Panasonic KX-TG5521RUB Service Manual
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Panasonic KX-TG5521RUB Service Manual

Panasonic KX-TG5521RUB Service Manual

Digital cordless answering system
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AOH and Caller ID Compatible
KX-TGA551RUB
(Handset)
(Charger Unit)
Configuration for each model
Model No
Base Unit
Handset
KX-TG5521 1 (TG5521) 1 (TGA551)
KX-TGA551*
1 (TGA551)
* KX-TGA551 is also an optional accessory, which contains
a handset and a charger.
KX-TG5521RUB
(Base Unit)
Charger Unit Expandable
Up to 6
1
Telephone Equipment
KX-TG5521RUB
Model No.
KX-TGA551RUB
Digital Cordless Answering System
B: Piano Black Version
(for Russia)
© Panasonic System Networks Co., Ltd. 2010
Unauthorized copying and distribution is a
violation of law.
ORDER NO. KM41007179CE

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Summary of Contents for Panasonic KX-TG5521RUB

  • Page 1 KX-TG5521 1 (TG5521) 1 (TGA551) Up to 6 KX-TGA551* 1 (TGA551) * KX-TGA551 is also an optional accessory, which contains a handset and a charger. © Panasonic System Networks Co., Ltd. 2010 Unauthorized copying and distribution is a violation of law.
  • Page 2 KX-TG5521RUB/KX-TGA551RUB WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians.

  • Page 3: Table Of Contents

    KX-TG5521RUB/KX-TGA551RUB TABLE OF CONTENTS PAGE PAGE 1 Safety Precautions----------------------------------------------- 4 15 Exploded View and Replacement Parts List ----------- 80 1.1. For Service Technicians --------------------------------- 4 15.1. Cabinet and Electrical Parts (Base Unit) ----------- 80 2 Warning -------------------------------------------------------------- 4 15.2. Cabinet and Electrical Parts (Handset)------------- 81 2.1.

  • Page 4: Safety Precautions

    KX-TG5521RUB/KX-TGA551RUB 1 Safety Precautions 1.1. For Service Technicians • Repair service shall be provided in accordance with repair technology information such as service manual so as to prevent fires, injury or electric shock, which can be caused by improper repair work.

  • Page 5: Discarding Of P.c. Board

    KX-TG5521RUB/KX-TGA551RUB 2.2.1. Suggested PbF Solder There are several types of PbF solder available commercially. While this product is manufactured using Tin, Silver, and Copper (Sn+Ag+Cu), you can also use Tin and Copper (Sn+Cu) or Tin, Zinc, and Bismuth (Sn+Zn+Bi). Please check the manufacturer’s specific instructions for the melting points of their products and any precautions for using their product with other materials.

  • Page 6: Specifications

    KX-TG5521RUB/KX-TGA551RUB 3 Specifications ■ ■ Power source (AC Adaptor): Standard: 220–240 V AC, 50/60 Hz DECT (Digital Enhanced Cordless Base unit: PQLV219CEW Telecommunications), GAP (Generic Access Profile) Charger: PQLV219CEW ■ ■ Power consumption Number of channels: Base unit: 120 Duplex Channels Standby: Approx.

  • Page 7: Technical Descriptions

    KX-TG5521RUB/KX-TGA551RUB 4 Technical Descriptions 4.1. Block Diagram (Base Unit)

  • Page 8: Circuit Operation (Base Unit)

    KX-TG5521RUB/KX-TGA551RUB 4.2. Circuit Operation (Base Unit) 4.2.1. Outline Base Unit consists of the following ICs as shown in Block Diagram (Base Unit) (P.7). • DECT BBIC (Base Band IC): IC7 - Handling all the audio, signal and data processing needed in a DECT base unit...

