Brand: YAMAHA
Category: Audio/Video
Document Type: Manual
Language: EN
Manual for YHT-S401
Uploaded: Nov. 21, 2025, 6:07 p.m.
Warranty Information
For detailed guarantee information, visit the Yamaha website or contact your local representative office.
- Getting Started: Unpack components, prepare remote control, and understand front/rear panel controls.
- Preparation: Place unit in a well-ventilated area, away from heat and moisture. Learn how to attach the speaker to a wall or use the keyholes. Connect speakers, TV, and BD player.
- Basic Operation: Turn on the unit, select input source, start playback, adjust volume and subwoofer levels, and choose sound modes (Surround, Stereo, Clear Voice). Listen with headphones.
- Enjoying Sound Modes: Utilize different surround modes (Movie, Music, Sports, Game, TV Program, Standard) for enhanced audio. Explore Stereo and Extended Stereo modes. Use Compressed Music Enhancer and UniVolume for optimized playback. Adjust speaker volume balance.
- Listening to FM Broadcasts: Tune into radio stations, preset stations manually or automatically, clear presets, and use monaural reception mode if needed.
- Playing Back iPod/iPhone and USB Device: Connect your device, play audio files, and charge the device. Features include repeat/shuffle playback, displaying music information, and firmware updates.
- Useful Operation: Access setup menus for speaker levels, tone control, HDMI settings, display mode, speaker setup, firmware, dynamic range, and matrix decode.
- Operating by TV's Remote Control: Utilize HDMI control function for TV remote operation. Learn how to register HDMI components and change connection methods.
Troubleshooting and error codes
| Problem | Cause | Solution | See page |
|---|---|---|---|
| Power turns on but immediately shuts off. | The power cable may be connected improperly. | Make sure the power cable is plugged into the outlet firmly. | 8 |
| A speaker cable may be shorted. | Make sure all speaker cables are connected properly. | 8 | |
| This unit may have received a strong electrical shock, such as from a lightening bolt or excessive static electricity. | Set this unit to standby mode, and then disconnect the power cable. Wait for about 30 seconds, connect the power cable, and then turn the unit on again. | 10 | |
| The speakers make no sound. | The volume may be set to minimum level. | Adjust the volume level. | 10, 19 |
| The mute function may be activated. | Cancel the mute function. | 10 | |
| The input source or input setting may be incorrect. | Select the correct input source or input setting. | 10 | |
| The cables may be connected improperly. | Make sure all cables are connected properly. | 8 | |
| "3-2:AUDIO" in the setup menu "3:HDMI SETUP" is set to "TV". | Set "3-2:AUDIO" in the setup menu "3:HDMI SETUP" to "AMP". | 19 | |
| "3-1:CONTROL" in the setup menu "3:HDMI SETUP" is set to "OFF" in setup menu. | When connecting ARC (Audio Return Channel) supported TV and this unit using HDMI cable only, set "3-1:CONTROL" in the "3:HDMI SETUP" to "ON". | 19 | |
| The headphone is connected. | Connect coaxial digital input jack and TV's audio output jack using a digital audio pin cable. | 9 | |
| Sound is too low on one side. | The cables may be connected improperly. | Make sure all cables are connected properly. | 8 |
| Speaker channels other than the front ones make no sound. | You may be listening to stereo sounds without surround mode. | Press the SURROUND button to play back in sound mode. | 11 |
| "1:SP LEVEL" in the setup menu "1-4:SURROUNDL"/"1-5:SURROUNDR" is set to minimum level. | Adjust "1:SP LEVEL" in the setup menu "1-4:SURROUND L"/"1-5:SURROUND R". | 19 | |
| "5-1:SP CHANNEL" is set to "2CH" or "3CH" in setup menu. | Set "5-1:SP CHANNEL" to "4CH" or "5CH". | 20 | |
| The subwoofer makes no sound. | The volume of the subwoofer channel may be set to minimum level. | Adjust the volume level of the subwoofer. | 5, 19 |
| The source does not contain low-frequency signals. | - | - |