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Panasonic KX-T7565AL Service Manual

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DIGITAL PROPRIETARY TELEPHONE
KX-T7565AL
KX-T7565AL-B
White Version
Black Version
(for Australia)
© 2000 Kyushu Matsushita Electric Co., Ltd. All
rights
distribution is a violation of law.
ORDER NO. KMS0011532C3
reserved.
Unauthorized
copying
and

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Summary of Contents for Panasonic KX-T7565AL

  • Page 1 ORDER NO. KMS0011532C3 DIGITAL PROPRIETARY TELEPHONE KX-T7565AL KX-T7565AL-B White Version Black Version (for Australia) © 2000 Kyushu Matsushita Electric Co., Ltd. All rights reserved. Unauthorized copying distribution is a violation of law.

  • Page 2: Table Of Contents

    KX-T7565AL / KX-T7565AL-B CONTENTS Page Page 1 CAUTION 8.5. RESET CIRCUIT 2 FOR SERVICE TECHNICIANS 8.6. TONE GENERATION CIRCUIT 3 LOCATION OF CONTROLS 8.7. HANDSET CIRCUIT 4 DISASSEMBLY INSTRUCTION 8.8. SPEAKER-PHONE CIRCUIT 4.1. HOW TO REMOVE THE LOWER CABINET(Procedure 1) 9 TROUBLE SHOOTING GUIDE 9.1.

  • Page 3: Location Of Controls

    KX-T7565AL / KX-T7565AL-B 3 LOCATION OF CONTROLS...

  • Page 4: Disassembly Instruction

    KX-T7565AL / KX-T7565AL-B 4 DISASSEMBLY INSTRUCTION 4.1. HOW TO REMOVE THE LOWER CABINET (Procedure 1) (1) Remove the 5 screws A. (2) Remove the lower cabinet. 4.2. HOW TO REMOVE THE HOOK BUTTON (Procedure 1→ → → → 2) (1) Remove the hook button.

  • Page 5: How To Remove The Main Boards(Procedure 1ｮ2ｮ 3)

    KX-T7565AL / KX-T7565AL-B 4.3. HOW TO REMOVE THE MAIN BOARDS (Procedure 1→ → → → 2→ → → → 3) (1) Remove the 6 screws A. (2) Remove the main board, speaker, H/S jack and mic. 4.4. HOW TO REMOVE THE LCD BLOCK (Procedure 1→...

  • Page 6: Ic Data

    KX-T7565AL / KX-T7565AL-B 5 IC DATA 5.1. Name Dir. Pull Up Type Act. Block Descriptions bidir 8.0mA high PT5B03 Data Bus [3] bidir 8.0mA high PT5B03 Data Bus [2] bidir 8.0mA high PT5B03 Data Bus [1] bidir 8.0mA high PT5B03...
  • Page 7 KX-T7565AL / KX-T7565AL-B NROW4 output CMOS 4.0mA PC5O02 0.01 LED Row Drive [4] NROW5 output CMOS 4.0mA PC5O02 0.01 LED Row Drive [5] NROW6 output CMOS 4.0mA PC5O02 0.01 LED Row Drive [6] NROW7 output CMOS 4.0mA PC5O02 0.01 LED Row Drive [7]...

  • Page 8: Ic2

    KX-T7565AL / KX-T7565AL-B 5.2. Classification Terminal Pin No. Input/Output Function Power supply Power supply terminal Ground terminal CVcc Connect to the Vcc terminal Vtref DTMF reference level voltage terminal Connect to the Vcc terminal Oscillation Input Input/Output terminal to the main oscillator.
  • Page 9 KX-T7565AL / KX-T7565AL-B Output Ringer tone vol. Control 1 Output Ringer tone vol. Control 2 Output Handset speaker mute control Output Handset mic mute control Output SP-Phone speaker mute control Output Off-hook-monitor control Output Handset power control Output SP-Phone power control...

  • Page 10: How To Replace The Flat Package Ic

    KX-T7565AL / KX-T7565AL-B 6 HOW TO REPLACE THE FLAT PACKAGE IC If you do not have the special tools (for example: SPOT HEATER) to remove the SPOT HEATER’S Flat IC, If you have solder (large amount) a soldering iron and a cutter knife, you can easily remove IC’s even though large than 100 pin.

