DiamondClean Smart 9300

Philips Sonicare DiamondClean Smart 9300

The Philips Sonicare DiamondClean Smart 9300 is a rechargeable electric toothbrush designed to remove plaque and food debris from teeth while supporting daily gum care and oral hygiene. It combines sonic brushing technology with smart sensors, adjustable brushing intensity, and Bluetooth connectivity.

The toothbrush includes BrushSync technology, which allows compatible smart brush heads to communicate with the handle. It can automatically select a recommended brushing mode and intensity, monitor brush head wear, and remind users when replacement is needed.

The DiamondClean Smart toothbrush family supports brushing modes for everyday cleaning, surface stain removal, gum care, and deeper cleaning. Available modes and accessories depend on the specific model configuration.

Product Overview and Features

The DiamondClean Smart uses Sonicare brushing technology to clean teeth and along the gumline.

The toothbrush also incorporates smart sensors that record brushing information and communicate with the Sonicare mobile app.

Main Features

Parts and Components

The Philips Sonicare DiamondClean Smart includes a rechargeable handle, control buttons, indicator lights, and removable accessories.

Toothbrush Components

Charging and Travel Accessories

The supplied accessories depend on the purchased DiamondClean Smart configuration.

Control Buttons and Indicator Lights

The DiamondClean Smart has dedicated controls for power, brushing modes, and intensity.

Button Functions

Mode and Intensity Button

The Mode/Intensity button has two different functions.

When the toothbrush is switched off: Press the button to select a brushing mode.

While the toothbrush is operating: Press the button to adjust brushing intensity.

The intensity cannot be changed while the handle is switched off or paused.

Technical Specifications

Approved Charging Equipment

The manufacturer specifies the following charger families:

Use the charger supplied with the product and approved original Philips charging accessories.

Important Safety Instructions

The DiamondClean Smart is an electrical personal care appliance containing a rechargeable lithium-ion battery.

It should only be used for cleaning teeth, gums, and tongue.

Electrical Safety

• Read all operating instructions before using the toothbrush.
• Keep chargers away from water.
• Make sure USB chargers and charging travel cases are completely dry before connecting them to power.
• Do not use charging equipment outdoors.
• Keep chargers away from heated surfaces.
• Use only original Philips accessories and consumables.
• Use the charger supplied with the product.
• Stop using the toothbrush if the handle or charging equipment is damaged.
• Replace a charger if its cable is damaged.
• Do not attempt to repair or disassemble the toothbrush.

Warning: The appliance has no user-serviceable parts. If it becomes damaged, stop using it and contact Philips Consumer Care.

Battery Safety

• Keep the toothbrush and battery away from fire.
• Do not expose the product to direct sunlight or high temperatures.
• Do not place the toothbrush or battery in a microwave oven or on an induction cooker.
• Do not open, modify, puncture, damage, or disassemble the battery.
• Do not short-circuit, overcharge, or reverse-charge the battery.
• Stop using and charging the product if it becomes unusually hot, produces an unusual smell, changes color, or takes longer than normal to charge.
• Contact Philips if an abnormal battery condition occurs.

The built-in rechargeable battery is not user-replaceable.

If a battery is damaged or leaking, avoid contact with the skin and eyes. If contact occurs, rinse immediately with water and seek medical care.

Oral Health and Medical Precautions

Stop using the toothbrush and consult a dentist or doctor if:

• Excessive bleeding occurs after brushing.
• Bleeding continues after one week of use.
• Brushing causes discomfort or pain.

Additional precautions include:

• Consult a dentist before using the toothbrush if oral or gum surgery was performed within the previous two months.
• Consult a doctor or the implanted device manufacturer before use if a pacemaker or another implanted medical device is present.
• Consult a physician if there are medical concerns.

The toothbrush is intended for personal use and must not be shared among multiple patients in dental practices or institutions.

Brush Head Safety

• Replace the brush head every three months or sooner if it shows signs of wear.
• Stop using brush heads with crushed or bent bristles.
• Avoid direct contact between brush heads and products containing essential oils or coconut oil.
• Use genuine Philips Sonicare replacement brush heads.

Essential oils and coconut oil can cause brush head bristles to become dislodged.

Safety for Children

Children younger than eight years should use the toothbrush with adult supervision.

