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Introduction

A look inside the Panasonic RZ-S50W (Japan) / RZ-S500W (Outside Japan) Bluetooth Headphones

This teardown is not a repair guide. To repair your Panasonic RZ-S50W (Japan) Bluetooth Headphones, use our service manual.

  1. Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown, Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 1, image 1 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown, Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 1, image 2 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown, Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 1, image 3 of 3
    • Features:

    • Exceptional Sound and Noise Cancellation. Multiple MEMS microphones

    • Optimum Sound Isolation

    • Strong, Stable Connection

    • High-Quality Calling Sound

    • Approximately, 6 hours playback, and up to 20 Hours of use with charger

    • Bluetooth® 5.0

    • Capacitive touch sensor control

  2. Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 2, image 1 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 2, image 2 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 2, image 3 of 3
    • What is in the box

    • Headphones / Charging Case

    • USB 'C' Cable

    • Headphone rubber tips for different sizes of ears

    • User's Manual

  3. Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 3, image 1 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 3, image 2 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 3, image 3 of 3
    • Charging case with headphones

    • Close up view of headphones

  4. Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 4, image 1 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 4, image 2 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 4, image 3 of 3
    • Side views of Headphone

    • MEMS Microphones

    • Speaker Spatial Vent Port

    • Speaker Sound Port

    • Speaker Vent

    • USB Interface

    • Charger Interface

    • Vent Port

  5. Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 5, image 1 of 1
    • View of Headphone with rubber ear piece [cap] removed

    • Vent Port

  6. Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 6, image 1 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 6, image 2 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 6, image 3 of 3
    • Since the Panasonic Headphone enclosure is glued together, the only way in was to cut into the headphone.

    • This is a destructive teardown

    • A Razsor Knife was use to cut into the Panasonic headphone along the seam in the headphone. Then a Jimmy Tool was used to open up the headphone

    • Once opened, we get our first look at the inside of the headphone

  7. Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 7, image 1 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 7, image 2 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 7, image 3 of 3
    • Opening up the headphone, we can see the main PCB, Battery, Speaker, etc. Tweezers and a Pick Tool were used to removed the electronics from the enclosure

    • Double sided foam tape was used to hold the main the PCB to the Battery and to the Touch Sensor / Antenna PCB. This foam tape had to be cut free. Then Denatured Alcohol was used to remove the foam tape glue from the PCBs and Battery

    • Battery

    • Main PCB

    • Speaker Area

    • Touch Sensor and Antenna

    • Double Sided Foam Tape

  8. Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 8, image 1 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 8, image 2 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 8, image 3 of 3
    • At first, I wasn't sure about the solder balls. Then I realized they are used to anchor the USB and Power Interface pins on the outside of the Headphone to the internal circuit board.

    • I had to used a soldering iron to remove the solder balls, so that the internal interface circuit board could be removed. I had to also remove solder from the speaker wires to free up the internal circuit board.

    • The internal circuit board was also attached a MEMS Microphone that appeared to be monitoring the Speaker Chamber of the Headphone, since it was faced in. I had to remove the outside panel with 'R' on it with a Razor Knife to free the MEMS Microphone. Once the MEMS Microphone was freed, the interface circuit board could be pulled out

    • USB and Power (Charger) Interface

    • MEMS Microphone

    • Sound Ports

    • Speaker Wires

    • Internal Circuit Board that interface Power and USB to the Headphones

  9. Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 9, image 1 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 9, image 2 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 9, image 3 of 3
    • There was not much to see on the internal interface board. The was one IC component that could not be crossed. If you happen to know the component, please leave a comment below

    • Unknown Component

  10. Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 10, image 1 of 2 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 10, image 2 of 2
    • Full Sensor Flex/Charging PCB IC Identification:

    • You may need to enlarge the picture to view the text.

  11. Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 11, image 1 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 11, image 2 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 11, image 3 of 3
    • Next the Speaker sound chamber cover was removed with the use of a Pick Tool and Tweezers. A Razor Knife was used to cut the glue holding the speak in place

    • The speaker had no identifiable markings

    • With Speaker removed, we can see the sound chamber and sound ports

  12. Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 12, image 1 of 2 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 12, image 2 of 2
  13. Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 13, image 1 of 2 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 13, image 2 of 2
    • Closeup view of the Antenna/Touch Sensor side of the Main PCB

    • DSP Group - C2A1A Hybrid Active Noise Cancellation (ANC) Codec and Audio Digital Signal Processor (DSP)

    • 651DF1M9 - Could not cross part number, but during a web search found out that it may be an integrated battery management IC

    • W25Q32JWUUIMTR- SPI FLASH 32Mb

    • MEMS Microphone Port

  14. Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 14, image 1 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 14, image 2 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 14, image 3 of 3
    • Closeup view of some of the components on the Antenna/Touch Sensor side of the Main PCB

    • DSP Group - C2A1A Hybrid Active Noise Cancellation (ANC) Codec and Audio Digital Signal Processor (DSP)

    • W25Q32JWUUIMTR- SPI FLASH 32Mb

    • 651DF1M9 - Could not cross part number, but during a web search found out that it may be an integrated battery management IC

  15. Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 15, image 1 of 2 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 15, image 2 of 2
    • Battery side close up view of the Main PCB

    • AIROHA AB1552 - ARM Cortex M4/Bluetooth 5.0 Dual Mode

    • 927 MPS1 MEMS Microphone. The Headphone uses three MEMS microphones with this part number

    • Could not cross the part number. If you know the part, please leave a comment below. The 2D bar code on the part reads as STM927352NH2S011

    • Crystal Oscillator

    • Unknown component. Labelled B2A. Please leave a comment if you happen to know this component

    • Unknown component. Labelled SV4CP 240. Please leave a comment if you happen to know this component. Separated from PCB during teardown

  16. Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 16, image 1 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 16, image 2 of 3 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 16, image 3 of 3
    • Closeup view of some of the components on the Battery side of the Main PCB

    • AIROHA AB1552 - ARM Cortex M4/Bluetooth 5.0 Dual Mode

    • 927 MPS1 MEMS Microphone. The Headphone uses three of these MEMS microphones

    • Could not cross the part number. If you know the part, please leave a comment below. The 2D bar code on the part reads as STM927352NH2S011

    • Unknown component. Labelled B2A. Please leave a comment if you happen to know this componentNew line.

  17. Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 17, image 1 of 2 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 17, image 2 of 2
    • Closeup view of top and bottom side of the Touch Sensor Flex PCB and PCB Antenna

  18. Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 18, image 1 of 2 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 18, image 2 of 2
    • Full Main PCB IC Identification:

    • You may need to enlarge the picture to view the text.

  19. Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 19, image 1 of 1
    • Predicted Block Diagram of the Panasonic RZ-S50W Bluetooth Headphones:

    • You may need to enlarge the picture to view the text.

  20. Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 20, image 1 of 2 Panasonic RZ-S50W (Japan) Bluetooth Headphones Teardown: step 20, image 2 of 2
    • Teardown Exploded View of the Panasonic Headphone

Robert Shuler

Member since: 03/12/2019

3,539 Reputation

11 Guides authored

3 Comments

If you can, can you post the teardown of the charging case too?

CChin - Reply

Dong a web search, I believe the glue removed from the speaker was a silicone dome used to help compress sound waves?

Moe Moe's - Reply

yes second the charging case!

Benjamin - Reply

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