Panasonic KX-TC2000SNB Page 35 Service Manual Download | Manualshive

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- For example (one of part of data)

17. BLOCK DIAGRAM (BASE UNIT)

18. BLOCK DIAGRAM (HANDSET)

19. CIRCUIT OPERATION

19.1. 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)
*Refer to

EXPLANATION OF CPU DATA COMMUNICATION

().

- RF IC:IC1
- PLL Oscillator
- Detection
- Compress/ Expander

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Summary of Contents for KX-TC2000SNB

Page 1: ...ORDER NO KM40310268C3 Telephone Equipment KX TC2000SNB KX TC2000SNS Cordless Phone Black Version Silver Version for Singapore SPECIFICATIONS 1 ...

Page 2: ...2003 Panasonic Communications Co Ltd All rights reserved Unauthorized copying and distribution is a violation of law 1 ABOUT LEAD FREE SOLDER PbF Pb free Note 2 ...

Page 3: ...to heat too long PbF solder will tend to splash if it is heated much higher than its melting point approximately 1100 F 600 C If you must use Pb solder on a PCB manufactured using PbF solder remove as much of the original PbF solder as possible and be sure that any remaining is melted prior to applying the Pb solder When applying PbF solder to double layered boards please check the component side ...

Page 4: ...lnerable 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 Do not grasp IC or LSI pins with bare fingers 3 CAUTION Danger of explosion if battery is incorrectly replaced Replace only with the same or equivalent type recommended by t...

Page 5: ...4 2 Battery information 5 BATTERY REPLACEMENT 5 ...

Page 6: ...6 LOCATION OF CONTROLS 6 1 Base Unit 6 ...

Page 7: ...6 2 Handset 7 ...

Page 8: ...7 CONNECTION 8 ...

Page 9: ...LV16BXZ The AC adaptor must remain connected at all times It is normal for the adaptor to feel warm during use This unit will not function during a power failure If you want to connect a standard telephone on the same line use a T adaptor 9 ...

Page 10: ...8 OPERATIONS 8 1 Making Calls 10 ...

Page 11: ...8 2 Answering Calls 8 3 Storing Phone Numbers in Memory 11 ...

Page 12: ...8 4 Storing a Phone Number in the DIRECT Button 8 5 Dialing a Stored Number 12 ...

Page 13: ...8 6 Dialing the Stored Number in the DIRECT Button 8 7 Flash Button 13 ...

Page 14: ...9 DISASSEMBLY INSTRUCTIONS Show in Fig Procedure To remove Remove 1 1 Lower Cabinet Screws 2 6 12 A 4 2 1 2 Main P C Board Screw 2 6 6 B 1 Screw 2 6 12 C 1 Solder Main P C Board 14 ...

Page 15: ...dure To remove Remove 3 3 Rear Cabinet Battery compartment cover 4 3 4 Screws 2 6 12 D 2 5 3 4 5 Follow the procedure 6 3 4 5 6 Main P C Board Screw 2 6 12 E 1 Tape and solder Main P C Board 10 TROUBLESHOOTING GUIDE 15 ...

Page 16: ...Cross Reference Check Power Bell Reception Check Battery Charge Check Link Check Handset Transmission Check Handset Reception 10 1 Check Power 16 ...

Page 17: ...nce 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 10 2 Bell Reception 17 ...

Page 18: ...oss Reference Check Link Telephone Line Interface Note CPU IC2 Cross Reference Check Link Each measurement points are shown in CIRCUIT BOARD Base Unit or CIRCUIT BOARD Handset 10 3 Check Battery Charge 18 ...

Page 19: ...Cross Reference Charge Circuit Power Supply Circuit Note CPU IC2 Cross Reference Reset Circuit Handset Note CPU IC2 19 ...

Page 20: ... Each measurement points are shown in CIRCUIT BOARD Base Unit or CIRCUIT BOARD Handset 10 4 Check Link Refer to Adjustment Note CPU IC2 RF IC IC1 20 ...