  • Page 9: Power Supply Circuit

    KX-TG5521RUB/KX-TGA551RUB 4.2.2. Power Supply Circuit The power is supplied to the DECT BBIC, RF Module, EEPROM and Charge Contact from AC Adaptor (+6.5 V) as shown in Fig.101. The power supply is as follows; • DECT BBIC (IC7): DC Jack (+6.5 V) → IC2 → IC7 DC Jack (+6.5 V) →...
  • Page 10 KX-TG5521RUB/KX-TGA551RUB 4.2.3. Telephone Line Interface <Function> • Bell signal detection • Clip signal detection • ON/OFF hook circuit Bell & Clip (: Calling Line Identification Presentation: Caller ID) signal detection: In the standby mode, Q3 is open to cut the DC loop current and decrease the ring load.

  • Page 11: Block Diagram (Handset)

    KX-TG5521RUB/KX-TGA551RUB 4.3. Block Diagram (Handset)

  • Page 12: Circuit Operation (Handset)

    KX-TG5521RUB/KX-TGA551RUB 4.4. Circuit Operation (Handset) 4.4.1. Outline Handset consists of the following ICs as shown in Block Diagram (Handset) (P.11). • 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 Power Amp.)

  • Page 13: Circuit Operation (Charger Unit)

    KX-TG5521RUB/KX-TGA551RUB 4.5. Circuit Operation (Charger Unit) 4.5.1. Power Supply Circuit The power supply is as shown. AC Adaptor...

  • Page 14: Signal Route

    KX-TG5521RUB/KX-TGA551RUB 4.6. Signal Route SIGNAL ROUTE SIGNAL ROUTE DTMF TONE (BASE UNIT) TEL OUT IC7 (16) - R116 - R29 - C22 - Q5 - Q3 - D3 L1 - A (to Tel Line) L2 - B (BASE UNIT) DTMF TONE...
  • Page 15 KX-TG5521RUB/KX-TGA551RUB SIGNAL ROUTE SIGNAL ROUTE (BASE UNIT) Message Play L1 - A IC421(2) - IC7 (53) - IC7 (16) - R116 - R29 - C22 - Q5 - Q3 - D3 (to Tel Line) L2 - B (HANDSET) MIC (+) - R73 - C11 - RA4 - IC1 (20)

  • Page 16: Location Of Controls And Components

    KX-TG5521RUB/KX-TGA551RUB 5 Location of Controls and Components Refer to the Operating Instructions. Note: You can download and refer to the Operating Instructions (Instruction book) on TSN Server. 6 Installation Instructions Refer to the Operating Instructions. Note: You can download and refer to the Operating Instructions (Instruction book) on TSN Server.

  • Page 17: Service Mode

    KX-TG5521RUB/KX-TGA551RUB 8 Service Mode 8.1. Engineering Mode 8.1.1. Base Unit Important: Make sure the address on LCD is correct when entering new data. Otherwise, you may ruin the unit. Soft keys {ic} (Off/Power) Navigator {C} (Talk) {s} (Speakerphone) ECO/R} ECO: Eco mode shortcut key...
  • Page 18 KX-TG5521RUB/KX-TGA551RUB Frequently Used Items (Base Unit) ex.) Items Address Default Data New Data Remarks C-ID (FSK) sensitivity 04 8B 01 (6 dB up) 02 (12 dB up) When hex changes from “00” to “01” or “02”, gain increases by 6 dB or 12 dB.
  • Page 19 KX-TG5521RUB/KX-TGA551RUB 8.1.2. Handset Important: Make sure the address on LCD is correct when entering new data. Otherwise, you may ruin the unit. Soft keys {ic} (Off/Power) Navigator {C} (Talk) {s} (Speakerphone) ECO/R} ECO: Eco mode shortcut key R: Recall/Flash Dial keypad...
  • Page 20 KX-TG5521RUB/KX-TGA551RUB Frequently Used Items (Handset) ex.) Items Address Default Data New Data Possible Adjusted Possible Adjusted Remarks Value MAX (hex) Value MIN (hex) Sending level 03 17 Adjusted value Given value (*2) Receiving level 03 18 Adjusted value Given value...

