01.ENG_QC3.fm Page 1 Tuesday, March 31, 2009 4:34 PM
Bose QuietComfort 3 Acoustic Noise Cancelling Headphones
Owners Guide Guia de usuario Notice dutilisation
01.ENG_QC3.fm Page 2 Tuesday, March 31, 2009 4:34 PM

Safety Information

Please read this owners guide Please take the time to follow the instructions in this owners guide carefully. It will help you to properly use your new Bose product and enjoy its features. Please save this owners guide for future reference. WARNINGS
To reduce the risk of fire or electric shock, do not expose the battery charger to rain or moisture. Do not expose the charger to dripping or splashing of liquids. The battery charger must be used indoors. It is neither designed nor tested for use outdoors, in recreation vehicles, or on boats. Charge the battery only on a charger approved by Bose Corporation. Do not continue charging the battery if it does not reach full charge within the specified charging time. Doing so may cause the battery to become hot, rupture, or ignite. If you see any heat deformation or leakage, properly dispose of the battery. Do not expose the battery to temperatures greater than 212F (100C). If exposed to excessive heat, the battery can catch fire and explode. Do not place the battery in direct sunlight, or use or store it inside cars in hot weather where it can be exposed to temperatures in excess of 140F (60C). Doing so may cause the battery to generate heat, rupture, or ignite. Using the battery in this manner also may result in a loss of performance and a shortened life expectancy. Do not short circuit the battery. Avoid placing it around metal objects such as keys, pocket change, paper clips, and jewelry. Do not hit the battery with a hammer, step on, throw or drop it to expose it to a strong shock. Do not pierce the battery with a sharp object such as a nail. Do not crush, dent, or deform the battery in any way. If the battery becomes deformed, properly dispose of it. The battery used in this device may present a risk of fire or chemical burn if mistreated. Do not disassemble, heat above 212F (100C), or incinerate. Replace battery with Bose part PC40229 only. Use of another battery may present a risk of fire or explosion.

Franais

Espaol

English

CAUTIONS
Do not allow the battery to get wet. Avoid using it in high humidity environments. Avoid electrostatic discharge to the battery. Do not drop or sit on the headphones, or allow them to be immersed in water. Long-term exposure to loud music may cause hearing damage. It is best to avoid extreme volume when using these headphones, especially for extended periods. Do not use these headphones when operating a motor vehicle on a public road, or where the inability to hear outside sounds may present a danger to you or others. Sounds that you rely on as reminders or warnings may have an unfamiliar character when you are using the headphones. Be aware of how these sounds vary in character, so you can recognize them as needed.
Please dispose of used or damaged batteries promptly and properly, following any local regulations. Keep away from children. Do not incinerate. To return batteries for recycling, contact Bose or your Bose dealer. In the United States only, call 1-800-905-2180. For other regions, see the contact information on the inside back cover. This product conforms to the EMC Directive 89/336/EEC and to the Low Voltage Directive 73/23/EEC. The complete Declaration of Conformity can be found at www.bose.com/static/compliance/index.html.

2009 Bose Corporation. No part of this work may be reproduced, modified, distributed, or otherwise used without prior written permission.
01.ENG_QC3.fm Page 3 Tuesday, March 31, 2009 4:34 PM
Important Safety Instructions

1. 2. 3. 4. 5.

6. 7. 8. 9. 10. 11.
Read these instructions for all components before using this product. Keep these instructions for future reference. Heed all warnings on the product and in the owners guide. Follow all instructions. Do not use this product near water or moisture Do not use this product near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, near a swimming pool, or anywhere else that water or moisture are present. Clean only with a dry cloth and as directed by Bose Corporation. Unplug the battery charger from the wall outlet before cleaning. Do not block any ventilation openings. Install in accordance with the manufacturers instructions. Do not install near any heat sources, such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. Only use attachments/accessories specified by Bose. Unplug the battery charger during lightning storms or when unused for long periods of time to prevent damage to this product. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way: such as power-supply cord or plug is damaged; liquid has been spilled or objects have fallen into the apparatus; the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped Do not attempt to service this product yourself. Opening or removing covers may expose you to dangerous voltages or other hazards. Please call Bose to be referred to an authorized service center near you.

