Introduction
This manual provides essential information for the installation, operation, maintenance, and troubleshooting of your HP 43X Black High-yield Toner Cartridge (Model C8543X). Designed for optimal performance with compatible HP LaserJet printers, this cartridge ensures consistent quality and reliable printing, crucial for productivity in any office environment.
Original HP Toner Cartridges are engineered to work seamlessly with your HP printer, helping to prevent common printing problems and deliver high-quality results page after page.
Setup and Installation
Follow these steps to properly install your new HP 43X Black High-yield Toner Cartridge:
- Unpack the Cartridge: Carefully remove the new toner cartridge from its packaging. Avoid touching the imaging drum or electrical contacts.
- Prepare the Cartridge: Gently rock the cartridge back and forth several times to distribute the toner evenly inside. This helps ensure consistent print quality.
- Open Printer Access: Open the toner cartridge access door on your HP LaserJet printer. Refer to your printer's specific user manual for exact instructions on opening the access door.
- Remove Old Cartridge (if applicable): If replacing an existing cartridge, grasp the handle of the old cartridge and pull it straight out of the printer.
- Insert New Cartridge: Align the new toner cartridge with the tracks inside the printer and push it firmly until it clicks into place. Ensure it is securely seated.
- Close Printer Access: Close the toner cartridge access door. The printer will typically perform a brief calibration.

Image Description: An HP 43X Black High-yield Toner Cartridge is shown alongside its packaging box. The cartridge is black with blue accents, indicating it's ready for installation into a compatible HP LaserJet printer. This image illustrates the product as it would appear when removed from its retail packaging.
This cartridge is compatible with a wide range of HP LaserJet printers, including: HP LaserJet 9000, 9000dn, 9000hnf, 9000hns, 9000n, 9040dn, 9040n, 9050dn, 9050n; HP LaserJet 9000 MFP, 9000L MFP, 9040 MFP, 9050 MFP.
Operating the Cartridge (Printing)
The HP 43X Black High-yield Toner Cartridge is designed for high-volume printing, offering an approximate yield of 30,000 pages. It delivers sharp, rich black text and consistent print quality from the first page to the last.
- Consistent Output: Expect reliable and consistent print quality throughout the cartridge's lifespan, ensuring professional-looking documents.
- High Yield: The high-yield design minimizes the frequency of cartridge replacement, contributing to uninterrupted workflow.
- Sharp Text and Graphics: Original HP toner produces crisp, clear black text and detailed graphics, essential for business documents.

Image Description: Two magnifying glasses are positioned over printed documents, highlighting the clarity and detail of the text and images. The image emphasizes the cartridge's ability to produce vibrant colors and rich blacks, showcasing high-quality print output.

Image Description: This image depicts various printed documents, including reports and marketing materials, suggesting the versatility and high quality of prints achieved with the HP toner. It conveys the message of "Exceptional printing performance you can count on."
Maintenance and Care
Proper handling and maintenance of your toner cartridge can extend its life and ensure optimal performance:
- Storage: Store new cartridges in their original, unopened packaging in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling: Always handle the cartridge by its sides. Avoid touching the imaging drum, as oils from your skin can cause print defects.
- Recycling: Original HP Toner Cartridges are designed with sustainability in mind. 100% of Original HP Toner Cartridges contain recycled content. Please recycle your empty cartridges through HP's Planet Partners program or local recycling facilities.

Image Description: An HP LaserJet toner cartridge is shown with the text "Easy to recycle" prominently displayed. This highlights HP's commitment to environmental responsibility and the recyclability of their toner products.

Image Description: A pair of hands holds a pile of small, dark, irregularly shaped plastic pieces, representing recycled materials. The accompanying text states, "Materials from recycled HP Cartridges are used in new Original HP Cartridges," emphasizing the circular economy and sustainability efforts.
Troubleshooting
If you encounter issues with your HP 43X Black High-yield Toner Cartridge, consider the following common problems and solutions:
- Poor Print Quality (Streaks, Fades, Spots):
- Gently rock the cartridge to redistribute toner.
- Ensure the cartridge is properly seated in the printer.
- Check printer settings for print quality adjustments.
- If the cartridge is nearing its end of life, replace it.
- "Low Toner" or "Replace Cartridge" Message:
- These messages indicate the cartridge is low on toner or empty. Replace the cartridge with a new one.
- Cartridge Not Recognized:
- Remove the cartridge and check for any protective tapes or covers that may still be attached.
- Ensure the cartridge is correctly installed and fully seated.
- Clean the electrical contacts on the cartridge and in the printer with a lint-free cloth.
- Restart the printer.

Image Description: A document with printed content is shown next to a large red triangle with an exclamation mark, symbolizing a warning or issue. This image visually represents the concept of potential printing problems and the need for consistent, uninterrupted printing.
For persistent issues, consult your HP printer's specific user manual or visit the official HP support website.
Specifications
| Feature | Detail |
|---|---|
| Model Number | C8543X |
| Ink Color | Black |
| Page Yield (Approx.) | 30,000 pages (based on ISO/IEC 19752) |
| Compatibility | HP LaserJet 9000, 9000dn, 9000hnf, 9000hns, 9000n, 9040dn, 9040n, 9050dn, 9050n; HP LaserJet 9000 MFP, 9000L MFP, 9040 MFP, 9050 MFP |
| Item Weight | 9.24 pounds (4.2 Kilograms) |
| Product Dimensions | 15.59 x 23.43 x 7.8 inches |
| Material Type | Plastic |
| Recycled Content | 100% of Original HP Toner Cartridges contain recycled content |
| Included Components | Toner cartridge, Recycling guide |
Warranty and Support
HP Original Toner Cartridges are backed by HP's commitment to quality and reliability. For specific warranty details, please refer to the documentation included with your product or visit the official HP support website.
HP provides comprehensive support for its products. If you require assistance with installation, troubleshooting, or have questions about your HP 43X toner cartridge, please visit the Official HP Support Website or contact HP customer service.
Original HP Toner Cartridges are designed with tamper-resistant chips, firmware, and packaging to help protect your printer from malicious code and maintain data integrity.

Image Description: This image illustrates the security features of HP Original Toner Cartridges, showing a cartridge and its box with icons representing tamper-resistant chips, firmware, and secure packaging. This emphasizes how HP protects your printer and data.