  • Page 21: Copying Phonebook Items When Repairing

    KX-TG5521RUB/KX-TGA551RUB 8.2. Copying Phonebook Items when Repairing You can copy the handset phonebook to another (compatible Panasonic) handset. This will help to save the original phonebook data which the customer has registered. Available models: KX-TG5521 Refer to the following procedures.
  • Page 22 KX-TG5521RUB/KX-TGA551RUB Case 3: A handset has a defect. (Radio transmission is functioning.) Service center has a normal HS (B). HS (A) HS (A) HS (B) BS (A) BS (A) 1. Cancel HS (A). 2. Register HS (B) as a handset no. 1.

  • Page 23: How To Clear User Setting

    KX-TG5521RUB/KX-TGA551RUB 8.3. How to Clear User Setting Units are reset to the Factory settings by this operation (Erase recorded Voice messages*, stored Phone numbers, Caller list and etc.) Note: • Some menus are not reset. Refer to Operating Instructions (P.16).

  • Page 24: Troubleshooting Guide

    KX-TG5521RUB/KX-TGA551RUB 9 Troubleshooting Guide 9.1. Troubleshooting Flowchart Flow Chart Not working Power ON Base Unit Check Power No bell Bell Bell Reception Link No Link No charge Battery Charge Check Battery Charge Check Link Range Check the RF part No voice...

  • Page 25: Check Power

    KX-TG5521RUB/KX-TGA551RUB 9.1.1. Check Power 9.1.1.1. Base Unit Is the AC Adaptor inserted into AC outlet? (*1) Is input of IC1 about 6.5 V - 8 V? Check C32, C36 are not shorted. Check AC Adaptor. Is the output voltage of IC2 about 3.0 V? Check Power Supply Circuit.
  • Page 26 KX-TG5521RUB/KX-TGA551RUB 9.1.2. Check Battery Charge 9.1.2.1. Base Unit Plug in the AC Power source. Charge Handset on Base Unit. Check Charge Circuit of Base Unit. Is the voltage of two charge contacts about 3 V or more? Check Handset. Check Charge Contacts at Base Unit from mechanical point of view.

  • Page 27: Check Link

    KX-TG5521RUB/KX-TGA551RUB 9.1.3. Check Link 9.1.3.1. Base Unit Does Base Unit make link with normal working Base Unit is OK. Check Handset. Handset? Is the voltage of VDD3 about 3.0 V? Check around Power Supply Circuit. Refer to Check Point...(A). Adjust VDD1 voltage to 1.8 V.
  • Page 28 KX-TG5521RUB/KX-TGA551RUB Is the Frequency Drift OK? Refer to Check Point...(L). Is the Sensitivity Receiver OK? Refer to Check Point...(M). Is the Timing OK? Replace with a new Circuit Board. Refer to Check Point...(N). Is the Power RAMP OK? Refer to Check Point...(O).
  • Page 29 KX-TG5521RUB/KX-TGA551RUB 9.1.3.2. Handset Does Handset make link with Base Unit? Handset is OK. Check Base Unit. (Correct working unit) Is the voltage of "1.8V" about 1.8 V? Adjust C10 voltage to 1.8 V. Refer to Check Point...(A). Refer to Check Point...(A).
  • Page 30 KX-TG5521RUB/KX-TGA551RUB Is the Frequency Drift OK? Refer to Check Point...(N). Is the Sensitivity Receiver OK? Refer to Check Point...(O). Is the Power RAMP OK? Replace with a new Circuit Board. Refer to Check Point...(P). Cross Reference: Check Point (Handset) (P.40)

  • Page 31: Check The Rf Part

    KX-TG5521RUB/KX-TGA551RUB 9.1.4. Check the RF part 9.1.4.1. Finding out the Defective part 1. Prepare Regular HS (Handset) and Regular BU (Base unit). 2. a. Re-register regular HS (Normal mode) to Base Unit (to be checked). If this operation fails in some ways, the Base Unit is defective.
  • Page 32 KX-TG5521RUB/KX-TGA551RUB 9.1.4.2. RF Check Flowchart Each item (1 ~ 3) of RF Check Flowchart corresponds to Check Table for RF part (P.33). Please refer to the each item. Start Link Control Check DSP interface parts. confirmation signal (RF Block <->DSP on BU/HS P.C.B)
  • Page 33 KX-TG5521RUB/KX-TGA551RUB 9.1.4.3. Check Table for RF part Item BU (Base Unit) Check HS (Handset) Check Link Confirmation Normal 1. Register Regular HS to BU (to be 1. Register HS (to be checked) to Regular checked). HS, BU Mode: [Normal mode] 2.