Children and people with reduced physical, sensory, or mental capabilities may use the appliance if they have received appropriate supervision or instructions and understand the associated risks.

Children must not clean or maintain the toothbrush without supervision.

Cleaning Safety

Do not put the toothbrush, brush head, charger, or any accessory in a dishwasher.

Disconnect charging equipment from the electrical supply before cleaning it.

Before First Use

The toothbrush must be assembled and charged before normal use.

How to Attach the Brush Head

1. Remove the toothbrush handle and brush head from the packaging.
2. Align the brush head so its bristles point in the same direction as the front of the handle.
3. Place the brush head over the metal shaft.
4. Push the brush head firmly downward until it cannot move any farther.

A small visible gap between the brush head and handle is normal.

Initial Charging

1. Connect the charging base to an electrical outlet.
2. Place the charging stand or charging glass on the charging base.
3. Place the toothbrush handle on the charging stand or inside the charging glass.
4. Check the charging confirmation.

When charging begins:

• The battery indicator illuminates white.
• The light ring illuminates white.
• The handle produces two beeps.
• The battery indicator flashes white while charging.

A full initial charge may take up to 24 hours.

The toothbrush can be used before the battery is fully charged.

Adjusting to Sonicare Brushing

First-time Sonicare users may notice stronger vibration than when using a manual toothbrush.

For the first one to two weeks, use a lower intensity setting.

The intensity can be increased after becoming familiar with the brushing sensation.

How to Use the Philips Sonicare DiamondClean Smart 9300

The toothbrush uses a sonic brushing action and timed brushing programs to clean teeth and gums.

Gentle pressure should be applied while moving the brush head slowly across the teeth.

Step-by-Step Brushing Instructions

1. Wet the brush head bristles.
2. Apply a small amount of toothpaste.
3. Position the bristles against the teeth at approximately a 45-degree angle.
4. Apply enough gentle pressure for the bristles to reach the gumline or slightly beneath it.
5. Keep the center of the brush head in contact with the teeth.
6. Press the Power On/Off button.
7. Move the brush head slowly with small back-and-forth movements.
8. Allow the bristles to reach between the teeth.
9. Continue brushing until the BrushPacer signals the next section.
10. Move the brush head to the next area.
11. For the inner surfaces of the front teeth, tilt the handle into a semi-upright position.
12. Make several overlapping vertical strokes on each front tooth.
13. Continue brushing until the selected cycle finishes.
14. Allow the toothbrush to switch off automatically.

The bristles should spread slightly during brushing.

Important: Do not scrub the teeth as forcefully as with a manual toothbrush.

The toothbrush provides pressure feedback if excessive force is applied.

Brushing Additional Areas

After completing the regular brushing cycle, additional time may be spent cleaning:

• Chewing surfaces.
• Areas where staining occurs.
• The tongue.

The tongue may be brushed with the toothbrush switched on or off.

Using the Toothbrush with Braces

The toothbrush can be used with orthodontic braces.

Brush heads may wear out sooner when used with braces.

Using the Toothbrush with Dental Restorations

The toothbrush can also be used with dental restorations such as:

• Fillings.
• Crowns.
• Veneers.

The restorations must be properly attached and in good condition.

Brushing Modes and Settings

The DiamondClean Smart product family supports up to five brushing modes.

Mode availability varies by configuration.

Brushing Mode Comparison

Tongue Care is available only on specific configurations.

Clean Mode

Clean mode is intended for regular plaque removal.

The brushing cycle lasts two minutes.

BrushPacer divides the cycle into six sections of 20 seconds each.

White+ Mode

White+ combines plaque removal with additional brushing time for surface stains.

The program lasts two minutes and 40 seconds.

1. Brush the six main mouth sections for 20 seconds each.
2. Continue with the two additional sections.
3. Brush each additional section for 20 seconds.

Gum Health Mode

Gum Health combines plaque removal with gum massage.

The complete cycle lasts three minutes and 20 seconds.

1. Brush the six main mouth sections for 20 seconds each.
2. Continue with four additional sections.
3. Spend 20 seconds on each additional section.

Deep Clean+ Mode

Deep Clean+ provides a longer brushing session when the toothbrush is used without an app connection.

Without the Sonicare app connection:

• Total duration: 3 minutes.
• Six brushing sections.
• Each section lasts 30 seconds.