Page 21: ... Each measurement points are shown in CIRCUIT BOARD Base Unit or CIRCUIT BOARD Handset Refer to Adjustment Note CPU IC2 RF IC IC1 21 ...

Page 22: ...dy The base unit dose not respond to a call from handset Make confirmation in item The base unit dose not transmit or the transmit frequency is off Make adjustments in item The transmit frequency is off Make adjustments in item The transmit power output is low and the operating distance between the base unit and the handset is less than normal Make adjustments in item The reception sensitivity of ...

Page 23: ...ent 11 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 11 2 How to change the channel Refer to Flow Solder Side View 11 3 Adjustment 23 ...

Page 24: ... Output Level Confirmation 3ch Talk 1 Apply 60dBm output from S S G modulation frequency 1KHz dev 3KHz 2 Confirm that the reading of AF VTVM is more than 200mV 600 load G Line Input Modulation Confirmation 3ch Talk 1 Input via loop simulator 1 0KHz 55mV measured at T R signal 2 Apply 60dBm output from S S G modulation frequency 1KHz dev 0KHz 3 Confirm so that the reading of FM Deviation Meter is 2...

Page 25: ...he base unit and the Handset is less than normal Make confirmation in item The reception sensitivity of the handset is low with noise Make confirmation item F Does not link between the base unit and the handset Make confirmation in item The reception level is high or low Make confirmation item H The transmit level is high or low Make confirmation in item Refer to Adjustment Unit condition 1 Remove...

Page 26: ...Note Refet to CIRCUIT BOARD Handset Signal Route 12 2 How to change the channel 12 3 Adjustment 26 ...

Page 27: ...on frequency 1KHz dev 0KHz 2 Confirm 2nd IF output so that the reading of RF VTVM is more than 15mV G Noise Squelch Confirmation 3ch Talk 1 Measure the SSG output level when the noise squelch changes from Low to High modulation frequency 1KHz dev 3kHz 2 Confirm that the SSG output level is 105dBm H Speaker Output Level Confirmation 3ch Talk 1 Apply 60dBm output from S S G modulation frequency 1KHz...

Page 28: ... more than 200mV Refer to Adjustment 13 2 Handset Item Value Refer to Remarks TX Frequency 49 860 MHz 100Hz ADJUSTMENTS HANDSET D at CH3 TX Power more than 2dBm ADJUSTMENTS HANDSET E at CH3 Antenna soldering point 50 Load Data Modulation factor 4 0 kHz 6 0 kHz ADJUSTMENTS HANDSET J at CH3 MIC Modulation factor 1 5 kHz dev 2 5 kHz dev ADJUSTMENTS HANDSET I at CH3 MIC terminal 2 4mV Input SP Output ...

Page 29: ...29 ...

Page 30: ...46 610 2 46 630 49 845 49 845 46 630 3 46 670 49 860 49 860 46 670 4 46 710 49 770 49 770 46 710 5 46 730 49 875 49 875 46 730 6 46 770 49 830 49 830 46 770 7 46 830 49 890 49 890 46 830 8 46 870 49 930 49 930 46 870 9 46 930 49 990 49 990 46 930 10 46 970 49 970 49 970 46 970 16 EXPLANATION OF CPU DATA COMMUNICATION 16 1 STAND BY TALK TALK STAND BY 30 ...

Page 31: ... The channel is changed if the noise interferes with the conversation 16 2 Ringing 31 ...

Page 32: ...16 3 Changing the Channel 32 ...

Page 33: ... 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 16 5 Waveform of DATA used for cordless transmission and reception 33 ...

Page 34: ...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 16 5 1 Handset 16 5 2 Base Unit 34 ...

Page 35: ...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 Refer to EXPLANATION OF CPU DATA COMMUNICATION RF IC IC1 PLL Oscillator Detection Compress Expander 35 ...

Page 36: ...supply to the CPU Digital Analog and RF IC from AC Adaptor 12V is shown in the diagram below The base unit power supply is DC12V The handset s power is supplied from 3 6V battery Nickel Cadmium battery which is installed in the handset Power supply for transmitter is turned on by a press of Talk key on the handset During the stand by mode the unit stops transmitting but receives the signal Also du...

