Panasonic KX-T7565X Service Manual
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Panasonic KX-T7565X Service Manual

Panasonic KX-T7565X Service Manual

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ORDER NO. KMS0008517C3
DIGITAL PROPRIETARY TELEPHONE
KX-T7565X / KX-T7565X-B
White Version
Black Version
(for Asia, Middle East Near, Latin America and Africa)
SPECIFICATIONS
2000 Kyushu Matsushita Electric Co., Ltd. All rights reserved.
Unauthorized copying and distribution is a violation of law.
1. CAUTION
Note:
When you mention the serial number, write down all 11 digits. / The serial number may be found
1

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Summary of Contents for Panasonic KX-T7565X

  • Page 1 ORDER NO. KMS0008517C3 DIGITAL PROPRIETARY TELEPHONE KX-T7565X / KX-T7565X-B White Version Black Version (for Asia, Middle East Near, Latin America and Africa) SPECIFICATIONS 2000 Kyushu Matsushita Electric Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.

  • Page 2: For Service Technicians

    the label affixed to the bottom of the unit. 2. FOR SERVICE TECHNICIANS 1. Note the following items when exchanging the LEDs (Ref. No. D100-107) of Main Board. 1) Do not reuse a LED which is removed from the P.C. Board. / 2) Use a soldering iron (less than 15 W) for exchanging LED.

  • Page 3: Disassembly Instruction

    4. DISASSEMBLY INSTRUCTION 4.1. HOW TO REMOVE THE LOWER CABINET / (Procedure 1)
  • Page 4 (1) Remove the 5 screws A. / (2) Remove the lower cabinet. 4.2. HOW TO REMOVE THE HOOK BUTTON / (Procedure 1 (1) Remove the hook button. 4.3. HOW TO REMOVE THE MAIN BOARDS / (Procedure 1...
  • Page 5 (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 (1) Pull out the flat cable. (See Fig. 1) / (2) Remove the LCD block. (See Fig.2) /...
  • Page 6 5. IC DATA 5.1. IC1...
  • Page 7 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 Data Bus [0] ADR1 input 12-38k high PT5D01U Address Bus [1] ADR0...
  • Page 8 output CMOS 4.0mA PC5O02 0.01 LED Row Drive [5] NROW5 output CMOS 4.0mA PC5O02 0.01 LED Row Drive [6] NROW6 output CMOS 4.0mA PC5O02 0.01 LED Row Drive [7] NROW7 output CMOS 4.0mA PC5O02 0.01 LED Row Drive [8] NROW8 output CMOS 4.0mA...
  • Page 10 Classification Terminal Pin No. Input/ Function Output Power Power supply terminal supply Ground terminal CVcc Connect to the Vcc terminal Vtref DTMF reference level voltage terminal / Connect Vcc terminal Oscillation X1 Input Input/Output terminal to the main oscillator. Output Connect to the ceramic oscillator.(8MHz) OSC1 Input...

  • Page 11: How To Replace The Flat Package Ic

    Output SP-Phone power control Output Side tone control Output Select A-Law/m-Law Output SP-Phone mic mute control Output Handset vol. Control 1 Output Handset vol. Control 2 Output Handset vol. Control 3 Output Read enable terminal of G/A (IC1) (Active Low) Output Write enable terminal of G/A (IC1) (Active Low) Output...
  • Page 12 1. When all of the IC lead can not been seen at the standard degree, fill with large quantities of solder. Note: If you do not fill with solder and directly cut the IC lead with the cutter, stress may build up directly in the P.C.board’s pattern.

  • Page 13: Flat Package Ic Installation Procedure

    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. 3.

  • Page 14: Lcd Control Circuit

    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. / If a key is pressed, the key-in information input is executed by portS P50 to P56. 8.2.

  • Page 15: Led Circuit

    LCD Contrast Control CONTRAST IC1 Pin 23 IC2 Pin 24 HIGH MIDDLE 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.

  • Page 16: Data Communication Circuit

    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

    (2) CIRCUIT OPERATION When the DSHS proprietary telephone receives an IRQ signal from the DSHS and after sending the key input information to the DSHS and receiving data for the LED control, etc., the DSHS proprietary telephone will return to the DSHS an acknowledge signal. (3) RECEPTION The data from the EMSS is received via the H and L lines along the path shown below.

