Sharp SY-SAT50DV SD-AT50DV SYS-AT50DV Operation Manual - Page 54

References - Troubleshooting chart - SD-AT50 DX-AT50 ENGLISH 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 No sound is heard. The sounds from speakers are not well balanced. Noise is heard during playback. When a button is pressed, the system does not respond. Interference or noise occurs on the TV image. Timer playback does not start. The display on the system is dark. The power is not turned on. Possible cause ! Is the volume level set to "0"? ! Are the headphones connected? ! Are the speaker wires disconnect- ed? ! Is the speaker size set to NO (OFF)? ! Are the speaker cords connected to the wrong channels? ! Is each speaker placed at the same distance from the listener? ! Are speakers adjusted to the same level? ! Move the system away from any computers or mobile phones. ! Set the system to the power stand- by mode and then turn it back on. If the system still malfunctions, reset it. ! Is the system placed near TV with internal antenna? Use an outdoor antenna. ! Did you remove the plug from the wall jack, or did a power failure occur? ! Hold down the DISPLAY button on the remote control for 2 seconds or more to select "ON". ! Is the system unplugged? ! Is the system connection cord (for DVD player) disconnected? ! The protection circuit may be activated. Unplug and plug in the power cord again after 5 minutes or more. Reference page P. 18 P. 28 P. 12 P. 41 P. 12 P. 16 P. 42 P. 50 P. 13 P. 24 P. 18 P. 18 P. 11 P. 50 Symptom Possible cause The sound is not reproduced in the Dolby Digital 5.1 ch. No images are displayed. ! Is the initial setup screen set to "DPCM"? Change it to "BITSTREAM". ! Is TV turned on? ! Is the input of TV switched? Reference page P. 20 P. 47 P. 47 " Tuner Symptom Radio makes unusual noise consecutively. Possible cause ! Is the system placed near the TV or computer? ! Is the FM antenna or AM loop antenna placed properly? Move the antenna away from the AC power cord or the system if located near. Reference page P. 13 P. 13 " Remote control Symptom Possible cause The remote control does not operate properly. The system cannot be turned on with the remote control. ! Is the battery polarity respected? ! Are the batteries dead? ! Is the distance or angle incorrect? ! Are there any obstructions in front of the AV control unit? ! Is the remote control sensor exposed to strong light (inverter fluorescent light, direct sunlight, etc.)? ! Is the remote control for another equipment used simultaneously? ! Are buttons on the front and back faces of the remote control pressed simultaneously? ! Are the AC power cords of the DVD player and the subwoofer/amplifier unit plugged in? ! Are the batteries inserted? Reference page P. 17 P. 17 P. 17 P. 18 P. 17 E-49