  • Page 11: Flat Package Ic Installation Procedure

    KX-T7565AL / KX-T7565AL-B 6.3. FLAT PACKAGE IC INSTALLATION PROCEDURE 1. Temporary fix FLAT PACKAGE IC by soldering on two marked pins. *Check the accuracy of the IC setting with the corresponding soldering foil. 2. Apply flux for all pins of FLAT PACKAGE IC.

  • Page 12: Block Diagram

    7 BLOCK DIAGRAM IC7 SP-PHONE CIRCUIT RXA,RXB TEL JACK GATE DATA COMMUNICATION SPEAKER ARRAY TXA,TXB IC4,Q1 Side tone MICROPHONE control CK2M,SYNC communic ation Power circuit Off-hook IC5,Q3,Q4,D2 SP-PHONE monitor CODEC VOLUME control control 16.384 MHz IC10 W.OHCA RESET control Power control circuit HANDSET Q200,Q201,Q202 Ringer vol.

  • Page 13: Circuit Operations

    KX-T7565AL / KX-T7565AL-B 8 CIRCUIT OPERATIONS 8.1. KEY INPUT CONTROL CIRCUIT (1) CIRCUIT OPERATION Sequential input information (negative logic) from the DSHS proprietary telephone is executed by dynamic scanning. The ports P10 to P14 of IC2 are brought to low status consecutively.

  • Page 14: Lcd Control Circuit

    KX-T7565AL / KX-T7565AL-B 8.2. LCD CONTROL CIRCUIT (1) CIRCUIT OPERATION The LCD data is output from pins 12 of IC2. LCD contrast adjustment is performed by the circuit composed of Q10, R44, R45, R46 and R47. The contrast is determined only by the voltage level between pin 4 of CN1 and +5 V. Higher potential makes the contrast high.

  • Page 15: Led Circuit

    KX-T7565AL / KX-T7565AL-B 8.3. LED CIRCUIT (1) CIRCUIT OPERATION The LED executes dynamic lighting for the status indicators, and control is executed by the output ports C0 to C4 (column) and R0, R1, R4, R5 (row) of IC1. A fixed pulse (T=1.5 msec) is output continuously from IC1. This pulse is counted and the output of IC1 is shifted sequentially from C0 to C4.

  • Page 16: Data Communication Circuit

    KX-T7565AL / KX-T7565AL-B 8.4. DATA COMMUNICATION CIRCUIT (1) FUNCTION The data communication circuit serves the following functions: Information exchanger between the DSHS and DSHS proprietary telephone, key input information as well as data for the LED control, LCD control, etc. This information is continuously exchanged at all times.

  • Page 17: Reset Circuit

    KX-T7565AL / KX-T7565AL-B 8.5. RESET CIRCUIT (1) CIRCUIT OPERATION This circuit is used for transmission of a reset pulse to the CPU (IC2) at the following times, connecting the telephone line jack and circuit operation.

  • Page 18: Tone Generation Circuit

    KX-T7565AL / KX-T7565AL-B 8.6. TONE GENERATION CIRCUIT (1) FUNCTION All system tones including COL, extension, busy, DTMF signal and key-in tones are sent from Pins 60 of IC2 and controls the path by the Analog Switch (IC8). (2) CALLING TONES FROM COL AND EXT.
  • Page 19 KX-T7565AL / KX-T7565AL-B (3) BUSY STATION CALLING TONE 852 Hz and 697 Hz signals are output from Pin 61 of IC7 alternately at intervals of 60 ms. The signal flow is shown below. (4) DTMF SIGNAL A DTMF tone is generated by IC7 and the signal flow is shown below.

