1. Introduction
This manual provides instructions for the safe and effective use of the XXSZHY 8V Power Adapter. This adapter is designed as a replacement charger for specific Philips Norelco Multigroom Series 3000 electric shavers and trimmers.

Image 1.1: The XXSZHY 8V Power Adapter, featuring a barrel-shaped plug and a standard two-prong wall adapter.
2. Safety Information
The XXSZHY 8V Power Adapter incorporates multiple safety features to ensure reliable operation. Please observe the following:
- Over-Temperature Protection: Prevents overheating during operation.
- Overcurrent Protection: Safeguards against excessive current flow.
- Short Circuit Protection: Protects the device from damage due to short circuits.
- Overcharge Protection: Prevents battery damage from overcharging.
- Overpower Protection: Manages power output to prevent overload.
- Overvoltage Protection: Shields against voltage spikes.
This product is CE, FCC, and RoHS certified, indicating compliance with recognized electronic safety standards.

Image 2.1: Visual representation of the integrated safety protection mechanisms within the power adapter.
3. Compatibility
This 8V 100mA power adapter is specifically designed for Philips Norelco Multigroom Series 3000 models. It is compatible with the following models:
- HQ840
- MG3750 (including MG3750/10, MG3750/50, MG3750/60)
- MG3760 (including MG3760/50)
Important: This charger features a barrel-shaped round plug tip. It is not compatible with 2-prong connectors or models requiring different voltage/amperage specifications, such as 4.3V A00390, 8V HQ850, MG7750, or MG5750.

Image 3.1: Compatible and incompatible Philips Norelco Multigroom models.

Image 3.2: Visual guide to compatible and incompatible charger connector types.

Image 3.3: Ensure your device's charging port matches the round 8V HQ840 type.
4. Setup
To set up your XXSZHY 8V Power Adapter:
- Verify Compatibility: Before connecting, confirm that your Philips Norelco shaver or trimmer model is listed as compatible in Section 3 and that its charging port matches the barrel-shaped plug of this adapter.
- Connect to Power Outlet: Insert the two-prong end of the power adapter into a standard household electrical outlet (100-240V AC, 50/60Hz).
- Connect to Device: Carefully insert the barrel-shaped plug of the adapter into the charging port of your Philips Norelco shaver or trimmer. Ensure a secure connection.
5. Operating Instructions
Once the adapter is properly connected to both the power outlet and your device, the charging process will begin. The specific charging indicator (e.g., LED light) on your Philips Norelco shaver or trimmer will typically illuminate or change state to indicate that it is receiving power. Refer to your shaver's original manual for details on its charging indicators.
Allow sufficient time for your device to fully charge. Disconnect the adapter from the device and the wall outlet once charging is complete or when the device is not in use.
6. Maintenance
Proper care of your power adapter will ensure its longevity and safe operation:
- Cleaning: Disconnect the adapter from all power sources before cleaning. Wipe the adapter and cable with a dry, soft cloth. Do not use liquid cleaners or immerse the adapter in water.
- Storage: Store the adapter in a cool, dry place away from direct sunlight and moisture. Avoid wrapping the cable too tightly around the adapter.
- Cable Care: The cable is designed with a strain-eliminated tail and rugged copper wires for durability. However, avoid sharp bends, kinks, or excessive pulling on the cable, especially near the connectors, to prevent damage.

Image 6.1: Features contributing to the stability and durability of the power adapter cable.
7. Troubleshooting
If your device is not charging, consider the following:
- Check Connections: Ensure the adapter is firmly plugged into both the wall outlet and the shaver/trimmer.
- Verify Power Outlet: Test the wall outlet with another device to confirm it is supplying power.
- Confirm Compatibility: Double-check that your shaver/trimmer model and its charging port are compatible with this 8V HQ840 adapter (refer to Section 3).
- Inspect Cable: Look for any visible damage to the cable or connectors. If damage is present, discontinue use and replace the adapter.
- Device Issue: If the adapter appears functional and compatible, the issue might be with the shaver/trimmer itself. Consult your device's manual or manufacturer support.
8. Specifications
| Feature | Specification |
|---|---|
| Input | 100-240V AC, 50/60Hz, 0.5A |
| Output | DC 8V, 0.1A (100mA), 0.8W |
| Cable Length | 3.3 feet (approximately 42.5 inches) |
| Connector Type | Barrel-shaped round plug (8V HQ840 type) |
| Product Dimensions (Adapter Body) | 2.4 x 1.6 x 0.9 inches |
| Item Weight | 1.6 ounces |
| Color | Black |
| Certifications | CE, FCC, RoHS |

Image 8.1: Physical dimensions of the XXSZHY 8V Power Adapter.

Image 8.2: Power compatibility chart for various voltage and amperage ratings.
9. Warranty and Support
The XXSZHY 8V Power Adapter comes with the following support:
- Refund Policy: Replacement or refund available within 30 days of purchase.
- Replacement Service: Replacement service provided within 12 months of purchase.
For any inquiries or support needs, please refer to the seller's contact information on the platform where the product was purchased.

Image 9.1: Overview of customer support and warranty terms.