LG AK495 Service Manual

The LG AK495 is a high-performance home theater system featuring 5.1 channel surround sound, Bluetooth connectivity, USB playback, HDMI connectivity, NFC pairing, wireless rear speakers, and multiple audio inputs. Below are key sections for technical specifications, installation, operation, troubleshooting, and maintenance procedures.

Technical Specifications

Key technical details: 5.1 channel surround sound, total power output 1000W, multiple connectivity options.

Specification	Details
Audio Channels	5.1 Channel Surround Sound
Total Power Output	1000W RMS
Bluetooth Version	4.0 with NFC pairing
HDMI Ports	3 Inputs, 1 Output (ARC)
USB Port	USB 2.0 for media playback
Optical Input	1 Digital Optical Input
Wireless Rear Speakers	2.4GHz wireless technology
Frequency Response	20Hz - 20kHz
Power Supply	AC 120V, 60Hz
Dimensions (Main Unit)	430mm x 105mm x 323mm

System Components

Complete package includes main unit, speakers, remote control, and accessories.

1. Main Soundbar Unit with built-in amplifier and controls
2. Front Left/Right Speakers
3. Center Channel Speaker
4. Wireless Rear Speakers (2 units)
5. Powered Subwoofer
6. Remote Control with batteries
7. HDMI Cables (2 units)
8. Optical Cable
9. Speaker connection cables
10. Wall mounting brackets and screws

NOTE! Verify all components are present before installation.

Installation Guide

Proper setup for optimal performance and safety.

1. Position main soundbar below or above TV, ensuring clear path for IR sensor.
2. Place front speakers at ear level, 6-8 feet apart for optimal stereo imaging.
3. Position wireless rear speakers behind listening area, 3-4 feet above ear level.
4. Place subwoofer in corner of room for enhanced bass response.
5. Connect all speakers to appropriate terminals on main unit or subwoofer.
6. Plug power cord into AC outlet after all connections are complete.

WARNING! Ensure proper ventilation around main unit; do not block heat sinks.

Connection Setup

Multiple input options for various audio sources.

1. HDMI Connection: Connect source devices to HDMI IN ports; connect HDMI OUT to TV.
2. Optical Connection: Use digital optical cable from TV to system's optical input.
3. Bluetooth Pairing: Enable Bluetooth on device and select "LG AK495" from available devices.
4. USB Playback: Insert USB drive with supported audio files into USB port.
5. Aux Input: Use 3.5mm audio cable for analog audio sources.

Tip: Use HDMI ARC for simplified audio control with TV remote.

Operation Instructions

Basic operation and sound mode selection.

Power: Press POWER button on main unit or remote to turn on/off.

Input Selection: Use INPUT button to cycle through available sources (HDMI, Optical, Bluetooth, USB, Aux).

Sound Modes: Select from CINEMA, MUSIC, SPORTS, GAME, or STANDARD sound profiles.

Volume Control: Use VOLUME buttons on remote or main unit; range 0-50.

Bass/Treble Adjustment: Access sound settings menu for detailed audio customization.

Remote Control Functions

Complete remote control operation guide.

Button	Function
POWER	Turns system on/off
INPUT	Selects audio source
VOLUME +/-	Adjusts master volume
MUTE	Temporarily mutes audio
SOUND MODE	Cycles through sound profiles
PLAY/PAUSE	Controls media playback
SKIP	Previous/next track
BASS	Adjusts bass level (-6 to +6)
TREBLE	Adjusts treble level (-6 to +6)
SETUP	Accesses system settings menu

Bluetooth Connectivity

Wireless audio streaming capabilities.

1. Press BLUETOOTH button on remote or main unit to enter pairing mode.
2. Enable Bluetooth on your smartphone, tablet, or computer.
3. Select "LG AK495" from available devices list.
4. For NFC pairing: Tap NFC-enabled device to NFC logo on main unit.
5. Once connected, audio will automatically stream from paired device.

NOTE! Maximum Bluetooth range is approximately 33 feet (10 meters).

USB Playback

Media playback from USB storage devices.

1. Insert USB drive with supported audio files (MP3, WMA, AAC).
2. System will automatically detect and begin playback.
3. Use remote control to navigate folders and select tracks.
4. Supported formats: MP3 (32-320kbps), WMA (32-192kbps), AAC.
5. Maximum supported capacity: 64GB FAT32 formatted drives.

WARNING! Safely eject USB drive using STOP function before removal.

Troubleshooting

Common issues and solutions for optimal performance.

Symptom	Possible Cause	Corrective Action
No power	Power cord disconnected	Check power connection; ensure outlet is working
No sound from speakers	Wrong input selected	Verify correct input source; check volume level
Bluetooth not connecting	Pairing mode not active	Enter pairing mode; ensure device is in range
Rear speakers not working	Wireless connection lost	Reset wireless connection; check power to speakers
USB not recognized	Unsupported format/capacity	Use FAT32 format; ensure capacity under 64GB
Remote not working	Batteries/obstructions	Replace batteries; ensure clear path to IR sensor

Maintenance & Service

Proper care and maintenance procedures.

1. Regularly clean speaker grilles with soft, dry cloth.
2. Keep ventilation openings clear of dust and obstructions.
3. Avoid exposure to extreme temperatures or moisture.
4. Use compressed air to clean hard-to-reach areas.
5. For internal service, contact authorized LG service center only.

CAUTION! Do not use liquid cleaners or aerosols on any components.

Safety Information

Important safety precautions and regulatory compliance.

• Electrical Safety: Use only with proper voltage (120V AC).
• Ventilation: Maintain minimum 4-inch clearance around all sides.
• Moisture: Keep away from water and humid environments.
• Heat Sources: Do not place near radiators or heat registers.
• FCC Compliance: Class B digital device compliant with Part 15 rules.
• Service: Contact LG Support at 1-800-243-0000 or visit www.lg.com.

WARNING! No user-serviceable parts inside. Refer servicing to qualified personnel.