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KX-PRW120W/KX-PRWA10W 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-PRW120W/KX-PRWA10W 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-PRW120W/KX-PRWA10W 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-PRW120W/KX-PRWA10W 4 Technical Descriptions 4.1. US-DECT Description The frequency range of 1.92 GHz-1.93 GHz is used. Transmitting and receiving carrier between base unit and Portable is same frequency. Refer to Frequency Table (P.60). 4.1.1. TDD Frame Format 5 ms 5 ms Up Link ( Portable - >...
KX-PRW120W/KX-PRWA10W 4.1.3. Signal Flowchart in the Radio Parts Reception Base unit: A voice signal from TEL line is encoded to digital data and converted into a 1.9 GHz modulated radio signal by BBIC(IC501). The RF signal, after which is amplified in BBIC, is fed to selected antenna.
KX-PRW120W/KX-PRWA10W 4.3. Circuit Operation (Base Unit) 4.3.1. Outline Base Unit consists of the following ICs as shown in Block Diagram (Base Unit) (P.10). • DECT BBIC (Base Band IC): IC501 - Handling all the audio, signal and data processing needed in a DECT base unit...
KX-PRW120W/KX-PRWA10W 4.4. Circuit Operation (Base Unit) General Description: (BBIC, Flash Memory, EERROM) is a digital speech/signal processing system that implements all the functions of speechcom- pression, record and playback, and memory management required in a digital telephone answering machine.The BBIC system is fully controlled by a host processor.
KX-PRW120W/KX-PRWA10W 4.4.4. Power Supply Circuit The power is supplied to the DECT BBIC, QSPI FLASH MEMORY, FLASH MEMORY, EEPROM and Charge Contact from AC Adaptor (+5.5 V) as shown in Fig.101. The power supply is as follows; • DECT BBIC (IC501): DC Jack (+5.5 V) →...
KX-PRW120W/KX-PRWA10W 4.4.5. 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, Q141 is open to cut the DC loop current and decrease the ring load.
KX-PRW120W/KX-PRWA10W Parallel connection detection when off hook: When off hook, the voltage is monitored at pin (F2) of IC501; the presence/absence of a parallel connection is determined by detecting the voltage changes. If the Auto disconnect function is ON and statuses are Hold, receiving ICM, OGM transmitting, BBIC disconnects the line after detecting parallel connection is off hook.
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KX-PRW120W/KX-PRWA10W Call Waiting Caller ID Calling Identity Delivery on Call Waiting (CIDCW) is a CLASS service that allows a customer, while off-hook on an existing call, to receive information about a calling party on a waited call. The transmission of the calling information takes place almost immediately after the customer is alerted to the new call so he/she can use this information to decide whether to take the new call.
KX-PRW120W/KX-PRWA10W 4.6. Circuit Operation (Handset) 4.6.1. Outline Handset consists of the following ICs as shown in Block Diagram (Handset) (P.17). • 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-PRW120W/KX-PRWA10W 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-PRW120W/KX-PRWA10W 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 m ay ruin the unit. Soft keys Navigator key/ (Volume) key {R/ECO} R: Recall/Flash ECO: Eco mode shortcut key...
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KX-PRW120W/KX-PRWA10W Frequently Used Items (Base Unit) ex.) Items Address Default Data New Data Remarks C-ID(FSK) sensitivity 07 5D/07 5C 00/51 00/39 00/28 When the hex change from 00/51 to 00/39 or (3 dB up) (6 dB up) 00/28, gain increase by 3 dB or 6 dB.
KX-PRW120W/KX-PRWA10W 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 Navigator key/ {R/ECO} (Volume) key R: Recall/Flash ECO: Eco mode shortcut key {ic} (Off/Power) Dial keypad...
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KX-PRW120W/KX-PRWA10W Frequently Used Items (Handset) ex.) Items Address Default Data New Data Possible Adjusted Possible Adjusted Remarks Value MAX (hex) Value MIN (hex) Sending level 05 07 Adjusted value Given value (*2) Receiving level 05 08 Adjusted value Given value...
