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Panasonic KX-TC1201BXB Manual

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ORDER NO. KM40201787C3
Telephone Equipment
KX-TC1201BXB / KX-TC1201BXW / KX-TC1201BXS / KX-
TC1201BXF
Cordless Phone
Black Version
White Version
Silver Version
Blue Version
(for Asia, Middle Near East and Other areas)
1

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Summary of Contents for Panasonic KX-TC1201BXB

  • Page 1 ORDER NO. KM40201787C3 Telephone Equipment KX-TC1201BXB / KX-TC1201BXW / KX-TC1201BXS / KX- TC1201BXF Cordless Phone Black Version White Version Silver Version Blue Version (for Asia, Middle Near East and Other areas)
  • Page 2 SPECIFICATIONS 2002 Kyushu Matsushita Electric Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.
  • Page 3 1. BATTERY 1.1. Recharge 1.2. Battery information...

  • Page 4: Battery Replacement

    2. BATTERY REPLACEMENT 3. LOCATION OF CONTROLS 3.1. Base Unit...
  • Page 5 3.2. Handset...
  • Page 6 4. CONNECTION...
  • Page 7 - USE ONLY WITH Panasonic AC ADAPTOR PQLV16BXZ. - 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.

  • Page 8: Adding Another Phone

    4.1. Adding Another Phone This unit will not function during a power failue. To connect a standard telephone on the same line, use a T-adaptor.
  • Page 9 5. OPERATIONS 5.1. Making Calls 5.2. Answering Calls...
  • Page 10 5.3. Storing Phone Numbers in Memory 5.4. Storing a Phone Number in the DIRECT Button...
  • Page 11 5.5. Dialing a Stored Number 5.6. Dialing a Stored Number in the DIRECT Button...
  • Page 12 5.7. FLASH Button 6. DISASSEMBLY INSTRUCTIONS...
  • Page 13 Show in Fig. To remove. Remove. Lower Cabinet Screws (2.6 × 12)....... (A) × 4 Main P.C. Board Screws (2.6 × 6)......(B) × 1 Screws (2.6 × 6)......(C) × 2 Screws (2.6 × 12)......(D) × 1 Main P.C. Board.

  • Page 14: Troubleshooting Guide

    Show in Fig. To remove. Remove. Rear Cabinet Battery compartment cover. Screws (2.6 × 12)......(E) × 2 Main P. C. Board Screw (2.6 × 12)......(F) × 1 Tape and solder. Main P. C. Board. 7. TROUBLESHOOTING GUIDE...

  • Page 15: Check Power

    Cross Reference: Check Power Bell Reception Check Battery Charge Check Link Check Handset Transmission Check Handset Reception 7.1. Check Power...
  • Page 16 Cross Reference: Reset Circuit (Base Unit) Power Supply Circuit Note: CPU: IC2 Cross Reference: Charge Circuit Note: CPU: IC2 *: Each measurement points are shown in CIRCUIT BOARD (Base Unit) () or CIRCUIT BOARD (Handset) 7.2. Bell Reception...

  • Page 17: Check Battery Charge

    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.
  • Page 18 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)

  • Page 19: Check Link

    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)
  • Page 20 **: Refer to Adjustment Note: CPU: IC2 RF IC: IC1 *: Each measurement points are shown in CIRCUIT BOARD (Base Unit) () or CIRCUIT BOARD (Handset)

  • Page 21: Check Handset Transmission

    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.
  • Page 22 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...

  • Page 23: Adjustment Standard (Base Unit)

    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...
  • Page 24 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.
  • Page 25 Note: Refet to CIRCUIT BOARD (Handset) Signal Route 9.2. How to change the channel 9.3. Adjustment...

  • Page 26: Adjustment Standard (Handset)

    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.

  • Page 27: How To Check The Handset Speaker

    Note: (A) - (I) is refered to ADJUSTMENTS (HANDSET) 10. RF SPECIFICATION 10.1. Base Unit Item Value Refer to -.* Remarks TX Frequency 43.820 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 2.7 kHz~3.5 kHz...

