2.4 ghz digital cordless
answering system
2.4 ghz digital cordless
answering system with two handsets (56 pages)
Summary of Contents for Panasonic KX-TG2583B
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ORDER NO. KM40101757C7 Telephone Equipment KX-TG2583B / KX-TG2583S / KX-TG2583W 2.4GHz Cordless Answering System Black Version Silver Version Pearl White Version (for U.S.A.) (for Latin America) SPECIFICATIONS...
2001 Kyushu Matsushita Electric Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law. 1. LOCATION OF CONTROLS 1.1. Base Unit...
5.5. Caller ID Service This unit is compatible with a Caller ID service offered by your telephone company. If you subscribe to a Caller ID service, the calling party’s information will be shown on the handset and base unit displays after the first ring. The unit can record information of up to 50 different callers in the Caller List.
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numbers from the Caller List into the directory. If you subscribe to both Caller ID and Call Waiting services, when a second call is received while talking, the new caller’s name and phone number will be displayed. 5.5.1. How caller information is displayed when a call is received 5.5.2.
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7.4. Replace the RF unit For HS Follow this procedure below when replacing HS RF unit. 1. Remove speaker cables of LCD unit on HS main board. And remove LCD unit. 2. Remove solder on six legs of RF unit. 3.
6. Solder six RF legs. 7. Put LCD unit and solder speaker wire. NOTE: Speaker wire has polarity. (Component View) (Solder Side View) 8. TROUBLESHOOTING GUIDE...
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NOTE: - CP/CM: Refer to Base Unit Reference Drawing. - TP-BL: Refer to Handset Reference Drawing. 8.8. Check Link...
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8.9. Check the RF Unit 8.9.1. Finding out the Defective Unit Prepare HS Test Fixture and BU Test Fixture. Place the HS Test Fixture 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 BU Test Fixture, then confirm that they are linked.
Normal mode. This test simulates the handset is at very large distance from the base unit and the TX signal from handset to base is very small. Procedure: First place handset Test Fixture on base under test to charge (exchange security code);...
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Switch to control normal mode and test modes on this BU Test Fixture. Test Fixture has two mode. 1. TEST mode: (RF Power Low mode) The switch of Test Fixture changed with TEST mode side. Then Test Fixture is in TEST mode. 2.
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8.9.3.1. Base Unit Test Fixture Reference Drawing As for TEST fixture, only the switch as shown in a figure is connected to the mass-production set. Note: SW : ON (Handset : Nomal) 10m more : No Link 5m less : Link 8.9.4.
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(*1) See RF Unit Reference Drawing (Base Unit and Handset). (*2) Base unit RF only, refer to Check Table for RF Block. 8.9.5. Check Table for RF Block...
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No. Item BU (Base unit) (*1) HS (Handset) (*1) Link confirmation 1. The switch of “HS Test Fixture” is 1. The switch of “BU TEST Fixture” Normal changed to normal mode side, and is changed to “Normal mode side”, charge of "HS Test Fixture". is charge of "BU Test Fixture".
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(*1) BU: Base Unit, HS: Handset. (*2) See Base Unit Reference Drawing. (*3) See Handset Reference Drawing. (*4) See RF Unit Reference Drawing (Base Unit and Handset). (*5) See TEST MODE AND ADJUSTMENT. 8.9.6. RF-DSP Interface Signal Wave Form...
(*1) See Base Unit Reference Drawing. (*2) Special check method for Base Unit individually. 9.2. Key Check Mode (*1) See Base Unit Reference Drawing. 9.3. Test Mode Flow Chart for Handset...
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(*1) See Handset Reference Drawing. (*2) Special check method for Handset individually. 9.4. Adjustment Battery Low Detector Voltage After replacing handset’s DSP (IC201) and EEPROM, Re-writing Battery Low voltage to EEPROM is required. Following Test mode flow chart (Refer to Test Mode Flow Chart for Handset), DC power supply and Battery connector are required in this adjustment.
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NOTE: Refer to Handset Reference Drawing for connection of DC power source and voltmeter. 9.5. Base Unit Reference Drawing 9.6. Handset Reference Drawing 9.7. Frequency Table 10. DESCRIPTION 10.1. Frequency The frequency range of 2.4015 GHz ~ 2.4705 GHz is used. Transmitting and receiving channel between base unit and handset is same frequency.
10.2.1. TDD Frame Format The TDD frame is 2mS in length, and is composed of two symmetrical 960 S TX and RX subframes. Each subframe contains 96 bits of 10 S duration, with 40 S guard times between both TX and RX subframes. Each subframe consists of the following five fields: - A 12-bit Preamble field - An 8-bit Data Channel field...
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10.4. Signal Flowchart in the Whole System Reception CN101 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 Q461, then led to DSP (IC501).
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10.5. EXPLANATION OF DSP DATA COMMUNICATION 10.5.1. Calling...
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10.5.2. To Terminate Communication 10.5.3. Ringing 10.5.4. ID CHANGE...
13.3. Auto Disconnect Circuit Function: This circuit is used to detect the fact that another telephone connected to the same line is OFF- HOOK while the unit is in a receiving status or OGM transmitting status. Circuit Operation: The voltage pin 40 of IC501 is monitored. If a parallel-connected telephone is put into an OFF HOOK status, the presence/absence of a parallel connection is determined when the voltage changes by 0.2V or more.
13.4. Power Supply Circuit Function: Power from the AC adaptor passes through a regulating consisting of IC301. Circuit Operation: IC301 is a regulated power supply. The voltage at point A is regulated to 4.5 V by IC301. The voltage at point B is dropped by D509 to 4.1 V. The voltage at point C is dropped by D521 to 3.8 V.