When connected to the Sonicare app:

• Total duration: 2 minutes.

Tongue Care Mode

Available on specific models.

Tongue Care uses a 20-second cleaning cycle.

1. Wet the microbristles of the tongue-cleaning brush head.
2. Brush the tongue using a gentle back-and-forth movement.
3. Clean as far back as comfortable.
4. Rinse the mouth.
5. Repeat the process two more times.

How to Change Brushing Modes

1. Make sure the toothbrush is switched off.
2. Press the Mode/Intensity button.
3. Continue pressing to move through the available modes.
4. Stop when the preferred mode is selected.
5. Press Power On/Off to begin brushing.

The selected mode is shown by the corresponding mode indicator.

Adjusting Brushing Intensity

The toothbrush provides three intensity levels.

Compatible BrushSync smart brush heads can automatically select the recommended intensity.

How to Change Intensity

1. Switch on the toothbrush.
2. Press the Mode/Intensity button while brushing.
3. Continue pressing until the required intensity is selected.
4. Check the number of illuminated intensity bars.

Important: Intensity can only be changed while the toothbrush is operating. It cannot be adjusted when the handle is switched off or paused.

BrushPacer Brushing Timer

BrushPacer divides the brushing cycle into six sections to help distribute brushing time across the mouth.

How BrushPacer Works

1. Begin brushing the first section.
2. Continue until a short pause in vibration occurs.
3. Move to the next section.
4. Repeat the process until all six sections have been brushed.

For a two-minute Clean cycle, each section receives 20 seconds.

Additional sections are included in White+ and Gum Health modes.

The toothbrush automatically stops when the selected brushing cycle finishes.

SmarTimer Function

SmarTimer automatically switches off the toothbrush at the end of the selected brushing program.

Dental professionals recommend brushing for at least two minutes twice daily.

How to Pause Brushing

1. Press Power On/Off during a brushing cycle.
2. The toothbrush pauses.
3. Press Power On/Off again to continue.

If the pause lasts 30 seconds, SmarTimer resets.

The next brushing session starts with a new timer cycle.

Pressure Sensor Feedback

The DiamondClean Smart includes a pressure sensor that detects excessive force during brushing.

Pressure Sensor Feedback is enabled by default.

What Happens When Too Much Pressure Is Applied?

When the toothbrush detects excessive pressure:

1. The handle changes its vibration.
2. The brushing feedback light at the bottom of the handle flashes purple.
3. The warning continues until the pressure is reduced.

What Does the Purple Flashing Light Mean?

A flashing purple brushing feedback light means excessive pressure is being applied.

Reduce the pressure on the teeth and gums.

The light stops flashing when brushing pressure returns to an appropriate level.

BrushSync Technology

BrushSync allows compatible smart brush heads to communicate with the toothbrush handle using an integrated microchip.

The BrushSync symbol is located near the bottom of a compatible brush head.

BrushSync Functions

BrushSync provides two functions:

• Automatic brush head mode pairing.
• Brush head replacement reminders.

Automatic Brush Head Mode Pairing

A compatible smart brush head can select a recommended brushing mode and intensity automatically.

Most BrushSync brush heads automatically pair with Clean mode.

Certain brush heads select a different mode when it is available.

If the brushing mode or intensity is manually changed, the smart brush head remembers the selected setting for future brushing sessions.

Brush Head Replacement Reminder

BrushSync tracks brush head wear using:

• Brushing pressure.
• Total time the brush head has been used.

When a new compatible smart brush head is installed, the toothbrush recognizes it and begins monitoring usage.

When replacement is needed, the brush head replacement indicator illuminates amber.

The replacement reminder is enabled by default.

The reminder works only with compatible Philips Sonicare smart brush heads.

EasyStart Function

EasyStart gradually increases brushing power during the first 14 brushing sessions.

The function is intended to help new users become familiar with the Sonicare brushing sensation.

EasyStart works with all available brushing modes.

It is disabled by default.

How to Activate EasyStart

1. Place the toothbrush handle on the charging stand or inside the charging glass.
2. Press and hold the Mode/Intensity button.
3. While holding Mode/Intensity, press the Power On/Off button once.
4. Release the Mode/Intensity button.
5. Check the confirmation signals.

EasyStart Confirmation

Repeat the procedure to change the setting again.