  • Page 29: Frequency Table (Mhz)

    12. FREQUENCY TABLE (MHz) BASE UNIT PORTABLE UNIT Channel Transmit Frequency Receive Frequency Transmit Frequency Receive Frequency 43.720 49.670 49.670 43.720 43.740 49.845 49.845 43.740 43.820 49.860 49.860 43.820 43.840 49.770 49.770 43.840 43.920 49.875 49.875 43.920 43.960 49.830 49.830 43.960 44.120 49.890...
  • Page 30 *: The channel is changed if the noise interferes with the conversation. 13.2. Ringing...

  • Page 31: Changing The Channel

    13.3. Changing the Channel...

  • Page 32: Ports For Transmitting And Receiving Of Data

    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...
  • Page 33 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.
  • Page 34 - 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)

  • Page 35: Power Supply Circuit

    - 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;...
  • Page 36 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...

  • Page 37: Charge Circuit

    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.
  • Page 38 JK1 (3): T R144 IC3D (12,13 R148 IC2 (24) [BELL] 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.
  • Page 39 The other party's voice signal is coupled with T7 and amplified by Q11 and led to IC3-B (OP 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).

  • Page 40: Signal Route

    by RF amplifier Q1, then 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.

  • Page 41: Circuit Operation (Handset)

    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...

  • Page 42: Battery Low / Power Down Detector

    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) <...

  • Page 43: Cpu Data (Base Unit)

    Fig. 6 18. CPU DATA (Base Unit) 18.1. IC2...

  • Page 44: Cpu Data (Handset)

    19. CPU DATA (Handset) 19.1. IC2...

  • Page 45: How To Replace Flat Package Ic

    20. HOW TO REPLACE FLAT PACKAGE IC 20.1. Preparation - SOLDER...
  • Page 46 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.

  • Page 47: Cabinet And Electrical Parts Location

    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)
  • Page 48 22. CABINET AND ELECTRICAL PARTS LOCATION (HANDET)

