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Matsushita Electric KX-TCD952NLB Service Manual

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ORDER NO. KM40007643A2
Telephone Equipment
KX-TCD952NLB
Digital Cordless Phone
(for Holland)
SPECIFICATIONS
2000 Kyushu Matsushita Electric Co., Ltd. All rights reserved.
Unauthorized copying and distribution is a violation of law.
1

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  • Page 1 ORDER NO. KM40007643A2 Telephone Equipment KX-TCD952NLB Digital Cordless Phone (for Holland) SPECIFICATIONS 2000 Kyushu Matsushita Electric Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.

  • Page 2: Location Of Controls

    1. LOCATION OF CONTROLS...
  • Page 3 2. DISASSEMBLY INSTRUCUTIONS...

  • Page 4: Installing The Batteries In The Handset

    3. SETTINGS 3.1. INSTALLING THE BATTERIES IN THE HANDSET Install the batteries as shown. Then install the handset cover.
  • Page 5 - If the rechargeable batteries are not inserted correctly, the handset will not work. 3.2. CONNECTION Plug in the AC adaptor cord and the telephone line cord to the bottom of the unit. Then connect the cords as shown. - USE ONLY WITH Panasonic AC ADAPTOR KX-TCA11CE. - Be careful not to confuse the telephone line jack with the AC adaptor jack on the base unit.

  • Page 6: Battery Charge

    - The AC adaptor must remain connected at all times. (It is normal for the adaptor to feel warm during use.) - The unit will not work during a power failure. We recommend you connect a standard telephone on the same line for power protection.

  • Page 7: Installing The Handset Clip

    3.4. INSTALLING THE HANDSET CLIP You can hang the handset on your belt or pocket using the belt clip. 4. OPERATIONS 4.1. MAKING CALLS 4.1.1. TURNING THE POWER ON 4.1.2. TO DIAL AFTER CONFIRMING THE ENTERED NUMBER...

  • Page 8: Answering Calls

    4.1.3. TO REDIAL THE LAST NUMBER DIALLED 4.1.4. TO REDIAL AFTER CONFIRMING THE NUMBERS IN REDIAL MEMORY 4.2. ANSWERING CALLS 4.3. SETTING THE RECEIVER VOLUME...
  • Page 9 4.4. SELECTING THE HANDSET RINGER VOLUME 4.5. SELECTING THE BASE UNIT RINGER VOLUME...
  • Page 10 5. HOW TO REPLACE THE RF UNIT OF HANDSET When replacing the P.C. Board No. PQUP10927ZB and PQUP10927YA, the hotmelt removing and putting operation is required. 1. Cool the P.C. Board in the freezer for 10 minutes, then remove the hotmelt of the hatched parts in Fig.
  • Page 11 6. BLOCK DIAGRAM RF UNIT (BASE UNIT)
  • Page 12 7. BLOCK DIAGRAM BASEBAND SECTION AND LINE INTERFACE (BASE UNIT)

  • Page 13: Circuit Operation (Base Unit)

