Brother HL-L2350DW
is not printing black.
Brother HL-L2350DW is not printing black? Missing black usually points to a blocked nozzle, an empty or unseated black supply, or a setting that routes black text through the wrong path. On this laser model, check Brother iPrint&Scan, toner and drum seating, and deep-sleep behavior first. Check the exact supply and indicator pattern for this model below.
Try these in order.
Stop as soon as the printer behaves. Each step removes one likely cause without changing settings you may need later.
- Black text is faint, gray, or missing while color prints
- A test page shows uneven or streaky black
- The toner indicator reports low or empty
- Brother HL-L2350DW behavior points back to Brother iPrint&Scan, toner and drum seating, and deep-sleep behavior.
- 01
Print a supplies status page
Print the supplies or toner status page before replacing anything. It separates toner remaining from drum life. On the Brother HL-L2350DW, use Brother iPrint&Scan or the 1-line monochrome LCD with physical buttons for this check.
Expected result: The page shows whether toner or drum is the exhausted part.
- 02
Reseat the black toner and drum
Remove and reinstall the black toner cartridge and drum unit until they click. Confirm any protective strips were removed.
Expected result: The toner or drum indicator clears and black output returns.
- 03
Turn off toner-save mode
In the driver or panel settings, disable toner-save, economy, or draft mode and reprint the page at normal density.
Expected result: Black text prints darker without replacing any part.
Match your symptom, jump to the right fix.
If: The supplies page shows black toner empty
Then: Replace the black toner cartridge first.
If: Toner is fine but black is streaky or faded
Then: Check toner-save mode, then suspect the drum unit.
If: Black prints but is gray and uniform
Then: Turn off toner-save or economy mode before replacing parts.
Usually one of these.
- Brother iPrint&Scan, toner and drum seating, and deep-sleep behavior is the model-specific checkpoint to verify first.
- The black toner cartridge is empty, low, or not seated correctly.
- The drum unit is at end of life and no longer transfers black toner.
- The driver is using a draft, economy, or toner-save setting.
Move to the deeper fix.
Replace the black toner
If the supplies page shows black toner empty or very low, replace it with the correct cartridge for this model and reprint the test page.
Expected result: Black text prints at full density after the new toner is seated.
Replace the drum unit
If black remains streaky or faded after a fresh toner, the drum is likely at end of life. Replace it using the model guide. Use the official Brother support page for the exact Brother HL-L2350DW package before changing firmware or resetting the device.
Expected result: Even, dark black output returns after the drum is swapped.
- Do not shake a toner cartridge to get more pages; it can spill toner inside the printer.
- Do not expose the drum unit to direct light for long, or pages may develop a repeating defect.
Before you reset everything.
Why is black printing faint on a laser printer?
Faint black usually means low toner, a toner-save setting, or a drum at end of life. Print a supplies status page to see which. On this model, start with Brother iPrint&Scan and the official support instructions.
Is it the toner or the drum?
Toner and drum fail differently. Empty toner makes pages uniformly light; a worn drum makes repeating streaks or marks. The supplies page reports both.
Does toner-save mode make text look gray?
Yes. Toner-save and economy modes reduce toner use and make text noticeably lighter. Turn them off for normal output.
Can I use a compatible toner cartridge?
Compatible cartridges can work, but a faulty one is a common cause of faint output. Try a genuine cartridge if problems persist.
Brother HL-L2350DW facts that change the fix.
Supplies and parts
- Toner
- TN-730 (~1,200 pages) / TN-760 (~3,000 pages)
- Drum unit
- DR-730 (~12,000 pages)
- User replaceable
- toner cartridge, drum unit
LCD shows 'Toner Low' (still printable), then 'Replace Toner' when empty. TN-770 is NOT compatible with this model.
Error codes and lights
Toner cartridge near end of life; you can still print.
Order a TN-730/TN-760 to have ready for 'Replace Toner'.
Toner at end of life; the machine stops printing.
Replace the toner cartridge with a new TN-730/TN-760.
Toner cartridge or toner+drum assembly is not installed correctly.
Remove the assembly, reseat the toner in the drum unit, and reinstall.
Drum unit is near or at end of life.
Replace with a DR-730 and reset the drum counter.
Corona wire needs cleaning, or the drum/toner is not seated.
Clean the corona wire, reseat the toner, or replace the drum.
Paper is jammed in the back (fuser), the tray, or the 2-sided path.
Open the fuser cover or pull out the tray and clear the paper.
The inside is too hot; printing is paused.
Wait for it to cool; if the fan is not spinning, disconnect power for a few minutes.
Connectivity and operating systems
- Connection
- Wi-Fi · USB
- Wi-Fi
- 2.4 GHz only
- Control panel
- 1-line monochrome LCD with physical buttons
- Paper trays
- 250-sheet tray + 1-sheet manual feed slot
- Works with
- Windows 11, Windows 10, macOS, Linux, iOS (AirPrint), Android (Mopria)
Use the exact model guide.
These links point to the manufacturer resources for this model. Use the manual for panel symbols and the driver page for software or operating-system issues.
Sources checked 2026-08-13.