the flash time, do the following procedure. In case the program should be set frequency, change the default at D906—D908, then set the program.
  • Page 30 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. Make adjustments in item (B) The transmit frequency is off. Make confirmation in item (C) The transmit power output is low, and the operating distance between Make adjustments in item (D)

  • Page 31: Adjustments (Handset)

    The connection of adjustment equipments are as shown in Flow Solder Side View (Base Unit). 13. ADJUSTMENTS (HANDSET) If your unit have below symptoms, adjust 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.
  • Page 32 Unit condition: 1. Remove the antenna lead wire from P.C Board of handset. 2. Power Supply: DC 3.9V 3. Volume: HIGH (When P.C. Board of handset is in test mode, volume condition is medium.Press "LOUD" key once.) 4. Speaker Load: 150 TX Frequency RX Frequency CH10...

  • Page 33: Frequency Table (Mhz)

    The connections of adjustment equipment are as shown in Flow Solder Side View (Handset). 14. FREQUENCY TABLE (MHz) 2005-05-13...
  • Page 34 15. RF SPECIFICATION 15.1. Base Unit 15.2. Handset 2005-05-13...

  • Page 35: How To Check The Handset Speaker

    16. HOW TO CHECK THE HANDSET SPEAKER 1. Prepare the digital voltmeter, and set the selector knob to ohm meter. 2. Put the probes at the speaker terminals as shown in Fig.7 2005-05-13...

  • Page 36: Block Diagram (Base Unit)

    17. BLOCK DIAGRAM (BASE UNIT) 2005-05-13...

  • Page 37: Transmitter Circuit

    18. NEW CIRCUIT OPERATION (BASE UNIT) 18.1. Transmitter Circuit The voice signal or the data signal sent to the handset is applied in the anode of the variable capacitor diode (VARICAP) D851. VR851 is used for changing the voice signal level, thus changing the modulation level. 18.2.
  • Page 38 signal. The unit is consequently in an ON-HOOK condition. 19.1.3. Specifications In the ON-HOOK state (idle), the telephone line current flows as follows: T L101 R101 C101 Q101 B Q101 E C102 R102 L102 R. The 48V DC component is blocked by C101, C102, thereby providing an ON- HOOK condition.
  • Page 39 19.3. Transmitter Signal Circuit 19.3.1. Circuit Operation: 1. The signal input from the TEL LINE goes through C301 R301 IC301(25) IC301(24) IC301(23) IC301(22) and it is input to the signal amplifier of IC801, pin 9. This amplifier is included in a limiter circuit.Signal goes through the compressor and SPLATTER FILTER, it is output in the pin 3 of IC801.
  • Page 40 19.4. Receiver RF IF Circuit 19.4.1. Circuit Operation: The signal of 49 MHz band (49.670~49.99MHz) which is input from ANT is filtered at DUP801, passes through the filter AMP of 49 MHz band input to Pin 41 of IC801.RX VCO which oscillates at L801 and Pins 44, 45 of IC801 is input to program control at inside of IC801, 1st local frequency is controlled to assigned channel by serial data which is output from Pins 8, 49 and 50 of IC201 (CPU), makes loop with Phase Detector Out and RX VCO, and locks 1st local...
  • Page 41 19.5. Receiver Signal Circuit 19.5.1. Circuit Operation: 1. The detected signal passes through R806 C815 R807 and it is input to the Pre Amplifier inside of IC801; it passes through the expander and goes out from pin 21 of IC801. 2.
  • Page 42 19.6. Initialization Circuit 19.6.1. Function: This circuit is used for initializing the CPU when the AC adaptor is connected. 19.6.2. Circuit Operation: When the unit is switched ON, then the voltage is regulated to 5.5V in IC301 and power is supplied to the CPU. 2005-05-13...
  • Page 43 19.7. Charge Detect Circuit 19.7.1. Circuit Operation: Change Mode When charging the handset on the base unit, CH. ID CODES are sent from the CONT terminal to the handset, and charging current is supplied to the handset from the battery charge contacts via R352, R354, R355 on base unit: When - contact on base unit is input to Pin 48 of IC201 (CPU) through Q353.

  • Page 44: Power Supply Circuit

    24 of IC901 becomes Low, In this way the CPU on handset detects the fact that the battery is charged. Set up of the handset When charging the handset on the base unit, the data signal is sent from CONT terminal to handset.