  • Page 49: Accessories And Packing Materials

    23. ACCESSORIES AND PACKING MATERIALS...

  • Page 50: Replacement Parts List

    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.
  • Page 51 24.1.1. CABINET AND ELECTRICAL PARTS Ref. No. Part No. Part Name & Description Remarks PQJT10180Z CHARGE TERMINAL PQHR10882Z LED LENS PQGT14960Z NAME LABEL (for KX-TC1201BXB) PQGT14881Z NAME LABEL (for KX-TC1201BXW) PQGT14880Z NAME LABEL (for KX-TC1201BXS) PQGT14878Z NAME LABEL (for KX-TC1201BXF) PQQT22294Z CHARGE LABEL PQBC10349Z1...
  • Page 52 Ref. No. Part No. Part Name & Description Remarks PCB1 PQWPC1201BXH MAIN P.C.BOARD ASS'Y (RTL) (ICS) SA133122409 SA138740551 SA110032403 (TRANSISTORS) BB230024104 TRANSISTOR(SI) SB110390405 TRANSISTOR(SI) SB110390405 TRANSISTOR(SI) SB110390405 TRANSISTOR(SI) SB110390405 TRANSISTOR(SI) SB110390405 TRANSISTOR(SI) SB110390405 TRANSISTOR(SI) SB110390405 TRANSISTOR(SI) SB110390405 TRANSISTOR(SI) SB110390405 TRANSISTOR(SI) SB010390608 TRANSISTOR(SI) SB110390405...
  • Page 53 Ref. No. Part No. Part Name & Description Remarks BDFL0455E02 CERAMIC FILTER (CRYSTAL OSCILLATORS) BD1R1024504 CRYSTAL OSCILLATOR BDRR0800005 CRYSTAL OSCILLATOR (TRANSFORMERS) CLIP1200053 TRANSFORMER CLIP1200037 TRANSFORMER CLIP1200029 TRANSFORMER CLIP1200045 TRANSFORMER DG0P1200019 TRANSFORMER CLIP1200029 TRANSFORMER (FUSES) DC0T0602606 FUSE DC0T0602606 FUSE DC0T0602606 FUSE (OTHERS) NCP1200X010 ANTENNA...
  • Page 54 Ref. No. Part No. Part Name & Description Remarks ERJ3GEYJ223 ERJ3GEYJ563 ERJ3GEYJ103 ERJ3GEYJ103 ERJ3GEYJ104 100k ERJ3GEYJ474 470k ERJ3GEYJ222 2.2k ERJ3GEYJ223 ERJ3GEYJ753 ERJ3GEYJ822 8.2k ERJ3GEYJ152 1.5k ERJ3GEYJ225 2.2M ERJ3GEYJ153 ERJ3GEYJ153 ERJ3GEYJ681 ERJ3GEYJ222 2.2k ERJ3GEYJ224 220k ERJ3GEYJ511 ERJ3GEYJ104 100k ERJ3GEYJ223 ERJ3GEYJ224 220k ERJ3GEYJ104 100k ERDS2TJ103...
  • Page 55 Ref. No. Part No. Part Name & Description Remarks R109 ERJ3GEYJ334 330k R110 ERJ3GEYJ562 5.6k R111 ERJ3GEYJ681 R114 ERJ3GEYJ223 R115 ERJ3GEYJ563 R116 ERJ3GEY0R00 R118 ERDS1TJ181 R119 ERJ3GEYJ823 R120 ERJ3GEY0R00 R122 ERJ3GEYJ391 R123 ERJ3GEYJ183 R126 ERJ3GEYJ471 R129 ERJ3GEYJ113 R131 ERJ3GEYJ104 100k R132 ERJ3GEYJ222 2.2k...
  • Page 56 Ref. No. Part No. Part Name & Description Remarks ECUV1H471JCV 470p ECUV1H473MDV 0.047 ECUV1H102KBV 0.001 ECEA1HU2R2 ECUV1H270JCV ECEA1CKA100 ECUV1C473KBV 0.047 ECUV1H102KBV 0.001 ECEA1HKA2R2 ECUV1H103KBV 0.01 ECUV1H103KBV 0.01 ECUV1E223KBV 0.022 ECUV1H153KBV 0.015 ECUV1H100DCV 10p ECUV1H103KBV 0.01 ECUV1H153KBV 0.015 ECUV1C104KBV 0.1 ECEA1HKA2R2 ECUV1H103KBV 0.01 ECEA1HU2R2 ECUV1H101JCV...