Espaol Franais

Compliance with FCC rules (U.S.A., only)
This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, this is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, you are encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment to an outlet on a different circuit than the one to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help.

NOTICE

FCC WARNING
Changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate this equipment. Proper connections must be used for connection to a host computer and/or peripherals in order to meet FCC emission limits.
01.ENG_QC3.fm Page 4 Tuesday, March 31, 2009 4:34 PM

Welcome

Introducing the QuietComfort 3 Acoustic Noise Cancelling headphones
Thank you for purchasing the QuietComfort 3 Acoustic Noise Cancelling headphones from Bose. Our innovative technologies enable these on-ear headphones to reduce unwanted distractions while providing you with lifelike audio performance and a comfortable fit.
Adjustable headband Rotating earcups
L (left) mark Replaceable ear cushions
R (right) mark Power switch with power indicator Accessories included: Ports
Battery Headphones audio cord

Dual-plug adapter

Battery charger

Carrying case

IMPORTANT: Before initial headphone use, it is important to fully charge the battery for a minimum of two hours. See Charging the battery on page 5.
01.ENG_QC3.fm Page 5 Tuesday, March 31, 2009 4:34 PM
Preparing Your Headphones Charging the battery
Preparing Your Headphones
Initial charging time for a new battery is approximately two hours. After that, charging time varies depending on the battery charge state. 1. Insert the battery into the charger. 2. 3. Swing the plug prongs out of the charger body. Plug the charger into a live AC (mains) outlet. 3 Indicator: On = Charging Off = Charging complete Flashing = See Troubleshooting on page 10.
IMPORTANT: DO NOT STORE A BATTERY IN THE CHARGER. After charging, unplug the battery charger and remove the battery. Storing a battery in the charger diminishes the charged state of the battery over time and may permanently reduce the capacity of the battery.
Battery handling and precautions
The battery does not have to be completely discharged in order to charge it. You can charge the battery at any time. Never leave the battery in a discharged state. Charge after use and before storage. Avoid extreme temperatures when charging the battery. Battery charging should occur within the temperature range of 32F (0C) to 95F (35C). A fully charged battery provides approximately 25 hours of use. Replace the battery when it no longer provides adequate power after charging. To order a replacement battery, see Troubleshooting on page 10. Keep the terminals on the battery, in the charger, and in the right earcup of the headphones clean at all times. Dirty terminals may cause poor electrical connections and affect performance. For cleaning instructions, see Cleaning on page 10.
01.ENG_QC3.fm Page 6 Tuesday, March 31, 2009 4:34 PM

Installing the battery

Be sure to fully charge the battery before first use. See Charging the battery on page 5. 1. 2. Make sure the headphones power switch is off. Hold the headphones right earcup as shown. Insert the battery into the compartment. Be sure to push the battery all the way in until it is flush with the earcup. Battery Headband

Right earcup

Removing the battery for charging
Perform Step 1 and 2 and lift the battery straight up and out of the battery compartment.
01.ENG_QC3.fm Page 7 Tuesday, March 31, 2009 4:34 PM
Using Your Headphones Wearing your headphones

Using Your Headphones

You can use your headphones only for noise reduction or for listening to audio along with the benefit of noise reduction. As you put on the headphones, observe the L (left) and R (right) markings that identify the left and right earcups. Adjust the headband so it rests gently on top of your head and the earcup cushions fit comfortably on your ears.
Using your headphones for audio with noise reduction
For listening to an audio source, you need to use the supplied headphones cord. 1. Plug the appropriate end of the headLeft phones cord into the left earcup. earcup 2. Plug the other end of the cord into the audio device (see Connecting to portable and home audio devices on page 8). Turn on the audio device, making sure the volume is initially set to a low level. Turn on your headphones. The power switch indicator should light. Set the volume level using the volume control on the audio device.

3. 4. 5.

Headphones cord
Using your headphones only for noise reduction
When using the headphones just for noise reduction, you do not need to connect the headphones cord. Just turn on your headphones and put them on your head.