    8. CIRCUIT OPERATION (BASE UNIT) 8.1. R.F. SECTION (SEE BLOCK DIAGRAM Fig. 17) 8.2. THE BASE-BAND SECTION (SEE BLOCK DIAGRAM Fig. 18) 8.2.1. INTRODUCTION...
  • Page 14 The base-band section consists of a base-band integrated circuit (BBIC), a Flash PROM, an EEPROM, and an AND Gate. 8.2.2. THE BASE-BAND INTEGRATED CIRCUIT (BBIC) The PQVINSC14424 (IC101) is a CMOS device designed to handle all the audio, signal and data processing needed in a DECT base unit.
  • Page 15 8.2.6. LOCATOR KEY (SEE Fig. 19) The keyboard “Locator (Page)” button is connected to pin 68 (TP154) of the IC101. When pressed the base transmits a message to the handset, which then beeps. 8.2.7. FACTORY SERIAL PORT (SEE Fig. 19) In order to communicate with the handset during manufacture and servicing (using a PC) a serial data link has been provided.
  • Page 16 ground is provided on J103. The bi-directional serial data line is split into two at IC101 pin 27 (input) and pin 26 (output). Data rate is 9600 baud J103. D105provides ESD protection, and R117 and C146 provide RF de-coupling. 8.2.8. BUZZER CIRCUIT (SEE Fig. 19) A square-wave signal from IC101 pin 41 (TP103) is used to sound the buzzer via switching transistor T101 (TP101).
  • Page 17 8.3. THE LINE INTERFACE SECTION (SEE BLOCK DIAGRAM Fig. 19) 8.3.1. INTRODUCTION This section consists of the telephone line interface, bell detector, hookswitch, pulse dialing circuits, audio circuits, DC mask & line impedance circuits, power supplies, and battery charger circuits. 8.3.2.
  • Page 18 A or B lines. The relay is energised when transistor T2 is switched on by a high level on the EARTH control line (TP77) from the BB-IC IC101. D1 will quench the large back-emf voltage that would otherwise occur across the relay coil when T2 turns off. 8.3.4.
  • Page 19 8.3.9. POWER SUPPLIES (SEE Fig. 23) The AC Adaptor for the KX-TCD952NLB consists of two separate isolated DC supplies providing a +8 V supply for the base circuitry, and a 9 V supply only for the charger circuit. The isolation is...
  • Page 20 9. BLOCK DIAGRAM RF UNIT (HANDSET)
  • Page 21 10. BLOCK DIAGRAM BASE-BAND SECTION (HANDSET)

  • Page 22: Circuit Operation (Handset)

    11. CIRCUIT OPERATION (HANDSET) 11.1. THE BASE-BAND SECTION (SEE BLOCK DIAGRAM Fig. 25) 11.1.1. INTRODUCTION The base-band section consists of a base-band integrated circuit (BBIC), a Flash PROM, an EEPROM, an LCD Display, a Microphone, an Earpiece, and power supply/battery management circuits.
  • Page 23 11.1.2. THE BASE-BAND INTEGRATED CIRCUIT (BBIC) The National SC14405 BBIC (IC1) is a CMOS device designed to handle all the audio, signal and data processing needed in a DECT handset. It contains two microprocessors - one general purpose - while the other ìburst mode controllerî takes care of DECT specific physical layer and radio section control.The BBIC also contains the ADPCM transcoders, a low power 14 bit codec (ADC/DAC), various other ADCís, DACís and timers, a UART for data communication with RF unit, a gaussian filter for the DECT GFSK modulation method, clock and data recovery circuits,...
  • Page 24 Audio from the receiver RECDAT (TP54) enters the BBIC on pin 18 and passes through the clock recovery circuit. The burst mode controller separates out the B-field data, and performs de -encryption and de-scrambling as required. It then goes to the DAC part of the codec where data is turned back into analogue audio.
  • Page 25 11.1.8. FACTORY SERIAL PORT (SEE Fig. 25) In order to communicate with the handset during manufacture and servicing (using a PC) a serial data link has been provided. Serial data input/output is provided on J6 (TP65), and a ground is provided on J7. The bi-directional serial data line is split into two at IC1 pin 27 (input) and pin 26 (output).
  • Page 26 11.1.11. MAIN 3V REGULATOR (SEE Fig. 29) The BBIC measures the battery voltage on pins 58 using an internal ADC. If the battery voltage is below 3.36 V, TC3 is switched to power off mode. R7 and C5 provide a reset pulse (TP84) used for resetting the BBIC when power on.

  • Page 27: Adjustment (Handset)

    Adjustment objectives Adjustment item Symptom Remedy Clock frequency Synchronization with the portable handset is lost Perform the adjustments immediately. described in item(1). No link is established. Tools required for adjustments - Frequency counter - Personal computer - Serial communication tool - Test software (batch files) - Line simulator - Oscillator...
  • Page 28 Tools required for adjustments - Frequency counter - Power supply unit (DC 3V~5V, 1A) - Personal computer - Serial communication tool - Test software (batch files) Item(1) 1. Connect the serial link to test computer to J6 (serial data) and J8 (GND).
  • Page 29 8. Send batch file “WRTBATT.BAT M1”. 9. Calculate the low value 2 level: 10. Send “WRTBATT.BAT M3”. 14. CHECK PROCEDURE (BASE UNIT) 14.1. TEST EQUIPMENT REQUIRED AND EQUIPMENT SETUP 14.2. INITIAL POWER + BBIC TESTS 1. Turn on the 10V supply. 2.