  • Page 18: Tone Generation Circuit

    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).
  • Page 19 (2) CALLING TONES FROM COL AND EXT. For a calling tone from a CO line or extension, the single row tone signal is output from Pin 60 of IC2 and the tone volume is controlled by transistors Q999. Ringer Volume Control Level HIGH Q999...

  • Page 20: Handset Circuit

    (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. High Group 1209 Hz 1336Hz...

  • Page 21: Speaker-Phone Circuit

    (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. 8.8. SPEAKER-PHONE CIRCUIT (1) FUNCTION This circuit controls the automatic switching of the transmitted and received signals to and from the telephone line, when the unit is used in the hands-free mode.

  • Page 22: Troubleshooting Guide

    Tx level is Pin 23=Pin 20-6mV high......Rx level is Pin 23=Pin 20-150mV high......The comparator output is connected to the attenuator control inside IC7. (5) VOICE DETECTOR The output of the mic amp (Pin 10 of IC7) is supplied to Pin 13 of IC7 as a control signal for the voice detector.

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

    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

    9.4. SPEAKER-PHONE TROUBLE 9.5. TONE DIAL TROUBLE 9.6. HANDSET TROUBLE...
  • Page 25 10. WAVEFORM 11. TERMINAL GUIDE OF IC’S, TRANSISTORS AND DIODES...

  • Page 26: Cabinet And Electrical Parts Location

    12. CABINET AND ELECTRICAL PARTS LOCATION...

  • Page 27: Accessories And Packing Materials

    13. ACCESSORIES AND PACKING MATERIALS...

  • Page 28: Replacement Parts List

    14. REPLACEMENT PARTS LIST Model KX-T7565X/KX-T7565X-B Note: 1. RTL (Retention Time Limited) 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. The retention period of availability depends on the type of assembly and the laws governing parts and product retention.

  • Page 29: Cabinet And Electrical Parts

    replacing any of these components, only use specified manufacture's parts. 3. The S mark indicates service standard parts and may differ from production parts. 4. RESISTORS & CAPACITORS / Unless otherwise specified; / All resistors are in ohms ( ) K=1000 , M=1000k / All capacitors are in MICRO FARADS ( F) P=...