Power switch indicator

When the battery needs charging
When the power switch indicator starts flashing the battery is in a low-charge state. From the moment the indicator starts flashing, the battery has about four hours of life left. When replacing a battery, make sure you charge the new battery for a minimum of two hours. See Charging the battery on page 5. Before storing the battery for an extended period of time, fully charge the battery to maximize its life.
01.ENG_QC3.fm Page 8 Tuesday, March 31, 2009 4:34 PM
Connecting to portable and home audio devices
The 3.5 mm plug on the headphones cord allows you to connect your headphones to a variety of audio devices that use a 3.5 mm output jack: CD, DVD, or MP3/digital audio player Desktop or laptop personal computer
Connecting to airline audio systems

The audio output connections on airline audio systems vary, but they typically have dual or single 3.5 mm output jacks. Note: Airline audio may not equal the high-quality audio you experience from a home stereo or portable source.
Connecting to dual output jacks
Plug the headphone cord into the dualplug adapter and insert it into the dual output jacks. Dual 3.5 mm plugs

Headphones cord jack

Connecting to a single output jack
Pivot the movable plug so that it snaps in place against the adapter body. Plug the Single 3.5 headphone cord into the adapter and mm plug insert it into the single output jack. Headphones Movable The dual-plug adapter lowers the volume cord jack plug levels of strong audio output signals that are common on airline systems. If you find that the volume level is too low, remove the adapter and plug the headphone cord directly into the 3.5 mm output jack. WARNING: Use only the Bose airline adapter to connect headphone to
airplane seat jacks. DO NOT use adapters intended for mobile phones as this could result in personal injury such as burns or property damage due to overheating. Remove and disconnect immediately if you experience warming sensation or loss of audio.
01.ENG_QC3.fm Page 9 Tuesday, March 31, 2009 4:34 PM
Care and Maintenance Folding and storing

Care and Maintenance

QuietComfort 3 Acoustic Noise Cancelling headphones feature rotating earcups that fold flat for easy, convenient storage.
Right Left Espaol Franais CAUTION: The earcups rotate only in one direction. Incorrectly rotating the earcups can damage the headphones.

Using the carrying case

The carrying case provides safe storage for your headphones and its accessories. The foam tray holding the battery and charger is removable, allowing you to store other items, such as an MP3 player, in the case. Note: To maximize battery life, always charge the battery before storing it and never store the battery in the charger. Battery Dual-plug Charger adapter
Space for headphones cord

Headphones

01.ENG_QC3.fm Page 10 Tuesday, March 31, 2009 4:34 PM

Cleaning

Scheduled cleaning is not required. However, you can simply wipe the outside surface of the headphones with a dry cloth, as needed. Also, be sure that the earcup ports are clear and that no moisture is allowed into the earcups. Use only a dry cloth to clean the electrical contacts on the battery, in the charger, or in the battery compartment of the headphones. CAUTIONS: Be sure to unplug the battery charger before cleaning it. DO NOT use a moist cloth to clean the electrical contacts on the battery, in the charger, or in the battery compartment of the headphones.

Troubleshooting

If you experience any trouble using your headphones, try the instructions in the following table. If you still need help, call for technical assistance. In the United States only, call 1-800-905-2180. For other regions, see the contact information on the inside back cover. Problem What to do
No noise reduction Make sure the headphones power switch is on. Charge the battery. Low or no volume Make sure the audio source is on and the volume is turned up. Do not use the dual-plug adapter. Check the headphones cord connection at the source and the earcup. Charge the battery. Crackling noise; intermittent loss of Clean the contacts on the battery and in the battery noise reduction compartment. See Cleaning on page 10. Replace the battery. Low rumbling sound Charger indicator is flashing Adjust earcup fit on your ears. Make sure earcup ports are not blocked. Remove the battery, wait 10 seconds, and insert it again. Unplug the charger, wait 10 seconds, and plug it in again. Make sure the air temperature is within the acceptable range for charging, 32F (0C) to 95F (35C). Replace the battery. Replace the charger. Replace the battery. Replace the charger.
Short battery life after charging
01.ENG_QC3.fm Page 11 Wednesday, April 1, 2009 10:41 AM
Care and Maintenance Reattaching earcup cushions
If an earcup cushion becomes detached from the earcup: 1. Align the two holes on the back of the cushion with the two posts on the earcup. 2. 3. 4. Push the cushion onto the earcup. Press in around the outside edge of the cushion to snap it in place. Make sure the cushion is flush all the way around and that there are no gaps between the cushion and the earcup.

