5.8 ghz digital cordless answering system 5.8 ghz expandable digital cordless answering system with two/three handsets 5.8 ghz digital cordless answering system with three/four handsets (70 pages)
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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.
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.
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.
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.
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...
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) →...
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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.
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.)
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...
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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)
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.
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...
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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.
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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...
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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...
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.
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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.
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).
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...
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.
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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.
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.
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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).
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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).
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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)
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.
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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)
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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.
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.
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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.
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.
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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.
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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,...
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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.
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.
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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.
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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,...
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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.
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.
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KX-TG5521RUB/KX-TGA551RUB Remove the screw to remove the operational P.C. board.
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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.
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KX-TG5521RUB/KX-TGA551RUB 10.1.3. Charger Unit ① ① ② ③ ② ③ 2 charge terminals...
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.
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.
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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.
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)
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)
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 •...
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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...
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.
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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.
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...
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?
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.
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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.
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.
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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.
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.
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).
(*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>.
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.
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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...
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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...
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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...
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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...