
Paper shredders are essential for secure document disposal, and the Bonsaii C233-B 110-sheet micro-cut shredder is a standout product due to its efficiency and durability. However, even the best devices can encounter occasional hiccups. This guide provides comprehensive troubleshooting steps to resolve issues when your Bonsaii C233-B stops working.
Understanding Your Bonsaii C233-B Shredder
Before diving into troubleshooting, let’s recap the shredder’s key features:
- Dual-Functionality: Handles up to 110 sheets through auto-feed and 12 sheets via manual-feed.
- Safety Features: Prevents operation if the shredder head isn’t correctly positioned or the basket isn’t secure.
- User-Friendly Indicators: LED lights signal operational status, jams, overheating, or basket fullness.
- Micro-Cut Technology: Shreds paper into 0.16 x 0.47-inch particles, ensuring maximum security.

These features enhance usability but also incorporate safety mechanisms that might temporarily halt the machine.
Common Reasons for Malfunctions and Their Solutions
Here are potential issues and step-by-step solutions to get your shredder back in action:
1. The Shredder Won’t Start
If your shredder doesn’t power on, consider these possible reasons:
Power Supply Issues:
- Check if the power plug is securely connected.
- Ensure the outlet has power by testing with another device.
Voltage Mismatch:
- Verify the shredder is plugged into a 120VAC, 60Hz power supply. Low or fluctuating voltage may prevent operation.
Overheating Protection:
- The shredder has a thermal protection system. If it overheats from prolonged use, it will automatically shut down.
- Solution: Wait for 30-60 minutes to allow the shredder to cool naturally.
2. Shredder Stops Mid-Operation
This often happens due to overload or basket-related issues:
Basket Full:
- A full basket will stop the shredder. The “Auto” button flashes blue when this occurs.
- Solution: Empty the basket, reassemble it securely, and ensure the “Auto” button light turns solid blue.
Overloading:
- Exceeding the maximum sheet capacity (110 sheets for auto-feed; 12 sheets for manual feed) can halt the machine.
- Solution: Remove excess sheets and retry.
3. Paper Jams

Jams are among the most common issues, but the Bonsaii C233-B offers several features to resolve them:
Auto-Feed Jams:
- The “Auto” button flashes red and blue.
- Solution:
- Open the auto-feed connecting plate and remove jammed paper.
- Feed thinner stacks of paper to avoid further jams.
Manual-Feed Jams:
- The “Auto” button flashes red.
- Solution:
- Press the “REV” (Reverse) button to release jammed paper.
- If necessary, alternate between the “REV” and “FWD” buttons for 3-5 seconds to clear severe jams.
- Prevention Tips:
- Avoid wrinkled, folded, or damp paper in the auto-feed.
- Manually feed thicker or uneven sheets to reduce strain on the auto mechanism.
4. Loud Noise During Operation
If the shredder produces excessive noise:
Uneven Placement:
- Ensure the shredder is placed on a flat, stable surface to minimize vibrations.
- Solution: Relocate the shredder if necessary.
Maintenance Needs:
- Paper dust accumulation can cause noise.
- Solution: Use a shredder lubricant sheet to clean and lubricate the blades.
5. Continuous Operation Even When Idle
A shredder running unnecessarily may have sensor-related issues:
Blocked Sensor:
- Dust or debris around the feeding opening can obstruct the sensors.
Solution:
- Unplug the shredder.
- Clean the sensors gently using a soft cloth or cotton swab.
- Avoid sharp tools to prevent damage.
Regular Maintenance Tips
To keep your Bonsaii C233-B shredder in top shape:
- Lubricate Regularly: Use Bonsaii-approved lubricant sheets (e.g., LS24 or LS12) every 2-4 weeks, depending on usage.
- Clean the Basket: Empty the basket frequently to prevent overflow.
- Avoid Prohibited Materials: Do not shred adhesive labels, cardboard, transparencies, or laminates, as these can damage the blades.
- Monitor Usage: Adhere to the recommended daily usage of 65 sheets via manual-feed or 2 credit cards.
When to Seek Professional Help
If the above solutions don’t resolve your issue, the shredder might have a more complex problem:
- Damaged Power Cable: Replace the cable with one of the same specifications through a qualified technician.
- Defective Parts:
- Contact Bonsaii’s customer service at customer-care@bonsaii.com or call 1-844-728-6917.
- Be prepared to provide details about your shredder, including purchase date and a description of the issue.

Final Thoughts
The Bonsaii C233-B is designed to deliver reliable performance for years, but occasional troubleshooting is a natural part of using any device. By understanding the machine’s features and following these steps, you can quickly resolve most issues and prolong its lifespan.
Remember, regular maintenance is key. If you encounter persistent problems, Bonsaii’s customer service team is just a call or email away to assist you.