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Panasonic KX-TCD420NZM Service Manual
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Panasonic KX-TCD420NZM Service Manual

Panasonic KX-TCD420NZM Service Manual

Digital cordless answering system, metalic gray version
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ORDER NO. KM40307151C3
Telephone Equipment
KX-TCD420NZM / KX-A142NZM
Digital Cordless Answering System
Metalic Gray Version
(for New Zealand)
1

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Summary of Contents for Panasonic KX-TCD420NZM

  • Page 1 ORDER NO. KM40307151C3 Telephone Equipment KX-TCD420NZM / KX-A142NZM Digital Cordless Answering System Metalic Gray Version (for New Zealand)
  • Page 2 SPECIFICATIONS 2003 Panasonic Communications Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.
  • Page 3 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 4 Please check the manufac turer’s specific instructions for the melting points of their products and any precautions for using their product with other materials. The following lead free (PbF) solder wire sizes are recommended for service of this product: 0.3mm, 0.6mm and 1.0mm. 1.2.
  • Page 5 3. Use a conductive mat on the worktable. 4. Do not touch 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 recommendenced by the manufacturer. Dispose of used batteries according to the manufacture’s Instructions.
  • Page 6 The handset which power is off will be turned on automatically when it is placed on the base unit. In normal use, the handset and the base unit should be powered on at all times. Note for Service: The battery strength may not be indicated correctly if the battery is disconnected and connected again, even after it is fully charged.
  • Page 7 - Do not use non-rechargeable batteries. If non-rechargeable batteries are fitted and start charging, it may cause the leakage of the battery electrolyte. Please use only Panasonic HHR-4EPT(Ni-MH) or P-4NPT(Ni-Cd) batteries. 5. LOCATION OF CONTROLS 5.1. Base Unit...
  • Page 8 5.2. Handset 6. SETTINGS 6.1. Connection 6.1.1. Base Unit Plug in the AC adaptor and the telephone line cord in order 1, 2, 3, 4.
  • Page 9 The AC adaptor must remain connected at all times (It is normal for the adaptor to feel warm during use). - Never install telephone wiring during a lightning storm. - The unit will not work during a power failure. we recommend you connect a standard telephone on the same line for power protection.
  • Page 10 6.3. PIN Code 6.3.1. Base Unit - To exit the operation, press any time. For Service Hint: * : If the current 4-digit PIN is forgotten, press you will be able to enter new PIN. 6.3.2. Handset...
  • Page 11 - To exit the operation, press any time. For Service Hint: * : If the current 4-digit PIN is forgotten, press you will be able to enter new PIN. 6.3.3. Reset Base Unit PIN to Default (0000) -When There is NO Handset Registered- 6.3.3.1.
  • Page 12 1. Solder a pin or lead wire to GND, SDA, and SCLK on base PCB. 2. Plug in AC adaptor to the base. 3. Turn on the power to the JIG (9V). 4. Then connect the cable to each pins using clip. As for the connection between JIG and PCB, see below photos.
  • Page 13 Function Initial Setting Remarks (selectable options) Ringer Mode All Handsets All Handsets/Specific Handset Number of Rings Up to 6 rings Flash Timing 600 msec 100/600 msec Pause Timing 3 seconds 3 seconds/5 seconds Call Restricted Handsets All Clear Each Handset can be set indivisually.
  • Page 14 Function Initial Setting Remarks (selectable options) Time Alarm Mode OFF/ON Alarm Time Clear OFF/Once/Daily Handset Ringer Volume Handset External Ringer Pattern 20 patterns Handset Internal Ringer Pattern 20 patterns Handset Paging Tone Pattern 20 patterns Handset Alarm Tone Pattern 20 patterns Key Tone ON/OFF Call Waiting Tone...
  • Page 15 6.6. Recall Feature RECALL is used to access special telephone services. Contact your Network provider for details. If your unit is connected to a PBX, pressing RECALL allows you to access some features of your host PBX such as transferring an extension call. 6.7.
  • Page 16 - To exit the operation, press any time. - *1: The factory preset is 0000. - *2: The selected handset number flashes. 6.9. Cancelling Call Restricted Handset(s) - To exit the operation, press any time. - *1: The factory preset is 0000. - *2: The selected handset(s) will stop flashing.
  • Page 17 - To exit the operation, press any time. - *1: The factory preset is 0000. - *2: If is selected, is displayed (Refer to Handset Display ()). 6.11. Selecting the Display Language - To exit the operation, press any time. - *1 You can select one of 10 languages.
  • Page 18 6.12. Select Flash Timing You can select the flash timing, 100 mesc (milliseconds) or 600 mesc depending on your PBX requirements. - To exit the operation, press any time. - *1: The factory preset is 0000. For Service Hint: Refer to Flash Time setting 6.13.
  • Page 19 *1 If any key is not pressed over 60 seconds, the display will return to “Setting Base”. *2 Refer to PIN Code () for more details. 7. DISPLAY 7.1. Handset Display 7.2. Before Requesting Help (Troubleshooting) If you experience any problems with the normal use of your apparatus, you should unplug it from the telephone outlet and connect a known working telephone in its place.
