Panasonic KX-TC1709LBB Service Manual
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Panasonic KX-TC1709LBB Service Manual

Panasonic KX-TC1709LBB Service Manual

900mhz digital cordless phone
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Telephone Equipment
KX-TC1709LBB
900MHz Digital Cordless Phone
Black Version
(for Brazil)
© 2001 Kyushu Matsushita Electric Co., Ltd. All
rights
reserved.
distribution is a violation of law.
ORDER NO. KM40109678C3
Unauthorized
copying
and

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Summary of Contents for Panasonic KX-TC1709LBB

  • Page 1 ORDER NO. KM40109678C3 Telephone Equipment KX-TC1709LBB 900MHz Digital Cordless Phone Black Version (for Brazil) © 2001 Kyushu Matsushita Electric Co., Ltd. All rights reserved. Unauthorized copying distribution is a violation of law.

  • Page 2: Table Of Contents

    KX-TC1709LBB CONTENTS Page Page 1 STANDARD BATTERY LIFE 11 EXPLANATION OF BBIC (Base Band IC) DATA 2 LOCATION OF CONTROLS COMMUNICATION 2.1. Base unit 11.1. Calling 2.2. Handset 11.2. To Terminate Communication 3 DISPLAY 11.3. Ringing 4 CONNECTIONS 11.4. Ports for Transmitting and Receiving of Data 4.1.
  • Page 3 KX-TC1709LBB 19.3. Modification Procedure of Bridge 25.2. Handset (28 SCHEMATIC DIAGRAM (Handset)) 20 CABINET AND ELECTRICAL PARTS (Base Unit) 25.3. Memo 21 CABINET AND ELECTRICAL PARTS (Handset) 26 SCHEMATIC DIAGRAM (RF Unit) 22 ACCESSORIES AND PACKING MATERIALS 27 SCHEMATIC DIAGRAM (Base Unit) 23 TERMINAL GUIDE OF ICｴS, TRANSISTORS AND DIODES...

  • Page 4: Standard Battery Life

    KX-TC1709LBB 1 STANDARD BATTERY LIFE...
  • Page 5 KX-TC1709LBB...

  • Page 6: Location Of Controls

    KX-TC1709LBB 2 LOCATION OF CONTROLS 2.1. Base unit...

  • Page 7: Handset

    KX-TC1709LBB 2.2. Handset...

  • Page 8: Display

    KX-TC1709LBB 3 DISPLAY The handset shows you instructions and information on the display. These display prompts are shown below.
  • Page 9 KX-TC1709LBB...

  • Page 10: Connections

    4 CONNECTIONS Note: · USE ONLY WITH Panasonic AC ADAPTOR PQLV2LBZ. · 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, you cannot access the service.

  • Page 11: Adding Another Phone

    KX-TC1709LBB 4.1. 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 12: Operation

    KX-TC1709LBB 5 OPERATION 5.1. Making Calls...
  • Page 13 KX-TC1709LBB...
  • Page 14 KX-TC1709LBB...
  • Page 15 KX-TC1709LBB...

  • Page 16: Answering Calls

    KX-TC1709LBB 5.2. Answering Calls When a call is received, the unit rings and the CALLER ID indicator on the base unit flashes quickly. If you subscribe to a Caller Display service, the calling party information will be displayed after the first ring. In order to view the Caller ID information, please wait until the second ring to answer a call.

  • Page 17: Flash Button

    KX-TC1709LBB 5.3. FLASH Button...

  • Page 18: Disassembly Instructions

    KX-TC1709LBB 6 DISASSEMBLY INSTRUCTIONS...
  • Page 19 KX-TC1709LBB Shown in Fig. To Remove Remove Lower Cabinet Screws (2.6 X 12)..(A) × 4 Main P.C. Board Tapes and solder Main P.C. Board Battery Cover Battery Cover Rear Cabinet Screws (2.6 X 12)..(B) × 2 Rear Cabinet Rear Cabinet Main P.C.

  • Page 20: Assembly Instructions

    KX-TC1709LBB 7 ASSEMBLY INSTRUCTIONS 7.1. Assembly the LCD to P.C. Board (Handset)

  • Page 21: Troubleshooting Guide

    KX-TC1709LBB 8 TROUBLESHOOTING GUIDE Cross Reference: 8.1. Check Power (P.22) 8.2. Check Battery Charge (P.23) 8.3. Check Link (P.23) 8.4. Check the RF Unit (P.24) 8.5. Check Handset Transmission (P.29) 8.6. Check Handset Reception (P.29) 8.7. Check Call ID (P.29)

  • Page 22: Check Power

    KX-TC1709LBB 8.1. Check Power Cross Reference: 13.3. Power Supply Circuit (P.40) 13.4. Reset Circuit (P.41) NOTE: EEPROM is IC551. DSP is IC501. ** Models with no LCD can skip.