  • Page 45: Cpu Operation

    Power from the AC adaptor is supplied directly to the charge circuit its voltage. Its voltage is regulated in IC801. The voltage at point B is regulated to 5.5 V. The 5.5 V voltage is dropped by D801 to 5.0 V. 19.9.
  • Page 46 Make/break ratio when dialing with the Handset: 40%: 60% High/low ratio upon ring signal: 50%: 50% Therefore, if the low/high ratio is greater than 45% at IC201- 1 (CPU), it is judged as a ring signal. In area where the transmission power from the handset is extremely weak, noise is superimposed on the data and the chance of an error can become extremely 2005-05-13...

  • Page 47: Block Diagram (Handset)

    great upon reception of the data. To help prevent this, the above circuit is used. 20. BLOCK DIAGRAM (HANDSET) 21. NEW CIRCUIT OPERATION (HANDSET) 21.1. Receiver RF IF Circuit 21.1.1. Circuit Operation: The signal of 46 MHz band (43.72 MHz~44.20 MHz) which is input from ANT is filtered by DUP101, and is input to Pin 42 of IC101.
  • Page 48 21.2. Receiver Signal Circuit 21.2.1. Circuit Operation: After getting the 455kHz signal, it is input to Pin 33 of IC101 and passes through IF AMP and Detector Circuit, then are output to Pin 26. AF signal flows through R123, C124. Its level is controlled by the VOLUME CONTROL Amp of IC101.The signal is received at Pin 25 of IC101, then it passes through the following circuits: PREAMP, Expander and Amplifier: It goes out at Pin 16 and finally is sent to the SP.Inside IC101, RX-MUTE, MIC-MUTE and PLL circuits are controlled by the...
  • Page 49 21.3. Transmitter Signal Circuit 21.3.1. Circuit Operation: Input signal from MIC passes through the filters arranged by C202, VR201, R201 and C203, R203 and it is input to the Pin 9 of IC101. Inside it, the signal passes through the MIC AMP and Compressor circuits and SPLATTER FILTER is output to Pin 3.
  • Page 50 21.4. Receiver Data Circuit 21.4.1. Circuit Operation: Only the data received are passed through the low pass filter formed by R216 and C129 to be input at pin 22 of IC101, where its wave form is adjusted. The 2005-05-13...
  • Page 51 resulting signal is output from Pin 13 and sent to CPU directly. 21.5. Battery Low Detector Circuit 21.5.1. Circuit Operation: When the battery voltage goes down less than 3.45 V. this level is detected by the inside of IC101, so its output is sent to Pin 26 of IC901. The CPU detects this level by its Pin 26 and battery low indicator lights starts flashing.
  • Page 52 22. NORMAL CIRCUIT OPERATION (HANDSET) 22.1. CPU Operation 22.2. Reset Circuit Power ON/OFF Circuit 22.2.1. Reset Circuit When the handset is charged, the impulse is sent through C905, Q910 generates the reset signal and it is sent to Pin 20 of CPU. 2005-05-13...
  • Page 53 2005-05-13...

  • Page 54: Troubleshooting Guide

    23. TROUBLESHOOTING GUIDE 24. TROUBLESHOOTING GUIDE (BASE UNIT) Base Unit Condition: 1. Set the dialing mode selector to "Tone". When checking the base unit only Check the base unit as shown by following below flow chart. 2005-05-13...
  • Page 55 2005-05-13...
  • Page 56 24.1. Troubleshooting Step 1: The base unit does not flash In Use/Charge indicator. 2005-05-13...
  • Page 57 24.2. Troubleshooting Step 2: The charge indicator does not light. 24.3. Troubleshooting Step 3: 1. The INUSE/CHARGE indicator does not flash. 2. The beep is not heard from the handset. 2005-05-13...
  • Page 58 25. TROUBLESHOOTING GUIDE (HANDSET) Use the right base unit for this troubleshooting.Charge the battery of the handset on the base unit. Base unit condition: 1. Connect the AC Adaptor (PQLV1BXZ) plug into DC IN jack and the another end into a power outlet (AC 220-240 V, 50/60Hz). 2.

  • Page 59: Cabinet And Electrical Parts Location

    25.3. Troubleshooting Step 3: The TALK indicator does not flash (Check the data reception). Check Point Check the signal of receiver data circuit on Receiver Data Circuit. 26. CABINET AND ELECTRICAL PARTS LOCATION (BASE UNIT) 27. CABINET AND ELECTRICAL PARTS LOCATION (HANDSET) 2005-05-13...