Activating or Deactivating Smart Features

The toothbrush allows three functions to be changed directly from the handle:

• EasyStart.
• Pressure Sensor Feedback.
• Brush Head Replacement Reminder.

How to Change a Feature

1. Place the handle on the charging stand or inside the charging glass.
2. Press and hold the Mode/Intensity button.
3. While holding it, press Power On/Off the required number of times.
4. Release the Mode/Intensity button.
5. Check the confirmation light and beep.

Feature Control Table

Confirmation Signals

Important: The Brush Head Replacement Reminder can only be activated or deactivated when a compatible smart brush head is attached.

Connecting to the Sonicare App

The Sonicare app allows the toothbrush to connect to a compatible smartphone through Bluetooth.

It tracks brushing habits and provides personalized tips.

Sonicare App Features

The app provides information about:

• Daily brushing sessions.
• Time spent brushing.
• Brushing pressure.
• Brush head replacement needs.
• Personalized oral care recommendations.
• Brushing progress over time.

How to Pair the Toothbrush with the Sonicare App

1. Download the Sonicare app to a compatible smartphone.
2. Turn on Bluetooth on the phone.
3. Pick up the toothbrush so its indicator lights become active.
4. Open the Sonicare app.
5. Follow the guided setup instructions.
6. Pair the toothbrush with the app.
7. Create a Sonicare app account.
8. Complete a firmware update if prompted.
9. Keep the smartphone near the toothbrush during data transfer.

The app supports a range of iPhone and Android smartphones.

Manual Synchronization

For manual synchronization:

1. Enable Bluetooth on the smartphone.
2. Open the Sonicare app.
3. Connect the toothbrush.
4. Keep the phone close to the handle until the brushing information updates.

Philips recommends manually connecting and synchronizing approximately every two weeks.

Automatic Synchronization

Automatic synchronization uses location permission during app setup to recognize when the smartphone is within Bluetooth connection range.

When location permission is enabled, the app can refresh brushing information when the phone is within range.

The Sonicare Privacy Statement is available during the app setup process.

Charging the Philips Sonicare DiamondClean Smart

The DiamondClean Smart can be charged using the charging glass or charging stand on the powered charging base.

Compatible configurations also support charging through a USB charging travel case.

A complete charge may take up to 24 hours.

Charging with the Charging Glass or Stand

1. Connect the charging base cord to an electrical outlet.
2. Place the charging glass or charging stand on the charging base.
3. Position the toothbrush handle inside the glass or on the stand.
4. Check the charging indicators.

When charging begins:

• The battery indicator illuminates white.
• The light ring illuminates white.
• The handle produces two beeps.

The battery indicator flashes white while charging.

When fully charged, the battery indicator illuminates white for 30 seconds and then switches off.

Charging with the Travel Case

Available with supported configurations.

1. Remove the integrated USB cable from the bottom of the charging travel case.
2. Connect the USB cable to a compatible 5 V DC power source.
3. Place the toothbrush handle inside the travel case.
4. Leave the case connected until charging finishes.

The charging travel case can be powered using:

• The supplied USB adapter.
• A certified computer USB connection.
• A compatible certified USB power supply.

The case charges the toothbrush until the battery is fully charged.

Battery Life and Charging Status

The DiamondClean Smart is designed to provide at least 28 two-minute brushing sessions on a fully charged battery.

This corresponds to approximately 14 days when brushing twice daily.

Battery Status While Charging

Battery Status When Not Charging

The battery indicator switches off when the toothbrush is not in use to conserve power.

What Happens When the Battery Is Empty?

When the battery becomes completely empty, the toothbrush switches off.

Place it on the charger to recharge it.

The toothbrush may remain on the charger when not in use to keep the battery charged.

Cleaning Instructions

Regular cleaning removes toothpaste residue and helps maintain the brush head, handle, and charging accessories.

Important: Do not clean any toothbrush component or accessory in a dishwasher.

Cleaning the Toothbrush Handle

1. Remove the brush head.
2. Rinse the metal shaft area using warm water.
3. Remove accumulated toothpaste residue.
4. Wipe the entire handle using a damp cloth.
5. Allow the cleaned surfaces to dry.

Clean the metal shaft area at least once per week, preferably after every use.

Do not press against the rubber seal with sharp objects.