KX-PRW120W/KX-PRWA10W 8.2. EEPROM LAYOUT (Handset) 8.2.1. Scope The purpose of this section is to describe the layout of the EEPROM (IC3) for the KX-PRWA10 Handset. The EEPROM contains hardware, software, and user specific parameters. Some parameters are set during production of the handset, some are set by the user when configuring the handset, and some during normal use of the phone.
KX-PRW120W/KX-PRWA10W 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.22).
KX-PRW120W/KX-PRWA10W 9 Troubleshooting Guide 9.1. Troubleshooting Flowchart Flow Chart Not working Power ON Base Unit Check Power Not working Smartphone Connect Check Wi-Fi No bell Bell Bell Reception Link No Link No charge Battery Charge Check Battery Charge Check Link...
KX-PRW120W/KX-PRWA10W 9.1.1. Check Power 9.1.1.1. Base Unit Is the AC Adaptor inserted into AC outlet? (*1) Is input of IC302 about 5.5 V? Check C321, C341 are not shorted. Check AC Adaptor. Is the output voltage of IC302 about 3.3V? Check Power Supply Circuit.
KX-PRW120W/KX-PRWA10W 9.1.1.2. Handset Is the battery inserted BATT+ and BATT-? Is the voltage of BATT+ 2.3 V more? Check P1 is not open. Check the battery and around BATT+ and BATT- are not shorted. Check around L3, Q8, BBIC (IC1) .
KX-PRW120W/KX-PRWA10W 9.1.3. Check Battery Charge 9.1.3.1. 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-PRW120W/KX-PRWA10W 9.1.4. Check Link 9.1.4.1. Base Unit Does Base Unit make link with normal working Base Unit is OK. Check Handset. Handset? Is the voltage of VDD3 about 3.3 V? Check around Power Supply Circuit. Refer to Check Point...(A). Adjust VDD1 voltage to 1.8 V.
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KX-PRW120W/KX-PRWA10W 9.1.4.2. 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 1.8V voltage to 1.8 V. Refer to Check Point...(A). Refer to Check Point...(A).
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KX-PRW120W/KX-PRWA10W Is the Sensitivity Receiver OK? Refer to Check Point...(L). Is the Power RAMP OK? Replace with a new Circuit Board. Refer to Check Point...(M). Cross Reference: Check Point (Handset) (P.43)
KX-PRW120W/KX-PRWA10W 9.1.5. Check the RF part 9.1.5.1. 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-PRW120W/KX-PRWA10W 9.1.5.2. RF Check Flowchart Each item (1 ~ 3) of RF Check Flowchart corresponds to Check Table for RF part (P.38). 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-PRW120W/KX-PRWA10W 9.1.5.3. 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-PRW120W/KX-PRWA10W 9.1.6. Check Handset Transmission Check MIC of Handset. Check CDL TX (HANDSET) in Signal Route. Cross Reference: Signal Route (P.20) 9.1.7. Check Handset Reception Check Handset Speaker in How to check the Handset Speaker or Receiver. Check CDL RX (HANDSET) in Signal Route.
KX-PRW120W/KX-PRWA10W 9.1.9. Bell Reception 9.1.9.1. Base Unit When bell signal is coming, is there bell sound Check around C103, C104, C105, C106, C107, signal at BBIC (IC501:CIDINp, CIDINn)? C108, C109, C110, C111, C112, C123, C124, R101, R102, R103, R104, R105, R106, R107, R108, R109, R110, R111, R112, P101 9.1.9.2.
KX-PRW120W/KX-PRWA10W 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-PRW120W/KX-PRWA10W Items Check Procedure Check or Point Replace Parts (J)* Transmitted Power Remove the Antenna before starting step from 1 to 7. IC501, C891, Confirmation ANTI_TP 1. Configure the DECT tester (CMD60) as follows; C93, C894, <Setting> DA802, Q502, • Test mode: FP C525, R507 •...
