--- title: EPOS SDW 10 HS — Diagnostics (Audiobox V2 and standalone connection) description: "This article covers two configurations: the headset used through the Hub Receiver of an Audiobox V2, and the headset used on its own, with its dongle plugged directly into a workstation (standalone connection). The LED reference table and FAQ at the end apply to both cases." --- [Skip to content](https://support.medinbox.com/kb/epos-sdw-10-hs-troubleshooting-led-diagnostics-and-pairing#main-content) English Show submenu for translations ![LOGO-Medinbox-RVB](https://support.medinbox.com/hubfs/LOGO-Medinbox-RVB.svg) Open main navigation Close main navigation - English Show submenu for translations - Contact us Contact us How can we help you? - There are no suggestions because the search field is empty. 1. [Medinbox Support](https://hub.medinbox.com/kb?hsLang=en) 2. [Hardware](https://hub.medinbox.com/kb/hardware?hsLang=en) 3. [Audio](https://hub.medinbox.com/kb/hardware?hsLang=en#audio) # EPOS SDW 10 HS — Diagnostics (Audiobox V2 and standalone connection) ## This article covers two configurations: the headset used through the Hub Receiver of an Audiobox V2, and the headset used on its own, with its dongle plugged directly into a workstation (standalone connection). The LED reference table and FAQ at the end apply to both cases. ### Before you start - The headset is charged (30 minutes minimum on the base if in doubt). - The USB dongle of the matching color is properly inserted, with no play. - On Audiobox V2: the Corebox V1 must run at least **Producer 3.13.1.X** and **RoomManager 1.1.4.0** (1.4.1.2 for automatic headset configuration). Below these versions, contact support before any further check. - Order to respect everywhere (dongles, pairing, charging): **Blue – Pink – Yellow – Purple – Green**. | Symptom | Section to consult | | --- | --- | | No sound on a headset connected via the Audiobox | Part 1 | | A dongle on the Hub Receiver stays off | Part 1 | | Pairing fails on the Audiobox | Part 1, then Part 2 to isolate the cause | | Headset tested on its own, without the Audiobox | Part 2 | ### Part 1 — Diagnostics on Audiobox V2 ![](https://support.medinbox.com/hs-fs/hubfs/image-png-Sep-11-2026-12-24-00-5660-PM.png?width=409&height=234&name=image-png-Sep-11-2026-12-24-00-5660-PM.png) **Headset not detected or no sound** 1. Check that the Audiobox is powered on (ON/OFF) and that the "audiobox" cable (green) is connected at both ends. 2. Check that the Hub Receiver is powered and switched on (Power button) and that the dongles show a steady blue light. 3. Remove and reinsert the affected dongle, in the order blue, pink, yellow, purple, green. 4. Check the USB A/B cable: USB B → Hub Receiver, USB A → Corebox (USB port 1). 5. Take the headset off its base; if it stays off, hold ON/OFF for 3 seconds until you hear "Power ON". 6. If there's still no sound, redo the pairing (see below). *The Audiobox charging base carries no data; it is used for charging only.* **Pairing fails** 1. Take the headset off its base and confirm it is switched on. 2. Press the button on the matching dongle: the light should flash blue and red. 3. Double-click the headset's ON/OFF button to check it is flashing blue; otherwise, hold ON/OFF for 3 seconds ("Power ON"). 4. Press ON/OFF and Mute at the same time. Wait for "Gap Pairing", then "Pairing Successful". 5. Place the headset back on its base and repeat for each remaining headset, in the order indicated. > Pair one headset at a time: two dongles left in pairing mode at once can pick up the wrong headset. If pairing keeps failing for a single headset while the other four pair normally, test it in standalone connection (Part 2) to isolate the fault. **Headset overview** ![](https://support.medinbox.com/hs-fs/hubfs/image-png-Sep-11-2026-01-42-24-4223-PM.png?width=604&height=427&name=image-png-Sep-11-2026-01-42-24-4223-PM.png) ### Part 2 — Diagnostics in standalone connection ![](https://www.onedirect.fr/media/catalog/product/cache/aa0ba86914834d3bc3e1ab8fdcec579e/i/m/impact_sdw_10_a3_hb_3dview.jpg) ![](https://www.eposaudio.com/globalassets/__pim/products/accessories/sdw-d1-usb/3c60deee-6b0e-4ceb-91af-b644d1dd6c56_11059_sdw-d1-usb_dongle_fullsizepng.png?width=360)![](https://www.eposaudio.com/globalassets/__pim/products/accessories/ch-30-usb/37755544-6ec7-42a8-bd97-5f5b92281f26_48756_ch-10_cable_2_fullsizepng.png?width=860)  The dongle is plugged directly into the USB port of a workstation (computer, Corebox), bypassing the Hub Receiver. This isolates the headset/dongle pair from the rest of the installation. 