Do not tap the handle against a sink to remove excess water.

Cleaning the Brush Head

1. Rinse the brush head and bristles after every use.
2. Remove the brush head from the handle at least once per week.
3. Rinse the brush head connection with warm water.
4. Allow the brush head to air-dry.

Rinse the travel cap when needed and allow it to air-dry.

Use the cap only on a dry brush head.

Cleaning the Brush Head Holder

1. Rinse the holder with warm water.
2. Wipe its cover and base using a damp cloth.
3. Allow the holder to air-dry.

Cleaning the Charger

1. Unplug the charger.
2. Wipe its surface using a damp cloth.
3. Make sure the charger is completely dry before reconnecting it.

Cleaning the Travel Case

1. Rinse the travel case with warm water.
2. Wipe the inside using a damp cloth.
3. Allow it to air-dry.

Cleaning the Charging Travel Case

1. Disconnect the charging travel case from power.
2. Wipe its surface using a damp cloth.
3. Allow it to air-dry before reconnecting it.

Maintenance Instructions

Regular maintenance includes cleaning toothpaste deposits, replacing worn brush heads, checking battery status, and keeping charging accessories clean.

Maintenance Schedule

Replacing the Brush Head

1. Remove the existing brush head from the handle.
2. Align the replacement brush head with the metal shaft.
3. Push the brush head firmly downward.
4. Make sure it is seated correctly.

A compatible BrushSync smart brush head is recognized by the toothbrush when first attached.

The replacement reminder then begins tracking the new brush head’s wear.

Storage Instructions

If the toothbrush will not be used for an extended period:

1. Disconnect the charging equipment from the electrical outlet.
2. Clean the toothbrush and accessories.
3. Allow the cleaned parts to dry.
4. Store the toothbrush in a cool, dry place.
5. Keep it away from direct sunlight.

The specified storage and transportation temperature range is −10°C to 60°C (14°F to 140°F).

Indicator Lights and Troubleshooting

The toothbrush uses colored lights, vibration changes, and beep signals to communicate operating and maintenance conditions.

Indicator Light Guide

Why Is the DiamondClean Smart Flashing Purple?

The purple feedback light indicates excessive brushing pressure.

The handle also changes its vibration.

Reduce the force applied during brushing until the warning stops.

Why Is the Brush Head Replacement Light Amber?

An amber brush head replacement indicator means BrushSync has determined that the smart brush head should be replaced.

Remove the worn brush head and install a genuine Philips Sonicare replacement.

Why Is the Battery Light Flashing Amber?

A flashing amber battery light indicates low or empty battery status.

Three beeps after brushing indicate a low battery.

Two sets of five beeps indicate an empty battery.

Recharge the toothbrush using the approved charging equipment.

Why Does the Toothbrush Stop Automatically?

SmarTimer automatically switches off the toothbrush when the selected brushing program finishes.

The cycle duration depends on the selected mode.

If the Power On/Off button is pressed during brushing, the toothbrush pauses.

A pause of 30 seconds resets SmarTimer.

Why Is the Toothbrush Vibration Stronger Than Expected?

New Sonicare users may notice stronger vibration compared with a manual toothbrush.

Use a lower intensity setting for the first one to two weeks, then move to a higher setting when comfortable.

Why Is the BrushSync Reminder Not Working?

The brush head replacement reminder requires a compatible Philips Sonicare smart brush head.

Make sure the brush head has the BrushSync symbol and that the reminder feature is activated.

Why Is the Sonicare App Not Updating Brushing Data?

The smartphone must have Bluetooth enabled for the toothbrush to transfer data.

1. Enable Bluetooth.
2. Pick up the toothbrush to activate its indicator lights.
3. Open the Sonicare app.
4. Connect the toothbrush.
5. Keep the phone within connection range.

Manually synchronize approximately every two weeks when automatic synchronization is not used.

Replacement Brush Heads and Accessories

The Philips DiamondClean Smart supports Philips Sonicare smart brush heads with BrushSync technology.

Compatible heads are identified by the BrushSync symbol.

Brush Head Compatibility

Replacement Instructions

Replace brush heads:

• Every three months.
• Earlier if the bristles become bent or crushed.
• When the BrushSync replacement indicator illuminates amber.

Use genuine Philips Sonicare replacement brush heads.

