Konica Minolta AccurioPress Waste Toner Box & Supply Errors — Causes & Fixes
Waste toner box and supply-related errors are among the more straightforward faults on a production press, but they’re also easy to mishandle if you’re not familiar with the correct procedure — a rushed or incorrect waste toner box replacement can cause spillage or a false “not installed” error that’s more annoying to resolve than the original alert.
1. Waste toner box full or near-full
What it usually means: The waste toner container, which collects toner not transferred to paper during printing, has reached or is approaching its capacity.
Common causes:
Genuine accumulation reaching capacity through normal use — this is expected and not a fault
Higher-than-average waste generation from a period of unusually heavy or high-coverage printing
A sensor reading issue if the box appears full sooner than expected volume would suggest
What to check first: In most cases, this is simply the machine correctly reporting that the box needs replacement — check your machine’s manual for the correct replacement procedure rather than assuming a fault. If the box reports full unusually quickly relative to your typical volume, it’s worth noting whether recent print jobs were unusually heavy in coverage, since this affects waste generation rate.
2. “Waste toner box not installed” error after replacement
What it usually means: After replacing the box, the machine’s sensor isn’t detecting it as correctly and fully installed.
Common causes:
The new box not fully seated or locked into its housing
A sensor contact point obstructed by toner residue from the replacement process
Using a non-genuine waste toner box not properly recognized by the detection system
What to check first: Remove and reinstall the box, checking carefully that it locks fully into place — this resolves the majority of these errors. If the error persists with a properly seated genuine box, check the sensor contact area for any toner residue from the replacement process that might be interfering with detection.
3. Toner supply error unrelated to waste box (main toner cartridge)
What it usually means: The machine isn’t detecting expected toner supply from the main cartridge, distinct from waste toner errors.
Common causes:
Cartridge not fully seated, as covered in our color calibration error code guide
Cartridge genuinely depleted faster than expected due to a high-coverage print period
A non-genuine cartridge triggering a detection mismatch, as covered in our hidden-cost guide
What to check first: Reseat the cartridge fully first, since this is both the most common cause and the easiest to rule out. If using a non-OEM cartridge, detection mismatches are a known risk specifically with non-genuine consumables.
4. Recurring waste toner errors sooner than expected
What it usually means: If waste toner box replacement is needed noticeably more often than your machine’s typical rate, it may indicate an underlying issue rather than simply higher volume.
Common causes:
A genuine increase in job volume or coverage that naturally increases waste generation
A developer or drum issue causing excess toner waste beyond what normal printing would generate, as covered in our developer unit and drum guides
Non-genuine toner generating more waste due to inconsistent particle behavior, as covered in our hidden-cost guide
What to check first: If volume and job mix haven’t meaningfully changed but waste toner replacement frequency has increased, it’s worth checking whether a print quality issue (background toner, inconsistent density) is also present, since these can share a common root cause with increased waste generation.
Correct replacement procedure — avoiding a bigger mess
Always follow your specific model’s replacement procedure exactly, since incorrect removal angle or technique can cause spillage
Handle the removed box carefully and dispose of it per your local regulations for toner waste — never simply discard it with general waste
Have the replacement box ready before starting the removal process, to minimize the time the machine sits with the old box removed
When a waste toner error isn’t just routine maintenance
If waste toner or supply errors are becoming frequent, recurring shortly after resolution, or accompanied by print quality changes, it’s worth treating as a signal to check the broader system — similar to how other error categories in our guides sometimes point to a root cause beyond the immediate component the error references.
Dealing with a waste toner or supply error that won’t resolve?
Send us the specific error, your machine model, and whether you’re seeing any accompanying print quality changes — we can help you figure out whether it’s routine replacement or something that needs a closer look.
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