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13.7. Line Receiving Signal The audio signal from line passes through Q131 and Q461 to pin38 and 39 of IC501(DSP). IC501 modulates this input audio signal to output to the RF unit.
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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.
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and plural message format. The plural message format allows to transmit the name and data code information in addition to the time and telephone number data. Call Waiting Calling Identity Delivery on Call Waiting (CIDCW) is a CLASS service that allows a customer, while off-hook on an existing call, to receive information about a calling party on a waited call.
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13.9. Parallel Connection Detection 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.
13.10. DSP (Digital Speech/Signal Processing) Circuit General Description: (IC501, IC571) 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 IC501. The host processor provides activation and control of all that functions, such as speech Recording, Playback, Tone detecting and Line monitoring.
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- DTMF Detection The DTMF detection is implemented by the DSP system in software. The DTMF detection is performed during Record, Playback, and Line Monitoring modes of operation. - Synthesized Voice The DSP implements synthesized Voice, utilizing the built in speech detector and an FLASH MEMORY (IC571), which stored the vocabulary.
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13.13. ICM Recording Circuit Circuit Operation: Telephone Line Q131 C463 R448 C442 R464 C441 pin 38 and 39 of IC501. 13.14. ICM Play Circuit...
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Circuit Operation: pins 32 and 33 of IC501 Speaker. 13.15. Telephone Line Interface Circuit Operation: - ANSWER 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: L101...
telephone company requirements. 13.16. Intercom Mode 1. When the base unit LOCATOR/INTERCOM button is pressed, a call monitor signal (intercom sound) is output from pins 32 and 33 of IC501. Thus a monitor tone is heard from the speaker. 2. “Paging” is displayed on LCD. This status is called “Intercom stand-by”.
13.18. Antenna Diversity Antenna Diversity improve conversation quality. This means to reduce some noise during conversation. RF unit send LQA (Link Quality Alarm) signal to IC751 when increase Error Bit’s. Then IC751 control RF switch IC761 to switch another Antenna. Antenna selection control by IC501 is available only in test mode.
the voltage of CHARGE1 and CHARGE2 terminals, then the handset makes ID code setting (*) with the base unit. 15.3. Ringer Circuit If the ringer volume is set to low and an alarm tone is output from 39 pin, IC201 DSP and input to Q209.
15.5. Reception Signal Circuit The received signal from the base unit is output from pins 33 (SPN) and 32 (SPP) of IC201 (DSP) as the voice signal. SPN is the inverse output of SPP, and the speaker is driven by SPN and SPP. CN203 is the headphone jack.
19. HOW TO REPLACE FLAT PACKAGE IC 19.1. Preparation - SOLDER...
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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. Temperature of Copper Rod 662 ± 50°F (350 ± 10°C) (An expert may handle between 60 W to 80 W iron, but beginner might damage foil by overheating.) - Flux HI115 Specific gravity 0.863...
19.3. Modification Procedure of Bridge 1. Re-solder slightly on bridged portion. 2. Remove remained solder along pins employing soldering iron as shown in below figure. 20. CABINET AND ELECTRICAL PARTS (Base Unit)
22. ACCESSORIES AND PACKING MATERIALS 23. REPLACEMENT PARTS LIST This replacement parts list are U.S.A. version only. 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.
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4. RESISTORS & CAPACITORS Unless otherwise specified; All resistors are in ohms ( ) K=1000 , M=1000k All capacitors are in MICRO FARADS ( F) P= *Type & Wattage of Resistor 23.1. Base Unit 23.1.1. CABINET AND ELECTRICAL PARTS...
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LCD HOLDER PQHR10849Z SPEAKER HOLDER PQHS10475Z LCD TAPE PQHS10476Z DOUBLE SIDE TAPE PQZHTG2583BH CHARGE CASE ASS'Y (for KX-TG2583B) (for KX-TG2583S) PQZHTG2583WH CHARGE CASE ASS'Y (for KX-TG2583W) PQKE10333Z1 HOOK LEVER (for KX-TG2583B) (for KX-TG2583S) PQKE10333Z2 HOOK LEVER (for KX-TG2583W) PQYM10112Z1 UPPER CABINET (for KX-TG2583B)
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Ref. No. Part No. Part Name & Description Remarks PCB1 PQWP1G2583BH MAIN P.C.BOARD ASS'Y (RTL) (ICS) IC301 PQVIXCF4502P IC331 PQVIPS3432UT IC501 C2HBBJ000006 IC571 PQWITG2583BH IC IC741 PQVITC7S08FU IC751 PQVITC7W74U IC761 PQVISPM3204T (TRANSISTORS) Q101 2SD1819A TRANSISTOR(SI) Q115 2SD1819A TRANSISTOR(SI) Q121 2SA1625 TRANSISTOR(SI) Q122 PQVT2N6517CA TRANSISTOR(SI)
Part Name & Description Remarks PQJA10075Z TEL CORD PQKE10127Z1 BELT CLIP (for KX-TG2583B) (for KX-TG2583S) PQKE10127Z2 BELT CLIP (for KX-TG2583W) PQKL10038Z3 WALL MOUNT ADAPTOR (for KX-TG2583B) (for KX-TG2583S) S PQKL10038Y1 WALL MOUNT ADAPTOR (for KX-TG2583W) PQLV10Z AC ADAPTOR PQPD10440Y PQQT22229Z TAM LABEL PQQW12360Z...