Page 37: ...Fig 1 19 3 Reset Circuit Base Unit After power supply from AC adaptor the below circuit is for making reset signal Refer to the below waveform Fig 2 Fig 3 37 ...

Page 38: ...K2 L8 D6 Q14 Q24 L7 CHG Base CHG Handset L4 Q9 BATT 1 Battery BATT 2 L5 CHG Handset CHG Base L5 In this way the CPU on both unit detects the fact that the battery is charged The charge current is controlled by switching Q24 Q25 of Base Unit The battery is charged in normal mode for 15 hours and then in trickle mode 38 ...

Page 39: ...the circuit and the following signal flow is for the loop current T R160 L4 D2 RY1 R107 T7 R116 D5 L6 R161 R OFF HOOK ON HOOK Circuit Q6 is open RY1 disconnected as to cut the DC loop current and to cut the voice signal The unit is consequently in an on hook condition Pulse Dial Circuit CPU Hook turns RY1 ON OFF to make the pulse dialing via Q6 Make Break ratio when dialing with the Handset 40 60 ...

Page 40: ...NIT In the talk mode off hook condition the telephone line voice signal passes through D2 D3 D4 D5 RY1 Relay R107 and T7 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 ...

Page 41: ...riven by RF AMP then transmitted to the handset 19 7 2 Handset to Base Circuit Operation The voice signal from the handset user is picked up by the microphone MC1 voice signal passes through Compressor process to reduce noise as shown in BLOCK DIAGRAM HANDSET And the voice is FM modulated by VARICAP DV1 The carrier frequency is generated by TX VCO The transmitter power transistor Q4 is turned on o...

Page 42: ...DPX1 RF signal is amplified by RF AMP RF signal received from RF IC is mixed with RX local frequency at Mixer to generate 10 7 MHz wide band IF The reference frequency is generated by X1 10 245 MHz crystal VC1 is the reference frequency for adjustment The 10 7 MHz is mixed with reference and 455KHz narrow band IF is generated The demodulation audio signal is adjusted to the maximum at T1 RF IC is ...

Page 43: ...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 43 ...

Page 44: ...Shortly every detected blocks are inside of RF IC The detected voltage is as follows Battery Low Battery voltage V Batt 3 457V The CPU detects this level and Recharge battery LED starts flashing Power Down Battery voltage V Batt 3 0V The output of RF IC P DOWN becomes low level then CPU stops working to keep the data CH number ID Code etc 44 ...

Page 45: ...Fig 6 21 CPU DATA Base Unit 21 1 IC2 45 ...

Page 46: ...22 CPU DATA Handset 22 1 IC2 46 ...

Page 47: ...23 RF IC Base Unit and Handset 23 1 IC1 47 ...

Page 48: ... may be able to use a 60 to 80 Watt iron where someone with less experience could overheat and damage the PCB foil Flux Recommended Flux Specific Gravity 0 82 Type RMA lower residue non cleaning type Note See ABOUT LEAD FREE SOLDER PbF Pb free 24 2 Procedure 1 Tack the flat pack IC to the PCB by temporarily soldering two diagonally opposite pins in the correct positions on the PCB 48 ...

Page 49: ...iron along the tips of the pins while feeding enough solder to the tip so that it flows under the pins as they are heated 24 3 Modification Procedure of Bridge 1 Add a small amount of solder to the bridged pins 2 With a hot iron use a sweeping motion along the flat part of the pin to draw the solder from between the adjacent pads 25 CABINET AND ELECTRICAL PARTS LOCATION 49 ...

Page 50: ... BASE UNIT 26 CABINET AND ELECTRICAL PARTS LOCATION HANDET 50 ...

Page 51: ...27 ACCESSORIES AND PACKING MATERIALS 51 ...

Page 52: ... period of availability depends on the type of assembly and the laws governing parts and product retention At the end of this period the assembly will no longer be available 2 Important safety notice Components identified by the mark indicates special characteristics important for safety When replacing any of these components only use specified manufacture s parts 3 The S mark indicates service st...

