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HP LaserJet Toner Collection Unit - Black

HP LaserJet Toner Collection Unit - Black

HP printer maintenance kits ensure your HP printer remains in working condition and continues prov...

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Product Information

Full details

This guide is for HP Color LaserJet Managed E85055 and HP LaserJet Enterprise Flow MFP M776 printer owners who want to maintain optimal print quality and ensure reliable printer operation. The HP LaserJet Toner Collection Unit (TCU) is an essential component for managing waste toner, ensuring your printer continues to perform at its best; however, proper installation and timely replacement are crucial for its effectiveness.

All features

ColourBlack
Model Part Number3WT90A
BrandHP

Extended Product Information

FAQs

How often should I replace the toner collection unit?

The replacement frequency depends on your print volume and the type of documents you print. Your printer's control panel or software will typically alert you when the unit is full and needs replacement. It's recommended to replace it promptly when prompted by your printer.

Can I clean and reuse the old toner collection unit?

No, toner collection units are designed for single use. Attempting to clean and reuse them can lead to toner spills, damage to your printer, and significantly reduced print quality. Always replace a full unit with a new, genuine HP part (MPN 3WT90A).

What happens if I don't replace a full toner collection unit?

If you don't replace a full toner collection unit, your printer will likely stop printing and display an error message. Continuing to use the printer with a full unit can lead to toner leaks inside the machine, causing print quality issues (streaks, smudges) and potentially damaging sensitive internal components, leading to costly repairs.

Is this unit compatible with other HP LaserJet models?

No, this specific toner collection unit (MPN: 3WT90A) is designed only for the HP Color LaserJet Managed E85055 and HP LaserJet Enterprise Flow MFP M776 series printers. Always check your printer's manual or HP's website for compatible supplies for your exact model.

How do I properly dispose of the used unit?

Used toner collection units should be recycled responsibly. Do not throw them in regular trash. HP offers recycling programs for their supplies. Visit the HP website or check with your local recycling facilities for guidance on proper disposal of electronic waste and toner cartridges containing residual toner.

Are there any safety precautions when handling the unit?

Yes, handle the unit carefully to avoid toner spills. If toner gets on your skin, wash it off with cool water and soap. Avoid inhaling toner dust; it's best to work in a well-ventilated area. Keep the unit out of reach of children. Always power off and unplug the printer before handling any internal components.

Troubleshooting

Printer displays "Toner Collection Unit Full" error after replacement.

Ensure the new unit is fully seated and clicked into place. Some printers require a power cycle (turn off, unplug, wait 30 seconds, plug in, turn on) to fully register a new component. If the error persists, verify you installed the correct unit (MPN 3WT90A) for your printer model.

Prints have streaks or smudges immediately after replacing the TCU.

Check if any toner spilled inside the printer during the replacement process. Gently wipe away any loose toner with a dry, lint-free cloth. Also, ensure the new TCU is correctly installed. Run a few test prints or a cleaning cycle through your printer's menu to help clear any initial residue.

Toner leaks from the old unit during removal.

Handle the old unit carefully, without tilting or shaking. Immediately place it into a plastic bag to contain any loose toner. If toner spills inside the printer, use a specialized toner vacuum (not a regular household vacuum) or a damp cloth (ensure printer is off and unplugged) to clean it up. Avoid inhaling toner dust.

Printer doesn't recognize the new TCU.

Double-check that the unit is the correct MPN (3WT90A) for your specific printer model. Ensure it is fully inserted and the access panel is securely closed. A firm click indicates proper seating. If still unrecognized, power cycle the printer. Contact HP support if the issue persists after these steps.

Pros and Cons

Pros

  • Ensures peak printer performance and maintains high print quality over time.
  • Extends the lifespan of your compatible HP LaserJet printer by protecting internal components.
  • Prevents messy toner spills and internal contamination within the printer.
  • Guaranteed compatibility and reliability as an original HP manufactured part.
  • Simple and quick to replace when the unit is full, minimizing maintenance effort.

Cons

  • Requires periodic replacement, which is an ongoing consumable cost.
  • Improper disposal of used units can be environmentally harmful and requires responsible recycling.
  • Specific compatibility limits its use to designated HP Color LaserJet Managed E85055 and HP LaserJet Enterprise Flow MFP M776 printer models.

Setup and Installation1. Power Off: Before beginning, ensure your HP LaserJet printer is powered off and unplugged from the wall outlet.2. Locate Access Panel: Refer to your printer's user manual to locate the access panel for the toner collection unit. This is usually on the side or front of the printer.3. Open Access: Open the designated access panel.4. Remove Old Unit: Carefully grasp the handle of the old toner collection unit and slide it straight out of the printer. Place the used unit immediately into a plastic bag to prevent toner spills.5. Unpack New Unit: Remove the new HP LaserJet Toner Collection Unit (MPN: 3WT90A) from its packaging. Avoid touching the toner opening or internal components.6. Insert New Unit: Align the new unit with the slot in the printer and slide it in until it clicks firmly into place.7. Close Panel: Close the access panel securely.8. Power On: Plug in and power on your printer. The printer should recognize the new unit.### CompatibilityThis HP LaserJet Toner Collection Unit (MPN: 3WT90A) is specifically designed for use with the following HP printer models:- HP Color LaserJet Managed E85055 series printers- HP LaserJet Enterprise Flow MFP M776 series printersUsing this unit with incompatible printers may cause damage or prevent proper operation.### Care and Disposal- Handling: Always handle the toner collection unit by its designated handles. Avoid shaking or tilting a full unit to prevent toner leaks.- Storage: Store new units in their original packaging in a cool, dry place until ready for use.- Disposal: Used toner collection units contain residual toner, which can be an environmental pollutant. HP encourages responsible recycling. Check HP's recycling program or local regulations for proper disposal methods. Do not dispose of it in regular household waste.

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