Panasonic KX-TC2000NZB Service Manual
Panasonic cordless phone service manual
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- Operating instructions (2 pages) ,
- Operating instructions manual (9 pages)
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Summary of Contents for Panasonic KX-TC2000NZB
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Page 1: Cordless Phone
Telephone Equipment KX-TC2000NZB KX-TC2000NZW KX-TC2000NZF Cordless Phone Black Version White Version Blue Version (for New Zealand) © 2003 Panasonic Communications Co., Ltd. All rights reserved. Unauthorized distribution is a violation of law. ORDER NO. KM40308180C3 copying... -
Page 2: Table Of Contents
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF CONTENTS 1 ABOUT LEAD FREE SOLDER (PbF: Pb free) 1.1. Suggested PbF Solder 1.2. How to recognize that Pb Free solder is used 2 FOR SERVICE TECHNICIANS 3 CAUTION 4 BATTERY 4.1. Recharge 4.2. Battery information... - Page 3 24 HOW TO REPLACE FLAT PACKAGE IC 24.1. Preparation 24.2. Procedure 24.3. Modification Procedure of Bridge KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 25 CABINET AND ELECTRICAL PARTS LOCATION (BASE UNIT) 26 CABINET AND ELECTRICAL PARTS LOCATION (HANDET) 54 27 ACCESSORIES AND PACKING MATERIALS 28 REPLACEMENT PARTS LIST 28.1.
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Page 4: About Lead Free Solder (Pbf: Pb Free)
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 1 ABOUT LEAD FREE SOLDER (PbF: Pb free) Note: In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder that contains lead. We will use PbF solder when discussing the lead free solder used in our manufacturing process which is made from Tin (Sn), Silver (Ag), and Copper (Cu). -
Page 5: How To Recognize That Pb Free Solder Is Used
Note: The location of the "PbF" marks is subject to change without notice. 1.2.2. Handset PCB Note: The location of the "PbF" marks is subject to change without notice. Marked (Component View) Marked (Component View) KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF... -
Page 6: For Service Technicians
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 2 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. -
Page 7: Battery
4 BATTERY 4.1. Recharge 4.2. Battery information KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF... -
Page 8: Battery Replacement
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 5 BATTERY REPLACEMENT... -
Page 9: Location Of Controls
6 LOCATION OF CONTROLS 6.1. Base Unit 6.2. Handset KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF... -
Page 10: Connection
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 7 CONNECTION USE ONLY WITH Panasonic AC ADAPTOR PQLV16AL. 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. - Page 11 KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF For Service Hint:...
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Page 12: Operations
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 8 OPERATIONS 8.1. Making Calls 8.2. Answering Calls... -
Page 13: Storing Phone Numbers In Memory
8.3. Storing Phone Numbers in Memory 8.4. Storing a Phone Number in the DIRECT Button KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF... -
Page 14: Dialing A Stored Number
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 8.5. Dialing a Stored Number 8.6. Dialing the Stored Number in the DIRECT Button... -
Page 15: Recall Button
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 8.7. Recall Button... -
Page 16: Disassembly Instructions
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 9 DISASSEMBLY INSTRUCTIONS Show in Fig. Procedure 1, 2 To remove. Lower Cabinet Screws (2.6 × 12)..(A) × 4 Main P.C. Board Screw (2.6 × 6)..(B) × 1 Screw (2.6 × 12)..(C) × 1 Solder Main P.C. - Page 17 3, 4, 5, 6 Main P. C. Board To remove. Battery compartment cover. Screws (2.6 × 12)..(D) × 2 Follow the procedure. Screw (2.6 × 12)..(E) × 1 Tape and solder. Main P. C. Board. KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF Remove.