Page 53: ... 4 PQQT22633Z CHARGE LABEL 5 PQBC10389Z1 LOCATOR BUTTON for KX TC2000SNB 5 PQBC10389Y2 LOCATOR BUTTON for KX TC2000SNS 6 PQKE10335Z1 HOOK LEVER for KX TC2000SNB 6 PQKE10335Z4 HOOK LEVER for KX TC2000SNS 7 PQKF10597Z1 LOWER CABINET for KX TC2000SNB 7 PQKF10597Z2 LOWER CABINET for KX TC2000SNS 8 PQKM10607Z1 UPPER CABINET for KX TC2000SNB 8 PQKM10607Y2 UPPER CABINET for KX TC2000SNS 9 PQSA10105Y ANTE...

Page 54: ...390401 TRANSISTOR SI Q25 SB1I0390408 TRANSISTOR SI Q401 SB1I0390408 TRANSISTOR SI Q402 SB0I0390601 TRANSISTOR SI Q403 SB1I0390408 TRANSISTOR SI DIODES D1 SC1GM414809 DIODE SI D2 BC2W0400401 DIODE SI D3 BC2W0400401 DIODE SI D4 BC2W0400401 DIODE SI D5 BC2W0400401 DIODE SI D6 BC2W0400401 DIODE SI D7 VA02700A401 DIODE SI D8 SC1GM414809 DIODE SI D11 SC1GM414809 DIODE SI D404 BC4579C7V50 DIODE SI DV1 BC...

Page 55: ... OSCILLATOR TRANSFORMERS T1 CLIP1200053 TRANSFORMER T2 CLIP1200037 TRANSFORMER T5 CLIP1200029 TRANSFORMER T6 CLIP1200045 TRANSFORMER T7 DG0P1200019 TRANSFORMER RESISTORS R1 ERJ3GEYJ470 47 R2 ERJ3GEYJ331 330 R3 ERJ3GEYJ153 15K R4 ERJ3GEYJ822 8 2K R5 ERJ3GEYJ103 10K R6 ERJ3GEYJ103 10K R7 ERJ3GEYJ334 330K R8 ERJ3GEYJ103 10K R10 ERJ3GEYJ393 39K R12 ERJ3GEYJ101 100 R13 ERJ3GEYJ513 51K R14 ERJ3GEYJ103 1...

Page 56: ...0 ERJ3GEYJ223 22K R62 ERJ3GEYJ104 100K R64 ERDS2TJ103 10K R68 ERJ3GEYJ104 100K R74 ERJ3GEY0R00 0 R75 ERJ3GEYJ103 10K R77 ERJ3GEYJ203 20K R78 ERJ3GEYJ393 39K R79 ERJ3GEYJ823 82K R80 ERJ3GEYJ222 2 2K R81 ERJ3GEYJ164 160K R82 ERJ3GEYJ103 10K R83 ERJ3GEYJ103 10K R84 ERJ3GEYJ562 5 6K R85 ERJ3GEYJ103 10K R86 ERJ3GEYJ473 47K R88 ERJ3GEYJ103 10K R89 ERJ3GEYJ103 10K R90 ERJ3GEYJ274 270K R94 ERJ3GEYJ104 100...

Page 57: ...05 1M R154 ERJ3GEYJ330 33 R155 ERJ3GEYJ470 47 R156 ERJ3GEYJ470 47 R159 ERJ3GEYJ104 100K R160 ERJ3GEY0R00 0 R161 ERJ3GEY0R00 0 R166 ERJ3GEYJ470 47 R167 ERJ3GEYJ103 10K R170 ERJ3GEYJ102 1K R172 ERDS2TJ103 10K R173 ERDS2TJ102 1K R174 ERDS2TJ102 1K R180 ERJ3GEYJ563 56K R183 ERJ3GEYJ106 10M R184 ERDS2TJ106 10M R195 ERDS2TJ472 4 7K R197 ERJ3GEYJ223 22K R198 ERJ3GEY0R00 0 R401 ERJ3GEYJ102 1K R402 ERJ3GEY...

