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Panasonic KX-TCD220SLT Service Manual

Digital cordless answering system
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Telephone Equipment
KX-TCD220SLT
KX-TCA122EXT
KX-TCA121EXT
Digital Cordless Answering System
Titanium Black Version
(for Switzerland)
© 2005 Panasonic Communications Co., Ltd. All
rights
reserved.
distribution is a violation of law.
ORDER NO. KM40503650CE
Unauthorized
copying
and

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Summary of Contents for Panasonic KX-TCD220SLT

  • Page 1 ORDER NO. KM40503650CE Telephone Equipment KX-TCD220SLT KX-TCA122EXT KX-TCA121EXT Digital Cordless Answering System Titanium Black Version (for Switzerland) © 2005 Panasonic Communications Co., Ltd. All rights reserved. Unauthorized copying distribution is a violation of law.

  • Page 2: Table Of Contents

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Note: Because CONTENTS 4 to 11 are the extracts from the Operating Instructions of this model, they are subject to change without notice. Please refer to the original Operating Instructions for further information. CONTENTS Page...
  • Page 3 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 15.2. The Setting Method of JIG (Base Unit) 30.1. PREPARATION 15.3. Adjustment Standard (Base Unit) 30.2. FLAT PACKAGE IC REMOVAL PROCEDURE 15.4. Check Point (Charger Unit) 30.3. FLAT PACKAGE IC INSTALLATION PROCEDURE 15.5. Adjustment Standard (Charger Unit) 30.4.

  • Page 4: About Lead Free Solder (Pbf: Pb Free)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 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

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 1.2. How to Recognize that Pb Free Solder is Used (Example: Handset P.C.B.) Marked PQUP11278Z BAT GND POWER VDD2 VDD1 C114 C115 C120 C113 C109 C122 JTAG SP_TEST1 C100 C103 SP_TEST2 VDD3 R21 R20 (Component View) Note: The location of the “PbF”...

  • Page 6: Battery

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 4 BATTERY 4.1. Battery Installation 1. Insert the batteries negative ( ) terminal first. 2. Close the handset cover. Note: · Use only rechargeable Ni-MH batteries P03P (HHR-4EPT). 4.2. Battery Charge Place the handset on the base unit for about 7 hours before initial use.

  • Page 7: Battery Life

    7 hours, the batteries must be replaced. Important: · We recommend the use of Panasonic rechargeable Ni-MH batteries P03P (HHR-4EPT). If you install non-rechargeable batteries and start charging, the batteries may leak electrolyte.

  • Page 8: Location Of Controls

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 5 LOCATION OF CONTROLS 5.1. Base Unit 5.2. Handset Note: · Up to 3 menu items can be displayed at a time. To select a menu item not shown on the current page, scroll up or down by pressing the navigator key, , respectively.

  • Page 9: Settings

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 6 SETTINGS Important Information General · Use only the AC adaptor included with this product. · Do not connect the AC adaptor to any AC outlet other than a standard 220 - 240 V AC outlet.

  • Page 10: Connections

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 6.1. Connections 6.1.1. Base Unit When the AC adaptor is connected, a short beep will be heard. If it is not heard, check the connections. Important: · Use only the AC adaptor PQLV19CEX and telephone line cord supplied with this unit.

  • Page 11: Guide To Settings

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 6.2. Guide to Settings For your reference, a chart of all items which can be customised for the base unit and the handset is printed below. · When customising the base unit and the handset, the current item or setting is indicated by 6.2.1.
  • Page 12 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 6.2.2. Handset Note: · Up to 3 menu items can be displayed at a time. To select a menu item not shown on the current page, scroll up or down by pressing the navigator key,...

  • Page 13: Ringer Volume

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 6.3. Ringer Volume 6.3.1. Base Unit 6.3.2. Handset Note: · Alarms will sound and the handset will ring for intercom calls and when paged even if the ringer is turned off.

  • Page 14: Night Mode

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 6.4. Night Mode Night mode allows you to select a block of time during which the base unit and the handset will not ring for outside calls. This feature is useful for times when you do not want to be disturbed, for example, while sleeping. Night mode can be set independently for the handset and the base unit.

  • Page 15: Pin Code

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 6.5. PIN Code 6.5.1. Base Unit For security, the base unit PIN must be entered when changing certain settings. The default PIN is “ ”. For Service Hint: *: If the current 4-digit Base Unit PIN is forgotten, follow the procedures below.