  • Page 20 department of your Network provider. If it operates correctly, then the problem is likely to be a fault in your apparatus. In this case, contact your supplier for advice. Your Network provider may charge you if they attend a service call that is not due to apparatus supplied by them. Turn the power OFF then ON (Handset) / Disconnect then connect the AC adaptor (Base Unit).
  • Page 21 Cross Reference: Power On/Off Call BAR On/Off (Call Prohibition On/Off) Key Lock PIN Code 8. OPERATIONS 8.1. Power On/Off *1 When button is released, the display changes to the standby mode. *2 The display goes blank. 8.2. Making a Call *1 If you need correction, press CLEAR.
  • Page 22 - Each ringer will start ringing with lower volume then gradually increase the volume when receiving a call. *1 You can also answer a call by pressing any dialling button, INTERCOM, , or 8.4. Setting the Clock/Date After a mains power failure the clock needs to be reset. Ensure that icon is not flashing.
  • Page 23 8.5.1. Storing a Caller Information - To exit the operation, press any time. *1 If you need correction, press RIGHT or LEFT to move cursor then clear a character by pressing CLEAR, and/or enter characters. Characters are cleared or added to the left of the flashing character.
  • Page 24 - To exit the operation, press any time. *1 If there is no item stored in the phonebook, the display shows *2 Digits are cleared to the left of the flashing digit. *3 Digits are added to the left of the flashing digit. If you need to clear or add more than one digit, repeat the steps from 4.
  • Page 25 - To exit the operation, press any time. *1 If you need correction, press CLEAR. Digit is cleared to the left, then enter numbers. 8.5.3. Storing the Number from the Redial/Caller List into the Phonebook - To exit the operation, press any time.
  • Page 26 - To exit the operation, press any time. *1 If there is no item stored in the phonebook, the display shows *2 The number is flashing if the dialling button is already assigned as a hot key. *3 Phonebook registration will be remained even hot key registration is cleared. 9.
  • Page 27 Shown in Fig.- To Remove Remove Lower Cabinet Screws (2.6 × 12)..(A) × 2 Main P.C. Board Main P.C. Board 9.2. Handset...
  • Page 28 Shown in Fig.- To Remove Remove Rear Cabinet Screws (2 × 10)..(B) × 2 Rear Cabinet Follow the procedure. Main P.C. Board Screw (2 × 8)....(C) × 1 Screws (2 × 8).....(D) × 2 Main P.C. Board 9.3. Charger Unit...
  • Page 29 Shown in Fig.- To Remove Remove Lower Cabinet Screws (2.6 × 14)..(E) × 2 Main P.C. Board Main P.C. Board 10. ASSEMBLY INSTRUCTIONS 10.1. Warning When Constructing the Base Unit 11. TROUBLESHOOTING GUIDE Flow Chart...
  • Page 30 Cross Reference: Check Power Bell Reception Check Battery Charge Check Link Check Handset Transmission Check Handset Reception SIGNAL ROUTE TAM Voice Prompt Problems 11.1. Check Power 11.1.1. Base Unit Is the AC Adaptor inserted into AC outlet? (Check AC Adaptor’s specification.)
  • Page 31 Cross Reference Power Supply Circuit Note: BBIC is IC8. 11.1.2. Handset Cross Reference Power Supply Circuit/Reset Circuit Note: BBIC is IC1. 11.2. Check Battery Charge 11.2.1. Base Unit Cross Reference: Charge Circuit...
  • Page 32 11.2.2. Handset Cross Reference: Check Power Charge Circuit Note: BBIC is IC1. 11.2.3. Charger Unit Cross Reference: Power Supply Circuit 11.3. Check Link 11.3.1. Base Unit...
  • Page 33 Cross Reference: Power Supply Circuit Adjustment (Base Unit) 11.3.2. Handset Cross Reference Power Supply Circuit...
  • Page 34 Adjustment 11.4. Check Handset Transmission Cross Reference: SIGNAL ROUTE 11.5. Check Handset Reception Cross Reference: HOW TO CHECK THE HANDSET SPEAKER SIGNAL ROUTE 11.6. Check Caller ID Cross Reference: SIGNAL ROUTE 11.7. TAM Voice Prompt Problems...
  • Page 35 Cross Reference: Check Link Check Handset Reception EEPROM LAYOUT (BASE UNIT) TAM Voice Prompt Download 11.8. Bell Reception 11.8.1. Base Unit Note: BBIC is IC8. 11.8.2. Handset Cross Reference:...
  • Page 36 Telephone Line Interface Check Link Note: BBIC is IC1. 12. CHECK PROCEDURE (BASE UNIT) 12.1. Preparation 12.1.1. Equipment Required - DECT tester: Rohde & Schwarz, CMD 60 is recommended. - Frequency counter: it must be precise to be able to measure 1Hz (precision;...
  • Page 37 12.2.2. PC Setting 1. Open a window of MS-DOS mode from the start-up menu. 2. Change a directory to the one with “RTX_COM” contained. 3. Type “SET RTX_COM=1” from the keyboard (when COM port 1 is used for the connection). 4.
  • Page 38 13.1.1. Equipment Required - DECT tester: Rohde & Schwarz, CMD 60 is recommended. - Frequency counter: it must be precise to be able to measure 1Hz (precision; ±4ppm). Hewlett Packard, 53131A is recommended. - DC power: it must be able to output at least 1A current under 2.4V for Handset, 9V for JIG.