Page 58: ...0 ECEA1HKA2R2 2 2 C31 ECUV1H103KBV 0 01 C32 ECEA1HKA2R2 2 2 C33 ECUV1H101JCV 100P C34 ECUV1H101JCV 100P C35 ECUV1H180JCV 18P C36 ECUV1H101JCV 100P C37 ECUV1H151JCV 150P C38 ECEA1CKA100 10 C39 ECUV1H103KBV 0 01 C40 ECUV1H270JCV 27P C41 ECEA1AKA470 47 C42 ECEA1HKA2R2 2 2 C43 ECUV1H103KBV 0 01 C44 ECUV1H472KBV 0 0047 C45 ECUV1C563KBV 0 056 C46 ECUV1H102KBV 0 001 C47 ECUV1H103KBV 0 01 C48 ECUV1C223KBV...

Page 59: ...3 ECUV1H562KBV 0 0056 C94 ECEA1AKA101 100 C96 ECUV1H103KBV 0 01 S C97 ECEA1HKA4R7 4 7 C98 ECEA1CKA220 22 C99 ECUV1H103KBV 0 01 C101 ECUV1H562KBV 0 0056 C102 ECEA1EKA221 220 C103 ECEA1AKA470 47 C104 ECUV1E104ZFV 0 1 C105 ECEA1AKA101 100 C106 ECUV1A105ZFV 1 C107 ECUV1H104ZFV 0 1 C108 ECUV1H104ZFV 0 1 C109 ECUV1H152KBV 0 0015 C134 ECUV1H103KBV 0 01 C135 ECUV1H103KBV 0 01 C136 ECUV1H020CCV 2P C401 ECU...

Page 60: ...FORM 110 CG2P1200021 SPEAKER 111 FE4T1200019 SPEAKER NET 112 FH2T1200012 BUZZER SHEET 113 PQHR10896Z LIGHT PIPE 28 2 2 MAIN P C BOARD PARTS Ref No Part No Part Name Description Remarks PCB100 PQWPC2000SNR MAIN P C BOARD ASS Y RTL ICS IC1 SA133122409 IC IC2 SA138780C03 IC TRANSISTORS Q1 BB230024104 TRANSISTOR SI Q2 SB1I0390408 TRANSISTOR SI Q4 SB0I0390601 TRANSISTOR SI Q5 SB1D0390401 TRANSISTOR SI ...

Page 61: ...0 TRANSFORMER T5 CLIP1200061 TRANSFORMER T6 CLIP1200088 TRANSFORMER RESISTORS R1 ERJ3GEYJ331 330 R2 ERJ3GEYJ153 15K R3 ERJ3GEYJ682 6 8K R5 ERJ3GEYJ103 10K R6 ERJ3GEYJ103 10K R8 ERJ3GEYJ224 220K R9 ERJ3GEYJ823 82K R10 ERJ3GEYJ331 330 R11 ERJ3GEYJ562 5 6K R12 ERJ3GEYJ224 220K R13 ERJ3GEYJ683 68K R14 ERJ3GEYJ153 15K R16 ERJ3GEYJ103 10K R17 ERJ3GEYJ682 6 8K R18 ERJ3GEYJ103 10K R19 ERJ3GEYJ472 4 7K R21...

Page 62: ...330 R62 ERJ3GEYJ222 2 2K R63 ERJ3GEYJ103 10K R64 ERJ3GEYJ103 10K R65 ERJ3GEYJ331 330 R66 ERJ3GEYJ222 2 2K R67 ERJ3GEYJ222 2 2K R68 ERJ3GEYJ103 10K R69 ERJ3GEYJ222 2 2K R70 ERJ3GEYJ222 2 2K R73 ERJ3GEYJ105 1M R74 ERJ3GEYJ104 100K R75 ERJ3GEYJ104 100K R76 ERJ3GEYJ104 100K R77 ERJ3GEYJ103 10K R78 ERJ3GEYJ104 100K R79 ERJ3GEYJ105 1M R80 ERJ3GEYJ105 1M R82 ERJ3GEY0R00 0 R83 ERJ3GEY0R00 0 R84 ERJ3GEYJ10...

