Basic Troubleshooting Guide for the SD Pro Series

Note: We don’t carry this headset, so our knowledge on it is limited to the content of this article. Hope this gets you what you need!

Here are some common issues that may occur with the SD Pro headset from Sennheiser, along with some troubleshooting you can try to get back up and running!

No Sound in Headset:

For this, first double-check your connections to make sure you're hooked up correctly. For help with this see our Sennheiser Wireless Setup Article. Be sure to also make sure your headset in on the correct mode (Telephone Mode vs Computer Mode) and that you're turning the headset on and pressing the headset button on your telephone if needed.

Echo (On Your Caller's End):

A good starting point to correct this would be to check the compatibility switch underneath the base. The dial toggles from “A” to “C” and on most phone systems works best on “A”

Echo (On Your End) and Low Mic Volume:

If you’re experiencing an echo with the SD Pro, or find that people say you too soft or too loud, then adjusting the microphone volume will usually correct this. To adjust the volume, turn the white microphone volume underneath the charging base to the desired volume. Lowering the microphone volume will usually help to correct an echo.

Basic Reset:

If none of the above troubleshooting solved your issue, try these steps basic:

1. Take the headset out of the charging base
2. Unplug the power adapter cord from the bottom of the base
3. Place headset on the charging base
4. Plug in the power adapter cord

If the above reset does not correct the headset you can further the reset procedure between steps (2) and (3) by removing the battery from the headset.

Dip Switch Reset:

If the reset above failed, here's one more reset you can try!

1. With the headset in the base, remove the AC/DC power cord from the back of the base (under the yellow label)
   Note: if the USB cord (under orange label) is being used, unplug that as well.
2. Move all 6 white Dip Switches DOWN located on the back of the base next to the power cord
3. Plug the AC/DC cord back into the base
4. Wait for 20 seconds, and then put all dip switches in the UP position and then put # 5 back down
5. Now wait for 1 minute or until blue light on headset appears and then test the headset

New Microphone Sync / Manual Pairing

Note: If there’s already a headset paired to the base, make sure it is turned off before syncing a new one otherwise it will conference the two.

1. Remove the headset from the charging cube
2. Press and hold the mute and call control buttons until the headset flashes red and blue
3. Put the headset back into the base. The light on the headset will turn blue when the pairing is complete

Time for a new headset?

Many Sennheiser users have switched to the Leitner LH670!

Heather

May 04, 2023

microphone is not working, just stopped mid phone call. I can use ear piece to take messages off machine but cannot call people. Using a model D 10 BS Phone. Approximately 24 months old

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Headset Answers replied:
It sounds like the microphone in your SD Pro headset has gone out. We’d recommend reaching out to the seller that you purchased your headset from or to Sennheiser so they can check your warranty for you. Sennheiser can be reached at 1-800-736-6434. Hopefully, you can get a replacement for your headset!