Accessories

You can purchase accessories from your Bose dealer, on the Internet (www.bose.com), or by placing an order over the phone. See the inside back cover for contact information. Battery QC 3 Mobile Communications Kit Battery charger Carrying case Replacement ear cushions Accessory kit (includes adapters and extension cable) 5 ft. (1.5 m) audio extension cable

Power ratings

Battery charger: 100VAC - 240VAC, 5.5W Battery: 3.7VDC, 200mAh

01.ENG_QC3.fm Page 1 Thursday, March 16, 2006 5:14 PM
Bose QuietComfort 3 Acoustic Noise Cancelling Headphones
Owners Guide Guia de usario Notice dutilitsation
01.ENG_QC3.fm Page 2 Thursday, March 16, 2006 4:49 PM

Safety Information

Please read this owners guide Please take the time to follow the instructions in this owners guide carefully. It will help you to properly use your new Bose product and enjoy its features. Please save this owners guide for future reference. WARNINGS
To reduce the risk of fire or electric shock, do not expose the battery charger to rain or moisture. Do not expose the charger to dripping or splashing of liquids. The battery charger must be used indoors. It is neither designed nor tested for use outdoors, in recreation vehicles, or on boats. Charge the battery only on a charger approved by Bose Corporation. Do not continue charging the battery if it does not reach full charge within the specified charging time. Doing so may cause the battery to become hot, rupture, or ignite. If you see any heat deformation or leakage, properly dispose of the battery. Do not expose the battery to temperatures greater than 212F (100C). If exposed to excessive heat, the battery can catch fire and explode. Do not place the battery in direct sunlight, or use or store it inside cars in hot weather where it can be exposed to temperatures in excess of 140F (60C). Doing so may cause the battery to generate heat, rupture, or ignite. Using the battery in this manner also may result in a loss of performance and a shortened life expectancy. Do not short circuit the battery. Avoid placing it around metal objects such as keys, pocket change, paper clips, and jewelry. Do not hit the battery with a hammer, step on, throw or drop it to expose it to a strong shock. Do not pierce the battery with a sharp object such as a nail. Do not crush, dent, or deform the battery in any way. If the battery becomes deformed, properly dispose of it. The battery used in this device may present a risk of fire or chemical burn if mistreated. Do not disassemble, heat above 212F (100C), or incinerate. Replace battery with Bose part PC40229 only. Use of another battery may present a risk of fire or explosion.

Franais

Espaol

English

CAUTIONS
Do not allow the battery to get wet. Avoid using it in high humidity environments. Avoid electrostatic discharge to the battery. Do not drop or sit on the headphones, or allow them to be immersed in water. Long-term exposure to loud music may cause hearing damage. It is best to avoid extreme volume when using these headphones, especially for extended periods. Do not use these headphones when operating a motor vehicle on a public road, or where the inability to hear outside sounds may present a danger to you or others. Sounds that you rely on as reminders or warnings may have an unfamiliar character when you are using the headphones. Be aware of how these sounds vary in character, so you can recognize them as needed.
Please dispose of used or damaged batteries promptly and properly, following any local regulations. Keep away from children. Do not incinerate. To return batteries for recycling, contact Bose or your Bose dealer. In the United States only, call 1-800-905-2180. For other regions, see the contact information on the inside back cover. This product conforms to the EMC Directive 89/336/EEC and to the Low Voltage Directive 73/23/EEC. The complete Declaration of Conformity can be found at www.bose.com/static/compliance/index.html.
2006 Bose Corporation. No part of this work may be reproduced, modified, distributed, or otherwise used without prior written permission.
01.ENG_QC3.fm Page 3 Thursday, March 16, 2006 4:49 PM
Important Safety Instructions
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
Read these instructions for all components before using this product. Keep these instructions for future reference. Heed all warnings on the product and in the owners guide. Follow all instructions. Do not use this product near water or moisture Do not use this product near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, near a swimming pool, or anywhere else that water or moisture are present. Clean only with a dry cloth and as directed by Bose Corporation. Unplug the battery charger from the wall outlet before cleaning. Do not block any ventilation openings. Install in accordance with the manufacturers instructions. Do not install near any heat sources, such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. Only use attachments/accessories specified by Bose. Unplug the battery charger during lightning storms or when unused for long periods of time to prevent damage to this product. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way: such as power-supply cord or plug is damaged; liquid has been spilled or objects have fallen into the apparatus; the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped Do not attempt to service this product yourself. Opening or removing covers may expose you to dangerous voltages or other hazards. Please call Bose to be referred to an authorized service center near you.