  • Page 16: Reset

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 6.6. Reset 6.6.1. Base Unit Note: · The following items will be deleted or reset to their default settings: − − − − Base Unit (P.11) Settings − − − − All SMS messages − − − − Caller list ·...

  • Page 17: Key Lock

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 6.7. Key Lock The handset can be locked so that no calls or settings can be made. Incoming calls can be answered, but all other functions are disabled while key lock is on. Note: · Calls to emergency numbers cannot be made until key lock is turned off.

  • Page 18: Turning Call Bar On/Off (Call Prohibition)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 6.11. Turning Call BAR On/Off (Call Prohibition) This feature prohibits making outside calls. When call bar is turned on, only intercom calls and calls to emergency numbers can be made. Note: · When call bar is turned on, is displayed.

  • Page 19: Ars (Automatic Route Selection)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 6.14. ARS (Automatic Route Selection) Different telephone carriers charge different rates for call to different areas. If you use different telephone carriers in an effort to save costs, automatic route selection can automatically dial the appropriate carrier code when you make calls to certain area codes according to the way you program this feature.

  • Page 20: Display

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 7 DISPLAY 7.1. Display Icons Various icons appear on the handset display to indicate the current status of the unit. 7.2. Caller ID Display Important: · This unit is Caller ID compatible. To use Caller ID features (such as displaying caller phone numbers), you must subscribe to Caller ID service.

  • Page 21: Operations

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 8 OPERATIONS 8.1. Turning the Power On/Off Power on Press for about 1 second. · The display will change to the standby mode. Power off Press for about 2 seconds. · The display will go blank.

  • Page 22: Phonebook

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 8.4. Phonebook The phonebook allows you to make calls without having to dial manually. You can add 200 names and phone numbers to the phonebook, assign each phonebook entry to the desired category, and search for phonebook entries by name or category.
  • Page 23 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT...
  • Page 24 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 8.4.3. Editing Entries in the Phonebook Phonebook entries can be edited after you have saved them. You can change the name, phone number, and category. Changing a name, phone number, category 8.4.4. Erasing Entries from the Phonebook...

  • Page 25: Copying Phonebook Entries To Other Handsets

    Only the one touch dial assignment is erased. The corresponding phonebook entry is not erased. 8.4.8. Copying Phonebook Entries to Other Handsets Phonebook entries can be copied from the handset to the phonebook of a compatible Panasonic handset. Copying One Entry Copying All Entries Note: ·...

  • Page 26: Registering A Handset To A Base Unit

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 8.5. Registering a Handset to a Base Unit To Register an Additional Handset to a Base Unit (Easy Registration) The included handset and base unit are preregistered. After purchasing an additional handset, register it to the base unit.

  • Page 27: Cancelling A Base Unit

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 8.5.2. Cancelling a Base Unit A handset can be registered to a maximum of 4 base units. A handset can cancel a base unit that it is registered to. This allows the handset to “forget” the base unit.

  • Page 28: Sms (Short Message Service)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 9 SMS (Short Message Service) SMS allows you to send and receive text messages between other fixed-line and mobile phones that support compatible SMS networks and features. Messages can be forwarded by your SMS provider to fax machines and e-mail address.

  • Page 29: Available Character Entries For Sms

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 9.2. Available Character Entries for SMS...

  • Page 30: Sending A Saved Message

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 9.3. Sending a Saved Message Cross Reference: Writing and Sending a New Message (P.28) 9.4. Editing and Sending a Saved Message Cross Reference: Writing and Sending a New Message (P.28) 9.5. Erasing Saved Messages...

  • Page 31: Receiving A Message

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 9.6. Receiving a Message When an SMS message is received: - a tone is heard (if the ringer is turned off, this tone is not heard) - “ ” is displayed is displayed 9.7. Reading a Received Message Note: ·...

  • Page 32: Changing Sms Message Centre Numbers

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 9.10. Changing SMS Message Centre Numbers SMS message centre telephone numbers must be stored in order to send and receive SMS messages. The following numbers (used for SMS service provided by Cablecom) are pre programmed in this unit. You can change them if necessary.

  • Page 33: Answering System

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 10 Answering System 10.1. Turning the Answering System On/Off 10.2. Greeting Message 10.2.1. Using a prerecorded greeting message 10.2.2. Playing back the greeting message...