Page 63: ...C16 ECUV1H473MDV 0 047 S C17 ECUV1H102KBV 0 001 C18 ECEA1HKA2R2 2 2 C21 ECUV1C223KBV 0 022 C22 ECUV1H103KBV 0 01 C23 ECUV1H102KBV 0 001 C24 ECUV1H120JCV 12P C26 ECUV1H103KBV 0 01 C27 ECUV1H104ZFV 0 1 C28 ECUV1A224KBV 0 22 C29 ECEA1HKA2R2 2 2 C30 ECUV1H104ZFV 0 1 C31 ECUV1H103KBV 0 01 C32 ECUV1H104ZFV 0 1 C33 ECUV1H104ZFV 0 1 C34 ECUV1H681JCV 680P S C35 ECUV1H151JCV 150P C36 ECUV1H180JCV 18P C37 EC...

Page 64: ...S C75 ECUV1H103KBV 0 01 C76 ECUV1H471JCV 470P S C77 ECUV1H471JCV 470P S C78 ECUV1H103KBV 0 01 C79 ECUV1H103KBV 0 01 C80 ECUV1H103KBV 0 01 C84 ECUV1H104ZFV 0 1 C85 ECUV1A105ZFV 1 C86 ECUV1H104ZFV 0 1 C88 ECUV1H104ZFV 0 1 C89 ECUV1H050CCV 5P C200 ECUV1H390JCV 39P C201 ECUV1H680JCV 68P C202 ECUV1H121JCV 120P OTHERS E101 CK15HC12G28 RINGER E102 CGAP1200019 MICROPHONE E103 PQJT10183Z CHARGE CONTACT S V...

Page 65: ...eplacing any of these components use only the manufacturer s specified parts 29 2 Handset SCHEMATIC DIAGRAM Handset 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 30 SCHEMATIC DIAGRAM Base Unit 30 1 Base Unit 30 2 RF Unit Base Unit 31 SCHEMATIC DIAGRAM H...

Page 66: ...33 2 Flow Solder Side View G KXTC2000SNB KXTC2000SNS 66 ...

Page 67: ...7 4 5 3 2 1 R1 47 R0603 C45 K563 C0603 T6 1160 IFT 7 C41 47UF 10V EC5 2 5 C53 J5P C0603 Q3 SOT 23 ECB R43 10K R0603 DV1 VCD2 C61 Z104 C0603 R31 47K R0603 R38 100K R0603 R36 220K R0603 R30 100K R0603 X1 10 245MHZ XTAL 10A C54 J1P C0603 C44 K472 C0603 C37 J150P C0603 R25 330K R0603 C24 Z223 C0603 R52 NA R0603 L10 0 68uH L5 C1 47UF 10V EC5 2 5 C35 J18P C0603 C11 Z474 C0603 C8 Z104 C0603 CF2 455E FILT...

Page 68: ...00mA CNT2P 2 5 1 2 Q7 SOT 23 R81 NA R0603 R73 1M R0603 R79 1M R0603 LED4 GREEN LED SQ LED3 GREEN LED SQ LED2 GREEN LED SQ R77 10K R0603 K2 FLASH 1 2 K18 2 1 2 K12 8 1 2 K9 0 1 2 K6 PAUSE 1 2 QFP 44P 32 31 30 29 27 26 25 24 1 2 3 4 5 6 7 8 9 10 11 28 33 12 13 14 15 16 17 18 19 20 21 22 23 34 35 36 37 38 39 40 41 42 43 44 P13 P12 P11 P10 P50 P67 P66 P65 P73 P72 P71 P70 P07 P06 P05 P04 P03 P02 P01 P5...