Espaol Franais

Compliance with FCC rules (U.S.A., only)
This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

NOTICE

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, this is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, you are encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment to an outlet on a different circuit than the one to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. Changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate this equipment. Proper connections must be used for connection to a host computer and/or peripherals in order to meet FCC emission limits.

FCC WARNING

01.ENG_QC3.fm Page 4 Thursday, March 16, 2006 4:49 PM

Welcome

Introducing the QuietComfort 3 Acoustic Noise Cancelling headphones
Thank you for purchasing the QuietComfort 3 Acoustic Noise Cancelling headphones from Bose. Our innovative technologies enable these on-ear headphones to reduce unwanted distractions while providing you with lifelike audio performance and a comfortable fit.
Adjustable headband Rotating earcups
L (left) mark Replaceable ear cushions
R (right) mark Power switch with power indicator Accessories included: in. (6.3 mm) stereo phone plug adapter Ports
Battery Headphones audio cord

Dual-plug adapter

Battery charger
5 ft. (1.5 m) audio extension cord Carrying case
IMPORTANT: Before initial headphone use, it is important to fully charge the battery for a minimum of two hours. See Charging the battery on page 5.
01.ENG_QC3.fm Page 5 Thursday, April 13, 2006 1:49 PM
Preparing Your Headphones Charging the battery
Preparing Your Headphones
Initial charging time for a new battery is approximately two hours. After that, charging time varies depending on the battery charge state. 1. Insert the battery into the charger. 2. 3. Swing the plug prongs out of the charger body. Plug the charger into a live AC (mains) outlet. 3 Indicator: On = Charging Off = Charging complete Flashing = See Troubleshooting on page 10.

IMPORTANT: DO NOT STORE A BATTERY IN THE CHARGER. After charging, unplug the battery charger and remove the battery. Storing a battery in the charger diminishes the charged state of the battery over time and may permanently reduce the capacity of the battery.
Battery handling and precautions
The battery does not have to be completely discharged in order to charge it. You can charge the battery at any time. Never leave the battery in a discharged state. Charge after use and before storage. Avoid extreme temperatures when charging the battery. Battery charging should occur within the temperature range of 32F (0C) to 95F (35C). A fully charged battery provides approximately 20 hours of use. Replace the battery when it no longer provides adequate power after charging. To order a replacement battery, see Troubleshooting on page 10. Keep the terminals on the battery, in the charger, and in the right earcup of the headphones clean at all times. Dirty terminals may cause poor electrical connections and affect performance. For cleaning instructions, see Cleaning on page 10.
01.ENG_QC3.fm Page 6 Thursday, March 16, 2006 4:49 PM

Installing the battery

Be sure to fully charge the battery before first use. See Charging the battery on page 5. 1. Make sure the headphones power switch is off. 2. Hold the headphones right earcup as shown. Insert the battery into the compartment. Be sure to push the battery all the way in until it is flush with the earcup. Battery Headband

Right earcup

Removing the battery for charging
Perform Step 1 and 2 and lift the battery straight up and out of the battery compartment.
01.ENG_QC3.fm Page 7 Thursday, March 16, 2006 4:49 PM
Using Your Headphones Wearing your headphones

Using Your Headphones

You can use your headphones only for noise reduction or for listening to audio along with the benefit of noise reduction. As you put on the headphones, observe the L (left) and R (right) markings that identify the left and right earcups. Adjust the headband so it rests gently on top of your head and the earcup cushions fit comfortably on your ears.
Using your headphones for audio with noise reduction
For listening to an audio source, you need to use the supplied headphones cord. 1. Plug the appropriate end of the headLeft phones cord into the left earcup. earcup 2. Plug the other end of the cord into the audio device (see Connecting to portable and home audio devices on page 8). Turn on the audio device, making sure the volume is initially set to a low level. Turn on your headphones. The power switch indicator should light. Set the volume level using the volume control on the audio device. Power switch indicator

3. 4. 5.