  • Page 39 Note: See the table below for frequently used commands. Command name Function Example rdeeprom Read the data of EEPROM Type “rdeeprom 00 00 FF”, and the data from address “00 00” to “FF” is read out. readid Read ID (RFPI) Type “readid”, and the registered ID is read out.
  • Page 40 Items Procedure Check Adjustment Point 1. Confirm that the voltage between J101 and GND is 2.65V ± 0.2V. 2.65V Supply C40,C41,C4 Confirmation C43,C44,IC C32,C33,C3 1. Confirm that the voltage between TP11 and GND is 4.0V ± 0.2V. 4.0V Supply D4,C36,IC2 Confirmation R61,R62,C3 C72,D14,R7...
  • Page 41 Items Procedure Check Adjustment Point 1. Execute the command "deactmac". BBIC Clock TP15 IC8,C53,C5 2. Execute the command "conttx". Adjustment 3. Input Command “rdeeprom_00_00_02”, then you can confirm the current value. 4. Adjust the frequency of TP15 executing the command "setfreq 00 xx (where xx is the C55,C56,X1 value)"...
  • Page 42 Items Procedure Check Adjustment Point Modulatoin Follow steps 1 to 3 of (H) above. IC6,IC4,L2 Check and 4. Confirm that the B-Field Modulation is 340kHz/div ~ 402kHz/ Adjustment C57,C61,C7 div using data type Fig31. 5. Adjust the B-Field Modulation if required. (Execute the C77,C78,C7 command "readmod"...
  • Page 43 Items Procedure Check Adjustment Point Sensitivity Follow steps 1 to 3 of (H) above. IC6,IC4,L2 Receiver 4. Set DECT tester power to -88dBm. Confirmation C57,C61,C7 5. Confirm that the BER is < 1000ppm. C77,C78,C7 C68,C69,R7 R80,C63,C6 R83,R84,C6 L3,C79,C67 C66,D10,C6 Timing Follow steps 1 to 3 of (H) above.
  • Page 44 Items Procedure Check Adjustment Point RSSI Level Follow steps 1 to 3 of (H) above. IC6,IC4,L2 Confirmation 4. Set DECT tester power to -88dBm. C57,C61,C7 5. Execute the command "readrssi". 6. Confirm: 29 < returned value < 3E (hex) C77,C78,C7 C68,C69,R7 R80,C63,C6 R83,R84,C6...
  • Page 45 Items Procedure Check Adjustment Point 1. Configure the DECT tester (CMD60) as follows; Receive Audio IC6,IC4,L2 <Setting> Check and Adjustment -Test mode: FP C57,C61,C7 -Mode: Normal -PMID: 0000 2. Execute the command "testmode". C77,C78,C7 3. Initiate connection from DECT tester. 4.
  • Page 46 Items Procedure Check Adjustment Point 1. Configure the DECT tester (CMD60) as follows; Transmit Audio IC6,IC4,L2 <Setting> Check and Adjustment -Test mode: FP C57,C61,C7 -Mode: Normal -PMID: 0000 2. Execute the command "testmode". C77,C78,C7 3. Initiate connection from DECT tester. 4.
  • Page 47 14.2.1. Component View Note: (H) - (O) is refered to ADJUSTMENTS (BASE UNIT AND CHARGER UNIT) 14.2.2. Flow Solder Side View Note: (A) - (P) is refered to ADJUSTMENTS (BASE UNIT AND CHARGER UNIT) 14.3. Adjustment (Charger Unit) Items Procedure Check Adjustment Point...
  • Page 48 Symptom Remedy* The movement of Battery Low indicator is wrong. Make confirmation in item (F)~(G) The handset does not respond to a call from base unit. Make adjustments in item (H), (J)~(N) The handset does not transmit or the transmit frequency is off. Make adjustments in item (H)~(K), (M) The transmit frequency is off.
  • Page 49 Items Procedure Check Adjustment Point 1. Confirm that the voltage between TP18 and GND is 0V ± 0.4V. VBACK Status IC1,F1,R21 Confirmation R4,C33,L2 D1,C15,C2 C14,Q1,R3 R2,D2,R22 C26,R16,X1 1. BBIC Confirmation (Execute the command "getchk"). BBIC IC1,X1,C16 2. Confirm the returned checksum value. Confirmation Connection of checksum value and program number is shown below.
  • Page 50 Items Procedure Check Adjustment Point 1. Apply 2.3V ± 0.005V between TP3(+) and TP4(-). Battery Monitor IC1,D4,L4, 2. Execute the command "readbatt". Confirmation L5,Q2,Q3, 3. Confirm: 98 < returned value < A8 (Hex) R6,D2,R22 4. Execute the command "WRTBAT2 XX". XX: (returned value) - 06 (Hex) C26,F1,R21 1.
  • Page 51 Items Procedure Check Adjustment Point Modulatoin TP15 Follow steps 1 to 4 of (I) above. IC1,IC3,C54 Check and 5. Confirm that the B-Field Modulation is 340kHz/div ~ 402kHz/ Adjusment C66,C60,L3 div using data type Fig31. 6. Adjust the B-Field Modulation if required. (Execute the C57,C55,C5 command "Readmod"...
