Brand: SHARP
Category: Audio
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for HT-SB603
Uploaded: Nov. 21, 2025, 6:10 p.m.
Warranty Information
This product comes with a one-year limited warranty covering parts and labor.
Sound Bar Setup: Ensure proper ventilation. Mount on a firm, level surface or wall, away from direct sunlight, magnetic fields, dust, and humidity. Connect AC power cord.
Connections: Connect TV via HDMI ARC (Method 1) or other HDMI (Method 2). For TVs without ARC, use audio cables (optical, headphone, or RCA).
Wireless Subwoofer: Ensure it's within 32 feet (10m) of the sound bar. Pair manually if not connected automatically.
Bluetooth: Enable NFC on your device and tap it to the sound bar's NFC detection area for one-touch pairing. Manual pairing is also available.
Playback: Select input source using the INPUT button. Use remote or sound bar controls for volume, sound modes, and playback functions.
Connections: Connect TV via HDMI ARC (Method 1) or other HDMI (Method 2). For TVs without ARC, use audio cables (optical, headphone, or RCA).
Wireless Subwoofer: Ensure it's within 32 feet (10m) of the sound bar. Pair manually if not connected automatically.
Bluetooth: Enable NFC on your device and tap it to the sound bar's NFC detection area for one-touch pairing. Manual pairing is also available.
Playback: Select input source using the INPUT button. Use remote or sound bar controls for volume, sound modes, and playback functions.
Troubleshooting and error codes
| Symptom | Possible cause |
| No sound is heard. | Is the input signal (selection) set properly? Is the volume level set to "MIN"? Is muting activated? Is HDMI compliant equipment being used? Is the HDMI cable connected correctly? Connect the HDMI cable correctly and then perform the reset procedure. Do not connect or disconnect an HDMI cable while power is on. This may lead to operation problems. |
| The sound from subwoofer is not well balanced. | Is the subwoofer level set to the minimum or maximum level? |
| Power turns off suddenly. | Is the HDMI cable connected correctly? Connect the HDMI cable correctly and then perform the reset procedure. |
| Noise is heard during playback. | Move the speaker away from any computers or mobile phones. Set the sound bar to the standby mode and then turn it back on. |
| When a button is pressed, the sound bar does not respond. | Is the sound bar unplugged? The protection circuit may be activated. Unplug and plug in the power cord again after 5 minutes or more. |
| The power is not turned on. | Is the battery inserted? |
| 3D images and 4K content not displayed on the TV. | Depending on the TV and Video component, 3D images and 4K content may not be displayed. Check the operation manual of the respective component. HDMI cable not support 3D images and 4K content. |
| Background noise appears when connecting with RCA audio output terminal connection from a TV-set/DVD/Blu-ray Disc Player. | Please change to HDMI/ARC or headphone terminal from TV-Set/ DVD/Blu-ray Disc Player. This effect may occur depending on TV/DVD/Blu-ray Disc Player- Brand, model and age, and it is not the sound bar problem. |
| Wireless connection cannot be established. | Check the distance between the sound bar and subwoofer (less than 32 feet (10 meters)). Make sure there is no other wireless devices near the unit. Make sure there is no obstacles (especially metal) blocking between the sound bar and subwoofer. Manually re-link the sound bar and subwoofer (refer page 13). |
| The remote control does not operate properly. | Is the battery polarity correct? Is the battery dead? Is the distance or angle incorrect? Are there any obstructions in front of the sound bar? Is there a strong light shining on the remote sensor? Is the remote control for another equipment used simultaneously? |
| The sound bar cannot be turned on with the remote control. | Is the AC power cord of the sound bar plugged in? Is the battery inserted? |
| No sound is heard. (NFC/Bluetooth) | The unit is too far from the Bluetooth stereo audio source device. The unit is not paired with the Bluetooth stereo audio source device. |
| Bluetooth sound is interrupted or distorted. | The unit is too near to a device that generates electromagnetic radiation. There is an obstacle between the unit and the Bluetooth stereo audio source device. Sound bar is not in Bluetooth pairing mode. Perform "NFC connection for audio playback". (Refer page 17.) |
| NFC-enabled device cannot connect to Bluetooth via NFC tag. | Sound bar is not in Bluetooth pairing mode. Perform "NFC connection for audio playback". (Refer page 17.) |
| Device cannot be detected. (USB) | There is no MP3/WMA file inside the device. The device is not properly plugged in. A MTP device is plugged in. The device contains AAC file only. |
| Playback does not start. (USB) | A copyright-protected WMA or false MP3 file is being played back. |