on the label affixed to the back of the unit. 1.2. SAFETY PRECAUTIONS 1. Before servicing, unplug the power cord to prevent an electric shock. 2. When replacing parts, use only the manufacturer's recommended components of safety. 3. Check the condition of the power cord. Replace if wear or damage is evident.
1.4. FOR SERVICE TECHNICIANS ICs and LSIs are vulnerable to static electricity. When repairing, the following precautions will help prevent recurring malfunctions. 1. Cover plastic parts boxes with aluminum foil. 2. Ground the soldering irons. 3. Use a conductive mat on worktable. 4.
1.6. BATTERY CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to following caution: Disposal of lithium batteries should be performed by permitted, professional disposal firms knowledgeable in state government federal and local hazardous materials and hazardous waste transportation and disposal requirements.
to account for their ultimate disposition. This is a good practice for all types of commercial or industrial waste. Recommend Type Number: CR2354(BATT) 1.7. NOTE For details of installation, refer to the Installation Manual. 2. SPECIFICATIONS 2.1. GENERAL DESCRIPTION 1. Capacity CO lines 12 max.
11. Weight 7.8 kg (17.2 lb) 2.2. CHARACTERISTICS 1. Station Loop Limit KX-T7135, KX-T7130, KX-T7020, KX- 40 ohms T7030, KX-T7050, KX-T7055 Single Line Telephone 600 ohms including set Doorphone 20 ohms 2. Minimum Leak 15,000 ohms Resistance 3. Maximum Number of 1 (KX-T7135, KX-T7130, KX-T7020, KX-T7030, KX-T7050, KX-T7055 or standard Station Instruments per telephone)
5. DISASSEMBLY INSTRUCTIONS (KX-TA1232) 5.1. HOW TO REMOVE THE TOP COVER Procedure 5.1. 1. Loosen the two Screws (A). 2. Open the Top Cover. 3. Slide the Top Cover in the direction of the arrow when removing it.
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5.2. HOW TO REMOVE THE INSIDE COVER Procedure 5.1. 5.2. 1. Remove the eight Screws (A). 2. Remove the Inside Cover. 5.3. HOW TO REMOVE THE CPU AND CO BOARDS Procedure 5.1. 5.2. 5.3.
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(CPU Board) 1. Remove the five Screws (A). 2. Remove the three Connectors. 3. Remove the CPU Board. (CO Board) 1. Remove the five Screws (B). 2. Remove the one Connectors. 3. Remove the CO Board. 5.4. HOW TO REMOVE THE EXTENSION BOARD Procedure 5.1.
5.5. HOW TO REMOVE THE MOTHER BOARD Procedure 5.1. 5.2. 5.3. 5.4. 5.5. 1. Remove the seven Screws (A). 2. Remove the one Connector. 3. Remove the Mother Board.
5.6. HOW TO REMOVE THE POWER SUPPLY UNIT Procedure 5.1. 5.2. 5.6. 1. Remove the four Screws (A). 2. Remove the three Screws (B). 3. Remove the two Connector. 4. Remove the Power Supply Unit.
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5.7. HOW TO REMOVE THE POWER SUPPLY BOARD Procedure 5.1. 5.2. 5.6. 5.7. 1. Remove the seven Screws (A). 2. Remove the Shild Cover. 3. Remove the four Screws (B). 4. Remove the Power Supply Board.
6. GENERAL DESCRIPTION 6.1. OUTLINE This equipment is a telephone exchange on the premise constructed with basic (KX-TA1232). Basic contains controlling section and time-sharing switch section. The features of this system are as follows: (1) Advanced hybrid system By one type of a board, this system covers the single line telephones (SLT), the analog type of the proprietary telephone (APT) at the extension (EXT) ports.
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EXPANSION CO CARD can be installed another 1 unit. 6.3. ARTICLES Unit structure and function are outlined in this section. CLASS UNIT NAME PRODUCT NO. OTHERS BASIC POWER SUPPLY KX-TA1232 BOARD MOTHER BOARD KX-TA1232 CPU BOARD KX-TA1232 CPU, TSW, CONF CO BOARD (BASIC) KX-TA1232...
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6.4. CONTENTS This equipment has mainly 3 types of cabinets and 2 types of optional cabinets. Each cabinet relates with each board about installation as follows.
7. FUNCTION OF EACH CARD 7.1. BASIC (1) POWER SUPPLY UNIT Power supply board generates three DC voltage of +15, -15 and +5.3 V from the AC power source, and supplies them to the system.