  • Page 23: Check Battery Charge

    KX-TC1709LBB 8.2. Check Battery Charge 8.3. Check Link NOTE: EEPROM is IC551. DSP is IC501. NOTE: EEPROM is IC551. DSP is IC501. (*1) Refer to 8.4.1. Finding out the Defective Unit (P.24). Cross Reference: 8.4. Check the RF Unit (P.24) 13.3.

  • Page 24: Check The Rf Unit

    KX-TC1709LBB 8.4. Check the RF Unit 8.4.1. Finding out the Defective Unit Prepare HS JIG (Handset-jig) and BS JIG (Base Unit-jig) 2). Place the HS JIG on the cradle of the base unit for checking, then confirm that they are linked. Place the handset for checking on the cradle of the BS JIG, then confirm that they are linked.
  • Page 25 KX-TC1709LBB 8.4.2.2. Base Unit - jig (BS JIG) for Handset The base unit jig uses two modes: NORMAL POWER mode and TEST POWER mode. (1) NORMAL POWER mode. This test simulates the handset is at normal/close distance. The base unit is in NORMAL POWER mode right after the AC adapter has been inserted.
  • Page 26 KX-TC1709LBB 8.4.3. RF Check Flowchart : Details of confirmation items are following in “8.4.4. Check Table for RF Block (P.27)”. NOTE: <Base Unit> EEPROM is IC551. DSP is IC501. <Handset> EEPROM is IC202. DSP is IC201.
  • Page 27 KX-TC1709LBB 8.4.4. Check Table for RF Block Item BS (Base unit) (*1) HS (Handset) (*1) Link confirmation Procedure 1. Put “HS JIG” on BS. 1. Put HS on “BS JIG”. [NORMAL 2. Set MODE to [NORMAL POWER] position 2. Set MODE to [NORMAL POWER] position POWER] of “HS JIG“.
  • Page 28 KX-TC1709LBB 8.4.5. RF-DSP interface signal wave form...

  • Page 29: Check Handset Transmission

    KX-TC1709LBB 8.5. Check Handset Transmission Cross Reference: 13.7. Signal Route (P.44). 8.6. Check Handset Reception Cross Reference: 13.7. Signal Route (P.44). NOTE: When checking the RF UNIT, Refer to 8.4. Check the RF Unit (P.24) 8.7. Check Call ID Cross Reference: 13.5.

  • Page 30: Test Mode

    KX-TC1709LBB 9 TEST MODE 9.1. Test mode flow chart for Base Unit (*1) See 9.4. Base Unit Reference Drawing (P.32) - Insert AC adaptor for entering the test mode during pressing the test switch . (*2) While the Tele line is connected, the “Caller ID” LED is ON/OFF as well.

  • Page 31: Test Mode Flow Chart For Handset

    KX-TC1709LBB 9.2. Test mode flow chart for Handset (*1) See 9.5. Handset Reference Drawing ( P.33).---Insert Battery for entering the Test mode during pressing the test switch.

  • Page 32: X101 Check

    KX-TC1709LBB 9.3. X101 Check The confirmation is made under the Continuous Send mode of TEST MODE. Equipment: Frequency counter TP for adjustment: TP_ANT Measure range: 902.713 MHz ± 5 kHz (1ch) at Test Standby mode in 9 TEST MODE (P.30).

  • Page 33: Handset Reference Drawing

    KX-TC1709LBB...

  • Page 34: Frequency Table

    KX-TC1709LBB 9.6. FREQUENCY TABLE...

  • Page 35: Description

    KX-TC1709LBB 10 DESCRIPTION 10.1. Frequency The frequency range of 902.713 MHz ~ 927.289 MHz is used. Transmitting and receiving channel between base unit and handset is same frequency. Refer to the Frequency Table. 10.2. Time Division Duplex (TDD) operation Transmission/reception between the base unit and handset is performed by time-sharing as shown in Fig. 7. 1 slot time of transmission and reception is 1mS.Same frequency is used in transmitting and receiving.

  • Page 36: Signal Flowchart In The Whole System

    KX-TC1709LBB 10.3. Signal Flowchart in the Whole System Reception CN1 of the base unit is connected to the TEL line, and the signal is input through the bridge diode D101. While talking the relay (Q121) is turned ON and amplified at the amplifiers Q50, then led to DSP (IC201). DSP generates ADPCM signal. The ADPCM signal is input to RFIC (IC101) of RF UNIT.