  • Page 20: Handset Circuit

    KX-T7565AL / KX-T7565AL-B 8.7. HANDSET CIRCUIT (1) TRANSMISSION SIGNAL PATH The analog input signal for the handset microphone is changed to a digital signal and sent through the telephone line via the following path: (2) RECEPTION SIGNAL PATH The digital input signal from the telephone line is changed to an analog signal by IC3 and sent to the receiver via the following path: (3) CIRCUIT DIAGRAM FOR TRANSMISSION / RECEPTION SIGNAL PATH.
  • Page 21 KX-T7565AL / KX-T7565AL-B (4) TRANSMISSION / RECEPTION SWITCHING The comparison result between Tx and Rx output is a DC level at IC7 Pin 23. Tx level is high......Pin 23=Pin 20-6mV Rx level is high......Pin 23=Pin 20-150mV The comparator output is connected to the attenuator control inside IC7.

  • Page 22: Trouble Shooting Guide

    KX-T7565AL / KX-T7565AL-B 9 TROUBLE SHOOTING GUIDE 9.1. NO OPERATION...

  • Page 23: The Electronic Volume Of The Speaker-Phone Does Not Work

    KX-T7565AL / KX-T7565AL-B 9.2. THE ELECTRONIC VOLUME OF THE SPEAKER-PHONE DOES NOT WORK 9.3. THE ELECTRONIC VOLUME OF THE HANDSET DOES NOT WORK...

  • Page 24: Speaker-Phone Trouble

    KX-T7565AL / KX-T7565AL-B 9.4. SPEAKER-PHONE TROUBLE 9.5. TONE DIAL TROUBLE...

  • Page 25: Handset Trouble

    KX-T7565AL / KX-T7565AL-B 9.6. HANDSET TROUBLE...

  • Page 26: Waveform

    KX-T7565AL / KX-T7565AL-B 10 WAVEFORM TX DATA TRANSFER LED CONTROL DATA RX DATA TRANSFER RX VOICE SERIAL DATA (VOICE DATA ON) H-L DATA TX VOICE SERIAL DATA (VOICE DATA ON) LED COTROL DATA CK2M...
  • Page 27 KX-T7565AL / KX-T7565AL-B KEY INPUT (KEY ON) INT RX, INT TX KEY SIGNAL A0, A1, IOR, IOW 16.384MHz D0, D1, D2, D3 8MHz...

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

    KX-T7565AL / KX-T7565AL-B 11 TERMINAL GUIDE OF IC’S, TRANSISTORS AND DIODES...

  • Page 29: Cabinet And Electrical Parts Location

    KX-T7565AL / KX-T7565AL-B 12 CABINET AND ELECTRICAL PARTS LOCATION...

  • Page 30: Accessories And Packing Materials

    KX-T7565AL / KX-T7565AL-B 13 ACCESSORIES AND PACKING MATERIALS...

  • Page 31: Replacement Parts List

    KX-T7565AL / KX-T7565AL-B 14 REPLACEMENT PARTS LIST Model KX-T7565AL/KX-T7565AL-B only. Ref. Part No. Part Name & Description Remarks Note: PSYF1033Y2 LOWER CABINET (BLACK VERSION) S 1. RTL (Retention Time Limited) PSHA1002Z RUBBER PARTS, FOOT PSGP1067Z1 PANEL, LCD (WHITE VERSION) The marking (RTL) indicates that the Retention Time is...
  • Page 32 KX-T7565AL / KX-T7565AL-B Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks D100 PQVDBRPY1204 ERJ3GEYJ330 D101 PQVDBRPY1204 ERJ3GEYJ103 D102 PQVDBRPY1204 ERJ3GEYJ273 D103 PQVDBRPY1204 ERJ3GEYJ473 D104 PQVDBRPY1204 ERJ3GEYJ103 D105 PQVDBRPY1204 ERJ3GEYJ104 100K D106 PQVDBRPY1204 ERJ3GEYJ222 2.2K...
  • Page 33 KX-T7565AL / KX-T7565AL-B Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R160 ERJ3GEYJ274 270K C135 ECUV1C104KBV R161 ERJ3GEYJ393 C136 ECUV1C104KBV R162 ERJ3GEYJ154 150K C137 ECUV1C333KDV 0.033 R301 ERJ3GEYJ153 C138 ECUV1C473KBV 0.047 R302...
  • Page 34 KX-T7565AL / KX-T7565AL-B...
  • Page 39 KX-T7565AL / KX-T7565AL-B H KXT7565ALL4 KXT7565ALBL4 Printed in Japan...

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Kx-t7565al-b

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