  • Page 30: Loopback Test

    3. Transfer SCLK (TP148) to the frequency counter. 4. Send batch file “SETFREQ nn” to set the clock frequency. The default value of nn is 80. Increase the value to increase the frequency and vice-versa. The clock frequency must be 3,456 kHz ( ±...
  • Page 31 13. Press POWER RAMP. 14. Check the Burst fits mask. 15. Press MENU UP. 16. Press BER. 17. Note the Sensitivity (reduce RF LEVEL for a BER of approx. 1000ppm) : the RF LEVEL must be < - 90 dBm. 18.

  • Page 32: Check Procedure (Handset)

    17. Send batch file “STOPDTMF”. 18. Disconnect the tel line from the base under test to the line simulator.nm 19. Connect the “Bell” Oscillator to the tel line. 20. Set the “Bell” Oscillator voltage to 32V RMS 23Hz. 21. Send batch file “RINGDET”. 22.
  • Page 33 15.2. INITIAL POWER + BBIC TESTS 1. Turn on the 3.9V supply. 2. Press the “Power-on” button. 3. Check for a “beep” and approx 80 mA current on the 3.9V supply. 4. Check the 3.0V supply voltage (TP10). It must be 2.85 +/- 0.3. 5.
  • Page 34 2. Send batch file “H”. 3. Confidence check of Power (NTP): must be +20 to +25 dBm. 4. Confidence check of Frequency Offset: must be 0 ± 40 kHz. 5. Confidence check of Deviation of B field Data Type 01010101: must be 207 to 270 kHz.

  • Page 35: Troubleshooting Guide

    19. Press BEARER RELEASE. Note: These tests can be repeated on Traffic Carriers 0 and 9. 16. TROUBLESHOOTING GUIDE 16.1. HANDSET: DOES NOT OPERATE...
  • Page 37 16.2. HANDSET: LINK...
  • Page 40 16.3. HANDSET: DOES NOT LINK 16.4. BASE UNIT: DOES NOT CHARGE...
  • Page 41 16.5. HANDSET: DOES NOT CHARGE...

