Introduction
The Philips Sonicare DiamondClean Smart 9750 is an advanced rechargeable electric power toothbrush designed to provide comprehensive oral care. This manual offers detailed instructions for setup, operation, maintenance, and troubleshooting to ensure optimal performance and a superior brushing experience.

Image: The Philips Sonicare DiamondClean Smart 9750 system, including the toothbrush handle, charging glass, USB travel case, and various brush heads.
Important Safety Information
Please read all safety information before using the Philips Sonicare DiamondClean Smart 9750 toothbrush.
- Keep out of reach of children.
- Avoid contact with skin and eyes.
- If ingested, seek medical help immediately.
- This appliance operates on 110-240 volts.
Getting Started (Setup)
Follow these steps to set up your new Philips Sonicare DiamondClean Smart 9750 toothbrush.
- Unpack Components: Carefully remove all items from the packaging, including the toothbrush handle, brush heads, charging glass, and USB travel case.
- Initial Charging: Place the toothbrush handle into the charging glass or connect the travel case to a USB power source. Allow the toothbrush to charge for at least 24 hours before first use to ensure a full battery. The battery indicator will show charging progress.
- Attaching a Brush Head: Align the brush head with the metal shaft on the toothbrush handle and push it down firmly until it clicks into place.

Image: The Philips Sonicare DiamondClean Smart 9750 toothbrush being charged inside its travel case using a USB connection, highlighting its portability.
Operating Instructions
Learn how to use your DiamondClean Smart 9750 toothbrush for an effective cleaning experience.
Brushing Modes and Intensity Settings
The toothbrush features 5 brushing modes and 3 intensity settings to customize your brushing experience:
- Clean: For exceptional everyday clean.
- White+: To remove surface stains.
- Gum Health: For gentle yet effective cleaning along the gumline.
- Deep Clean+: For an invigorating deep clean.
- Tongue Care: For cleaning your tongue.
Press the mode button to cycle through the available modes. Use the intensity button to select your preferred intensity level (low, medium, high).

Image: A close-up of the Philips Sonicare DiamondClean Smart 9750 toothbrush handle, illustrating the five distinct brushing modes and three intensity settings for personalized oral care.
Smart Features and App Integration
The DiamondClean Smart 9750 connects to the Philips Sonicare app for real-time feedback and personalized coaching.
- Pressure Sensor: An integrated pressure sensor alerts you with a visual light and vibration if you are brushing too hard, helping to protect your gums and teeth.
- BrushSync Technology: The toothbrush automatically detects the type of brush head attached and pairs it with the optimal brushing mode and intensity.
- Real-time Feedback (App): The Sonicare app provides a 3D map of your mouth, showing areas you've brushed, areas you've missed, and guiding you to improve your technique. It tracks coverage, pressure, and scrubbing.

Image: A visual representation of the pressure sensor feature, indicating how the toothbrush alerts the user when excessive pressure is applied during brushing.

Image: A user's hand holding a smartphone showing the Philips Sonicare app, which provides real-time feedback on brushing technique and coverage.
Video: An official product video demonstrating the features and benefits of the Philips Sonicare DiamondClean Smart 9750 toothbrush, including its smart capabilities and cleaning performance.
Maintenance and Care
Proper maintenance ensures the longevity and effectiveness of your toothbrush.
Cleaning
- After each use, rinse the brush head and bristles thoroughly under running water.
- Wipe the toothbrush handle with a damp cloth. Do not submerge the handle in water.
- Clean the charging glass and travel case as needed with a damp cloth.
Brush Head Replacement
Dentists recommend replacing your brush head every 3 months. The BrushSync feature will provide a customized reminder when it's time to replace your brush head.

Image: A visual depiction of the BrushSync replacement reminder, indicating when a new brush head is needed for optimal performance.

Image: An array of Philips Sonicare click-on brush heads, illustrating their compatibility with the toothbrush handle and the recommendation for 3-month replacement.
Troubleshooting
If you encounter issues with your Philips Sonicare DiamondClean Smart 9750, refer to the following common problems and solutions.
- Toothbrush Not Charging: Ensure the charging glass or travel case is properly connected to a power source. Verify that the toothbrush handle is correctly seated in the charger.
- Reduced Vibration or Unusual Noise: This could indicate moisture infiltration, seal deterioration, or a loose internal component. Ensure the brush head is securely attached. If the issue persists, contact customer support.
- Battery Life Issues: If the battery drains quickly, ensure it is fully charged for the recommended duration. Extreme temperatures can affect battery performance. Persistent issues may indicate a battery fault.
- App Connectivity Problems: Ensure Bluetooth is enabled on your device and the toothbrush is within range. Restart both the toothbrush and your device if connection issues persist.
For more detailed troubleshooting, please refer to the official Troubleshooting Guide (PDF).
Specifications
| Product Dimensions | 4.72 x 10.23 x 9.29 inches; 3.45 Pounds |
| Item Model Number | HX9954/56 |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Date First Available | April 2, 2018 |
| Manufacturer | Philips Oral Healthcare |
| Brand | Philips Sonicare |
| Age Range (Description) | Adult |
| Special Feature | Pressure Sensor |
| Power Source | Corded Electric |
| Item Firmness Description | Soft |
Warranty and Support
Philips Sonicare products are designed for durability and performance. Many users report excellent longevity and positive experiences with warranty claims, indicating strong manufacturer support.
For detailed warranty information, product registration, or to contact customer support, please refer to the official Philips Sonicare website or the documents provided with your product:





