Sharp HT-SB300 HT-SB300 Operation Manual - Page 22

References HT-SB300 22 Troubleshooting chart Many potential problems can be resolved by the owner without calling a service technician. If something is wrong with this product, check the following before calling your authorized SHARP dealer or service center. ■ General Symptom Possible cause No sound is heard. ● Is the input signal (selection) set properly? ● Is the volume level set to "0"? ● Is muting activated? Noise is heard during playback. ● Move the speaker away from any computers or mobile phones. When a button is pressed, the speaker does not respond. ● Set this speaker to the stand-by mode and then turn it back on. The power is not turned on. ● Is the speaker unplugged? (Refer to page 17) ● The protection circuit may be activated. Unplug and plug in the power cord again after 5 minutes or more. The information is not ● Is the unit set to "Dimmer display off" displayed even if the unit mode? is turned on. ■ Remote control Symptom Possible cause The remote control does ● Is the battery polarity correct? not operate properly. ● Is the battery dead? ● Is the distance or angle incorrect? ● Are there any obstructions in front of the speaker? ● Is there a strong light shining on the remote sensor? ● Is the remote control for another equipment used simultaneously? Symptom Possible cause The speaker cannot be ● Is the AC power cord of the speaker turned on with the plugged in? remote control. ● Is the battery inserted? TV cannot be operated with the remote control. ● Depending on the model, some or all functions may not be operable using the remote control of this speaker. In this case, use the remote control supplied with the TV. ■ Condensation Sudden temperature changes, storage or operation in an extremely humid environment may cause condensation inside the cabinet or on the transmitter on the remote control. Condensation can cause the speaker to malfunction. If this happens, leave the power on until normal operation is possible (about 1 hour). Wipe off any condensation on the transmitter with a soft cloth before operating the speaker. ■ If problem occurs When this product is subjected to strong external interference (mechanical shock, excessive static electricity, abnormal supply voltage due to lightning, etc.) or if it is operated incorrectly, it may malfunction. If such a problem occurs, do the following: 1. Set the speaker to the stand-by mode and turn the power on again. 2. If the speaker is not restored in the previous operation, unplug and plug in the speaker, and then turn the power on. Maintenance ■ Cleaning the cabinet Periodically wipe the cabinet with a soft cloth. Caution: ● Do not use chemicals for cleaning (gasoline, paint thinner, etc.). It may damage the cabinet finish. ● Do not apply oil to the inside of each component. It may cause malfunctions.