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Epson ColorWorks C4000 maintenance box (SJMB4000) collects excess ink during automatic printhead cleaning cycles to maintain print quality and reliable operation. Replacing the maintenance box when full is required to keep the printer running.
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Key Takeaways
- Compatible with Epson ColorWorks C4000 label printer
- Collects waste ink during printhead cleaning cycles
- Printer will not operate when full — replacement required
- Designed for reliable, mid-volume label printing environments
- Genuine Epson OEM part for consistent performance
What does the maintenance box do?
The maintenance box captures excess ink used during cleaning and maintenance routines, helping maintain printhead performance and ensuring consistent print results.
When should the maintenance box be replaced?
The printer will notify you when the maintenance box is full. Once full, the printer will stop printing until it is replaced.
Why should you keep a spare maintenance box?
Keeping a spare maintenance box on hand helps prevent unexpected downtime. Since the printer cannot operate with a full box, having a replacement ready ensures uninterrupted label production.
Product Specifications
- Product Name: Maintenance Box
- Part Number: SJMB4000
- OEM SKU: C33S021601
- Printer Compatibility: Epson ColorWorks C4000
- Manufacturer: Epson (Genuine OEM)
Why use genuine Epson maintenance boxes?
Genuine Epson maintenance boxes ensure proper fit, accurate capacity tracking, and reliable printer operation. Third-party maintenance boxes void your Epson warranty and may cause print defects, reduced durability, or printer damage.
FAQ: Epson C4000 Maintenance Box
What happens if the maintenance box is full?
The printer will stop printing until the maintenance box is replaced.
Can I empty and reuse the maintenance box?
No, maintenance boxes are designed for one-time use and must be replaced when full.
How often does it need to be replaced?
Replacement frequency depends on print volume and cleaning cycles. It is recommended to keep a spare available.
Is this compatible with other Epson printers?
No, this maintenance box is specifically designed for the Epson ColorWorks C4000 printer.
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