Page 69: ...3 T5 1432 IFT 7 4 5 3 2 1 C5 Z104 C0603 C34 K680P C0603 R19 4K7 R0603 R8 220K R0603 Q5 SOT 23 EBC C54 J10P C0603 C42 47U 10V EC5 2 5 T6 1434 IFT 7 C47 K6800p C0603 C61 Z104 C0603 DV1 VCD2 R44 39K R0603 C3 NC C0603 R35 47K R0603 R39 220K R0603 R41 120K R0603 X1 10 245MHZ XTAL 10A C56 J5P C0603 R34 220K R0603 C39 J150P C0603 R28 510K R0603 C46 NC C0603 C21 K223 C0603 C1 47UF 10V EC5 2 5 L6 0 68uH L2...

Page 70: ...4 C98 Q24 C95 T2 Q1 T6 T5 GND2 C1 X2 D404 J116 Q19 Q18 J156 L10 R152 R144 R113 R127 R128 J157 J139 J111 J181 J15 J124 J172 J102 J171 ZD9 J87 R184 C105 J173 J164 J145 J109 J1 J178 J174 J175 GND4 J176 J136 J177 J163 J170 J162 J168 J122 J112 J140 J126 C104 R172 R64 G7 C104 J160 C32 J134 CF1 J117 J113 J153 J95 J155 J166 L3 J115 J73 J159 C66 C30 C17 C42 DPX1 C20 SW1 Q15 KX TC2000SNB SNS CIRCUIT BOARD C...

Page 71: ...29 R203 C92 R119 R122 LED1 R197 R68 C107 1 1 1 Q401 Q402 R410 C135 R408 R87 R85 R81 R79 R78 C106 C88 R57 R97 R180 C73 R141 R134 R123 R201 R115 R140 R159 R133 R157 R126 R202 R77 R75 R84 R59 R82 Q7 Q16 Q11 R62 C64 C134 R6 R19 R20 R21 R143 R109 C69 R95 R104 R96 C70 R179 R18 R177 R178 C82 C74 C84 C75 R105 R100 C86 R166 R117 C120 R88 R32 C36 R26 C40 R80 C48 R15 C59 R56 R53 R42 C49 R175 C5 C14 R54 R51 R...

Page 72: ...30 R37 R86 R85 C72 C69 R71 R79 R69 R84 C70 R73 R81 R83 R80 R72 R103 C79 C33 C14 R29 R102 R23 R111 C74 R82 R78 R74 C73 R87 R60 R64 C84 R68 R65 R75 R53 R76 D1 L7 L4 L5 R36 Q4 R39 Q11 C86 ZD3 CHG CHG ZD1 BATT1 C48 Q9 C63 R59 R112 R62 R56 Q12 Q8 Q7 Q2 Q3 R54 R6 R8 C30 R28 C38 C23 C76 R21 C26 C27 R108 R110 C8 C75 C34 C32 R16 R18 R5 R42 C66 C65 C68 C67 R96 R101 RSSI Battery Low VDD CPU 40 CHG DET CPU 37...

Page 73: ...9 C10 C54 C17 R97 C200 C3 R43 R47 C4 C2 C6 C88 R200 R201 C203 C55 C44 C41 C61 R51 R44 R40 R49 R45 R41 C40 R24 C57 C36 C35 R26 C60 C50 C62 R52 C13 C21 R9 C7 DIRT AUTO LED6 LED3 LED4 LED1 LED5 LED2 R113 C201 C202 Q200 C49 TXPOWER 2nd Mix RF IC 36 TXGND TX VCO RX VCO IF IN RF IC 32 V Bat RF IC 33 KX TC2000SNB SNS CIRCUIT BOARD Flow Solder Side View Handset ...

Page 74: ...IC5 JK1 Marked ...

Page 75: ...IC2 DPX1 Marked ...

Page 76: ...74 C84 C75 R105 R100 C86 R166 R117 C120 R88 R32 C36 R26 C40 R80 C48 R15 C59 R56 R53 R42 C49 R175 C5 C14 R54 R51 R155 R139 R150 R148 R149 R86 R170 R44 C54 C61 R50 C11 R10 C4 C28 R3 Q21 R5 R4 R74 R167 R406 R1 R156 R93 C25 R7 C2 C8 C9 R22 C43 C45 C37 C34 C93 C79 C101 C121 C39 C125 R13 R8 C24 R12 C23 C29 C19 C27 R36 C52 C46 C133 C136 Q14 Q17 Q3 Q25 C110 Q4 Q5 Q6 Q20 Q13 Q2 C51 R154 R40 R52 R45 R38 ZD5...