Official brush head information:

https://www.philips.com/toothbrush-heads

Warranty Information

Two-Year Limited Warranty

Philips provides a two-year warranty from the date of purchase.

Defects caused by faulty materials or workmanship may be repaired or replaced by Philips during the warranty period when acceptable proof of purchase is provided.

Warranty Exclusions

The warranty does not cover:

• In-mouth attachments, including brush heads and nozzles.
• Damage caused by unauthorized replacement parts or brush heads.
• Damage caused by misuse, abuse, or neglect.
• Unauthorized modifications or repairs.
• Normal wear and tear, including chips, scratches, abrasions, discoloration, and fading.

Using non-genuine brush heads may damage the toothbrush and limit warranty protection.

Warranty Limitations

The warranty limits the duration of certain implied warranties to the express warranty period where permitted by law.

Special, incidental, and consequential damages are excluded where permitted by applicable law.

Warranty rights and limitations may vary by jurisdiction.

Customer Support Information

Philips provides product registration, warranty assistance, replacement brush head information, and technical support.

Manufacturer Information

Philips Oral Healthcare, LLC

22100 Bothell Everett Highway
Bothell, WA 98021
United States

Canada Importer

Philips Electronics Ltd.

1875 Buckhorn Gate, 5th Floor
Mississauga, Ontario L4W 5P1
Canada

For support, use the exact HX model number printed on the bottom of the toothbrush handle.

Battery Disposal and Recycling

The toothbrush contains a built-in rechargeable lithium-ion battery.

The battery must be recycled or disposed of according to local regulations.

Do not discard electrical products or rechargeable batteries with ordinary household waste.

Battery Removal

The built-in battery must only be removed by a qualified professional when the appliance is being discarded.

Before removal, the battery must be completely discharged.

Battery removal involves opening the handle and disconnecting internal components. It is not a routine user-maintenance procedure.

The qualified person performing the removal must protect their eyes, hands, and working surface, and must prevent the battery terminals from contacting metal objects.

Battery terminals should be covered with tape or the battery placed in a plastic bag before disposal.

Battery Recycling Support

For battery recycling locations:

• Telephone: 1-800-822-8837
• Website: https://www.call2recycle.org

For general recycling information:

Frequently Asked Questions

How do I use the Philips Sonicare DiamondClean Smart 9300?

Attach the brush head, wet the bristles, and apply toothpaste. Place the bristles at approximately a 45-degree angle against the teeth and gumline. Press Power On/Off and move the brush head gently across the teeth. Follow the BrushPacer signals until the selected brushing cycle finishes.

How do I change the brushing mode on the DiamondClean Smart 9300?

Switch off the toothbrush and press the Mode/Intensity button to move through the available brushing modes. When the required mode is selected, press Power On/Off to begin brushing.

How do I change the intensity on the Philips DiamondClean 9300?

Switch on the toothbrush and press the Mode/Intensity button while brushing. One illuminated bar indicates Low, two indicate Medium, and three indicate High. Intensity cannot be changed while the toothbrush is switched off or paused.

What does the purple light mean on the Philips Sonicare DiamondClean Smart?

A flashing purple brushing feedback light indicates excessive pressure. The toothbrush also changes its vibration. Reduce the pressure applied to the teeth and gums until the warning stops.

How long does the Philips Sonicare DiamondClean Smart 9300 take to charge?

A complete charge may take up to 24 hours. The battery indicator flashes white while charging. When fully charged, it stays white for 30 seconds and then switches off.

How long does the Philips DiamondClean Smart 9300 battery last?

The toothbrush is designed to provide at least 28 two-minute brushing sessions on a full charge. This is approximately 14 days when brushing twice daily.

How do I connect the DiamondClean Smart 9300 to my phone?

Download the Sonicare app, turn on Bluetooth, and pick up the toothbrush to activate its lights. Open the app, follow the pairing instructions, and create an account. Keep the phone close to the toothbrush for data transfer and synchronize regularly.

How do I activate EasyStart or turn off the pressure sensor?

Place the toothbrush on the charger and hold the Mode/Intensity button. Press Power On/Off once for EasyStart or twice for Pressure Sensor Feedback, then release Mode/Intensity. Two white flashes with two beeps indicate activation; one amber flash with one beep indicates deactivation.