Headphones cord
Using your headphones only for noise reduction
When using the headphones just for noise reduction, you do not need to connect the headphones cord. Just turn on your headphones and put them on your head.
When the battery needs charging
When the power switch indicator starts flashing the battery is in a low-charge state. From the moment the indicator starts flashing, the battery has about four hours of life left. When replacing a battery, make sure you charge the new battery for a minimum of two hours. See Charging the battery on page 5. Before storing the battery for an extended period of time, fully charge the battery to maximize its life.
01.ENG_QC3.fm Page 8 Thursday, March 16, 2006 4:49 PM
Connecting to portable and home audio devices
The 3.5 mm plug on the headphones cord allows you to connect your headphones to a variety of audio devices that use a 3.5 mm output jack: CD, DVD, or MP3/digital audio player Desktop or laptop personal computer To connect to a home stereo system that has a -in. (6.3 mm) stereo output jack, use the -in. (6.3 mm) stereo adapter plug included with your headphones. Plug the headphone cord into the stereo plug adapter and insert it into the output jack on your stereo system.
Connecting to airline audio systems
The audio output connections on airline audio systems vary, but they typically have dual or single 3.5 mm output jacks. Note: Airline audio may not equal the high-quality audio you experience from a home stereo or portable source.
Connecting to dual output jacks
Plug the headphone cord into the dualplug adapter and insert it into the dual output jacks. Dual 3.5 mm plugs

Headphones cord jack

Connecting to a single output jack
Pivot the movable plug so that it snaps in place against the adapter body. Plug the headphone cord into the adapter and insert it into the single output jack. Single 3.5 mm plug
Headphones Movable The dual-plug adapter lowers the volume cord jack plug levels of strong audio output signals that are common on airline systems. If you find that the volume level is too low, remove the adapter and plug the headphone cord directly into the 3.5 mm output jack.

01.ENG_QC3.fm Page 9 Tuesday, April 18, 2006 8:21 AM
Care and Maintenance Folding and storing

Care and Maintenance

QuietComfort 3 Acoustic Noise Cancelling headphones feature rotating earcups that fold flat for easy, convenient storage.
Right Left Espaol Franais CAUTION: The earcups rotate only in one direction. Incorrectly rotating the earcups can damage the headphones.

Using the carrying case

The carrying case provides safe storage for your headphones and its accessories. The foam tray holding the battery and charger is removable, allowing you to store other items, such as an MP3 player, in the case. Note: To maximize battery life, always charge the battery before storing it and never store the battery in the charger. Battery Dual-plug Charger adapter
Space for headphones cord and other accessories

Headphones

01.ENG_QC3.fm Page 10 Thursday, March 16, 2006 4:49 PM

Cleaning

Scheduled cleaning is not required. However, you can simply wipe the outside surface of the headphones with a dry cloth, as needed. Also, be sure that the earcup ports are clear and that no moisture is allowed into the earcups. Use only a dry cloth to clean the electrical contacts on the battery, in the charger, or in the battery compartment of the headphones. CAUTIONS: Be sure to unplug the battery charger before cleaning it. DO NOT use a moist cloth to clean the electrical contacts on the battery, in the charger, or in the battery compartment of the headphones.

Troubleshooting

If you experience any trouble using your headphones, try the instructions in the following table. If you still need help, call for technical assistance. In the United States only, call 1-800-905-2180. For other regions, see the contact information on the inside back cover. Problem What to do
No noise reduction Make sure the headphones power switch is on. Charge the battery. Low or no volume Make sure the audio source is on and the volume is turned up. Do not use the dual-plug adapter. Check the headphones cord connection at the source and the earcup. Crackling noise; Charge the battery. intermittent loss of Clean the contacts on the battery and in the battery noise reduction compartment. See Cleaning on page 10. Replace the battery. Low rumbling sound Charger indicator is flashing Adjust earcup fit on your ears. Make sure earcup ports are not blocked. Remove the battery, wait 10 seconds, and insert it again. Unplug the charger, wait 10 seconds, and plug it in again. Make sure the air temperature is within the acceptable range for charging, 32F (0C) to 95F (35C). Replace the battery. Replace the charger. Replace the battery. Replace the charger.