Function Description Generating DC voltage Generates +15, -15 and +5.3 V from AC power or the batteries. Capacities: - +5.3 V, 3.0 A - +15 V, 4.7 A - -15 V, 4.5 A Bell Amp It increases the bell signal from CPU CARD, and sends to the EXT CARD. (2) CPU BOARD CPU BOARD covers the CPU function which controls the system and TSW (time sw.) function which exchanges the PCM lines as the main functions.
Function Description Ring detection function Detecting the bell signals from the stations. Catch of CO lines function Catching the CO lines by making the DC current loop. End of call function CPU detection Dial pulse transmission Out-put the dial pulse to the lines by switching the DC loop on and off. function 2-4 wires convert 2 w.
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(7) SMDR BOARD SMDR BOARD leads signal of RS-232C out with DIN 25 pin connector. 7.2. RESOURCE OF OPTION (1) EXPANSION CO UNIT (KX-TA123280) EXPANSION CO UNIT is an optical unit for extending the CO lines from 8 up to 12 lines. the differences between this unit and the basic one are follows;...
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Function Description Sending OGM Sending OGM (Out Going Message) stored in RAM to the CO line. 2 types OGM for 32 sec. each are stored. DTMF signal detection After sending OGM to CO line, detecting the in-coming signal of DTMF. Call between CO lines Two call paths for call between CO lines.
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Rectifier and Smoothing Section The input signal is full-wave rectified by bridge diode D400, and smoothed by C408, C409, resulting in a DC current. TH401 and TH402 are power thermistors. Switching Section The switching section is a basic RCC type which uses the IC400 included power MOS.FET. D401, R403 and C412 are for resetting the excitation energy stored in T400 while T400 is OFF.
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since feed back is not done on the primary side from +15 V line. So, the chopper regulator, IC450 and the circuit around it stabilize +15 V. The following is the roles of main surrounding circuit. D452, C454, C455: Rectifier and smoothing circuit L450: For preventing resonance R456, C459: For compensating phase R457: For detecting an electric current...
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(2) CPU BOARD CPU BOARD consists of the following: CPU Circuit TSW Circuit Conference Circuit Tone Generator Circuit Clock Generator Circuit Clock Circuit Hold Tone Circuit Battery Back-Up Circuit Voltage Watching Circuit RS-232C interface Circuit Level Signal Generator Circuit CPU Circuit Circuit Operation:...
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16 bit CPU (system clock = 12 MHz) (IC1) with 68HC000 core CPU 3 Serial I/O ports 16 bit Paralleled I/O ports 3 level Interrupt Controller 16 bit Timer 3 ch. Address Decoder DTACK Controller 8M bit EPROM (Program) (IC20, 21) 4M bit SRAM (IC24, 25) Address Buffer...
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Composition: Time Switch IC (IC3) Circuit Operation: TSW (Time division Switch) Circuit exchanges totally 256 call channels, which is organized into the PCM highways of 8 lines, and one of the lines is composed of 32 channels. This circuit is integrated into one chip of LSI (IC3), and is controlled by the CPU (IC1) to present the data on the up highways of HWR0 through 7 to the down highways of HWS0 through 7.The uses of each highways are shown below.
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same as Conference Circuit Circuit Operation: Tone Generator Circuit presents 4 kinds of the call progress tone and 2 channels of the DTMF tone to DHW0 of the down highway. This circuit consists of the Gate Array (IC2) and ROM (IC19) which are common to the conference circuit.
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Composition: CODEC IC (IC7, 8) IC12, T4, T5, etc. Circuit Operation: The hold tone circuit is a circuit which presents the hold tone for the system. The tone sources are one system of the internal hold tone (as a local option) and two systems of the external hold tone.
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Voltage Watching Circuit Composition: Reset IC (IC13) Q6, 7 etc. Circuit Operation: Voltage Watching Circuit is a security circuit which detects the ration of +5 V and +15 V. If +5 V is derated, this circuit resets the system. If +15 V is derated, this circuit presents "L" to I/O port in CPU.
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(c) Pulse Dial Transmission Circuit (d) 2 W~4 W Lines Conversion Circuit (e) A/D, D/A Conversion Circuit Call Interface Circuit consists eight lines corresponding to each call line. (Transfer circuit at power failure are four lines.) Circuit Operation: (a) Bell Signal Detection Circuit When CO line is idle, EXRLY pin of IC 111 is low, photocoupler PC101, PC102 are OFF.
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(e) A/D, D/A Conversion Circuit This circuit is for conversion between 4-line analog signals and the PCM digital signals. CODEC(IC102) has a power down function at no operation and a /A law switching over function, and are controlled through the parallel I/O port. Parallel I/O Circuit Composition: Gate Array...