  • Page 34: Check Handset Transmission

    KX-TG5521RUB/KX-TGA551RUB 9.1.5. Check Handset Transmission Check MIC of Handset. Check CDL TX (HANDSET) in Signal Route. Cross Reference: Signal Route (P.14) 9.1.6. Check Handset Reception Check Handset Speaker in How to check the Handset Speaker or Receiver. Check CDL RX (HANDSET) in Signal Route.
  • Page 35 KX-TG5521RUB/KX-TGA551RUB 9.1.8. Bell Reception 9.1.8.1. Base Unit Check around C3, C4, C5, C6, R3, R4, R5, R6, When bell signal is coming, is there bell sound C136, C137, R32, R33, R34, R35, C52, C53, signal at BBIC (IC7: 20, 21)? L1, L2, C168, C42, C43,R42,R43 Check around C54, C55, R36, R37.

  • Page 36: Troubleshooting By Symptom (Base Unit And Charger Unit)

    KX-TG5521RUB/KX-TGA551RUB 9.2. 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. Remedy (*2) Symptom You have DECT Tester.
  • Page 37 KX-TG5521RUB/KX-TGA551RUB Items Check Procedure Check or Point Replace Parts 1. Connect Telephone Socket to Tel-simulator which is connected with 600 Ω. (H)* Hookswitch Check with L1, L2, Q3, R14, DC Characteristics 2. Set line voltage to 48 V and line current to 40mA at off-hook condition of nor- R15, Q4, R16, mal telephone.
  • Page 38 KX-TG5521RUB/KX-TGA551RUB Items Check Procedure Check or Point Replace Parts (M)* Frequency Drift Confir- Follow steps 1 to 6 of (J). IC7, mation ANTI_TP 7.Confirm that the frequency drift is < ± 35 kHz/ms. C802~C806, C808~C814, C820, C819, C822, C823, C825, C827,...
  • Page 39 KX-TG5521RUB/KX-TGA551RUB Items Check Procedure Check or Point Replace Parts Audio Check 1. Link with Handset which is connected to Line Simulator. IC7, SA1, L1, 2. Set line voltage to 48V and line current to 50mA. L2, D3, Q3, Q4, 3. Input -45dBm(600Ω)/1kHz to MIC of Handset. Measure the Level at Line I/F R14, R15, R16, and distortion level.

  • Page 40: Troubleshooting By Symptom (Handset)

    KX-TG5521RUB/KX-TGA551RUB 9.3. 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. Remedy (*2) Symptom You have DECT Tester. You don't have DECT Tester.
  • Page 41 KX-TG5521RUB/KX-TGA551RUB Items Check Procedure Check or Point Replace Parts (F)* Battery Monitor Check 1. Apply 2.25 V between BATT+ and BATT-. IC1, F1, C1, 2. Execute the command sendchar PAD sendchar LED 0 sendchar CRX 0 1 sendchar AD1 It assumes that the return value is XX.
  • Page 42 KX-TG5521RUB/KX-TGA551RUB Items Check Procedure Check or Point Replace Parts (K)* Frequency Offset Confir- Follow steps 1 to 3 of (I). IC1, mation 4.Confirm that the frequency Offset is < ± 50 kHz. C802~C806, C808~C814, C819~C820, C822, C825~C827, C834, C860~C864, L801~L804,...
  • Page 43 KX-TG5521RUB/KX-TGA551RUB 9.3.2. 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. Conditions 1. When customer’s line has less line loss.