  • Page 34: Listening To Message

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 10.3. Listening to Message Messages are stored and played back chronologically, from oldest message to newest. 10.3.1. Listening to new/all message 10.3.2. Repeating, skipping, stopping, erasing a message during playback 10.3.3. Erasing All Messages...

  • Page 35: Using Direct Commands

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 10.4. Using Direct Commands...

  • Page 36: Remote Operation

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 10.5. Remote Operation 10.5.1. Turning remote operation on/off 10.5.2. Turning on the answering system remotely...

  • Page 37: Troubleshooting

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 11 TROUBLESHOOTING If you still have difficulties after following the instructions in this section, disconnect the AC adaptor and turn off the handset, then reconnect the AC adaptor and turn on the handset. Cross Reference: (*1) Registering a Handset to a Base Unit (P.26)
  • Page 38 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Cross Reference: (*10) Battery Charge (P.6) (*11) Battery Replacement (P.7) (*12) Caller ID Display (P.20) (*13) Cancelling a Base Unit (P.27) (*14) Cancelling a Handset (P.26) (*15) PIN Code (P.15)
  • Page 39 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Cross Reference: (*16) Changing SMS Message Centre Numbers (P.32) (*17) Erasing Saved Messages (P.30) (*18) Erasing Received Messages (P.31) (*19) Turning SMS On/Off (P.32) Cross Reference: (*20) Erasing All Messages (P.34) (*21) Turning remote operation on/off (P.36)

  • Page 40: Disassembly Instructions

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 12 DISASSEMBLY INSTRUCTIONS 12.1. Base Unit Shown in Fig.- To Remove Remove Cabinet Cover Screws (2.6 × 10)..(A) × 4 Main P.C. Board Solders Main P.C. Board Small P.C. Board Screw (2.6 x 10).....( B) x 1...

  • Page 41: Handset

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 12.2. Handset Shown in Fig.- To Remove Remove Cabinet Cover Screws (2 × 10)..(C) × 2 Follow the procedure. Main P.C. Board Screw (2 × 10)....( D) × 1 Screws (2 × 10).....( E) × 2 Tapes and Solders Main P.C.

  • Page 42: Charger Unit

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 12.3. Charger Unit Shown in Fig.- To Remove Remove Cabinet Cover Screws (2.6 × 10)..(F) × 2 Main P.C. Board Solders Main P.C. Board...

  • Page 43: How To Replace The Handset Lcd

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 13 HOW TO REPLACE THE HANDSET LCD...

  • Page 44: Troubleshooting Flowchart

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 14 TROUBLESHOOTING FLOWCHART Flow Chart Cross Reference: Check Power (P.45) Bell Reception (P.52) Check Battery Charge (P.46) Check Link (P.47) Check Handset Transmission (P.51) Check Handset Reception (P.51) SIGNAL ROUTE (P.77) Check TAM Operation (P.52)

  • Page 45: Check Power

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 14.1. Check Power 14.1.1. Base Unit Is the AC Adaptor inserted into AC outlet? (Check AC Adaptor’s specification.) Cross Reference: Power Supply Circuit (P.72) 14.1.2. Handset Cross Reference: Power Supply Circuit/Reset Circuit (P.75)

  • Page 46: Check Battery Charge

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 14.2. Check Battery Charge 14.2.1. Base Unit Cross Reference: Charge Circuit (P.75) 14.2.2. Handset Cross Reference: Check Power (P.45) Charge Circuit (P.75) 14.2.3. Charger Unit Cross Reference: Charge Circuit (P.75)

  • Page 47: Check Link

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 14.3. Check Link 14.3.1. Base Unit...
  • Page 48 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Cross Reference: Power Supply Circuit (P.72) Check Point (Base Unit) (P.53)
  • Page 49 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 14.3.2. Handset...
  • Page 50 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Cross Reference: Power Supply Circuit/Reset Circuit (P.75) Check Point (Handset) (P.60)

  • Page 51: Check Handset Transmission

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 14.4. Check Handset Transmission Cross Reference: SIGNAL ROUTE (P.77) 14.5. Check Handset Reception Cross Reference: HOW TO CHECK THE HANDSET SPEAKER OR RECEIVER (P.69). SIGNAL ROUTE (P.77) 14.6. Check Caller ID Cross Reference: SIGNAL ROUTE (P.77)