  • Page 57 Ref. No. Part No. Part Name & Description Remarks ECUV1H270JCV ECEA1HKAR47 0.47 ECUV1H271JCV 270p ECUV1H223KBV 0.022 ECUV1C104ZFV ECUV1H223KBV 0.022 ECUV1C104ZFV ECUV1C104ZFV ECUV1H223KBV 0.022 CATZ681KC68 680p ECUV1H151JCV 150p ECEA1AU471 ECUV1C104ZFV CATZ681KC68 680p ECUV1C104ZFV ECUV1H223KBV 0.022 ECUV1C683KBV 0.068 ECUV1C683KBV 0.068 ECUV1C104KBV 0.1 ECUV1H562KBV 0.0056 ECEA1CK101 CB114714205...
  • Page 58 Ref. No. Part No. Part Name & Description Remarks PQJT10182Z CHARGE TERMINAL PQGT14886Z NAME LABEL (for KX-TC1201BXB) PQGT14876Z NAME LABEL (for KX-TC1201BXW) PQGT14875Z NAME LABEL (for KX-TC1201BXS) PQGT14873Z NAME LABEL (for KX-TC1201BXF) PQKF10535Y1 REAR CABINET (for KX-TC1201BXB) PQKF10535Y5 REAR CABINET (for KX-TC1201BXW)
  • Page 59 Ref. No. Part No. Part Name & Description Remarks (LEDS) LED1 SC5E0192115 DIODE(SI) LED2 SC5E0192115 DIODE(SI) LED3 SC5E0192115 DIODE(SI) LED4 SC5E0192115 DIODE(SI) LED5 SC5E0192115 DIODE(SI) LED6 SC5E0192123 DIODE(SI) (COILS) PQLQZKR68J COIL PQLQZM120K COIL PQLQZM120K COIL PQLQZK120J COIL PQLQZK120J COIL SH4Y0220J12 COIL SH590121N75 COIL...
  • Page 60 Ref. No. Part No. Part Name & Description Remarks ERJ3GEYJ363 ERJ3GEYJ393 ERJ3GEYJ563 ERJ3GEYJ472 4.7k ERJ3GEYJ913 ERJ3GEYJ103 ERJ3GEYJ184 180k ERJ3GEYJ821 ERJ3GEY0R00 ERJ3GEYJ224 220k ERJ3GEYJ473 ERJ3GEYJ202 ERJ3GEYJ102 ERJ3GEYJ100 ERJ3GEYJ224 220k ERJ3GEYJ220 ERJ3GEYJ124 120k ERJ3GEYJ223 ERJ3GEYJ104 100k ERJ3GEYJ273 ERJ3GEYJ104 100k ERJ3GEYJ474 470k ERJ3GEYJ222 2.2k ERJ3GEYJ223 ERJ3GEYJ473...
  • Page 61 Ref. No. Part No. Part Name & Description Remarks ERJ3GEY0R00 ERJ3GEY0R00 ERJ3GEYJ105 ERJ3GEYJ102 ERJ3GEYJ104 100k ERJ3GEYJ104 100k ERJ3GEY0R00 ERJ3GEYJ103 ERJ3GEYJ334 330k ERJ3GEYJ393 ERJ3GEYJ470 ERJ3GEYJ154 150k ERJ3GEYJ472 4.7k R101 ERJ3GEYJ470 R102 ERJ3GEYJ153 R103 ERJ3GEYJ105 R106 ERJ3GEYJ820 R107 ERJ3GEYJ222 2.2k R108 ERJ3GEYJ102 R109 ERJ3GEYJ102 R110...
  • Page 62 Ref. No. Part No. Part Name & Description Remarks ECUV1H470JCV ECEA1CKA100 ECUV1H151JCV 150p ECUV1H151JCV 150p ECUV1H103KBV 0.01 ECEA1EK470 ECEA1HKA2R2 ECUV1C105KB ECUV1C105KB ECUV1H103KBV 0.01 ECUV1H333KBV 0.033 ECEA1EK470 ECUV1H223KBV 0.022 ECUV1H103KBV 0.01 ECUV1H103KBV 0.01 ECUV1H223KBV 0.022 ECUV1H050CCV 5p ECUV1H103KBV 0.01 ECUV1H1R5CCV 1.5 ECUV1H150JCV ECUV1H103KBV 0.01 ECUV1H270JCV...