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Page 18: Troubleshooting Guide
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 10 TROUBLESHOOTING GUIDE Cross Reference: Check Power (P.19) Bell Reception (P.20) Check Battery Charge (P.21) Check Link (P.22) Check Handset Transmission (P.24) Check Handset Reception (P.24) -
Page 19: Check Power
Reset Circuit (Base Unit) (P.42) Power Supply Circuit (P.41) Cross Reference: Charge Circuit (P.43) *: Each measurement points are shown in CIRCUIT BOARD (Base Unit) (P.67) or CIRCUIT BOARD (Handset) (P.69) KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF Note: CPU: IC2 Note: CPU: IC2... -
Page 20: Bell Reception
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 10.2. Bell Reception Cross Reference: Check Link (P.22) Telephone Line Interface (P.43) Cross Reference: Check Link (P.22) *: Each measurement points are shown in CIRCUIT BOARD (Base Unit) (P.67) or CIRCUIT BOARD (Handset) (P.69) Note:... -
Page 21: Check Battery Charge
Charge Circuit (P.43) Power Supply Circuit (P.41) Cross Reference: Reset Circuit (Handset) (P.47) *: Each measurement points are shown in CIRCUIT BOARD (Base Unit) (P.67) or CIRCUIT BOARD (Handset) (P.69) KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF Note: CPU: IC2 Note: CPU: IC2... -
Page 22: Check Link
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 10.4. Check Link **: Refer to Adjustment (P.26) *: Each measurement points are shown in CIRCUIT BOARD (Base Unit) (P.67) or CIRCUIT BOARD (Handset) (P.69) Note: CPU: IC2 RF IC: IC1... - Page 23 **: Refer to Adjustment (P.29). *: Each measurement points are shown in CIRCUIT BOARD (Base Unit) (P.67) or CIRCUIT BOARD (Handset) (P.69) KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF Note: CPU: IC2 RF IC: IC1...
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Page 24: Check Handset Transmission
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 10.5. Check Handset Transmission Cross Reference: Signal Route (P.46) 10.6. Check Handset Reception Cross Reference: Signal Route (P.46) *: Each measurement points are shown in CIRCUIT BOARD (Base Unit) (P.67) or CIRCUIT BOARD (Handset) (P.69) -
Page 25: Adjustments (Base Unit)
The operation-flow of Test mode and main check items are shown below. Note: **: Refer to the above table. Symptom KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF Remedy* Make confirmation in item (A) Make adjustments in item (B) Make adjustments in item (C) -
Page 26: How To Change The Channel
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 11.2. How to change the channel *: Refer to Flow Solder Side View (P.68). 11.3. Adjustment Adjustment Items Test Mode RX VCO 3ch Talk Confirmation TX VCO 3ch Talk Adjustment TX Frequency 3ch Talk Adjustment... -
Page 27: Adjustment Standard (Base Unit)
11.4. Adjustment Standard (Base Unit) When connecting the Simulator and Equipments for checking, please refer to the illustration below. TXPOWER R175 ZD11 DC12V or AC adaptor R132 AF OSC Loop SIMULATOR AF Volt Meter (F) Note: (A) - (H) is refered to ADJUSTMENTS (BASE UNIT) (P.25) FM Deviation Audio Meter... -
Page 28: Adjustments (Handset)
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 12 ADJUSTMENTS (HANDSET) If your unit have below symptoms, adjust or confirm each item using remedy column from the table. The movement of Battery Low Indicator is wrong. The base unit does not respond to a call from the handset. -
Page 29: How To Change The Channel
1. Apply 3.50V between BATT(+) and BATT(-). 2. Confirm that there is no flashing of RECHARGE LED. 3. Apply 3.40V between BATT(+) and BATT(-). 4. Confirm that there is flashing of RECHARGE LED. KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF Procedure load). Check or... -
Page 30: Adjustment Standard (Handset)
12.4. Adjustment Standard (Handset) When connecting the Simulator and Equipments for checking, please refer to the illustration below. (Component View) AF Volt Meter (H) R109 R101 R106 Note: (A) - (I) is refered to ADJUSTMENTS (HANDSET) (P.28) R105 R107 (G) Noise Squelch 47 F (A) Battery Low Oscilloscope... - Page 31 (Flow Solder Side View) 43.820MHz RF Millivolt Meter Frequency Counter Audio (I), (J) FM Deviation Analyzer Meter TXGND R200 C202 C201 TX VCO DC Volt Meter RX VCO DC Volt Meter Note: (A) - (I) is refered to ADJUSTMENTS (HANDSET) (P.28) Volt Meter TXPOWER Q200...