  • Page 37: Explanation Of Bbic (Base Band Ic) Data

    KX-TC1709LBB 11 EXPLANATION OF BBIC (Base Band IC) DATA COMMUNICATION 11.1. Calling 11.3. Ringing 11.4. Ports for Transmitting and Receiving of Data 11.2. To Terminate Communication...

  • Page 38: Block Diagram (Base Unit)

    KX-TC1709LBB...

  • Page 39: Circuit Operation (Base Unit)

    KX-TC1709LBB 13 CIRCUIT OPERATION (Base Unit) General Description: (DSP, Flash Memory) is a digital speakerphone/speech/signal processing system that implements all the functions of speech compression, record and playback, and memory management required in a digital telephone answering machine. 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 40: Power Supply Circuit

    KX-TC1709LBB 13.3. Power Supply Circuit Function: The power supply voltage from AC adaptor is converted to the desired voltage of each block. Circuit Operation: This unit supplies the voltage to each block as shown below. 13.3.1. Charge Circuit The voltage from the AC is supplied to the main charge circuits. Normal charge (70 mA) of maximum 20-hours is started soon after the Handset is placed on the base unit.

  • Page 41: Reset Circuit

    KX-TC1709LBB 13.4. Reset Circuit Function: This circuit is used for 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 IC301, D306 and power is supplied to the DSP.

  • Page 42: Telephone Line Interface

    KX-TC1709LBB 13.5. Telephone Line Interface Telephone Line Interface Circuit: 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, Q121 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 43: Parallel Connection Detect Circuit

    KX-TC1709LBB 13.6. 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 44: Signal Route

    KX-TC1709LBB 13.7. Signal Route Each signal route is as follows.

  • Page 45: Calling Line Identification Circuit (Caller Id)

    KX-TC1709LBB 13.8. 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 46 KX-TC1709LBB...

  • Page 47: Block Diagram (Handset)

    KX-TC1709LBB 14 BLOCK DIAGRAM (Handset)

  • Page 48: Circuit Operation (Handset)

    KX-TC1709LBB 15 CIRCUIT OPERATION (Handset) 15.1. Construction The circuit mainly consists of DSP and RF unit as shown in the block diagram. 15.1.1. DSP:IC201 Function · Battery Low, Power down defect circuit · Ringer Generation · Interface circuit RF unit, speaker, mic, LED, Key scan, LCD, Headset 15.1.2.

  • Page 49: Charge Circuit

    KX-TC1709LBB 15.3. Charge Circuit Ni-Cd battery is connected to CN202. When the handset is put on the cradle of the base unit, the power is supplied from CHARGE1 and CHARGE2 terminals to charge the battery. Q207 detects the voltage of CHARGE1 and CHARGE2 terminals, then the handset makes ID code setting with the base unit.

  • Page 50: Reception Signal

    KX-TC1709LBB 15.6. Reception Signal The voice signal from the base unit is output to DSP (33) (HSSOUT). This signal is led to the headset jack (CN203) and DSP (44) (HSMIP). The signal input to DSP (44) is inverted and output to DSP (34) (LOUTO).The signal through the headset jack is inverted, then output from DSP (34) to drive the speaker.

  • Page 51: Cpu Data (Base Unit)

    KX-TC1709LBB 16 CPU DATA (Base Unit) 16.1. IC501...

  • Page 52: Cpu Data (Handset)

    KX-TC1709LBB 17 CPU DATA (Handset) 17.1. IC201...

  • Page 53: Explanation Of Ic Terminals (Rf Unit)

    KX-TC1709LBB 18 EXPLANATION OF IC TERMINALS (RF Unit) 18.1. IC101...

  • Page 54: How To Replace Flat Package Ic

    KX-TC1709LBB iron as shown in below figure. 19 HOW TO REPLACE FLAT PACKAGE IC 19.1. 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.

  • Page 55: Cabinet And Electrical Parts (Base Unit)

    KX-TC1709LBB 20 CABINET AND ELECTRICAL PARTS (Base Unit)

  • Page 56: Cabinet And Electrical Parts (Handset)

    KX-TC1709LBB 21 CABINET AND ELECTRICAL PARTS (Handset)

  • Page 57: Accessories And Packing Materials

    KX-TC1709LBB 22 ACCESSORIES AND PACKING MATERIALS...

  • Page 58: Terminal Guide Of IcｴS, Transistors And Diodes

    KX-TC1709LBB 23 TERMINAL GUIDE OF IC´S, TRANSISTORS AND DIODES 23.1. Base Unit 23.2. Handset...