  • Page 52 Items Procedure Check Adjustment Point Timing Follow steps 1 to 4 of (I) above. IC1,IC3,C54 Confirmation 5. Confirm that the Timing accuracy is < ± 10ppm. C66,C60,L3 C57,C55,C5 C62,R23,R2 C63,C64,C6 RSSI Level Follow steps 1 to 4 of (I) above. IC1,IC3,C54 Confirmation 5.
  • Page 53 Items Procedure Check Adjustment Point 1. Configure the DECT tester (CMD60) as follows; (P) Transmit Audio TP15 IC1,C8,R7, <Setting> Check and R8,C6,C7, Confirmation -Test mode: FP C5,R5,R1, -Mode: Normal C4,IC3,C54 -RFPI: 0102030405 2. Execute the command "testmode". 3. Execute the command "regcmd60". C66,C60,L3 4.
  • Page 54 Item Value Refer to -. * Remarks TX Power More than 20 dBm ~ 25 Adjustment (Base Unit) Modulation 340 kHz/div ~ 402 kHz/ Data type: Fig31 Adjustment (Base Unit) Frequency Offset -50 kHz ~ +50 kHz Adjustment (Base Unit) RX Sensitivity <...
  • Page 55 18. FREQUENCY TABLE (MHz)
  • Page 56 BASE UNIT HANDSET Receive Frequency Channel No Transmit Frequency Transmit Frequency Receive Frequency 1897.344 1897.344 1897.344 1897.344 1895.616 1895.616 1895.616 1895.616 1893.888 1893.888 1893.888 1893.888 1892.160 1892.160 1892.160 1892.160 1890.432 1890.432 1890.432 1890.432 1888.704 1888.704 1888.704 1888.704 1886.976 1886.976 1886.976 1886.976 1885.248 1885.248...
  • Page 57 - Detector - Compress/Expander - First/Second Mixer - Amplifier for transmission and reception - EEPROM: IC4 - Temporary operating parameters (for RF, etc.) - Flash PROM: IC7 - 2M bit - Operational Firmware for CPU - Serial Flash ROM: IC6 - 4M bit - Audio data for TAM operation - Additionally,...
  • Page 58 20.3. Telephone Line Interface <Function> - Bell signal detection - Clip signal detection - ON/OFF hook circuit - Audio circuits Bell & Clip (: Calling Line Identification Presentation: Caller ID) signal detection: In the standby mode, Q2 is open to cut the DC loop current and decrease the ring load. When ring voltage appears at the TP3 (A) and TP40 (B) leads (when the telephone rings), the signal is transferred as follows;...
  • Page 59 In the standby mode, Q2 is open, and connected as to cut the DC loop current and to cut the voice signal. The unit is consequently in an off-hook condition. When IC8 detects a ring signal or press the TALK Key onto the handset, Q4 turns on and then Q2 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 60 Handset consists of the following ICs as shown in BLOCK DIAGRAM (HANDSET) - DECT BBIC (Base Band IC): IC1 - All data signals (forming/analyzing ACK or CMD signal) - All interfaces (ex: Key, Detector Circuit, Charge, DC/DC Converter, EEPROM, LCD) - RF Module: IC3 - PLL Oscillator - Detector...
  • Page 61 Circuit Operation: "Battery Low" and "Power Down" are detected by BBIC which check the voltage from battery. The detected voltage is as follows; - Battery Low Battery voltage: V(Batt) < 2.3V The BBIC detects this level and " " starts flashing and "battery alarm"...
  • Page 62 25. CPU DATA (BASE UNIT) 25.1. IC8 (BBIC)
  • Page 63 Descriptiojn Hi-z Remarks for Down Load for Down Load for Down Load SYRI Active Active VSSO XTAL X'tal LOAD X'tal VDDREG RXDSG Active Active VDDTXDA TXDA Active Active (NO USE) DAON PA-ON PA-OFF SYCL Active Active SYEN Normal Latch SYDA Active Active RXDA...
  • Page 64 Memory Descriptiojn Hi-z Remarks for Flash Memory for Flash Memory for Flash Memory for Flash Memory for Flash Memory for Flash Memory for Flash Memory for Flash Memory for Flash Memory for Flash Memory for Flash Memory DO/I for Flash Memory DO/I for Flash...
  • Page 65 Descriptiojn Hi-z Remarks P0.3 (NO USE) P0.1 for Flash Memory P0.0 No Key for Key PX.2 Write IC4 for Flash Memory PX.1 Read IC4 for Flash Memory (NO USE) (NO USE) LED ON LED OFF (NO USE) (NO USE) TONE Ring Det (NO USE) (NO USE)
  • Page 66 Descriptiojn Hi-z Remarks FRDY for Flash Memory for Flash Memory for Flash Memory for Flash Memory for Flash Memory (NO USE) (NO USE) (NO USE) (NO USE) (NO USE) (NO USE) VSSA VDDA (NO USE) (NO USE) (NO USE) (NO USE) (NO USE) (NO USE) (NO USE)
  • Page 67 Descriptiojn Hi-z Remarks RESETQ Normal Reset Note: I_PU; Internal Pull-Up, I_PD; Internal Pull-Down 26. CPU DATA (HANDSET) 26.1. IC1 (BBIC) Description Hi-z Remarks LCD_SEGMENT Active LCD_COMMON Active LCD_COMMON Active LCD_COMMON Active LCD_COMMON Active LCD_COMMON Active LCD_COMMON Active PA_SW PA ON T/R SW Transmit RX_DATA...