  • Page 63: For Schematic Diagram

    Ref. No. Part No. Part Name & Description Remarks PQJA10075Z TEL CORD PQLV16BXZ AC ADAPTOR PQQX13166Z INSTRUCTION BOOK PQPP10090Z POLY BAG (for Base Unit) PQPP10091Z POLY BAG (for Handset) PQPP10092Z POLY BAG PQPK13588Z GIFT BOX 25. FOR SCHEMATIC DIAGRAM 25.1. Base Unit (SCHEMATIC DIAGRAM (Base Unit)) 1.

  • Page 64: Circuit Board (Handset)

    28.2. Flow Solder Side View 29. CIRCUIT BOARD (Handset) 29.1. Component View 29.2. Flow Solder Side View H.M / KXTC1201BXB / KXTC1201BXW / KXTC1201BXS / KXTC1201BXF...
  • Page 65 BATTERY CONTROL 3.9V DIODE BRIDGE TX VCO RF AMP Q6, T6, DV1 Q5, T5 DIODE CHARGE RESET POWER -DATA DATA BRIDGE TERMINAL CONTROL -CLK DATA CHARGE IC2 PING37 Q8, LED 1-4 BUZZER KEY BOARD Q7, BZ1 KX-TC1201BXB/BXW/BXS/BXF BLOCK DIAGRAM (HANDSET)
  • Page 66 3.9V to 0V ROW1 While charging TALK AUTO K22 DIRT C0603 ROW0 5V6 0.5W C0603 10V 0.5W D\362 SOT-23 ZD7.5 R111 120 OHM SOT-23 COIL SMD 0805 0603 C0603 VBAT CHG- L7.5 3.9V BATT1 3V6/300mA CNT2P\2.5 KX-TC1201BXB/BXW/BXS/BXF SCHEMATIC DIAGRAM (Handset)
  • Page 67 R0603 100K 220U/10V C114 EC5/2.5 C0603 R0603 R107 R0603 1434 470K R0603 R0603 R0603 C0603 C0603 C0603 C0603 1.5P R0603 C0603 C0603 IFT\7 R0603 R0603 SOT-23\EBC R0603 SOT-23\EBC C0603 VCD2 C0603 C0603 C0603 R0603 KX-TC1201BXB/BXW/BXS/BXF SCHEMATIC DIAGRAM (Handset (RF Unit))
  • Page 68 FM Deviation Audio Meter Analyzer Confirmation of VCO voltage Frequency Counter DC Volt Meter RF Volt (A), (B) Meter Volt Meter 50Ω RX-VCO TX-VCO T.P ( CH change at test mode) TXPOWER TXGND DC12V or AC adaptor AF OSC Loop SIMULATOR AF Volt Meter (F) Oscilloscope...
  • Page 69 KX-TC1201BXB/BXW/BXS/BXF CIRCUIT BOARD (Component View (Base Unit))
  • Page 70 (CPU: 26) DET OUT (RF IC: 27) (CPU: 27) +12V RX DATA (CPU: 10) RX DATA (RF IC: 23) CHG DET RING (CPU: 18) TX DATA (CPU: 17) RING DET (CPU: 24) KX-TC1201BXB/BXW/BXS/BXF CIRCUIT BOARD (Flow Solder Side View (Base Unit))
  • Page 71 150Ω AF Volt Meter (H) 47µF (A) Battery Low Generator Oscilloscope (G) Noise Squelch...
  • Page 72 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...
  • Page 73 CHG DET VDD (CPU: 40) TX DATA TX DATA (CPU: 37) (DV1) (A) Battery Low (CPU: 36) (G) Noise Squelch KX-TC1201BXB/BXW/BXS/BXF CIRCUIT BOARD (Component View (Handset))
  • Page 74 V Bat IF IN (RF IC: 33) (RF IC: 32) TX VCO 2nd Mix (RF IC: 36) TXPOWER TXGND KX-TC1201BXB/BXW/BXS/BXF CIRCUIT BOARD (Flow Solder Side View (Handset))
  • Page 75 Q18, Q19 AC DOWN RF AMP TX VCO Q3,Q4, T5 Q5, T6, DV1 RESET -DATA DATA -CLK CHARGE -STB CONTROL Q14, Q17 DATA DC 12V DC 5V Q21, LED1 CHARGE CHARGE CONTROL LINE TERMINAL AUDIO SIGNAL KX-TC1201BXB/BXW/BXS/BXF BLOCK DIAGRAM (BASE UNIT)
  • Page 76 R0603 RING DET EC5\5 200mA IMPEDENCE 470UF\25V R149 EC10\5 C100 22uF\16V ZD7.5 SOT-23 R0603 ZD7.5 R150 R151 C0603 EC5\2.5 510K 6K8/1W Jumper R0603 1U/250V R12.5 JACK DC L7.5 MPC25\22 R152 VCPU C101 C0603 20M 1/4W KX-TC1201BXB/BXW/BXS/BXF SCHEMATIC DIAGRAM (Base Unit)
  • Page 77 EC5/5 C0603 C0603 R0603 R0603 470K R0603 SOT-23\ECB R0603 C0603 C0603 R0603 C0603 C0603 C0603 SOT-23 1160 R0603 R0603 C0603 SOT-23\ECB R0603 R0603 C0603 IFT\7 C0603 C0603 R0603 R0603 VCD2 R0603 R0603 C0603 KX-TC1201BXB/BXW/BXS/BXF SCHEMATIC DIAGRAM (Base Unit (RF Unit))

This manual is also suitable for:

Kx-tc1201bxwKx-tc1201bxsKxtc1201bxf

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