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Page 32: Rf Specification
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 13 RF SPECIFICATION 13.1. Base Unit Item TX Frequency TX Power Line Modulation factor Data Modulation factor Line Output level *: Refer to Adjustment (P.26). 13.2. Handset Item TX Frequency TX Power Data Modulation factor... -
Page 33: Frequency Table (Mhz)
Transmit Frequency 39.7750 39.7750 39.8250 39.8250 39.8750 39.8750 39.9250 39.9250 39.9750 39.9750 39.8000 39.8000 39.8500 39.8500 39.9000 39.9000 39.9500 39.9500 40.0000 40.0000 KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF PORTABLE UNIT Receive Frequency 30.0750 30.1250 30.1750 30.2250 30.2750 30.1000 30.1500 30.2000 30.2500 30.3000... -
Page 34: Explanation Of Cpu Data Communication
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 16 EXPLANATION OF CPU DATA COMMUNICATION 16.1. STAND-BY -> TALK, TALK -> STAND-BY *: The channel is changed if the noise interferes with the conversation. -
Page 35: Ringing
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 16.2. Ringing... -
Page 36: Changing The Channel
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 16.3. Changing the Channel... -
Page 37: Ports For Transmitting And Receiving Of Data
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 For example (one of part of data) KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF Base Unit: transmitting (TX) ... 17 Pin receiving (RX) ... 10 Pin... -
Page 38: Block Diagram (Base Unit)
RF IC MIX 1/2 -DATA -CLK -STB DC 5V RESET -DATA DATA -CLK -STB DATA CHARGE KX-TC2000NZB/W/F BLOCK DIAGRAM (BASE UNIT) TELEPHONE LINE INTERFACE DIODE LINE LINE BRIDGE TEL LINE D2, D3, D4, D5 Q11, IC3 POWER SUPPLY RESET CHARGE... -
Page 39: Block Diagram (Handset)
MIX 1/2 -DATA PLL OSC -CLK -STB DC 3.9V -DATA DATA -CLK -STB DATA DC 3.9V SPEAKER CONTROL LINE REC1 AUDIO SIGNAL BATTERY 3.9V DIODE BRIDGE DIODE CHARGE RESET BRIDGE TERMINAL CHARGE IC2 PING37 BUZZER Q7, BZ1 KX-TC2000NZB/W/F BLOCK DIAGRAM (HANDSET) -
Page 40: Circuit Operation
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 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 (P.34). -
Page 41: Power Supply Circuit
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 19.2. Power Supply Circuit The power 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. -
Page 42: Reset Circuit (Base Unit)
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 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... -
Page 43: Charge Circuit
The combination of five outputs “1”, “0” makes 32 (=2 generator. CHG+(Base) [CHG+(Handset) IC3D (12,13 R148 R107 R116 R161 5) level signals and makes smooth waveform after filter like a DTMF KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF BATT(1)...Battery...BATT(2) IC2 (24) [BELL] R [OFF HOOK]... -
Page 44: Transmitter/Receiver
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 19.7. Transmitter/Receiver Base Unit and Handset are mainly consists of RF(Radio Frequency) IC and CPU. Base Unit and Handset transmit/receive voice signal and data signal through the antenna on carrier frequency. Signal Pass : *Refer to CDL TX/RX in Signal Route (P.46). -