  • Page 42: No Voice Reception

    16.6. NO VOICE RECEPTION...

  • Page 43: No Voice Transmission

    16.7. NO VOICE TRANSMISSION 16.8. BASE UNIT: DOES NOT LINK...

  • Page 44: Cabinet And Electrical Parts Location

    17. CABINET AND ELECTRICAL PARTS LOCATION (BASE UNIT)
  • Page 45 18. CABINET AND ELECTRICAL PARTS LOCATION (HANDSET)

  • Page 46: Accessories And Packing Materials

    19. ACCESSORIES AND PACKING MATERIALS...

  • Page 47: Replacement Parts List

    20. REPLACEMENT PARTS LIST This replacement parts list is for KX-TCD952NLB only. Refer to the simplified manual (cover) for other areas. Notes: 1. The marking (RTL) indicates that the Retention Time is limited for this item.
  • Page 48 After the discontinuation of this assembly in production, the item will continue to be available for a specific period of time. The retention period of availability is dependent on the type of assembly, and in accordance with the laws governing parts and product retention.
  • Page 49 20.1.2. MAIN P.C.BOARD PARTS Ref. No. Part No. Part Name & Description Remarks PCB1 PQWPCD952NLH MAIN P. C. BOARD ASS'Y ( RTL ) (ICS) PQVILMV321M5 PQVIMC295130 PQVILM1117MP IC101 PQVINS14424V IC102 PQWICD952NLH IC IC103 PQVIT2432WM6 (TRANSISTORS) 2SA1037K TRANSISTOR(SI) PQVTBCP5216T TRANSISTOR(SI) 2SA1807NT TRANSISTOR(SI) PQVTBF822T7 TRANSISTOR(SI)
  • Page 50 Ref. No. Part No. Part Name & Description Remarks D103 LNJ311G8TRU DIODE(SI) (VARISTOR) PQVDDSS301L VARISTOR (JACKS) PQJJ1T018Z JACK/SOCKET PQJJ1T019Z JACK/SOCKET (CRYSTAL OSCILLATOR) X101 PQVCF1036N4Z CRYSTAL OSCILLATOR (PHOTO ELECTRIC TRANSDUCER) PQVIPC357CN PHOTO ELECTRIC TRANSDUCER (OTHERS) BUZ101 PQEFBC12111B BUZZER (RESISTORS) PQ4R18XJ472 4.7k ERJ3GEYJ103 PQ4R18XJ565 5.6M...
  • Page 51 Ref. No. Part No. Part Name & Description Remarks ERJ3GEYJ273 ERJ3GEYJ223 ERJ12YJ390 ERJ14YJ8R2 ERJ3GEYJ473 ERJ3GEYJ331 ERJ3GEYJ152 1.5k ERJ3GEYJ102 ERJ3GEYJ101 PQ4R10XJ8R2 PQ4R10XJ1R5 ERJ3GEYJ101 PQ4R10XJ122 1.2k ERJ3GEYJ102 ERJ3GEYJ202 ERJ3GEYJ224 220k ERJ3GEYJ332 3.3k R101 ERJ3GEYJ102 R102 ERJ3GEYJ103 R103 ERJ3GEYJ151 R104 ERJ3GEYJ151 R105 ERJ3GEYJ105 R106 ERJ3GEYJ105 R107...
  • Page 52 Ref. No. Part No. Part Name & Description Remarks JMP19 PQ4R10XJ000 JMP20 PQ4R10XJ000 JMP22 PQ4R10XJ000 JMP202 ERJ3GEY0R00 JMP203 ERJ3GEY0R00 JMP204 ERJ3GEY0R00 JMP207 ERJ3GEY0R00 (CAPACITORS) ECUV1C104KBV 0.1 ECQE2474KF 0.47 ECUV1H102KBV 0.001 ECUV1H102KBV 0.001 PQCUV1C105ZF 1 ECUV2H102KB 0.001 ECUV1H102KBV 0.001 ECUV2H102KB 0.001 ECUV1H102KBV 0.001 ECUV2H681KB 680P...
  • Page 53 Ref. No. Part No. Part Name & Description Remarks C106 PQCUV1C224KB 0.22 C107 PQCUV1C105ZF 1 C108 ECUV1H100DCV 10P C109 PQCUV1C224KB 0.22 C110 ECUV1H100DCV 10P C111 ECUV1C104KBV 0.1 C112 ECUV1H100DCV 10P C113 ECUV1C104KBV 0.1 C114 PQCUV1C105ZF 1 C115 ECUV1H100DCV 10P C116 ECST0JY106 C117 PQCUV1C105ZF 1...
  • Page 54 Ref. No. Part No. Part Name & Description Remarks PQAX3P26Z SPEAKER PQBX10324Z1 FUNCTION BUTTON PQGT14109Z NAME PLATE PQGP10145Z1 LCD PANEL PQHG10486Z RINGER RUBBER PQHR10649Y LCD HOLDER PQHR10651Z LCD SPONGE PQHS10342Z SPEAKER NET PQJC10035Z BATTERY TERMINAL PQJC10036Z BATTERY TERMINAL PQJC10037Z BATTERY TERMINAL PQJC904Y BATTERY TERMINAL PQJT10143Z...
  • Page 55 Ref. No. Part No. Part Name & Description Remarks PQLQR2M5N6K COIL (OTHERS) PQADS404HB LIQUID CRYSTAL DISPLAY A101(+) PQJT10152Y ANTENNA A101(-) PQJT10152Y ANTENNA PQEFBC12111B BUZZER PQJT10090Z BATTERY TERMINAL PQJT10090Z BATTERY TERMINAL PQJT10090Z BATTERY TERMINAL PQJT10090Z BATTERY TERMINAL PQJM146Z MICROPHONE PQVCF1036N3Z CRYSTAL OSCILLATOR PQJS30B11Z CONNECTOR LS2(+)
  • Page 56 Ref. No. Part No. Part Name & Description Remarks ERJ3GEYJ102 ERJ3GEYJ822 8.2k ERJ3GEYJ332 3.3k ERJ3GEYJ1R0 ERJ3GEYJ100 ERJ3GEYJ102 ERJ3GEYJ101 ERJ3GEYJ103 ERJ3GEYJ103 ERJ3GEYJ103 ERJ3GEYJ104 100k ERJ3GEYJ563 ERJ3GEYJ104 100k ERJ3GEYJ332 3.3k (CAPACITORS) PQCUV1E104MD 0.1 ECUV1C104KBV 0.1 ECEV1AA101 ECUV1H100DCV 10P PQCUV1C224KB 0.22 ECUV1H100DCV 10P PQCUV1C105ZF ECUV1C104KBV 0.1 ECUV1H100DCV 10P...

