Brand: SONY
Category: Audio
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for MDR-RF985RK
Uploaded: Nov. 21, 2025, 6:40 p.m.
Warranty Information
1-year limited warranty for parts and labor.
1. Connect the A/V component:
Plug the audio cable into the AUDIO OUT jack of your A/V component and the other end into the transmitter.
2. Charge the headphones:
Place the headphones on the transmitter and plug the AC adapter into a power outlet.
3. Using the A/V component:
Connect the A/V component to the transmitter using the provided cables. Ensure correct connections for audio output.
4. Wear the headphones:
Adjust the headband for a comfortable fit.
5. Start playback:
Turn on your A/V component and start playback. The headphones will automatically connect and play audio.
6. Adjust the volume:
Use the volume control on the headphones to set the desired listening level.
After use:
Turn off the A/V component and place the headphones on the transmitter for charging.
Plug the audio cable into the AUDIO OUT jack of your A/V component and the other end into the transmitter.
2. Charge the headphones:
Place the headphones on the transmitter and plug the AC adapter into a power outlet.
3. Using the A/V component:
Connect the A/V component to the transmitter using the provided cables. Ensure correct connections for audio output.
4. Wear the headphones:
Adjust the headband for a comfortable fit.
5. Start playback:
Turn on your A/V component and start playback. The headphones will automatically connect and play audio.
6. Adjust the volume:
Use the volume control on the headphones to set the desired listening level.
After use:
Turn off the A/V component and place the headphones on the transmitter for charging.
Troubleshooting and error codes
| If you cannot receive a clear audio signal | Noise Reduction process | ||
|---|---|---|---|
| The transmitter and headphones are too far apart. | Move the transmitter and headphones closer together. | The transmitter and headphones are too far apart. | Move the transmitter and headphones closer together. |
| Signal is blocked by objects. | Remove any obstacles between the transmitter and headphones. | The audio signal range is too narrow. | Ensure the transmitter is placed in an open area, away from obstructions. |
| Interference from other wireless devices. | Turn off other wireless devices or move them away from the transmitter and headphones. | The audio signal range is too narrow. | Ensure the transmitter is placed in an open area, away from obstructions. |
| The A/V component is not powered on or is not sending an audio signal. | Ensure the A/V component is powered on and set to output audio. Check the A/V component's audio output settings. | The audio signal range is too narrow. | Ensure the transmitter is placed in an open area, away from obstructions. |
| The headphones are not properly placed on the transmitter for charging. | Ensure the headphones are correctly positioned on the charging contacts of the transmitter. | The audio signal range is too narrow. | Ensure the transmitter is placed in an open area, away from obstructions. |
| The battery in the headphones is low. | Place the headphones on the transmitter to charge. | The audio signal range is too narrow. | Ensure the transmitter is placed in an open area, away from obstructions. |