  • Page 68 Description Hi-z Remarks VDDPM VDDLO VDDBAT VDDLR CHARGE_START for charge VDDA VSSA LSRN LSRP BANDGAP_REF MICS MICP MICN Reference Voltage RSSI P0.4 AD4N AD4P (NO USE) KEY_STRB Active KEY_STRB Active KEY_STRB Active LCD_SEGMENT Active LCD_SEGMENT Active LCD_SEGMENT Active KEY_STRB Active KEY_STRB Active LCD_SEGMENT...
  • Page 69 Description Hi-z Remarks VDDLI LCD_SEGMENT Active LCD_SEGMENT Active LCD_SEGMENT Active LCD_SEGMENT Active LCD_SEGMENT Active LCD_SEGMENT Active LCD_SEGMENT Active LCD_SEGMENT Active (NO USE) Power Select Low Power LCD_SEGMENT Active LCD_SEGMENT Active LCD_SEGMENT Active LCD_SEGMENT Active LCD_SEGMENT Active LCD_SEGMENT Active LCD_SEGMENT Active LCD_SEGMENT Active LCD_SEGMENT...
  • Page 70 Type Name Description default The EEPROM location is preset to the Default value by the eeprom default The EEPROM location is set during the production test and should not be adjust overwritten. The value is set by the eeprom default loader only if the location contains all 1’s (byte: 0xFF, word FFFFh), i, e.
  • Page 71 Address Default Name Type Description Country Setting 0000-01 00 E0 EepromOscillator Frequency adjustment 0002 ModulationDeviation Modulation adjustment 0020-0024 RFPI (ID for Base Unit) RFPI 0025-0026 00 00 AC (Base PIN code) AC code 0028 TBR22Test TBR22 test 0030-0034 FF .. FF IPUI_1 (ID for H/S 1) Ipui for handset 1.
  • Page 72 Address Default Name Type Description Country Setting 09F1 Handset registration info - registration HsRegInfo.RegFlags 1=reg, 0=no reg 09F2 Handset registration info - EMC flags HsRegInfo.EmcFlags 6..7: not used 0..5: handset 1..6 info, 1=known , 0 unknown 09F3 RingMode Ring mode. Modes used in KAMMA4 20h and 21h.
  • Page 73 Address Default Name Type Description Country Setting 0F1C Detect CLIP detect configuration 0-2: Mode: 0: Learn mode, 1: only, 3: Generic mod, 4: Russian only 3: Unused4 4: Onhook: 1=enable 0=disable 5: Offhookk: 1=enable 0=disable 6: Msgwaiting: 1=enable 0=disable 7: Unused7 0F2F ClipExt.MinAddZeroLen/ Automatic addition of top zero...
  • Page 74 Address Default Name Type Description Country Setting 0F37..38 3D 01 Parse.Configuration 3D 04 Clip parse set configuration 0: Etsi: 1=enable 0=disable 1: ForwardNumber: 1=enable 2: Danish: 1=enable 0=disable 3: Dutch: 1=enable 0=disable 4: Canadian: 1=enable 0=disable 5: Swedish: 1=enable 0=disable 6: UserDefined: 1=enable 0=disable 7: KPN vmwi: 1=enable 0=disable 8: ProtocolPriority:...
  • Page 75 Address Default Name Type Description Country Setting 0F40 CountryCode Country code 0: Germany 1: Greece 2: Turkey 3: England 4: Switzerland 5: Poland 7: France 8: Denmark A: Italy C: Czech E: Hungary F: Spain 13: South Africa 14: Russia 0F41-0F60 TamTagInfo Message TAG information...
  • Page 76 Address Default Name Type Description Country Setting 0F61 TamPrgRings TAM Current Setting data 0: Answer ON/OFF 0:OFF/1:ON 1: ICM Record Time Mode1 0:OFF Greeting Only 2: ICM Record Time Mode2 0:OFF Unlimited Mode1=0&Mode2=0:ICM Record 1min 3: CPC time selection 0:time A/ 4: Greeting Monitor mode ON/OFF /1:ON 5: Reserve...
  • Page 77 Address Default Name Type Description Country Setting 0F66 DetData Detection data 0: Selection CPC A/B 0:OFF (A ON(Select) 1: Reserve 2: Detect 1st Short Bell (300ms) 3: Cyclic Detection of VOX 0: OFF ON(Detect) 4: Detection of DSC 0: OFF/1: ON( 5: Reserve 6: Reserve 7: Reserve...
  • Page 78 Address Default Name Type Description Country Setting 0F6A TamRingsDefNum Number of rings default data 0: Default is Automatically Turn Toll saver 2-7: Default of the number of rings Turn on. 27.3.6. BsUiTask settings Address Default Name Type Description Country Setting 0F6E Config1 BsUiTask configuration (MSB)
  • Page 79 28.2. Introduction The handset uses a 32k bit serial EEPROM (IC2) for storing volatile parameters. All parameters are set up before the handset the factory. Some of these are vital for the operation of the hardware so a set of default parameters is programmed before the actual hardware fine-tuning can be initiated.