  • Page 52: Bell Reception

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 14.7. Bell Reception 14.7.1. Base Unit 14.7.2. Handset Cross Reference: Telephone Line Interface (P.73) Check Link (P.47) HOW TO CHECK THE HANDSET SPEAKER OR RECEIVER (P.69) 14.8. Check TAM Operation Cross Reference: Power Supply Circuit (P.72)

  • Page 53: Troubleshooting By Symptom (Base Unit And Charger Unit)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 15 TROUBLESHOOTING BY SYMPTOM (BASE UNIT AND CHARGER UNIT) If your unit has below symptoms, follow the instructions in remedy column. Remedies depend on whether you have DECT tester (*1) or not. Note: (*1) A general repair is possible even if you don’t have the DECT tester because it is for confirming the levels, such as Acoustic level in detail.
  • Page 54 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Items Check Procedure Check or Point Replace Parts (G)* Hookswitch Check with 1. Connect CN1 (Telephone Socket) to Tel-simulator which is connected with CN1, L6, L7, 600 Ω. DC Characteristics Q4, R23, R25, Q5, R26, R28, 2.
  • Page 55 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Items Check Procedure Check or Point Replace Parts Frequency Drift Follow steps 1 to 6 of (I). IC2, IC8, R124, Confirmation 7.Confirm that the frequency drift is < ± 30kHz/ms. R125, C153, C140, C141, DA1, C142,...
  • Page 56 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Items Check Procedure Check or Point Replace Parts Power RAMP Follow steps 1 to 6 of (I). IC2, IC8, R124, Confirmation 7.Confirm that Power RAMP is matching. R125, C153, C140, C141, DA1, C142, C143, C144, L3,...

  • Page 57: The Setting Method Of Jig (Base Unit)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 15.2. The Setting Method of JIG (Base Unit) 15.2.1. Preparation 15.2.1.1. Equipment Required · DECT tester: Rohde & Schwarz, CMD 60 is recommended. · Frequency counter: it must be precise to be able to measure 1Hz (precision; ±4ppm).

  • Page 58: Adjustment Standard (Base Unit)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT...

  • Page 59: Check Point (Charger Unit)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 15.4. Check Point (Charger Unit) Items Check Procedure Check or Point Replace Parts Charging Check 1. Connect Charge Contact 12Ω/2W resistor between charge+ and charge-. D11, R11, R12 2. Measure and confirm voltage across the resistor is 2.85V ± 0.2V.

  • Page 60: Troubleshooting By Symptom (Handset)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 16 TROUBLESHOOTING BY SYMPTOM (HANDSET) If your unit has below symptoms, follow the instructions in remedy column. Remedies depend on whether you have DECT tester (*1) or not. Note: (*1) A general repair is possible even if you don’t have the DECT tester because it is for confirming the levels, such as Acoustic level in detail.
  • Page 61 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Items Check Procedure Check or Point Replace Parts (F) Charge Control Check & 1. Apply 6V between J3(+) and J4(-) with DC power supply and set current limit to IC1, Q4, Q5, Charge Current Monitor 250mA.
  • Page 62 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Items Check Procedure Check or Point Replace Parts (L)* Modulation Check and Follow steps 1 to 3 of (K) above. IC1, R54, C62, Adjustment 4.Confirm that the B-Field Modulation is -350 ~ -400/+320 ~ +370kHz/div using C123, C60, data type Fig 31.
  • Page 63 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Items Check Procedure Check or Point Replace Parts (T) SP phone Audio Check 1. Link to Base which is connected to Line Simulator. IC1, C37, C68, and Confirmation C91, R25, 2. Set line voltage to 48V and line current to 40mA.

  • Page 64: Troubleshooting For Speakerphone

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 16.2. Troubleshooting for Speakerphone When the customer’s telephone line corresponds to the following conditions, and the transmission signal of SP-Phone is interrupted, performing the next set up to a cordless handset will improve it to some extent.

  • Page 65: The Setting Method Of Jig (Handset)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 16.3. The Setting Method of JIG (Handset) 16.3.1. Preparation 16.3.1.1. Equipment Required · DECT tester: Rohde & Schwarz, CMD 60 is recommended. · Frequency counter: it must be precise to be able to measure 1Hz (precision; ±4ppm).