  • Page 60: Accessories And Packing Materials

    28. ACCESSORIES AND PACKING MATERIALS 29. REPLACEMENT PARTS LIST This replacement parts list is KX-TC1035BXW only. 1. RTL (Retention Time Limited) Note: The marking (RTL) indicates that the Retention Time is limited for this item. After the discontinuation of this assembly in production, the item will continue to be available for a specific period of time.
  • Page 61 29.1. Base Unit 29.1.1. CABINET AND ELECTRICAL PARTS Ref. No. Part No. Part Name & Description Remarks PQAS57P03Z SPEAKER PQGT14573Z NAME PLATE PQJT10151X CHARGE TERMINAL PQKE10082Z2 HANGER PQKM10360V2 UPPER CABIENT PQQT11773Z CHARGE LABEL PQQT11822Z ADAPTOR LABEL PQSA10092X ANTENNA PQSX10091W 20KEY BUTTON, RUBBER PQYF10141L2 LOWER CABINET PQHR10657Z...
  • Page 62 29.1.2. MAIN P.C.BOARD PARTS Ref. No. Part No. Part Name & Description Remarks PCB1 PQWP135BHRF MAIN P.C.BOARD ASS'Y (RTL) (ICs) IC201 MN150832BC2 IC301 PQVIBA3720FP IC351 PQVIBA78M08F IC601 PQVISC77655V (TRANSISTORS) Q101 2SD1819A TRANSISTOR (Si) Q102 2SA1625 TRANSISTOR (Si) Q103 PQVT2N6517CA TRANSISTOR (Si) Q104 2SC1740S TRANSISTOR (Si)
  • Page 63 Ref. No. Part No. Part Name & Description Remarks PQJM122Z MICROPHONE PQMG10023Z CUSHION RUBBER, MIC CN101 PQJJ2H003Z JACK CN352 PQJP03B70Z CONNECTOR X201 PQVCK3573N9Z CRYSTAL OSCILLATOR (RESISTORS) R101 ERDS2TJ155 1.5M R102 ERDS2TJ155 1.5M R103 PQ4R10XJ563 R104 PQ4R10XJ473 R105 ERDS2TJ104 100k R106 ERDS2TJ472 4.7k R108...
  • Page 64 Ref. No. Part No. Part Name & Description Remarks R303 ERJ3GEYJ823 R304 ERJ3GEYJ682 6.8k R305 ERJ3GEYJ103 R306 ERJ3GEYJ103 R307 ERJ3GEY0R00 R308 ERJ3GEYJ472 4.7k R311 ERJ3GEY0R00 R312 ERJ3GEYJ103 R314 ERJ3GEYJ104 100k R315 ERJ3GEYJ103 R316 ERJ3GEYJ823 R317 ERJ3GEYJ332 3.3k R318 ERJ3GEYJ225 2.2M R351 ERJ3GEYJ473 R352...
  • Page 65 Ref. No. Part No. Part Name & Description Remarks R620 ERJ3GEYJ471 R621 ERJ3GEYJ104 100k R622 ERJ3GEYJ104 100k R623 ERJ3GEYJ103 R624 ERJ3GEYJ103 R625 ERJ3GEYJ563 R626 ERJ3GEYJ184 180k R631 ERJ3GEYJ273 R632 ERJ3GEYJ223 R633 ERJ3GEYJ104 100k R634 ERJ3GEYJ474 470k R636 ERJ3GEYJ392 3.9k R637 ERJ3GEYJ474 470k R638...
  • Page 66 Ref. No. Part No. Part Name & Description Remarks C307 PQCUV1H472KB 0.0047 C308 PQCUV1H472KB 0.0047 C309 PQCUV1E333MD 0.033 C310 PQCUV1H103ZF 0.01 C311 ECEA1HU100 C312 ECEA1HU100 C313 ECEA1AU470 C314 PQCUV1C104KB 0.1 C315 PQCUV1E104MD 0.1 C316 ECUV1H103KBV 0.01 C351 PQCUV1C105ZF C352 PQCUV1C105ZF C353 ECEA1EK470 C354...
  • Page 67 Ref. No. Part No. Part Name & Description Remarks C632 PQCUV1H103KB 0.01 C633 PQCUV1H103KB 0.01 C634 PQCUV1H222KB 0.0022 C635 PQCUV1H562KB 0.0056 C636 PQCUV1C104KB 0.1 C801 ECKERS102MB 0.001 29.1.3. RF P.C. BOARD PARTS Ref. No. Part No. Part Name & Description Remarks PCB2 PQWP2C1035BH RF P.C.BOARD ASS'Y (RTL)
  • Page 68 Ref. No. Part No. Part Name & Description Remarks R824 ERJ3GEYJ103 R825 ERJ3GEY0R00 R851 ERJ3GEYJ103 R853 ERJ3GEYJ393 R854 ERJ3GEYJ823 R856 ERJ3GEYJ223 R857 ERJ3GEYJ104 100k R858 ERJ3GEYJ102 R859 ERJ3GEYJ220 R860 PQ4R10XJ4R7 R862 ERJ3GEYJ391 R864 ERJ3GEYJ221 R865 ERJ3GEYJ151 R881 ERJ3GEYJ220 J881 PQ4R10XJ000 J882 ERJ3GEY0R00 J884...
  • Page 69 Ref. No. Part No. Part Name & Description Remarks C840 PQCUV1C224KB 0.22 C841 ECUV1H180JCV 18P C842 ECUV1H103KBV 0.01 C843 ECUV1H103KBV 0.01 C852 ECUV1C104ZFV 0.1 C854 ECUV1C104KBV 0.1 C856 ECUV1C104ZFV 0.1 C857 ECUV1H150JCV 15P C858 ECUV1H681JCV 680P C859 ECUV1H330JCV 33P C860 ECUV1H103KBV 0.01 C861 ECUV1H103KBV 0.01...
  • Page 70 Ref. No. Part No. Part Name & Description Remarks PCB100 PQWPC1035GFR MAIN P.C.BOARD ASS'Y (RTL) (ICS) IC101 AN6265FA IC301 PQVITK14620M IC901 PQVI9046G027 (TRANSISTORS) Q501 2SD601A TRANSISTOR (Si) Q502 2SD601A TRANSISTOR (Si) Q910 PQVT143XK146 TRANSISTOR (Si) Q911 PQVTD123T146 TRANSISTOR (Si) Q912 PQVTD123T146 TRANSISTOR (Si) Q913...
  • Page 71 Ref. No. Part No. Part Name & Description Remarks VR201 EVN5ESX50B33 VARIABLE RESISTOR (RESISTORS) R101 ERJ3GEYJ220 R102 ERJ3GEY0R00 R104 ERJ3GEYJ331 R106 ERJ3GEY0R00 R120 ERJ3GEYJ223 R121 ERJ3GEYJ394 390k R122 ERJ3GEYJ392 3.9k R123 ERJ3GEYJ562 5.6k R124 ERJ3GEYJ393 R125 ERJ3GEYJ823 R126 ERJ3GEYJ103 R127 ERJ3GEY0R00 R129 ERJ3GEYJ683...
  • Page 72 Ref. No. Part No. Part Name & Description Remarks C100 PQ4R10XJ000 C301 PQ4R10XJ000 C314 ERJ3GEYJ391 J100 PQ4R10XJ000 J101 ERJ3GEY0R00 J102 PQ4R10XJ000 J103 PQ4R10XJ000 J111 ERJ3GEY0R00 J302 ERJ3GEY0R00 L101 PQ4R18XJ000 L501 PQ4R10XJ000 (CAPACITORS) C101 ECUV1H103KBV 0.01 C102 ECUV1C104ZFV C103 ECUV1H103KBV 0.01 C104 ECUV1C104ZFV C106...