  • Page 44: Disassembly And Assembly Instructions

    KX-TG5521RUB/KX-TGA551RUB 10 Disassembly and Assembly Instructions 10.1. Disassembly Instructions 10.1.1. Base Unit Remove the 4 screws to remove the cabinet cover. Remove the tapes and solders. Cabinet cover Tapes and solders Remove the parallel wire to remove the main P.C. board.
  • Page 45 KX-TG5521RUB/KX-TGA551RUB Remove the screw to remove the operational P.C. board.
  • Page 46 KX-TG5521RUB/KX-TGA551RUB 10.1.2. Handset 4 screws Remove the 4 screws. Insert a JIG (PQDJ10006Y) between the cabinet body Cabinet body and the cabinet cover, then pull it along the gap to open the cabinet. Cabinet cover Likewise, open the other side of the cabinet.
  • Page 47 KX-TG5521RUB/KX-TGA551RUB 10.1.3. Charger Unit ① ① ② ③ ② ③ 2 charge terminals...

  • Page 48: How To Replace The Handset Lcd

    KX-TG5521RUB/KX-TGA551RUB 10.2. How to Replace the Handset LCD Note: The illustrations are simplified in this page. They may differ from the actual product. P. C. board Vertical Interval Tolerance Peel off the FFC (Flexible Flat Cable) from 0.2 mm the LCD, in the direction of the arrow. Take care to ensure that the foil on the P.C.

  • Page 49: Measurements And Adjustments

    KX-TG5521RUB/KX-TGA551RUB 11 Measurements and Adjustments This chapter explains the measuring equipment, the JIG connection, and the PC setting method necessary for the measurement in Troubleshooting Guide (P.24) 11.1. Equipment Required • Digital multi-meter (DMM): it must be able to measure voltage and current.
  • Page 50 KX-TG5521RUB/KX-TGA551RUB 11.2.2. How to install Batch file into P.C. Insert the Batch file CD-ROM into CD-ROM drive and copy PNZZTG**** folder to your PC (example: D drive). <Example for Windows> On your computer, click [Start], select Programs Open an MS-DOS mode window.

  • Page 51: Adjustment Standard (Base Unit)

    KX-TG5521RUB/KX-TGA551RUB 11.3. Adjustment Standard (Base Unit) When connecting the simulator equipment for checking, please refer to below. 11.3.1. Bottom View VDD4 CP+3.0V VDD5 CP+2.5V VDD3 +3.0V +2.4V VDD2 VDD1 +1.8V CHARGE- CHARGE+ Note: (A) - (T) is referred to Check Point (Base Unit) (P.36)

  • Page 52: Adjustment Standard (Charger Unit)

    KX-TG5521RUB/KX-TGA551RUB 11.4. Adjustment Standard (Charger Unit) When connecting the simulator equipment for checking, please refer to below. 11.4.1. Bottom View Digital Volt Meter /2 W DC POWER DC 6.5 V Note: (A) is referred to Check Point (Charger Unit) (P.39)

  • Page 53: The Setting Method Of Jig (Handset)

    KX-TG5521RUB/KX-TGA551RUB 11.5. The Setting Method of JIG (Handset) This section explains the PC setting to use command required in Check Point (Handset)(P.40). <Preparation> (PQZZ1CD505E), change following values • Serial JIG cable: PQZZ1CD300E* resistance. Then you can use it as a JIG Cable for both •...
  • Page 54 KX-TG5521RUB/KX-TGA551RUB 11.5.2. How to install Batch file into P.C. Insert the Batch file CD-ROM into CD-ROM drive and copy PNZZTG***** folder to your PC (example: D drive). <Example for Windows> Open an MS-DOS mode window. On your computer, click [Start], select Programs...

  • Page 55: Adjustment Standard (Handset)

    KX-TG5521RUB/KX-TGA551RUB 11.6. Adjustment Standard (Handset) When connecting the simulator equipment for checking, please refer to below. 11.6.1. Component View C141 RECEIVER PNLB1802Z KX-TGA550/551 C152 C186 C187 C105 C71 C70 C804 C863 C864 C814 C811 RA800 R801 C802 C813 R808 R802...