  • Page 66: Adjustment Standard (Handset)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT A201 C44 C62 C123 REV_TEST2 REV_TEST1 C117 C116 C118 C111 C101 C102 C108 C112 C104 C119 C107...

  • Page 67: Things To Do After Replacing Ic

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 17 THINGS TO DO AFTER REPLACING IC Cautions: Since this page is common to each country, it may not apply to some models in your country. The contents below are the minimum adjustments required for operation.

  • Page 68: Rf Specification

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 18 RF SPECIFICATION 18.1. Base Unit Item Value Refer to -. * Remarks TX Power 20 dBm ~ 25 dBm Check Point (Base Unit) (I) Modulation -350 ~ -400/+320 ~ +370 kHz/div Check Point (Base Unit) (J)

  • Page 69: How To Check The Handset Speaker Or Receiver

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 19 HOW TO CHECK THE HANDSET SPEAKER OR RECEIVER 1. Prepare the digital voltmeter, and set the selector knob to ohm meter. 2. Put the probes at the speaker terminals as shown below. 20 FREQUENCY TABLE (MHz)
  • Page 70 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT...

  • Page 71: Block Diagram (Base Unit)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 22 CIRCUIT OPERATION (BASE UNIT) 22.1. Outline Base Unit consists of the following ICs as shown in BLOCK DIAGRAM (BASE UNIT) (P.70). · DECT BBIC (Base Band IC): IC8 − − − − Handling all the audio, signal and data processing needed in a DECT base unit −...

  • Page 72: Power Supply Circuit

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 22.2. Power Supply Circuit The power is supplied to the DECT BBIC, RF Module, EEPROM and Charge Contact from AC Adaptor (+6V) as shown in Fig.101. The power supply is as follows; · DECT BBIC (IC8): CN1 (+6V) →...

  • Page 73: Telephone Line Interface

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 22.3. Telephone Line Interface <Function> · Bell signal detection · Clip signal detection · ON/OFF hook circuit · Audio circuits · DTMF tone signal circuits Bell & Clip (: Calling Line Identification Presentation: Caller ID) signal detection: In the standby mode, Q4 is open to cut the DC loop current and decrease the ring load.

  • Page 74: Block Diagram (Handset)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 23 BLOCK DIAGRAM (HANDSET) SPEAKER RXDA Speech Burst Decoding Decoding TXDA Speech Burst RECEIVER Module Encoding Encoding RSSI ADPCM SYDA Codec SYEN Analog Interface Filter SYCL Front CHARGE(+) CHARGE XTAL CHARGE CHARGE CIRCUIT CONTACTS CHARGE DETECT Q4,Q5,Q9 10.368...

  • Page 75: Circuit Operation (Handset)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 24 CIRCUIT OPERATION (HANDSET) 24.1. Outline Handset consists of the following ICs as shown in BLOCK DIAGRAM (HANDSET) (P.74). · DECT BBIC (Base Band IC): IC1 − − − − All data signals (forming/analyzing ACK or CMD signal) −...

  • Page 76: Circuit Operation (Charger Unit)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 25 CIRCUIT OPERATION (CHARGER UNIT) 25.1. Power Supply Circuit The power supply is as shown.

  • Page 77: Signal Route

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 26 SIGNAL ROUTE...
  • Page 78 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT...

  • Page 79: Cpu Data (Base Unit)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 27 CPU DATA (BASE UNIT) 27.1. IC8 (BBIC) Pin No Description Connection at Normal mode at Reset mode INT1n/P1_1 I-PU VDDIO SDA1/P2_5 D,I/O SCL1/P2_4 INT5n/P1_5 I-PU INT2n/P1[2] P1[2] Xtal1 Xtal1 VSSRF RFCLKp Hi-Z RSSI/RFCLKm RSSI...
  • Page 80 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Pin No Description Connection at Normal mode at Reset mode ADC2 ADC2 ADC0 ADC0...

  • Page 81: Cpu Data (Handset)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 28 CPU DATA (HANDSET) 28.1. IC1 (BBIC) Pin No Description Connection at Normal mode at Reset mode INTln/P1[1] ROW1 I-PU VDDIO LED1/PWM0/P2[0] PWM0 I-PU LED2/PWM1/P2[1] LCD_CSB I-PU LED3 LED_BKL LED_BIAS/P3[6]/PD LED_BIAS I-PD SDA1/P2[5] D,I/O LCD_SI...
  • Page 82 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Pin No Description Connection at Normal mode at Reset mode LDO1_Sense LDO1_Sense AVS2 AVD2 LSRn/REF LSRp/REF LSRp MICn RINGING VREFm VBUF VBUF AGND AGND MICp MICp VREFp CIDINp P3[0] D,I/O COL0 I-PD P1[4]/INT4n Key_LED P1[3]/INT3n...

