1. Safety Information
Read this user manual carefully before you use the appliance and save it for future reference. Always check that the appliance is in good condition before use. Do not use the appliance if it is damaged.
- This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
- Children should be supervised to ensure that they do not play with the appliance.
- Do not immerse the appliance in water. The appliance is water-resistant and can be rinsed under the tap, but it is not suitable for use in the bath or shower.
- Always unplug the appliance before cleaning it.
- Do not use the appliance if the adapter or charging cable is damaged.
- For charging, use only the detachable supply unit provided with the appliance.
2. Product Overview
The Philips All-in-One Series 3000 Trimmer MG3920/15 is a versatile grooming tool designed for various trimming needs. It features self-sharpening steel blades for precision and rounded tips for comfort.
Package Contents:
- Trimmer handle
- Precision trimmer head
- Nose and ear trimmer head
- 3 beard combs (1mm, 3mm, 5mm)
- 3 hair combs (9mm, 12mm, 16mm)
- Cleaning brush
- USB charging cable

3. Setup
3.1 Initial Charging
- Ensure the trimmer is switched off.
- Connect the USB charging cable to the trimmer's charging port.
- Plug the other end of the USB cable into a compatible USB power adapter (not supplied) or a USB port.
- The charging indicator light on the trimmer will illuminate to show it is charging. A full charge typically takes approximately 8 hours and provides up to 60 minutes of cordless use.
3.2 Attaching and Detaching Trimming Heads/Combs
- To attach a trimming head (e.g., precision trimmer or nose/ear trimmer), align the head with the trimmer body and press it down until it clicks into place.
- To attach a comb, slide it onto the desired trimming head until it securely locks.
- To detach a trimming head, pull it upwards firmly.
- To detach a comb, gently pull it off the trimming head.
4. Operating the Trimmer
4.1 Power On/Off
Press the power button once to turn the trimmer on. Press it again to turn the trimmer off.
4.2 Trimming Your Beard
- Attach the precision trimmer head.
- Select one of the beard combs (1mm, 3mm, or 5mm) for your desired length and attach it.
- Turn on the trimmer.
- Move the trimmer against the direction of hair growth, ensuring the comb stays flat against your skin.
- For detailing or creating sharp lines, remove the comb and use the precision trimmer head directly on the skin.

4.3 Trimming Your Hair
- Attach the precision trimmer head.
- Select one of the hair combs (9mm, 12mm, or 16mm) for your desired length and attach it.
- Turn on the trimmer.
- Move the trimmer slowly over your head, ensuring the comb maintains contact with your scalp.
- For an even cut, pass the trimmer over the same area multiple times from different directions.

4.4 Trimming Nose and Ear Hair
- Attach the nose and ear trimmer head.
- Turn on the trimmer.
- Carefully insert the trimmer into your nostril or ear canal.
- Move the trimmer gently to remove unwanted hair. Do not insert the trimmer too deeply.
5. Maintenance
5.1 Cleaning
- After each use, turn off the trimmer and detach the trimming head and comb.
- Rinse the trimming head and comb under warm running water.
- Use the provided cleaning brush to remove any remaining hair from the trimmer blades and inside the head.
- Wipe the trimmer body with a damp cloth. Do not immerse the body in water.
- Allow all parts to air dry completely before reassembling or storing.
5.2 Storage
Store the trimmer and its accessories in a dry, safe place, away from direct sunlight and extreme temperatures. Keep out of reach of children.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Trimmer does not turn on. | Battery is depleted. | Charge the trimmer for at least 8 hours. |
| Trimmer performance is poor. | Hair buildup in the trimming head. | Clean the trimming head and blades thoroughly. |
| Trimmer pulls hair. | Blades are dull or dirty. | Ensure blades are clean. If problem persists, contact customer support. |
| Charging indicator does not light up. | Charging cable or adapter is faulty, or not properly connected. | Check connections. Try a different USB port or adapter. |
7. Specifications
- Model: MG3920/15
- Brand: PHILIPS
- Power Source: Rechargeable Battery
- Charging Time: Approximately 8 hours
- Run Time: Up to 60 minutes
- Product Dimensions: 23.01 x 14.5 x 7 cm
- Item Weight: 0.3 Grams
- Color: Black
- Attachments: 7-in-1 (Precision trimmer, Nose/Ear trimmer, 3 Beard combs, 3 Hair combs)