  • Page 56: Things To Do After Replacing Ic Or X'tal

    KX-TG5521RUB/KX-TGA551RUB 11.7. Things to Do after Replacing IC or X'tal If repairing or replacing BBIC (FLASH type), EEPROM and X'tal, it is necessary to download the required data such as Programming data or adjustment data, etc in memory. The set doesn't operate if it is not executed.
  • Page 57 KX-TG5521RUB/KX-TGA551RUB 11.7.1.2. Handset First, operate the PC setting according to The Setting Method of JIG (Handset)(P.53). Then download the appropriate data according to the following procedures. Items How to download/Required adjustment BBIC (FLASH type) Programming data is stored in memory.

  • Page 58: Rf Specification

    KX-TG5521RUB/KX-TGA551RUB 11.8. RF Specification 11.8.1. Base Unit Item Value Refer to -. * TX Power 19 dBm ~ 25 dBm Check Point (Base Unit) (J) Modulation -370±30/+370±30 kHz/div & Modulated Check Point (Base Unit) (K) width 690 kHz Frequency Offset...

  • Page 59: How To Check The Handset Speaker Or Receiver

    KX-TG5521RUB/KX-TGA551RUB 11.9. 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. SPEAKER: Is the value between (+) terminal and (–) terminal about 8 Ω?

  • Page 60: Miscellaneous

    KX-TG5521RUB/KX-TGA551RUB 12 Miscellaneous 12.1. 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 61 KX-TG5521RUB/KX-TGA551RUB 12.1.3. How to Install the IC 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 62: How To Replace The Shield Case

    KX-TG5521RUB/KX-TGA551RUB 12.2. How to Replace the Shield Case 12.2.1. Preparation • PbF (: Pb free) Solder • Soldering Iron Tip Temperature of 700°F ± 20°F (370°C ± 10°C) Note: We recommend a 30 to 40 Watt soldering iron. An expert may be able to use a 60 to 80 Watt iron where someone with less experience could overheat and damage the PCB foil.
  • Page 63 KX-TG5521RUB/KX-TGA551RUB 12.2.4. How to Install the Shield Case Note: • If you don’t have special tools (ex. Hot air disordering tool), conduct the following operations. • Shield case’s No. : PNMC1013Z 1. Put the shield case. 2. Solder the surroundings.

  • Page 64: Terminal Guide Of The Ics, Transistors, Diodes And Electrolytic Capacitors

    KX-TG5521RUB/KX-TGA551RUB 12.3. Terminal Guide of the ICs, Transistors, Diodes and Electrolytic Capacitors 12.3.1. Base Unit (Reverse View) B1ZBZ0000065 PNWITG6521EH B1ACGP000007 C0DBAGZ00026 C1CB00001842 C3FBLY000048 C1CB00002906 Cathode Anode PQVTBF822T7, B1ADGE000004 PQVDRLZ20A UN9219J, UNR92A6J0L 2SD0874AS B0EDER000009 2SC6054JSL, B1ABCE000009 MA8033 Cathode Cathode Anode Anode...

  • Page 65: Schematic Diagram

    KX-TG5521RUB/KX-TGA551RUB 13 Schematic Diagram 13.1. For Schematic Diagram 13.1.1. Base Unit (Schematic Diagram (Base Unit)) Notes: 1. DC voltage measurements are taken with voltmeter from the negative voltage line. 2. The schematic diagrams may be modified at any time with the development of new technology.

  • Page 66: Schematic Diagram (Base Unit)

    KX-TG5521RUB/KX-TGA551RUB 13.2. Schematic Diagram (Base Unit) ANT1_TP ANT2_TP ANT_2 ANT_1 C851 C853 DA802 Beep C859 R807 Bell Signal RXON L801 C827 *R86 *C826 *R87 RX _RF 1.1p DA801 RF_RXn C803 1.5p RF_RXp 2.5V VDD5 +2.5_CP +1.8V +3.0V *C501 TAM_WP 100n 10...
  • Page 67 KX-TG5521RUB/KX-TGA551RUB Loop Current LINE_DC *R30 100k C155 TP10 *R13 680 *R20 R116 2.7k *R17 *R12 2.2k 100k +1.8V +1.8V 100k GND GND HAK_CL1 Caller ID RX_AF *R42 *C42 Bell signal 180k 4.7M R4 1M 680p *R43 *C43 *C147 10p TX _AF...