Page 45: Handset To Base
The 10.7 MHz is mixed with reference and 450KHz narrow band IF is generated. The demodulation audio signal is adjusted to the maximum at T1. RF IC is controlled by CPU (RF_STB, DATA, CLK). The RX local frequency is generated by RXVCO. KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF... -
Page 46: Signal Route
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 19.8. Signal Route Each signal route is as follows. -
Page 47: Circuit Operation (Handset)
20.1. 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. KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF Fig. 4 Fig. 5... -
Page 48: Battery Low / Power Down Detector
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 20.2. 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;... -
Page 49: Cpu Data (Base Unit)
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 21 CPU DATA (Base Unit) 21.1. IC2... -
Page 50: Cpu Data (Handset)
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 22 CPU DATA (Handset) 22.1. IC2... -
Page 51: Rf Ic (Base Unit And Handset)
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 23 RF IC (Base Unit and Handset) 23.1. IC1... -
Page 52: How To Replace Flat Package Ic
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 24 HOW TO REPLACE FLAT PACKAGE IC 24.1. Preparation SOLDER 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.) -
Page 53: Cabinet And Electrical Parts Location (Base Unit)
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 25 CABINET AND ELECTRICAL PARTS LOCATION (BASE UNIT) -
Page 54: Cabinet And Electrical Parts Location (Handet)
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 26 CABINET AND ELECTRICAL PARTS LOCATION (HANDET) -
Page 55: Accessories And Packing Materials
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 27 ACCESSORIES AND PACKING MATERIALS... -
Page 56: Replacement Parts List
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF 28 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. - Page 57 ERDS2TJ106 R145 ERJ3GEYJ102 R146 ERJ3GEYJ153 R148 ERJ3GEYJ103 R149 ERJ3GEYJ182 1.8K R150 ERJ3GEYJ514 510K R152 ERDS2TJ106 R153 ERJ3GEYJ105 R154 ERJ3GEYJ470 R155 ERJ3GEYJ470 R156 ERJ3GEYJ470 R159 ERJ3GEYJ104 100K R160 ERJ6GEY0R00 R161 ERJ6GEY0R00 KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF Part Name & Description Remarks...
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Page 58: Handset
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF Ref. Part No. Part Name & Description R166 ERJ3GEYJ470 R167 ERJ3GEYJ103 R170 ERJ3GEYJ102 R172 ERDS2TJ223 R173 ERDS2TJ102 R174 ERDS2TJ102 R180 ERJ3GEYJ563 R181 ERJ3GEYJ331 R183 ERJ6GEYJ106 R184 ERDS2TJ106 R185 ERJ3GEYJ104 100K R195 ERDS2TJ472 4.7K R197 ERJ3GEYJ223... - Page 59 8.2K ERJ3GEYJ272 2.7K ERJ3GEYJ222 2.2K ERJ3GEYJ820 ERJ3GEYJ104 100K ERJ3GEYJ221 ERJ3GEYJ122 1.2K ERJ3GEYJ102 ERJ3GEYJ102 ERJ3GEYJ222 2.2K ERJ3GEYJ222 2.2K ERJ3GEYJ331 ERJ3GEYJ222 2.2K ERJ3GEYJ103 ERJ3GEYJ103 ERJ3GEYJ331 ERJ3GEYJ222 2.2K ERJ3GEYJ222 2.2K ERJ3GEYJ103 ERJ3GEYJ222 2.2K KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF Part Name & Description Remarks...
