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ORDER NO. KM40111737C3 Telephone Equipment KX-TC1206TWB / KX-TC1206TWS / KX-TC1206TWF / KX- TC1206TWP Cordless Phone Black Version Silver Version Blue Version Pink Version (for Taiwan) SPECIFICATIONS...
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2001 Kyushu Matsushita Electric Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law. 1. BATTERY 1.1. Recharge...
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- USE ONLY WITH Panasonic AC ADAPTOR PQLV16TWZ. - The AC adaptor must remain connected at all times. (It is normal for the adaptor to feel warm during use.) - When more than one unit is used, the units may interfere with each other.
Show in Fig. Procedure To remove. Remove. Rear Cabinet Battery compartment cover. 3, 4 Screws (2.6 × 12)......(C) × 2 3, 4, 5 Main P. C. Board Screw (2.6 × 12)......(D) × 1 Tape and solder. Main P. C. Board. 7.
Cross Reference: Check Link Telephone Line Interface Note: CPU: IC2 Cross Reference: Check Link - In case of the following suffix, the bell might not stop even after key was pressed to answer the call. In this case, the Base Unit and the Handset might have been mixed up at the customer side.
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Cross Reference: Charge Circuit Power Supply Circuit Note: CPU: IC2 Cross Reference: Reset Circuit (Handset) Note: CPU: IC2 *: Each measurement points are shown in CIRCUIT BOARD (Base Unit) () or CIRCUIT BOARD (Handset)
7.4. Check Link **: Refer to Adjustment Note: CPU: IC2 RF IC: IC1 *: Each measurement points are shown in CIRCUIT BOARD (Base Unit) () or CIRCUIT BOARD (Handset)
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**: Refer to Adjustment Note: CPU: IC2 RF IC: IC1 *: Each measurement points are shown in CIRCUIT BOARD (Base Unit) () or CIRCUIT BOARD...
(Handset) 7.5. Check Handset Transmission Cross Reference: Signal Route 7.6. Check Handset Reception Cross Reference: Signal Route *: Each measurement points are shown in CIRCUIT BOARD (Base Unit) () or CIRCUIT BOARD (Handset) 8. ADJUSTMENTS (BASE UNIT) If your unit have below symptoms, adjust or confirm each item using remedy column from the table.
8.1. Test Mode Flow Chart (Base Unit) The operation-flow of Test mode and main check items are shown below. Note: **: Refer to the above table. 8.2. How to change the channel *: Refer to Flow Solder Side View 8.3. Adjustment...
Adjustment Test *Procedure Adjustment Items Mode Point RX VCO Confirm so that the reading of the Digital Voltmeter is 1.4V ± 0.6V. Talk Confirmation TX VCO Adjust T6 so that the reading of the Digital Voltmeter is 2.0V ± 0.1V. Talk Adjustment TX Frequency...
table. Symptom Remedy* The movement of Battery Low Indicator is wrong. Make confirmation in item The base unit does not respond to a call from the handset. Make adjustments in item The base unit does not transmit or the transmit frequency is off. Make adjustments in item The transmit frequency is off.
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Note: Refet to CIRCUIT BOARD (Handset) Signal Route 9.2. How to change the channel 9.3. Adjustment...
Adjustment Test Procedure Adjustment Items Mode Point 1. Adjust the power supply voltage to DC3.60V,and confirm so that the reading of Battery Low oscillosope is High. Talk Confirmation 2. Adjust that power supply voltage to DC 3.40V, and confirm so that the reading of oscilloscope is Low.
(Flow Solder Side View) Note: (A) - (I) is refered to ADJUSTMENTS (HANDSET) 10. RF SPECIFICATION 10.1. Base Unit Item Value Refer to -.* Remarks TX Frequency 46.670 MHz ± 0.1kHz ADJUSTMENTS (BASE UNIT) (C) at CH3 TX Power 0.25mW ± 0.1mW (3CH) ADJUSTMENTS (BASE UNIT) (D) at CH3 Line Modulation factor...
13.4. Ports for transmitting and receiving of data Handset: transmitting (TX) ... 36 Pin receiving (RX) ... 4 Pin Base Unit: transmitting (TX) ... 17 Pin receiving (RX) ... 10 Pin 13.5. Waveform of DATA used for cordless transmission and reception...
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The DATA which is transmitted from the Handset to the Base Unit is combination of DATA 0, DATA 1, PSEUD. The DATA which is transmitted from the Base Unit to the Handset is combination of DATA 0, DATA 1, PSEUD. 13.5.1.
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- For example (one of part of data) 14. BLOCK DIAGRAM (BASE UNIT) 15. BLOCK DIAGRAM (HANDSET) 16. CIRCUIT OPERATION 16.1. Outline Base unit consists of the following ICs as shown in BLOCK DIAGRAM. - CPU:IC2 - Controlling the whole system - Forming/analyzing all data signals (ACK, CMD signal etc.*) - All interfaces (ex: LED, KEY, SP, Mic, LCD, Detector Circuit (Charge / Power Down)
- first/ second mixer - Amplifier for transmission and reception - Additionally, - Power Supply Circuit - Reset Circuit - Charge Circuit - Telephone Line Interface Circuit Handset consist of the following ICs as shown in BLOCK DIAGRAM. - CPU: IC2 - All data signals (forming/analyzing ACK or CMD signal*) - All interfaces (ex;...
detects AC Adaptor power failure and maintains the unit security code. Fig. 1 16.3. Reset Circuit (Base Unit) After power supply from AC adaptor, the VREG is input for making reset signal. Refer to the below waveform. Fig. 2 Fig. 3...