1. Unplug the dongle from the Hub Receiver if applicable, then plug it into a free USB port on the workstation to be tested. 2. Check that the dongle's light turns steady blue after a few seconds. 3. Take the headset off its base; if it doesn't turn on, hold ON/OFF for 3 seconds ("Power ON"). 4. If the light never turns steady blue, redo the pairing: press the dongle button (flashing blue/red), then ON/OFF + Mute together on the headset, until "Gap Pairing" then "Pairing Successful". 5. Test sound and microphone directly on the workstation, independently of any Medinbox software. - **Test successful**: the fault lies with the Hub Receiver, the USB A/B cable, or the Corebox software version → go back to Part 1. - **Test still negative**: likely a hardware fault in the headset or dongle → contact Medinbox support. ### LED reference table | Component | Light observed | Meaning | Action | | --- | --- | --- | --- | | Dongle | Steady blue | Headset paired and connected | None — normal operation | | Dongle | Off | Not powered or poorly inserted | Reconnect the dongle; check Hub Receiver power | | Dongle | Flashing blue/red | Pairing mode active | Complete pairing on the matching headset | | Headset | Off on the base | Switched off or discharged | Hold ON/OFF for 3 s; recharge if needed | | Headset | Flashing blue | On, not paired | Start pairing (ON/OFF + Mute) | | Headset | "Pairing Successful" prompt | Pairing successful | Place the headset back on its base | ### FAQ **The dongle stays steady blue but no sound gets through?** Check the USB A/B cable between the Hub Receiver and the Corebox, then the Producer and RoomManager versions. **Does the color order matter?** Yes, both on the Audiobox and in standalone connection: blue, pink, yellow, purple, green. **The headset works on its own but not on the Audiobox, what now?** Check the Hub Receiver, the USB A/B cable, and the Corebox software versions before contacting support. --- *Medinbox Customer Technical Support — +33 5 31 98 07 56 — support@medinbox.com*   - [Corebox](https://hub.medinbox.com/kb/corebox?hsLang=en#main-content) - [Getting started](https://hub.medinbox.com/kb/corebox?hsLang=en#getting-started) - [Product-specific Troubleshooting](https://hub.medinbox.com/kb/corebox?hsLang=en#product-specific-troubleshooting) - [Air](https://hub.medinbox.com/kb/air?hsLang=en#main-content) - [Getting started](https://hub.medinbox.com/kb/air?hsLang=en#getting-started) - [Product-specific Troubleshooting](https://hub.medinbox.com/kb/air?hsLang=en#product-specific-troubleshooting) - [Hardware](https://hub.medinbox.com/kb/hardware?hsLang=en#main-content) - [PC](https://hub.medinbox.com/kb/hardware?hsLang=en#pc) - [Audio](https://hub.medinbox.com/kb/hardware?hsLang=en#audio) - [Cameras](https://hub.medinbox.com/kb/hardware?hsLang=en#cameras) - [Capture Cards](https://hub.medinbox.com/kb/hardware?hsLang=en#capture-cards) - [Displays](https://hub.medinbox.com/kb/hardware?hsLang=en#displays) - [Storage](https://hub.medinbox.com/kb/hardware?hsLang=en#storage) - [Applications](https://hub.medinbox.com/kb/applications?hsLang=en#main-content) - [Producer](https://hub.medinbox.com/kb/applications?hsLang=en#producer) - [Case Library](https://hub.medinbox.com/kb/applications?hsLang=en#case-library) - [Microsoft Windows](https://hub.medinbox.com/kb/applications?hsLang=en#microsoft-windows) - [Communication Apps](https://hub.medinbox.com/kb/applications?hsLang=en#communication-apps) - [Intercom](https://hub.medinbox.com/kb/intercom?hsLang=en#main-content) - [Getting Started](https://hub.medinbox.com/kb/intercom?hsLang=en#getting-started) - [Product-specific Troubleshooting](https://hub.medinbox.com/kb/intercom?hsLang=en#product-specific-troubleshooting) Copyright © 2026, Medinbox