  • Page 80 Address Default Name Type Description Country Setting 0100-0104 RFPI_1 (Base 1) RFPI for registration 1 0105 SerClass_1 Service class for registration 1 0106 LAL_1 Location area level for registration 0107 IPUI_LEN_1 IPUI length for registration 1 0108-0114 IPUI_1 IPUI for registration 1 0115 ZAP_1 ZAP for registration 1...
  • Page 81 Address Default Name Type Description Country Setting 0462 Language 00 = English 01 = Spanish 02 = French 03 = Italian 04 = Dutch 05 = Turkish 06 = Hungarian 07 = Portuguese 08 = Polish 09 = Command 0A = German 0467 FactoryLanguageSetting x Factory setting for language:...
  • Page 82 Address Default Name Type Description 0F04 LowVoltage Voltage on which to start battery low indication. The voltage has to be measured under value for 8 seconds before the handset start signaling low battery. LowVoltage[eeprom]=[ADC-steps] LowVoltage[mV](14.35[mV/step]) 28.3.4. Default Audio-Parameters Address Default Name Type Description...
  • Page 83 Address Default Name Type Description Country Setting 0F53 Menu Config bit 0 - Registration menu on/off 1/0 bit 1 - Select base menu on/off 1/0 bit 2 - Internal ringer menu on/off bit 3 - Page ringer menu on/off 1/0 bit 4 - Standby mode menu on/off bit 5 - Battery select menu on/off 1 bit 6 - Call wating menu on/off 1/0...
  • Page 84 2. Apply flux to all of the pins on the IC. 3. Being careful to not unsolder the tack points, slide the soldering 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. 29.3.
  • Page 86 31. CABINET AND ELECTRICAL PARTS LOCATION (HANDSET) 32. CABINET AND ELECTRICAL PARTS LOCATION (CHARGER UNIT)
  • Page 87 33. ACCESSORIES AND PACKING MATERIALS...
  • Page 88 33.1. KX-TCD420NZM 33.2. KX-A142NZM...
  • Page 89 34. TERMINAL GUIDE OF THE ICs, TRANSISTORS AND DIODES 34.1. Base Unit...
  • Page 90 34.2. Handset 34.3. Charger Unit 35. REPLACEMENT PARTS LIST Note: 1. RTL (Retention Time Limited)
  • Page 91 Note: 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 is dependant on the type of assembly, and in accordance with the laws governing part and product retention.
  • Page 92 Ref. No. Part No. Part Name & Description Remarks PQGG10154V5 GRILLE ABS-HB PQKM10586Z4 CABINET BODY ABS-HB PQHR10962Z OPTIC CONDUCTIVE PARTS, LED LENS PQJT10203Z TERMINAL PQKE10356Z1 GUIDE, CHARGE TERMINAL CASE POM-HB PQSA10131Z ANTENNA, MAIN PQSA10132Z ANTENNA, SUB PQYF10560Z4 CABINET COVER ABS-HB PQGT16380Z NAME PLATE 35.1.2.
  • Page 93 Ref. No. Part No. Part Name & Description Remarks PQ4R18XJ472 4.7K ERJ3GEYJ103 ERJ3GEYJ184 180K ERJ3GEYJ104 100K PQ4R10XJ562 5.6K ERJ3GEYJ103 ERJ3GEYJ222 2.2K PQ4R18XJ000 ERJ3GEYJ333 ERJ3GEYJ562 5.6K ERJ12YJ220 ERJ3GEYJ104 100K ERJ3GEYJ333 ERJ12YJ560 ERJ3GEYJ474 470K ERJ3GEYJ105 ERJ3GEYJ221 ERJ3GEYJ181 ERJ3GEYJ821 ERJ3GEYJ103 ERJ3GEYJ102 ERJ3GEYJ102 ERJ3GEYJ684 680K ERJ3GEYJ684 680K...
  • Page 94 Ref. No. Part No. Part Name & Description Remarks ERJ3GEYJ102 ERJ3GEYJ101 ERJ3GEYJ103 ERJ3GEYJ103 ERJ3GEYJ102 ERJ3GEYJ154 150K ERJ3GEYJ390 ERJ3GEYJ390 ERJ3GEYJ330 ERJ3GEYJ181 ERJ3GEYJ181 ERJ3GEYJ681 ERJ3GEYJ155 1.5M JMP9 PQ4R10XJ000 PQ4R10XJ562 5.6K ERJ3GEYJ472 4.7K ERJ3GEY0R00 ECUV1H100DCV 10P ECUV1H220JCV (CAPACITORS) ECUV1C104KBV 0.1 ECQE2E474KZ 0.47 ECUV1H103KBV 0.01 ECUV1H103KBV 0.01 ECKD2H681KB 680P...
  • Page 95 Ref. No. Part No. Part Name & Description Remarks ECUV1H153KBV 0.015 ECUV1C823KBV 0.082 ECUV1C104KBV 0.1 ECUV1H333KBV 0.033 ECUV1C105ZFV ECUV1C105ZFV ECUV1C105ZFV ECUV1C823KBV 0.082 ECUV1H060DCV 6P ECUV1H270JCV ECUV1H100DCV 10P ECUV1H100DCV 10P ECUV1H330JCV ECUV1A475KB ECUV1H060DCV 6P ECUV1H100DCV 10P ECUV1H100DCV 10P ECUV1H030CCV 3P ECUV1H2R0CCV 2 ECUV1H100DCV 10P ECUV1H2R0CCV 2 ECUV1A475KB...
