The LG HT904TA-A0P is a high-performance home theater system featuring 5.1 channel surround sound, DVD playback, USB connectivity, FM radio tuner, multiple audio format support, and HDMI output. Designed for immersive audio experiences, it includes a main receiver unit, five satellite speakers, a subwoofer, remote control, and various connectivity options. Below are key sections covering setup, features, operation, and maintenance.
Key components: Main receiver unit with integrated DVD player, 5 satellite speakers, subwoofer, Remote Control, HDMI OUT, USB port, FM antenna input, AV input/output jacks.
| Feature | Description |
|---|---|
| HDMI OUT | For digital audio/video output to TV or display |
| USB port | For playing media files from USB storage devices |
| FM antenna connector | For FM radio reception |
| AV INPUT jacks | Composite video and L/R audio inputs for external sources |
| AC power input | For power connection |
| Speaker terminals | For connecting satellite speakers and subwoofer |
| POWER | Turns system on/off |
| OPEN/CLOSE | Ejects disc from DVD tray |
| MUTE | Mutes audio output |
| INPUT SELECT | Switches between DVD, USB, FM, AUX inputs |
Unpack all components carefully. Place main unit on stable, well-ventilated surface.
WARNING! System components are heavy; lift with care. Ensure proper ventilation around main unit.
Power on system; follow initial setup prompts.
CAUTION! Keep speakers away from heat sources and moisture. Do not block ventilation openings.
Access menu system via remote or front panel buttons. Front Panel: POWER, OPEN/CLOSE, PLAY/PAUSE, STOP, INPUT SELECT, VOLUME knob.
Remote: POWER, Numeric buttons, MENU, NAVIGATION arrows, ENTER, RETURN, AUDIO MODE, SUBTITLE, ANGLE, ZOOM, REPEAT.
Audio Settings: Surround modes (MOVIE, MUSIC, GAME, NIGHT), equalizer presets, speaker distance/level calibration. Video Settings: HDMI resolution (480p, 720p, 1080i), TV aspect ratio (16:9, 4:3). System Setup: Language, parental lock (default password 0000), factory reset.
TV: HDMI connection recommended. Game consoles/media players: Use AV INPUT or optical input. USB: Direct connection to front USB port.
Tip: For optimal audio, set TV audio output to PCM or Bitstream via HDMI.
Supports DVDs, audio CDs, USB media files.
WARNING! Do not move system during disc playback. Use compatible USB formats (FAT32).
Surround Sound Modes: MOVIE (enhanced dialogue), MUSIC (concert hall), GAME (spatial effects), NIGHT (compressed dynamic range). Equalizer Presets: Flat, Rock, Pop, Jazz, Classic. Speaker Calibration: Manual level and distance adjustment for each channel.
Unplug from power before cleaning. Use soft, dry cloth for exterior. For stubborn stains, dampen cloth slightly with water only.
CAUTION! Never use abrasive cleaners or solvents. Keep liquids away from vents and openings.
FCC Compliance: Class B digital device; complies with Part 15 rules. Interference may occur in residential installations. Copyright © 2025 LG Electronics Inc. All rights reserved. For customer support, visit www.lg.com or contact LG Customer Service at 1-800-243-0000.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| No power | Power cord not connected | Check power cord connection; ensure outlet is working. |
| No sound from speakers | Wrong input/volume/mute | Select correct input; increase volume; check mute status. |
| Disc not recognized | Disc dirty/incompatible | Clean disc; ensure format is supported (DVD, CD, MP3). |
| USB not detected | Format incompatible | Reformat USB to FAT32; ensure files are supported formats. |
| Poor FM reception | Antenna placement | Extend FM antenna fully; reposition for better signal. |
| Remote not working | Batteries/obstructions | Replace batteries; ensure clear line of sight to sensor. |
Reset: Hold POWER button on main unit for 10 seconds to reset system.
Service: 1-800-243-0000; www.lg.com/support