  • Page 68: Schematic Diagram (Base Unit_Operation)

    KX-TG5521RUB/KX-TGA551RUB 13.3. Schematic Diagram (Base Unit_Operation) LED902 LED901 2APVCC MEG_LED ANS_LED KEYS_B KEYIN1 KEYIN2 KEYIN3 KEYS_C KEYS_D ANS1 ERASE KEYS_E SKIP DOWN LOCAT/INT STOP NC: No Components KX-TG5521 SCHEMATIC DIAGRAM (Base Unit_Operation)
  • Page 69 KX-TG5521RUB/KX-TGA551RUB Memo...

  • Page 70: Schematic Diagram (Handset)

    KX-TG5521RUB/KX-TGA551RUB 13.4. Schematic Diagram (Handset) Charge Current BATTERY 5.6n BATT+ C341 C340 C342 J39p 6.3V 330u C150 +1.8V BATTERY 1.8V 1.8V BATTERY BATT- R330 C331 J56p 6.3V 330u R331 C332 R332 3.0V 4.0V CP+3.0V CP+4.0V 1.2k CP3.0V CP4.0V CHG(+) CHARGE 1.5k...
  • Page 71 KX-TG5521RUB/KX-TGA551RUB R807 RXON L801 C827 TP_ANT1 C826 RX_RF RF_RXn C803 1.5p DA801 RF_RXp CP+3.0V C172 K0.1u RA40 BATTERY R880 Q880 Power_adj C881 PSET VCCS BATTERY C834 TX_RF PSEL 1.3p C812 PAON PRAMP IC801 R805 47 VDD_PADRV RA800 C188 PSEL R806...

  • Page 72: Schematic Diagram (Charger Unit)

    KX-TG5521RUB/KX-TGA551RUB 13.5. Schematic Diagram (Charger Unit) 12 (2W) SCHEMATIC DIAGRAM (Charger Unit)

  • Page 73: Printed Circuit Board

    KX-TG5521RUB/KX-TGA551RUB 14 Printed Circuit Board 14.1. Circuit Board (Base Unit_Main) 14.1.1. Component View R129 R130 C157 R126 C516 C515 C514 R516 R133 R132 C513 R657 C512 C861 R511 R808 C511 R135 R801 C517 C860 R802 C518 C520 C823 R805 IC801...
  • Page 74 KX-TG5521RUB/KX-TGA551RUB 14.1.2. Bottom View VDD4 (CP3.0V) (10.368MHZ) CHG- VDD1 1.8V CHG+ KX-TG5521 CIRCUIT BOARD (Base Unit_Main (Bottom View))

  • Page 75: Circuit Board (Base Unit_Operation)

    KX-TG5521RUB/KX-TGA551RUB 14.2. Circuit Board (Base Unit_Operation) 14.2.1. Component View DOWN LOCAT/INT ANS1 PNLB1803Z TG5521 STOP ERASE SKIP KX-TG5521 CIRCUIT BOARD (Base Unit_Operation (Component View))
  • Page 76 KX-TG5521RUB/KX-TGA551RUB Memo...

  • Page 77: Circuit Board (Handset)

    KX-TG5521RUB/KX-TGA551RUB 14.3. Circuit Board (Handset) 14.3.1. Component View C141 RECEIVER RCV- PNLB1802Z KX-TGA550/551 RCV+ C152 C186 C187 C105 C71 C70 C804 C863 C864 C814 C811 RA800 C802 R801 C813 R808 R802 C880 R880 R805 L802 JTAG C834 R225 C826 R807 R203 1.8V...
  • Page 78 KX-TG5521RUB/KX-TGA551RUB 14.3.2. Bottom View PNLB1802Z SOFT_A SOFT_B SOFT_C TALK LEFT RIGHT LED4 LED3 DOWN LED8 LED6 LED7 LED5 KX-TGA551 CIRCUIT BOARD (Handset_Main (Bottom View))