  • Page 59: Replacement Parts List

    Part No. Part Name & Description Remarks PQWE10022Z CHARGE TERMINAL LIST PQKE10131Z1 HOOK LEVER PQKE10134Z1 HOOK KNOB This replacement parts list are KX-TC1709LBB only. 1AKM10487Z3 UPPER CABINET PQQT22278Z CHARGE LABEL Note: PQHA10017Z LEG CUSHION RUBBER 1. RTL (Retention Time Limited) PQHA10018Z...

  • Page 60: Handset

    KX-TC1709LBB Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R111 ERJ3GEYJ394 390k C111 ECKD2H681KB 680P R112 ERJ3GEYJ394 390k C112 ECKD2H681KB 680P R113 ERJ3GEYJ472 4.7k C115 ECUV1H103KBV 0.01 R115 ERJ3GEYJ155 1.5M C121 ECUV1H103KBV 0.01...
  • Page 61 KX-TC1709LBB Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks PQHS10457Z SP NET R218 ERJ3GEYF824 820k PQHS10470Z CUSHION LCD R222 ERJ3GEYJ101 PQHX11005Z LCD SHEET R224 ERJ3GEYJ103 PQJT10176Z CHARGE TERMINAL (L) R225 ERJ3GEYJ472 4.7k...
  • Page 62 KX-TC1709LBB Ref. Part No. Part Name & Description Remarks C279 ECUV1H010CCV C280 ECUV1C104ZFV C282 ECUV1C104ZFV C285 ECUV1C105ZF C291 ECUV1C104ZFV C294 ECUV1C104ZFV C303 ECST0JY106 C304 ECUV1C104ZFV C305 ECUV1H030CCV 24.2.3. RF P.C.BOARD PART Ref. Part No. Part Name & Description Remarks PCB200...

  • Page 63: For Schematic Diagram

    KX-TC1709LBB 25 FOR SCHEMATIC DIAGRAM 25.1. Base Unit (27 SCHEMATIC DIAGRAM (Base Unit)) Notes: 1. DC voltage measurements are taken with voltmeter from the negative voltage line. 2. This schematic diagram and circuit board may be modified at any time with the development of new technology.

  • Page 64: Memo

    KX-TC1709LBB 25.3. Memo...

  • Page 65: Schematic Diagram (Rf Unit)

    KX-TC1709LBB...

  • Page 66: Schematic Diagram (Base Unit)

    KX-TC1709LBB 27 SCHEMATIC DIAGRAM (Base Unit) 3.3Vp-p 3.3Vp-p IC551 -16.1dBm 343mVp-p IC501 -14.5dBm 413mVp-p...
  • Page 67 KX-TC1709LBB -27.2dBm 96mVp-p -20.4dBm 209mVp-p Input f=1.1kHz 140mVp-p (-25dBm/600 ) Output -15.5dBm Call ID Data 3.3V IC331 IC321 3.6V 6.0V IC301 3.3V KX-TC1709LBB: SCHEMATIC DIAGRAM (Base Unit)

  • Page 68: Schematic Diagram (Handset)

    KX-TC1709LBB 28 SCHEMATIC DIAGRAM (Handset) 3Vp-p 3Vp-p IC202...
  • Page 69 KX-TC1709LBB Input 1.1kHz 18mVp-p (-45dBm/600 (Headset) Input 1.1kHz -43dBm/600 130mV -24.5dBm (Headset) IC201 51mV -33.0dBm 62mV -31.0dBm IC205 3.3V IC203 3.3V IC204 KX-TC1709LBB: SCHEMATIC DIAGRAM (Handset)

  • Page 70: Circuit Board (Rf Unit)

    KX-TC1709LBB 29 CIRCUIT BOARD (RF Unit) IC101...

  • Page 71: Circuit Board (Base Unit)

    KX-TC1709LBB 30 CIRCUIT BOARD (Base Unit) 30.1. Component View Power Down (PDN) Reset (RST) IC301 RF UNIT G 14 15 G IC501 (3.3 V) (3.3 V) X' tal CLK Charge Detect VRF (3.3 V)

  • Page 72: Flow Solder Side View

    KX-TC1709LBB 30.2. Flow Solder Side View Line A Line B IC551 Test...

  • Page 73: Circuit Board (Handset)

    KX-TC1709LBB 31 CIRCUIT BOARD (Handset) 31.1. Component View TP_VCC TP_PDN TP_Reset CLK (4MHz) IC201 IC202 3 4 5...

  • Page 74: Flow Solder Side View

    KX-TC1709LBB 31.2. Flow Solder Side View...
  • Page 75 KX-TC1709LBB KXTC1709LBB-AK Printed in Japan...

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