Page 77: ...R77 R12 R70 C45 C46 R30 R37 R86 R85 C72 C69 R71 R79 R69 R84 C70 R73 R81 R83 R80 R72 R103 C79 C33 C14 R29 R102 R23 R111 C74 R82 R78 R74 C73 R87 R60 R64 C84 R68 R65 R75 R53 R76 D1 L7 L4 L5 R36 Q4 R39 Q11 C86 ZD3 CHG CHG ZD1 BATT1 C48 Q9 C63 R59 R112 R62 R56 Q12 Q8 Q7 Q2 Q3 R54 R6 R8 C30 R28 C38 C23 C76 R21 C26 C27 R108 R110 C8 C75 C34 C32 R16 R18 R5 R42 C66 C65 C68 C67 R96 R101 150Ω AF Volt Meter H ...

Page 78: ...R43 R47 C4 C2 C6 C88 R200 R201 C203 C55 C44 C41 C61 R51 R44 R40 R49 R45 R41 C40 R24 C57 C36 C35 R26 C60 C50 C62 R52 C13 C21 R9 C7 DIRT AUTO LED6 LED3 LED4 LED1 LED5 LED2 R113 C201 C202 Q200 C49 TXPOWER TXGND 50Ω FM Deviation Meter Audio Analyzer Frequency Counter RF Millivolt Meter I J D E SSG 46 670MHz DC Volt Meter B TX VCO RF Volt Meter F DC Power Supply DC Volt Meter C RX VCO ...

Page 79: ... Q18 Q19 RF AMP Q3 Q4 T5 TX VCO Q5 T6 DV1 PLL OSC RF FILTER CF1 CF2 10 7MHz 455kHz ANTENNA LED Q21 LED1 RESET DTC Q401 CHARGE DTC Q7 EXP 17 14 TEL LINE AMP Q11 IC3 TEL LINE POWER SUPPLY RESET CHARGE CHARGE TERMINAL CHARGE CONTROL Q14 Q17 Q24 Q25 AC DOWN DTC Q402 Q403 DC IN 12V 150mA AC Adaptor COM DC 5V CONTROL LINE AUDIO SIGNAL TEL LINE SW T7 DIODE BRIDGE D2 D3 D4 D5 H S KX TC2000SNB SNS BLOCK DI...

Page 80: ... POWER CONTROL Q4 RF AMP Q5 T5 Q200 TX VCO Q6 T6 DV1 PLL OSC RF FILTER CF1 CF2 ANTENNA LED Q8 LED 1 4 RESET Q11 DIODE BRIDGE D1 CHARGE DTC IC2 PING37 BUZZER Q7 BZ1 Q12 KEY BOARD EXP SPEAKER REC1 MIC MC1 CHARGE TERMINAL DIODE BRIDGE Q9 COM DC 3 9V CONTROL LINE AUDIO SIGNAL Base RX LOOP VC1 BATTERY 3 9V KX TC2000SNB SNS BLOCK DIAGRAM HANDSET ...

Page 81: ...UF 10V EC10 5 Q21 SOT 23 C402 K224 R403 100K C83 NA C0603 ZD3 4V7 D 362 ZD5 4V7 D 362 R111 180 R0603 R167 10K R0603 Q11 SOT 23 R133 39 R0603 R115 56K R0603 R87 NA R0603 R122 680 R0603 R126 470 R0603 C90 K123 C0603 C85 K563 C0603 R129 NA R0603 R123 22K C92 Z104 C0603 R141 5K1 R0603 R119 82K R0603 R143 510K R0603 R148 10K R0603 R149 1K8 R0603 D7 2700V MPC28 28 C97 4U7 50V EC5 5 R150 510K R0603 C101 ...

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