  • Page 57: Circuit Board And Wiring Connection Diagram

    Ref. No. Part No. Part Name & Description Remarks ECUV1H100DCV 10P ECUV1C104KBV 0.1 ECUV1C104KBV 0.1 ECUV1C104KBV 0.1 ECUV1C104KBV 0.1 ECUV1C104KBV 0.1 ECUV1C104KBV 0.1 ECUV1H100DCV 10P ECUV1H100DCV 10P ECUV1H100DCV 10P ECUV1H100DCV 10P ECUV1C104KBV 0.1 PQ4R10XJ000 ECUV1H101JCV 100P PQCUV1H102J 0.001 PQCUV1H102J 0.001 ECUV1H100DCV 10P RF UNIT PARTS RFM100...

  • Page 58: Schematic Diagram (Handset)

    22.1. SCHEMATIC DIAGRAM (HANDSET) U (Q) / KXTCD952NLB-UK / Printed in Japan...
  • Page 59 (Component View) LS12 LS11 JMP2 C70 JMP3 TP66 TP74 TP81 JMP1 TP73 TP72 TP71 LS22 LS21 TP80 TP79 TP78 TP75 TP68 TP77 TP69 TP101 TP76 TP70 TP67 (Flow Solder Side View) C37 R36 A102 D 12 C35 R51 A101 R25 C20 RFM1 PQUP10927Z...
  • Page 60 5.6M LINE VOLTAGE 48V DC +2.5V (ON-HOOK) 5.6M +48V ON-HOOK +9.9V (ON-HOOK) +0.1V ON-HOOK +10.2V OFF-HOOK +10.0V OFF-HOOK +9.9V (ON-HOOK) 330W 48V DC 5.6k 0.1m 0.068m +46V ON-HOOK +48V OFF-HOOK 2.2m 1.5k 2.2m 1.5k 1.5V 1.5V +2.5V (ON-HOOK) +1.9V (ON-HOOK) +0V ON-HOOK +0.7V OFF-HOOK N.M.
  • Page 61 2.9V 2.9V 3.9V 3.9V 3.3V ANALOG RX LED-ON 1.4V ANALOG TX LED-OFF 2.5V 2.3V (WHEN TALK MODE) +3V TO +8V WHEN ON CHARGE LED-ON 1.1V LED-OFF 0.4V 2.5V (WHEN TALK MODE) 2.9V 2.5V 0.4V (WHEN TALK MODE) 3.9V 2.9V 700mV 2.9V 2.9V 0V 2.9V...
  • Page 62 (Component View) (Flow Solder Side View) JMP1 JMP3 JMP7 JMP21 JMP6 JMP10 JMP13 JMP4 JMP14 JMP5 JMP12 JMP8 JMP9 JMP15 IC201 JMP18 JMP19 JMP16 JMP17 JMP20 JMP22 R114 C156 C136 C137 X101 R102 C127 R136 R21 R19 C148 D104 T101 C105 C139 BUZ101...

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