  • Page 83: Engineering Mode

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 29 ENGINEERING MODE 29.1. Base Unit...
  • Page 84 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Note: *: When you enter the address, please refer to the table below. Desired Number Input Keys Desired Number Input Keys [R] + 0 [R] + 1 [R] + 2 [R] + 3 [R] + 4 [R] + 5 ex.)
  • Page 85 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Items Description C-ID (FSK) sensitivity FSKGain_shiftgain C-ID (DTMF) sensitivity Foutgains:HPFilter Foutgains SMS (FSK) receiving sensitivity FSKGain_shiftgain SMS (FSK) sending level wFskAttn:Signal Output Attenuation (DSP parameter) Frequency Setting value of FREQ_TRIM_REG Bell length Time until it stops bell.

  • Page 86: Handset

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 29.2. Handset...
  • Page 87 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Note: *: When you enter the address, please refer to the table in Note: of ENGINEERING MODE (P.83). ex.) Items (*4) Address Default Data New Data Possible Adjusted Possible Adjusted Remarks Value MAX (hex) Value MIN (hex)

  • Page 88: How To Replace The Flat Package Ic

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 30 HOW TO REPLACE THE FLAT PACKAGE IC Even if you do not have the special tools (for example, a spot heater) to remove the Flat IC, with some solder (large amount), a soldering iron and a cutter knife, you can easily remove the ICs that have more than 100 pins.

  • Page 89: Flat Package Ic Installation Procedure

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 30.3. FLAT PACKAGE IC INSTALLATION PROCEDURE 1. Temporarily fix the FLAT PACKAGE IC, soldering the two marked pins. *Check the accuracy of the IC setting with the corresponding soldering foil. 2. Apply flux to all pins of the FLAT PACKAGE IC.

  • Page 90: Cabinet And Electrical Parts Location (Base Unit)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 31 CABINET AND ELECTRICAL PARTS LOCATION (BASE UNIT)

  • Page 91: Cabinet And Electrical Parts Location (Handset)

    (HANDSET) Note: (*1) The rechargeable Ni-MH battery P03P (HHR-4EPT) is available through sales route of Panasonic. (*2) Attach the spacer (No. 122) to the exact location described above. (*3) This cable is fixed by welding. Refer to HOW TO REPLACE THE HANDSET LCD (P.43).

  • Page 92: Cabinet And Electrical Parts Location (Charger Unit)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 33 CABINET AND ELECTRICAL PARTS LOCATION (CHARGER UNIT)

  • Page 93: Accessories And Packing Materials

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 34 ACCESSORIES AND PACKING MATERIALS 34.1. KX-TCD220SLT...

  • Page 94: Kx-Tca121Ext

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 34.2. KX-TCA121EXT...

  • Page 95: Terminal Guide Of The Ics, Transistors And Diodes

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 35 TERMINAL GUIDE OF THE ICs, TRANSISTORS AND DIODES 35.1. Base Unit 35.2. Handset 35.3. Charger Unit...

  • Page 96: Replacement Parts List

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 36 REPLACEMENT PARTS LIST 1. RTL (Retention Time Limited) Ref. Part No. Part Name & Description Remarks Note: PQBC10415Z1 PUSH BUTTON ABS-HB The marking (RTL) indicates that the Retention Time is PQSA10154Z ANTENNA PQKF10631Z3 CABINET COVER PS-HB limited for this item.
  • Page 97 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks ERJ3GEYJ335 3.3M ECJ0EC1H220J ERJ3GEYJ273 ECJ0EC1H100D D0GA822JA015 8.2K ECUV1A224KBV 0.22 ERJ3GEYJ182 1.8K ECUV1H100DCV ERJ12YJ120 ECUV1C104KBV ERJ12YJ270 ECUE1A223KBQ 0.022 ERJ3GEYJ104 100K...