  • Page 79: Circuit Board (Charger Unit)

    KX-TG5521RUB/KX-TGA551RUB 14.4. Circuit Board (Charger Unit) 14.4.1. Component View CIRCUIT BOARD (Charger unit (Component View)) 14.4.2. Bottom View TP4 (GND) CIRCUIT BOARD (Charger unit (Bottom View))

  • Page 80: Exploded View And Replacement Parts List

    KX-TG5521RUB/KX-TGA551RUB 15 Exploded View and Replacement Parts List 15.1. Cabinet and Electrical Parts (Base Unit) (*2) 15(*1) 15(*1) PCB2 PCB1 Ref.No. Figure 2.6 x 8 mm Note: (*1) The SPACERs (No.15) are cut from the excess parts of SPACER (No.108) of Cabinet and Electrical Parts (Handset) (P.81).

  • Page 81: Cabinet And Electrical Parts (Handset)

    (*1) This cable is fixed by welding. Refer to How to Replace the Handset LCD (P.48). (*2) The rechargeable Ni-MH battery P03P or HHR-4NGE is available through sales route of Panasonic. (*3) Attach the spacer (No. 116) to the exact location described <fig.1>.

  • Page 82: Cabinet And Electrical Parts (Charger Unit)

    KX-TG5521RUB/KX-TGA551RUB 15.3. Cabinet and Electrical Parts (Charger Unit) 200-1 PCB200 200-3 200-2 200-4 Ref.No. Figure 2 8 mm...

  • Page 83: Accessories

    KX-TG5521RUB/KX-TGA551RUB 15.4. Accessories...

  • Page 84: Replacement Part List

    KX-TG5521RUB/KX-TGA551RUB 15.5. Replacement Part List Safety Ref. Part No. Part Name & Description Remarks 1. RTL (Retention Time Limited) PNJT1050X CHARGE TERMINAL Note: PNLA1030Z ANTENNA The “RTL” marking indicates that its Retention Time is PNYE1034Z SPACER, ANTENNA PNKF1111Z1 CABINET COVER PS-HB Limited.
  • Page 85 KX-TG5521RUB/KX-TGA551RUB Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks ERJ3GEYJ104 100k F1K2H681A008 680p PQ4R18XJ272 2.7k F1K2H681A008 680p ERJ2GEJ103 ECUE1A273KBQ 0.027 ERJ2GEJ222 2.2k ECUV1H122KBV 0.0012 ERJ2GEJ273X PQCUV1A105KB 1 ERJ2GEJ822 8.2k ECJ0EB1A473K 0.047 ERJ2GEJ272 2.7k...
  • Page 86 KX-TG5521RUB/KX-TGA551RUB 15.5.2.2. Main P.C.Board Parts Safety Ref. Part No. Part Name & Description Remarks Note: C820 F1G1HR50A480 0.5p (*1) Reconfirm the model No. written on the handset’s name C822 F1G1H3R0A480 3p plate when replacing PCB100. Because the model No. of...
  • Page 87 KX-TG5521RUB/KX-TGA551RUB Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks ERJ2GEJ102 C188 ECUE0J105KBQ 1 ERJ2GEJ821 C331 ECUE0J105KBQ 1 ERJ2GEJ821 C332 ECUE0J105KBQ 1 ERJ3GEYJ152 1.5k C341 ECUE1H390JCQ 39p ERJ2GEJ101 C580 F1G1H100A723 10p...
  • Page 88 KX-TG5521RUB/KX-TGA551RUB 15.5.4. Accessories Note: You can download and refer to the Operating Instructions (Instruction book) on TSN Server. Safety Ref. Part No. Part Name & Description Remarks PQLV219CEW AC ADAPTOR PQJA10075Z CORD, TELEPHONE 15.5.5. Screws Safety Ref. Part No. Part Name & Description Remarks...

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