  • Page 73: For Schematic Diagram

    Ref. No. Part No. Part Name & Description Remarks C221 ECUV1C104ZFV C310 PQCUV1E104MD 0.1 C311 ECUV1H103KBV 0.01 C313 ECUV1H103KBV 0.01 C317 ECUV1H103KBV 0.01 C321 ECUV1H220JCV C322 ECUV1H150JCV C323 ECUV1H681JCV 680P C325 ECUV1H220JCV C330 PQCUV1C104KB 0.1 C331 PQCUV1H103KB 0.01 C351 PQCUV1C224ZF 0.22 C352 ECUV1E223KBV...

  • Page 74: Schematic Diagram (Rf Unit)

    technology. Important Safety Notice:Components identified by mark have special characteristics important for safety. When replacing any of these components, use only the manufacture's specified parts. 30.2. Handset DC voltage measurements are taken with electronic voltmeter from negative voltage line. (Talk Position) This schematic diagram may be modified at any time with the development of new technology.

  • Page 75: Circuit Board And Wiring Connection Diagram (Handset)

    33.2. Flow Solder Side View 34. CIRCUIT BOARD AND WIRING CONNECTION DIAGRAM (HANDSET) 34.1. Component View 34.2. Flow Solder Side View 35. SCHEMATIC DIAGRAM 35.1. Base Unit 35.2. Handset KXTC1035BXW Printed in Japan 2000 Kyushu Matsushita Electric Co., Ltd. All rights reserved. 2005-05-13...

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