  • Page 96 Ref. No. Part No. Part Name & Description Remarks PQGP10225Z4 PANEL, LCD AS-HB PQKM10587V5 CABINET BODY ABS-HB PQHS10553Z TAPE, DOUBLE SIDE PQHS10554Z SPACER, LCD PQBC10375Z1 PUSH BUTTON, NAVI PQSX10224Q KEYBOARD SWITCH, 20KEY PQHS10467Z COVER, SP NET L0AD02A00016 SPEAKER PQSA10133Z ANTENNA PQJT10204Z TERMINAL (L) PQJT10205Z...
  • Page 97 Ref. No. Part No. Part Name & Description Remarks ERJ3GEY0R00 ERJ3GEYJ102 ERJ3GEY0R00 ERJ3GEYJ330 ERJ3GEYJ153 ERJ3GEY0R00 ERJ6RSJR10V ERJ3GEY0R00 ERJ3GEYJ2R2 ERJ3GEY0R00 (CAPACITORS) ECUV1A475KB ECUV1C104KBV 0.1 ECUV1C104KBV 0.1 ECST0JY475 ECUV1H100DCV 10P ECUV1C104KBV 0.1 ECUV1H100DCV 10P ECUV1H100DCV 10P ECUV1H100DCV 10P ECUV1H100DCV 10P EEE1AA221P EEE1AA221P ECUV1H1R0CCV 1 ECUV1H180JCV ECUV1C104KBV 0.1...
  • Page 98 35.3. Charger Unit 35.3.1. Cabinet and Electrical Parts Ref. No. Part No. Part Name & Description Remarks PQLV30018ZM1 ACCESSORY PARTS, CHARGER UNIT PQGG10155Y5 GRILLE ABS-HB PQKM10591Y3 CABINET BODY PS-HB PQKE10356Z1 GUIDE, CHARGE TERMINAL CASE POM-HB PQJT10206Z CHARGE TERMINAL PQHX10991Z CUSHION, URETHANE FORM PQMH10426Z WEIGHT PQYF10563Z3...
  • Page 99 35.5. Fixtures and Tools Part No. Part Name & Description Remarks PQZZTCD705BX I2C PCB PQZZ1CD705BX RS232C CABLE PQZZ2CD705BX CLIP CABLE PQZZ3CD705BX DC CABLE PQZZTCD420NZ BATCH FILE Note: CHECK PROCEDURE (BASE UNIT) (), and CHECK PROCEDURE (HANDSET) 35.6. Memo 36. SCHEMATIC DIAGRAM (BASE UNIT) 37.
  • Page 100 SYDA 9 SYDA RXDA SYEN 10 SYEN D10P (15) 11 GND RXDSG (20) SYRI RXDA 4.7u +2.8V RX-DATA DRON TP15 +2.8V BC847B FREQ 10.368MHz 10.368MHz burst 428 s 406 s peak +3.1V : No Components KX-TCD420NZM SCHEMATIC DIAGRAM (BASE UNIT)
  • Page 101 Frequency 324KHz 4.3V 4.1V DC TP14 47uH 2.4V BATTERY+ BATTERY- 3.3K 2.65V 10uH CHARGE+ CHARGE- 10uH ’BATT’ K0.1 TP12 ’SDA’ K0.1 ’SCL’ ’VBACK’ TP18 ’GND’ TP10 PL.13 81 PL.13 P0.5(AD4N) PL.14 51:P0.6(AD4P) 82 PL.14 P0.4(ADBAT) PL.15 83 PL.15 ADRSSI PL.16 84 PL.16 ADREF 2.65V...
  • Page 102 TP11 K0.1 R5 330 C4 K0.1 R7 330 R1 2.2K K0.1 K0.1 (24) K0.1 R17 0 K0.1 1 SP+ 2 SP- R20 0 TP16 TP17 (25) (26) ’POWER’ (27) (28) (29) A201 TP15 R24 0 VCC_PA (30) TXDA 5 RSSI PAON R18 33 6 VCC_OC...
  • Page 103 TP11 K0.1 R5 330 C4 K0.1 R7 330 R1 2.2K K0.1 K0.1 (24) K0.1 R17 0 K0.1 1 SP+ 2 SP- R20 0 TP16 TP17 (25) (26) ’POWER’ (27) (28) (29) A201 TP15 R24 0 VCC_PA (30) TXDA 5 RSSI PAON R18 33 6 VCC_OC...
  • Page 104 DC_PLUG Charge_plus Charge_minus pinL SCHEMATIC DIAGRAM (CHARGER UNIT)
  • Page 105 34 33 32 31 30 29 JMP8 JMP9 JMP7 SCLK 11 12 1314 15 16 17 JMP51 JMP52 JMP53 JMP50 BELL RESET BELL LED (BBIC:7 (BBIC: 81) (BBIC: 143) (BBIC: 76) 10.368 MHz) KX-TCD420NZM CIRCUIT BOARD (BASE UNIT) Component View...