KX-PRW120W/KX-PRWA10W 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. Symptom Remedy (*2) You don’t have DECT Tester. You have DECT Tester.
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KX-PRW120W/KX-PRWA10W Items Check Procedure Check or Point Replace Parts (F)* Battery Monitor Check 1. Apply 2.25 V between BATT+ and BATT-. IC1, P1, R1 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-PRW120W/KX-PRWA10W Items Check Procedure Check or Point Replace Parts (O) SP phone Audio Check 1. Link to Base which is connected to Line Simulator. C1, C36, C37 and Confirmation 2. Set line voltage to 48 V and line current to 50 mA.
KX-PRW120W/KX-PRWA10W 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-PRW120W/KX-PRWA10W 10 Disassembly and Assembly Instructions 10.1. Disassembly Instructions 10.1.1. Base Unit Remove the 2 screws. Press the cabinet cover. Then, pull up to remove the cabinet cover. Press Press...
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KX-PRW120W/KX-PRWA10W Remove the solders then remove the main P.C.Board. Lower cover Main P.C. board...
KX-PRW120W/KX-PRWA10W 10.1.2. Handset 6 screws Remove the 6 screws. Insert a plastic card. (Ex. Used SIM card etc.) 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.
KX-PRW120W/KX-PRWA10W 10.1.3. Charger Unit Remove the 2 screws. Press the cabinet cover. Then, pull up to remove the cabinet cover. Press Press Lower cover...
KX-PRW120W/KX-PRWA10W 10.2. How to Replace the Handset LCD Note: The illustrations are simplified in this page. They may differ from the actual product. Stick the LCD Sheet on to the LCD Unit. LCD unit LCD sheet Stick it along this line.
KX-PRW120W/KX-PRWA10W 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.29) 11.1. Equipment Required • Digital multi-meter (DMM): it must be able to measure voltage and current.
KX-PRW120W/KX-PRWA10W 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-PRW120W/KX-PRWA10W 11.4. The Setting Method of JIG (Handset) This section explains the PC setting to use command required in Check Point (Handset)(P.43). <Preparation> Note: *: If you have the JIG Cable for TCD500 series • Serial JIG cable: PQZZ1CD300E* (PQZZ1CD505E),...
KX-PRW120W/KX-PRWA10W 11.4.2. 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-PRW120W/KX-PRWA10W 11.5. Adjustment Standard (Handset) When connecting the simulator equipment for checking, please refer to below. 11.5.1. Component View JTAG LED- JOINT301 BLUE (I)(J)(K)(L) RCV- RCV+ PALp PALn RF-SHIELD LED+ +1.8V Green +3.0V Orange ORANGE Orange SPEAKER – BLUE Blue...
KX-PRW120W/KX-PRWA10W 11.6. 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-PRW120W/KX-PRWA10W 11.6.1.2. Handset First, operate the PC setting according to The Setting Method of JIG (Handset)(P.55). Then download the appropriate data according to the following procedures. Items How to download/Required adjustment FLASH(IC2) Programming data is stored in memory. 1)Execute ComCommunicator.exe in the ComCommunicator folder.
KX-PRW120W/KX-PRWA10W 11.7. RF Specification 11.7.1. Base Unit Item Value Refer to -. * TX Power 17 dBm ~ 20 dBm Check Point (Base Unit) (J) Frequency Offset ±20 kHz Check Point (Base Unit) (L) RX Sensitivity < 1000 ppm Check Point (Base Unit) (M)
KX-PRW120W/KX-PRWA10W 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-PRW120W/KX-PRWA10W 11.11. Confirm WiFi connection after replacing IC800 After replacing IC800, please check the below steps for confirming the Fix. 1) Confirm MAC address by OI (Operation Instruction manual) in order to check control signals between BBIC and WiFi module.