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(4)BASIC EXT BOARD BASIC EXT BOARD consists of the following: Analog Telephone Circuit DTMF Receiver Circuit AIT Data Communication Circuit HDLC Controller APT Data Transmission And Reception Circuit Parallel /O Port Timing Signal Generation Circuit Analog Telephone Circuit Analog Telephone Circuit is composed of the following circuit, this consists of eight circuit corresponding to each extension line.
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voltage is ±15V. With the telephone off-hook, a DC loop is formed, and current is supplied to the telephone. This current is limited to about 30 mA by D204, D205, R205, D206, D207 and R208 respectively. (+15 V)- R206-R205-Q203-RLY202 (b-c)-L204-RLY200 (m-c)-Telephone-RLY200 (c-m)-L205-RLY202 (c-b)- Q204-R208-R209-(-15V) (b) Hook Detection Circuit Hook Detection Circuit is a circuit which detects On-hook or OFF-hook of SLT when the bell...
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When power fails or 117 pin of IC211 becomes low, collector of Q221 is high, RLY200 turns OFF and make the path. DTMF Receiver Circuit Composition: DTMF Receiver IC (IC215, IC216) R1 Analog Switches (IC217, IC218) Circuit Operation: DTMF Receiver Circuit is a circuit for receiving the DTMF dials presented by STL and APT. This circuit is composed of the 8 1 Analog Switches (IC217, 218) and the DTMF Receiver IC (IC215, 216).
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for 8 ms. This circuit is composed of one IC (IC213). APT Data Transmission and Reception Circuit Composition: Q201, Q208, IC203, T201 etc. Circuit Operation: The circuit functions the wave shaping and the level conversion between the date line from the telephone terminal and the Gate Array (IC211), and supplies the current to the terminal through the data line.
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8.2. RESOURCE OF OPTION (1) EXPANSION CO UNIT (KX-TA123280) The circuit on this unit has the following differences from the BASIC CO BOARD. Others are the same as the basic one. - Number of CO lines are four. - One line paths for the transfer at power failure. (2) EXPANSION EXT UNIT (KX-TA123270) The circuit on this unit has the following differences from the BASIC EXE BOARD.
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(3) DOOR-PHONE UNIT (KX-TA123260) DOOR-PHONE UNIT consists of the following: Door-Phone Interface Circuit Door Opener Circuit Door-Phone Interface Circuit Door-Phone Interface Circuit is a circuit which functions the interface between the door-phone and the PCM highway, and is composed of the following circuits. Composition: (a) Circuit for detection whether the door-phone is connected or not.
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function. Door Opener Circuit This is the relay circuit which controls the Door Opener connected externally. The control is made through the parallel I/O port (IC4). Four of this circuit are installed on a card. Composition: IC4, Q7, RLY1, etc. Circuit Operation: When CPU (IC1) on CPU BOARD make I/O port (IC4) high, transistor (Q7) controls the relay (RLY1) ON.
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OGM (Out Going Message) Memory Circuit DTMF Repeat Circuit End of Call Detection Circuit Highway Control Circuit Timing Signal Generator Circuit CPU Circuit Composition: 68C03 8 bit CPU (IC1) ROM 256 kbite (IC2) SRAM 8 kbit (IC3) IC7, IC25, IC27, IC32, IC36, IC46 Circuit Operation: This circuit is a circuit which controls the DISA CARD according to the program in the ROM (IC2) by the CPU (IC1).
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RAM (IC48, IC49) into the PCM CODEC data, and presents to UHW 0 of the up highway. Two of this circuit are installed on one card, and one of them has the OGM recording function as well. In another words, it takes in the PCM CODEC data on DHW 6 of the down highway through the AGC circuit and converts to the ADPCM codes.
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Composition: PI0 (IC4) IC24, IC26, IC28, IC30, etc. Circuit Operation: This circuit is a circuit which detects the end of call at CO-CO call. It converts whether the voice exits or not into the logic level (IC24, 26, 28, 30), then presents it to CPU (IC1) through P10 (IC4).
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(7) CALLER ID CARD (KX-TA123293) CALLER ID CARD consists of the following: MODEM Signal Receiver Circuit Serial/Parallel Converter Circuit Over voltage Protector Circuit MODEM Signal Receiver Circuit Composition: IC301, IC302, IC303, IC304, etc. Circuit Operation This circuit converts the MODEM signals sent between the bell signals into the serial signals. The baud rate of the MODEM signals is 300 bps.
Four of this circuit are installed corresponding to each CO line. Two of this circuit are incorporated in one IC. Over Voltage Protector Circuit Composition: D301~316 etc. Circuit Operation: This circuit protects the MODEM receiver from the bell signal on the CO line. 9.