  • Page 30: Main Board Parts

    14.2. ACCESSORIES AND PACKING MATERIALS Ref. No. Part No. Part Name & Description Remarks PQJXF0202Z HANDSET (WHITE VERSION) PQJXF0201Z HANDSET (BLACK VERSION) PSJA1068Z TEL CORD PQJA214Y CURL CORD (WHITE VERSION) PQJA214V CURL CORD (BLACK VERSION) PQKL24Z82 STAND (WHITE VERSION) PQKL24Z0 STAND (BLACK VERSION) PSQW1586Z QUICK REFERENCE GUIDE / (ENGLISH)
  • Page 31 Ref. No. Part No. Part Name & Description Remarks Q202 2SA1576R TRANSISTOR(SI) Q999 UN5213 TRANSISTOR(SI) (DIODES) PQVDS1ZB60F1 DIODE(SI) PQVDEC10 DIODE(SI) D100 PQVDBRPY1204 LED D101 PQVDBRPY1204 LED D102 PQVDBRPY1204 LED D103 PQVDBRPY1204 LED D104 PQVDBRPY1204 LED D105 PQVDBRPY1204 LED D106 PQVDBRPY1204 LED D107 PQVDBRPY1204 LED D108...
  • Page 32 Ref. No. Part No. Part Name & Description Remarks ERJ3GEYJ472 4.7K ERJ3GEYJ330 ERJ3GEYJ472 4.7K ERJ3GEYJ472 4.7K ERJ3GEYJ472 4.7K ERJ3GEYJ472 4.7K ERJ3GEYJ123 ERJ3GEYJ203 ERJ3GEYJ472 4.7K ERJ3GEYJ203 ERJ3GEYJ123 ERJ3GEYJ472 4.7K ERJ3GEYJ105 ERJ3GEYJ182 1.8K ERJ3GEYJ271 ERJ3GEYJ560 ERJ3GEYJ271 ERJ3GEYJ560 ERJ3GEYJ221 ERJ3GEY0R00 ERJ3GEYJ330 ERJ3GEYJ271 ERJ3GEYJ680 ERJ3GEYJ330 ERJ3GEYJ330 ERJ3GEYJ330...
  • Page 33 Ref. No. Part No. Part Name & Description Remarks R105 ERJ3GEYJ104 100K R106 ERJ3GEYJ102 R107 ERJ3GEYJ104 100K R108 ERJ3GEYJ101 R109 ERJ3GEYJ474 470K R110 ERJ3GEYJ822 8.2K R111 ERJ3GEYJ222 2.2K R112 ERJ3GEYJ222 2.2K R113 ERJ3GEYJ392 3.9K R114 ERJ3GEYJ334 330K R115 ERJ3GEYJ123 R116 ERJ3GEYJ392 3.9K R117...
  • Page 34 Ref. No. Part No. Part Name & Description Remarks R305 ERJ3GEYJ682 6.8K R306 ERJ3GEYJ224 220K R307 ERJ3GEYJ104 100K R900 ERJ3GEYJ104 100K R996 ERJ3GEYJ330 R997 ERJ3GEYJ473 R998 ERJ3GEY0R00 (CAPACITORS) R148 ECUV1C333KDV 0.033 ECEV1HA2R2N PQCUV1H105JC 1 ECUV1H680JCV 68P PQCUV1H105JC 1 ECUV1H680JCV 68P ECUV1C104KBV 0.1 ECUV1H223KBV 0.022 ECUV1H223KBV 0.022...
  • Page 35 Ref. No. Part No. Part Name & Description Remarks C121 ECUV1C104KBV 0.1 C122 ECUV1C683KBV 0.068 C123 PQCUV1A475ZF 4.7 C124 PSCEV0JA101 C125 PSCEV0JA101 C126 PSCEV0JA102 1000 C127 PQCUV1A475ZF 4.7 C128 PSCEV0JA101 C129 PSCEV0JA470 C130 PQCUV1A475ZF 4.7 C131 PQCUV1H105JC 1 C132 PQCUV1H105JC 1 C133 ECUV1C683KBV 0.068 C134...
  • Page 36 KEY INPUT (KEY ON) INT RX, INT TX KEY SIGNAL A0, A1, IOR, IOW 16.384MHz D0, D1, D2, D3 8MHz...
  • Page 37 HANDSET RECEPTION SP-PHONE RECEPTION HANDSET TRANSMISSION SP-PHONE TRANSMISSION HANDSET SIDETONE OFF-HOOK MONITOR TRANSMISSION +5VD R300 C3 68P R4 4.7K R3 4.7K R7 4.7K R6 4.7K C993 +5VA R156 C151 50V0.01 C6 68P 50V2.2 R151 C144 +5VD +5VD R150 C987 6.3V220 4.7K +5VD C141...
  • Page 38 MUTE SW32 SW33 SW28 SW29 SW30 SW25 SW26 SW27 SW24 D110 D103 D102 D101 D100 D107 D106 D105 D104 PROGRAM TRANSFER SP-PHONE SW36 SW35 SW18 SW16 SW13 SW12 SW23 D109 SW39 HOLD STORE SW34 SW20 SW17 SW15 SW10 SW40 SW38 REDIAL INTERCOM FLASH...
  • Page 39 Q999 C900 Q998 R152 R900 R153 C146 R307 Q201 C302 R306 R155 R304 C301 Q202 R154 R303 R305 R160 C998 Q200 R302 C149 C992 C150 R301 R161 IC10 R54 Q4 R52 R51 R126 R128 R125 C995 R127 C124 C132 R139 C300 R140 R135...
  • Page 40 IC7 SP-PHONE CIRCUIT RXA,RXB TEL JACK GATE DATA COMMUNICATION ARRAY SPEAKER 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 HANDSET Ringer vol.
  • Page 41 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...

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