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KX-PRW120W/KX-PRWA10W Click “Action” and “Connect”. <Set Frenquency and Power level> [1] Confirm "Boot mode" for servicing. • Type &X 0echo "`bootmode br`" and then press return key. 「 」 」 PC Display >&X 0echo "`bootmode br`" >BootMode : 11 • When returning BootMode:11 , goes to Step [2].
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KX-PRW120W/KX-PRWA10W [4] Write ”TX power”. • Type &X 1wifi_set_all_txpower.sh 13 and then press return key. 「 」 」 • Approx 10sec may be taken sometime to OK. PC Display >&X 1wifi_set_all_txpower.sh 13 >OK [5] Write BootMode for usually using. • Type &X 1bootmode bw 10 and then press return key.
KX-PRW120W/KX-PRWA10W 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.
KX-PRW120W/KX-PRWA10W 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-PRW120W/KX-PRWA10W 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.
KX-PRW120W/KX-PRWA10W 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. : PNMC1091Z, PNMC1033Z 1. Put the shield case. 2. Solder the surroundings.
KX-PRW120W/KX-PRWA10W 13 Schematic Diagram 13.1. For Schematic Diagram 13.1.1. Base Unit (Base Unit (Main)) 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-PRW120W/KX-PRWA10W 15 Exploded View and Replacement Parts List 15.1. Cabinet and Electrical Parts (Base Unit) 15.1.1. KX-PRW120 CUSHION/LCD (No.105) (*7) (*7) PCB1 Ref.No. Figure 2.6 x 8 mm Note: (*7) Attach the cushion LCD (No. 105) to the exact location described above. Refer to Cabinet and Electrical Parts (Handset)
(*1) This cable is fixed by attaching. Refer to How to Replace the Handset LCD (P.51). (*2) The rechargeable Ni-MH battery HHR-4DPA or HHR-4MYA is available through sales route of Panasonic. (*3)(*4) (*5)(*6) Attach the cushion LCD (No. 105) to the exact location described above.
KX-PRW120W/KX-PRWA10W 15.3. Cabinet and Electrical Parts (Charger Unit) CUSHION/LCD (No.105) (*7) 200-1 200-2 200-5 (*7) 200-4 200-6 200-7 200-8 200-9 200-3 Ref.No. Figure 2.6 x 8 mm Note: (*7) Attach the cushion LCD (No. 105) to the exact location described above. Refer to Cabinet and Electrical Parts (Handset)
KX-PRW120W/KX-PRWA10W 15.4. Accessories and Packing Materials 15.4.1. KX-PRW120 A3, A4, A5, A6 PAD5(*1) PAD6(*2) PAD4 PAD3(*1) Note: (*1) Pad 3 and Pad 5 is a piece of Pad 4. (*2) This pad is for AC Adaptor.
KX-PRW120W/KX-PRWA10W 15.4.2. KX-PRWA10 A101 A102 P101 P102 P103 PAD5(*2) PAD4 PAD3(*1) Note: (*1) Pad 3 is a piece of Pad 4. (*2) This pad is for AC Adaptor.
KX-PRW120W/KX-PRWA10W 15.5. Replacement Part List Safety Ref. Part No. Part Name & Description Remarks 1. RTL (Retention Time Limited) PQJJ1T039L JACK, MODULAR Note: K2ECYZ000001 JACK, DC PQHA10023Z RUBBER PARTS, FOOT The “RTL” marking indicates that its Retention Time is CUSHION Limited.
200-9 PNKF1295Z1 CABINET COVER PS-HB 15.5.4. Accessories Note: You can download and refer to the Operating Instructions (Instruction book) on TSN Server. 15.5.4.1. KX-PRW120W Safety Ref. Part No. Part Name & Description Remarks PNLV2360Z AC ADAPTOR (for Base Unit) PQJA10075Z...