16.4. Charge Circuit Circuit Operation: When charging the handset on the base unit, the charge current is as follows; DC (JK2) CHG+(Base) [CHG+(Handset) BATT(1)..Battery..BATT(2) CHG-(Handset)] CHG+(Base) In this way, the CPU on both unit detects the fact that the battery is charged. The charge current is controlled by switching Q701 of Handset.
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JK1 (2): R R120 R152 When the CPU (DSP) detects a ring signal and press the TALK Key on the handset. Q6 turns on and then RY1 turns on, thus providing an off-hook condition (active DC current flow through the circuit) and the following signal flow is for the loop current.
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Amplifier device). And the signal goes through the compressor of RF IC, it is output to transmitter circuit. The signal of the data sent to the handset is applied in the anode of the variable capacitor diode (VARICAP : DV1). The capacitor of VARICAP is changing in accordance with the voice signal from telephone line interface or TX DATA signal from CPU.
it is converted to10.7 MHz and 455 KHz Intermediate by RF IC. The demodulated audio signal is output from RF IC (DET OUT) and passed through "Expander" process to reduce noise, then voice signal is led to LINE AMP. The signal is passed through TELEPHONE INTERFACE and Tel-line.
17. CIRCUIT OPERATION (HANDSET) 17.1. Reset Circuit (Handset) The power of handset is supplied by battery. Whenever the battery is recharged or inserted, the impulse at CHG+ becomes Reset signal through Q11, and sent to CPU. Fig. 4 Fig. 5...
17.2. Battery Low / Power Down Detector Circuit Operation: “Battery Low” and “Power Down” are detected by RF IC which check the voltage from battery. Shortly, every detected blocks are inside of RF IC. The detected voltage is as follows; - Battery Low Battery voltage : V(Batt) <...
20. HOW TO REPLACE FLAT PACKAGE IC 20.1. 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.
20.3. 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. 21. CABINET AND ELECTRICAL PARTS LOCATION (BASE UNIT)
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22. CABINET AND ELECTRICAL PARTS LOCATION (HANDET)
24. REPLACEMENT PARTS LIST 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.
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24.1.1. CABINET AND ELECTRICAL PARTS Ref. No. Part No. Part Name & Description Remarks PQJT10180Z CHARGE TERMINAL PQHR10882Z LED LENS PQGT15030Z NAME LABEL (for KX-TC1206TWB) PQGT15015Z NAME LABEL (for KX-TC1206TWS) PQGT15016Z NAME LABEL (for KX-TC1206TWF) PQGT15248Z NAME LABEL (for KX-TC1206TWP) PQQT22331Z CHARGE LABEL PQBC10349Z1...
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25. FOR SCHEMATIC DIAGRAM 25.1. Base Unit (SCHEMATIC DIAGRAM (Base Unit)) 1. DC voltage measurements are taken with an oscilloscope or a tester with a ground. 2. The schematic diagrams and circuit board may be modified at any time with the development of new technology. Important Safety Notice: Components identified by mark have special characteristics important...
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FM Deviation Audio Meter Analyzer Confirmation of VCO voltage Frequency Counter DC Volt Meter RF Volt Meter (A), (B) Volt Meter 50Ω RX-VCO TX-VCO T.P ( CH change at test mode) TXPOWER TXGND R171 R175 R153 C56 C57 DC12V or AC adaptor R125 R158...
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T.P ( CH change at test mode) TX DATA 2nd Mix IF IN TXPOWER TXGND RX-VCO (RF IC: 36) (RF IC: 32) R98: for Changing the channel (DV1) TX-VCO R171 XOUT R175 (CPU: 1) R153 C56 C57 VDD (CPU: 28) R125 R158 CHG LD...
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150Ω AF Volt Meter (H) 47µF (A) Battery Low Generator Oscilloscope (G) Noise Squelch...
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43.820MHz RF Millivolt Meter 50Ω Frequency Counter Audio (I), (J) FM Deviation Analyzer Meter Volt Meter TXGND TXPOWER TX VCO DC Volt Meter RX VCO DC Volt Meter DC Power Supply...
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CHG DET VDD (CPU: 40) TX DATA TX DATA (CPU: 37) (DV1) (A) Battery Low (CPU: 36) (G) Noise Squelch...
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V Bat IF IN (RF IC: 33) (RF IC: 32) TX VCO 2nd Mix (RF IC: 36) TXPOWER TXGND...
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ANTENNA 10.7MHz 455kHz TELEPHONE LINE RF FILTER CF1, CF2 INTERFACE RX VCO Q13, Q14, IC3 L10, C26 DUPLEXER DPX1 RF IC RF AMP TB31224F DIODE MIX 1/2 Q1, T2 LINE LINE BRIDGE RX LOOP TEL LINE D2, D3, D4, D5 Q11, IC3 -DATA PLL OSC...