  • Page 106 CHARGE IC3 Output (2.8V) CHARGE+ J104 J101 J103 J102 J105 Digital CHARGE TP13 CHARGE Volt Meter TP15 TP11 TP106 TP10 IC2 Input IC2 Output RF Clock (5.5V) (10.368MHZ) (4.0V) KX-TCD420NZM CIRCUIT BOARD (BASE UNIT) Flow Solder Side View...
  • Page 107 TP12 TP14 RF Clock (BBIC: 27) (2.65V) (TP3) (4V) (BBIC: 23 10.368 MHz) TP16 TP12 TP13 TP17 TP14 TP19 TP18 TP10 TP2: SP+ TP1: SP- (BBIC: 41) (BBIC: 42) KX-A142NZM CIRCUIT BOARD (HANDSET) Component View...
  • Page 108 TALK REDIAL BOOK LEFT DOWN RIGHT PROG POWER KX-A142NZM CIRCUIT BOARD (HANDSET) Flow Solder Side View...
  • Page 109 CIRCUIT BOARD (CHARGER UNIT) Component View...
  • Page 110 CIRCUIT BOARD (CHARGER UNIT) Flow Solder Side View...
  • Page 111 Marked...
  • Page 112 J104 J101 J103 J102 J105 CHARGE TP13 CHARGE TP15 TP11 TP106 TP10 Marked...
  • Page 113 Marked...
  • Page 114 TALK REDIAL BOOK LEFT DOWN RIGHT PROG POWER Marked...
  • Page 115 Marked Marked (Component View) (Flow Solder Side View)
  • Page 116 Base PCB J105 J102 J103 J104 J103 GND MODE SCL SDA VDD Clip...
  • Page 117 Microsoft Windows 2000 [Version 5.00.2195] (C) Copyright 1985-2000 Microsoft Corp. C: >cd dect C: DECT>SET RTX_COM=1 C: DECT>DOSKEY C: DECT>initbspin C: DECT>call wreeprom.bat 00 25 00 C: DECT>call wreeprom.bat 00 26 00 C: DECT>_...
  • Page 118 CHG terminal is properly fit in the cabinet. CHG terminal comes out of rib by pulling black lead wire when opening the cabinet and turning the PCB over. The terminal cannot have enough elastic force, cannot have good contact with handset, and it will result in charge problem.
  • Page 119 AF Volt Meter Tel Simulator DECT tester CMD60 (N) (O) (H) (I) (J) (K) (L) AF Generator JMP4 JMP2 JMP6 JMP1 JMP5 JMP3 JMP8 JMP9 JMP7 SCLK JMP51 JMP52 JMP53 JMP50...
  • Page 120 Digital Volt Meter 12Ω/2W (D) (E) (F) (G) (H) (N) (O) Digital To PC (JIG) Digital Volt Meter Volt Meter J102 J103 J104 J101 J105 CHARGE TP13 CHARGE Frequency TP15 Counter TP11 TP106 TP10 Digital Volt Meter DTMF tester (F) (N) (O) Simulator...
  • Page 121 12Ω/2W Digital Volt Meter...
  • Page 122 (F) (G) 2.20V ~ 2.40V TP16 TP12 TP13 TP17 TP14 TP19 AF SG DECT TESTER CMD60 TP18 TP10 Digital DECT tester Volt Meter CMD60 AF Volt Meter Oscilloscope DECT TESTER CMD60 Digital (I) (J) (K) (L) (M) Volt Meter (N) (O) (P) Frequency (D) (E) Current...
  • Page 123 Flash Register CONTACT A0-A17 ADDRES BBIC 10.368 PROM D0-D7 DATA VUNREG CTRL 4.0V to AC Adaptor Reg. EEPROM 4.0V Page 103 104 106 105 107 2.65V Reg. 2.65V 11 14 13 12 Serial Flash ROM KX-TCD420NZM BLOCK DIAGRAM (BASE UNIT)
  • Page 124 Speech Burst RXDA Decoding Decoding EARPIECE TXDA Speech Burst Encoding Encoding Module RSSI ADPCM SYRI Codec Interface Analog SYEN Filter Front XTAL CHARGE CHARGE CHARGE 10.368 CONTACTS CIRCUIT CHARGE DETECT ON SWITCH EEPROM VDDBAT 53~55, 59, 60 BATTERY SWITCHED ROWS TERMINAL SUPPLY SWITCH...
  • Page 125 +60V:DC ON-HOOK ON-HOOK: 0V +10V:DC OFF-HOOK LINE VOLTAGE 60V DC OFF-HOOK: about DC 9.8V JMP1 680p/500V 100K JMP9 5.6k JMP2 JMP3 2.2K 680p/500V JMP6 JMP4 0V: ON-HOOK +0.7V DC: OFF-HOOK OPTION4 RLY1 +2.8V K0.1 500V1000P 680K 500V1000P K0.1 680K +2.8V 120K J150P +4.0V DC...
  • Page 126 SYDA 9 SYDA RXDA SYEN 10 SYEN D10P (15) 11 GND RXDSG (20) SYRI 4.7u RXDA +2.8V RX-DATA DRON TP15 +2.8V BC847B FREQ 10.368MHz 10.368MHz burst 428 s 406 s peak +3.1V : No Components KX-TCD420NZM SCHEMATIC DIAGRAM (BASE UNIT)

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