Test Items Test Method Check Items DTMF G/R Test 1) Enter "M1 1" from the data 1) Make sure response is terminal. 2) Make sure response is 2) Enter "M1 2" from the data terminal. Extension Board Test 1) Enter "M3 1" from the data 1) Make sure response is terminal.
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. If you do not fill with large quantities of solder as in step 1 the P.C.board pattern may be removed.
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. Solder using the specified solder, in the direction of the arrow, by sliding the soldering iron.
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13. EXTENSION CABLE FOR SERVICING (KX-TA1232)
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.
18. CABINET AND ELECTRICAL PARTS LOCATION (KX-TA123260)
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19. ACCESSORIES AND PACKING MATERIALS (KX- TA123260)
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20. REPLACEMENT PARTS LIST (KX-TA123260) Notes: 1. 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 is dependent on the type of assembly, and in accordance with the laws governing parts and product retention.
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important for safety. When replacing any of these components, use only manufacture's specified 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 ( ).
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21.2. HOW TO REMOVE THE LOWER CABINET Procedure 21.1. 21.2. 1. Remove the five Screws (B). 2. Remove the Lower Cabinet.
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21.3. HOW TO REMOVE THE MAIN BOARD Procedure 21.1. 21.2. 21.3. 1. Remove the Screws (C). 2. Remove the Main Board.
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21.4. HOW TO REMOVE THE SUB BOARD Procedure 21.1. 21.2. 21.3. 21.4. 1. Remove the two Screws (D). 2. Remove the Sub Board.
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22. CABINET AND ELECTRICAL PARTS LOCATION (KX-TA123270)
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23. ACCESSORIES AND PACKING MATERIALS (KX- TA123270)
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24. REPLACEMENT PARTS LIST (KX-TA123270) Notes: 1. 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 is dependent on the type of assembly, and in accordance with the laws governing parts and product retention.
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Unless otherwise specified; All resistors are in ohms ( ). k=1000 , M=1000k All capacitors are in MICRO FARADS ( F). p= *Type & Wattage of Resistor 24.1. CABINET AND ELECTRICAL PARTS Ref. No. Part No. Part Name & Description Remarks PQKV10007Z1 COVER...
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25. DISASSEMBLY INSTRUCTION (KX-TA123280) 25.1. HOW TO REMOVE THE COVER Procedure 25.1. 1. Remove the Screws (A). 2. Slide the Cover in the direction of the arrow when removing it. 25.2. HOW TO REMOVE THE LOWER CABINET Procedure 25.1. 25.2. 1.
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25.3. HOW TO REMOVE THE MAIN BOARD Procedure 25.1. 25.2. 25.3. 1. Remove the Main Board.
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26. CABINET AND ELECTRICAL PARTS LOCATION (KX-TA123280)
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27. ACCESSORIES AND PACKING MATERIALS (KX- TA123280)
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28. REPLACEMENT PARTS LIST (KX-TA123280) Notes: 1. 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 is dependent on the type of assembly, and in accordance with the laws governing parts and product retention.
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All resistors are in ohms ( ). k=1000 , M=1000k All capacitors are in MICRO FARADS ( F). p= *Type & Wattage of Resistor 28.1. CABINET AND ELECTRICAL PARTS Ref. No. Part No. Part Name & Description Remarks PQKM10029U1 CABINET BODY PQHD10011Z SCREW PQUS141Z...
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Ref. No. Part No. Part Name & Description Remarks T101B ETA14Y184AYM TRANSFORMER T101C ETA14Y184AYM TRANSFORMER T101D ETA14Y184AYM TRANSFORMER 29. REPLACEMENT PARTS LIST (KX-TA123291) Notes: 1. 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.
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Ref. No. Part No. Part Name & Description Remarks (ICS) PQVIMS7524 IC10 PQVIMS7524 IC13 PQVILMF90CCN IC IC14 PQVILMF90CCN IC IC17 PSVIMC14548V IC20 PSVIMC14548V IC21 PSVIMC14548V IC24 PQVINJM2901M IC IC28 PQVINJM4558M IC IC30 PQVINJM4558M IC IC37 PQVISN7L38S IC42 PQVISN7L125S IC53 PSVIISD2500D IC54 PSVIISD2500D IC61...
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30. REPLACEMENT PARTS LIST (KX-TA123293) Notes: 1. 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 is dependent on the type of assembly, and in accordance with the laws governing parts and product retention.
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UWRN IORN CSROMN (C42) No Mounted No Mounted No Mounted No Mounted LWRN 22000P IORN No Mounted No Mounted (C43) No Mounted No Mounted UWRN IORN C102 22000P 220K 22000P 0.022 No Mounted No Mounted LWRN IORN 0.022 No Mounted SRSTN 22000P 0.022...