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Page 60: Accessories And Packing Materials
KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF Ref. Part No. Part Name & Description ERJ3GEYJ222 2.2K ERJ3GEYJ105 ERJ3GEYJ104 100K ERJ3GEYJ104 100K ERJ3GEYJ104 100K ERJ3GEYJ103 ERJ3GEYJ104 100K ERJ3GEYJ105 ERJ3GEYJ105 ERJ3GEY0R00 ERJ3GEY0R00 ERJ3GEYJ105 ERJ3GEYJ102 ERJ3GEYJ104 100K ERJ3GEYJ104 100K ERJ3GEYJ103 ERJ3GEYJ334 330K ERJ3GEYJ393 ERJ3GEY0R00 ERJ3GEYJ154... -
Page 61: For Schematic Diagram
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. mark have special characteristics important for safety. When replacing KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF... -
Page 62: Schematic Diagram (Base Unit)
R178 R127 R128 R0603 R179 R0603 R0603 C120 C0603 R177 C121 IC3C R139 R140 C0603 EC5\5 R0603 R0603 +12V R144 R184 10M R10 10M R10 R152 R183 10M 0805 KX-TC2000NZB/NZW/NZF SCHEMATIC DIAGRAM (Base Unit) LINE JACK 4C LINE\JK1 AGC2 AGC1... -
Page 63: Rf Unit (Base Unit)
R0603 EC5/5 100P 180K C0603 R0603 R0603 R0603 100P C109 C0603 6800P C0603 R0603 150K R0603 C0603 R0603 R155 R0603 R0603 100K R0603 220K R0603 R0603 100K R0603 470K R0603 C0603 R0603 R0603 R0603 C0603 KX-TC2000NZB/NZW/NZF SCHEMATIC DIAGRAM (Base Unit) -
Page 64: Schematic Diagram (Handset)
RF-CLK R0603 LED6 RX DATA LEC\SQ 100K R0603 100K R0603 100K R0603 100K R0603 RINGER FLASH K3 LOUD REDIAL KP\RO\4.5C PROG PAUSE K10 # K13 9 K16 6 K19 3 TALK AUTO K22 DIRT 120 OHM KX-TC2000NZB/NZW/NZF SCHEMATIC DIAGRAM (Handset) -
Page 65: Rf Unit (Handset)
C0603 C0603 3.3K FN5546 R0603 683 X7R R0603 R0603 C0603 R102 47U/10V R0603 R0603 EC5/2.5 C0603 R0603 R0603 220K R0603 R0603 R0603 R0603 100K R107 R0603 430K R0603 R0603 R0603 C0603 R0603 R0603 C0603 KX-TC2000NZB/NZW/NZF SCHEMATIC DIAGRAM (RF Unit (Handset)) -
Page 66: Memo
31.3. Memo... -
Page 67: Circuit Board (Base Unit)
32 CIRCUIT BOARD (Base Unit) 32.1. Component View J149 R144 R127 R128 R113 R152 J157 J156 KX-TC2000NZB/NZW/NZF CIRCUIT BOARD (Component View (Base Unit)) J166 J155 J153 J117 J113 J115 J159 J116 D404... -
Page 68: Flow Solder Side View
(RF IC: 32) RX-VCO TX-VCO R154 R198 C109 R166 R148 R149 R183 RING DET (CPU: 24) KX-TC2000NZB/NZW/NZF CIRCUIT BOARD (Flow Solder Side View (Base Unit)) R407 C402 R409 XOUT (CPU: 1) R405 VDD (CPU: 28) R153 R158 R403 CHG LD... -
Page 69: Circuit Board (Handset)
33 CIRCUIT BOARD (Handset) 33.1. Component View R109 R101 R106 R105 R107 TX DATA TX DATA (DV1) (CPU: 36) CHG DET VDD (CPU: 40) (CPU: 37) Battery Low RSSI KX-TC2000NZB/NZW/NZF CIRCUIT BOARD (Component View (Handset)) -
Page 70: Flow Solder Side View
33.2. Flow Solder Side View TXPOWER TXGND Q200 C203 R200 R201 C202 C201 IF IN TX VCO (RF IC: 32) 2nd Mix (RF IC: 36) V Bat (RF IC: 33) KX-TC2000NZB/NZW/NZF CIRCUIT BOARD (Flow Solder Side View (Handset)) - Page 71 KX-TC2000NZB / KX-TC2000NZW / KX-TC2000NZF KXTC2000NZB KXTC2000NZW KXTC2000NZF...