  • Page 98: Handset

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Ref. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description PQWI2A130EXR IC (EEPROM) (*1) C195 ECUV1H100DCV (TRANSISTORS) C196 ECUV1H100DCV PQVTFDN335N TRANSISTOR(SI) C197 ECUV1H100DCV B1ADGE000004 TRANSISTOR(SI) C198 ECUV1H100DCV B1ADGE000004 TRANSISTOR(SI)

  • Page 99: Charger Unit

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Ref. No. Part No. Part Name & Description Ref. No. Part No. Part Name & Description ERJ3GEYJ684 680K C108 ECJ0EC1H100D D0GA104JA015 100K C109 ECJ0EC1H100D ERJ3GEY0R00 C111 ECJ0EC1H101J 100P ERJ3GEY0R00 C112 ECJ0EC1H101J 100P D0GA103JA015 C113 ECUV1H101JCV...

  • Page 100: Fixtures And Tools

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Ref. Part No. Part Name & Description Remarks PQQW12846W LEAFLET, RECHARGE PQPP10116Z PROTECTION COVER (for Base Unit) PQPP10084Z PROTECTION COVER (for Handset) PQPK14581Z GIFT BOX 36.4.2. KX-TCA121EXT Ref. Part No. Part Name & Description Remarks...

  • Page 101: For Schematic Diagram

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 37 FOR SCHEMATIC DIAGRAM 37.1. Base Unit (SCHEMATIC DIAGRAM (BASE UNIT)) Notes: 1. DC voltage measurements are taken with voltmeter from the negative voltage line. 2. This schematic diagram may be modified at any time with the development of new technology.

  • Page 102: Schematic Diagram (Base Unit)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 38 SCHEMATIC DIAGRAM (BASE UNIT) 33uH (2125) DC/TEL_JACK 33uH (2125) (2125) C101 R106 RLY1 180K K1000P K1500P C102 C_ID, Bell Signal R107 180K K1000P K1500P +2.5V 7.8V 3.3V +3.3V VDD3 VOUT R144 VOUT C167 (1005)
  • Page 103 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT Loop Current LINE_DC (1005) 100K C130 2.2K K1.0 100K 1.8K (2125) 100K TX_AF ANT_2 ANT_1 +2.5V RX_AF R121 R120 TP10 (1005) 33nH K220P 3.3V +3.3V C138 (2125) 100K (1005) (1005) C137 K220P Bell signal R117 +2.5V...

  • Page 104: Schematic Diagram (Handset)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 39 SCHEMATIC DIAGRAM (HANDSET) +3.3V VDD3 BATTERY Charge Current BATTERY+ 47uH 5.6nH SM140A-T +2.5V VDD2 +1.8V VDD1 5.6K BATTERY- AVS_sense 5.6K 115kHz (TALK mode) TP20 CHARGE+ 10uH (When on charge) CHARGE- 1005 10uH (1005) C114...
  • Page 105 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT BATTERY A201 33nH 10.368MHz +2.5V 2.5V RESET ANT2 (1005) TX DATA VCCPA ANT1 RESET RFmodule VCC_OC TXDA RSSI RSSI (1005) RFCLK (1005) RX DATA 2.2K (1005) 1.0V DC supply to MIC TP22 K0.1 TX-AF TX-AF...

  • Page 106: Schematic Diagram (Charger Unit)

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 40 SCHEMATIC DIAGRAM (CHARGER UNIT) Charge_plus DC_PLUG Charge_minus NC : No Components SCHEMATIC DIAGRAM (CHARGER UNIT)
  • Page 107 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT...
  • Page 108 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT...
  • Page 109 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT A201 C44 C62 C123 REV_TEST2 REV_TEST1 C117 C116 C118 C111 C101 C102 C108 C112 C104 C119 C107 TP22 TP23...
  • Page 110 KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT C121 C34 L8 MAIL PUSH SOFT_A TALK LEFT RIGHT LED9 DOWN CLEAR LED4 LED7 LED5 LED6...

  • Page 111: Component View

    KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT 43 CIRCUIT BOARD (CHARGER UNIT) 43.1. Component View PQUP11305Z CIRCUIT BOARD (CHARGER UNIT) Component View 43.2. Flow Solder Side View WHITE PQUP11305Z BLUE CIRCUIT BOARD (CHARGER UNIT) Flow Solder Side View A.I./S KXTCD220SLT KXTCA122EXT KXTCA121EXT...

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