Brother HL-L2350DW how to clean the drum unit with Drum Dot Print
When the printout has dots or other repeating marks at 94 mm intervals.
Steps
- Make sure the machine is in Ready mode.
- Press ▲ or ▼ to display the Print Reports option and press OK.
- Press ▲ or ▼ to select Drum Dot Print.
- Press Go to print the Drum Dot Check Sheet.
- Hold the Power On/Off button to turn the machine off.
- Open the front cover.
- Take the toner cartridge and drum unit assembly out of the machine.
- Push down the green lock lever and take the toner cartridge out of the drum unit.
- Turn the drum unit so that the drum unit gear is on the left side.
- Use the numbered markers next to the drum roller to find the mark. A dot in column 2 on the check sheet is a mark in drum region 2.
- Turn the edge of the drum unit toward you and look at the drum surface for the mark.
NOTICE
IMPORTANT: To avoid print quality problems, DO NOT touch the surface of the drum unit, only the wheel on the end.
Marked NOTICE by the manufacturer Source: Routine Maintenance: Clean the Machine, p. 206
- Wipe the drum surface gently with a dry cotton swab until the mark or foreign material comes off.
NOTICE
NOTE: DO NOT clean the surface of the photosensitive drum with a sharp object or any liquids.
Marked NOTICE by the manufacturer Source: Routine Maintenance: Clean the Machine: Clean the Drum Unit Using Drum Dot Print, p. 206
- Push the toner cartridge firmly into the drum unit until you hear it lock.
- Install the toner cartridge and drum unit assembly in the machine.
- Close the front cover.
- Press the Power On/Off button to turn the machine on.
Source: Routine Maintenance: Clean the Machine: Clean the Drum Unit Using Drum Dot Print Source: Routine Maintenance: Clean the Machine: Clean the Drum Unit Using Drum Dot Print, pp. 204-206
Used for
- Faint or light print
- Grey background on printed pages
- Ghosting images on the page
- Toner specks on the page
- White lines across the page
- Lines across the page
- White lines, bands or ribbing across the page
- White or black spots at 94 mm intervals
- Black toner marks across the page
Other HL-L2350DW procedures
- How to clear a paper jam in the paper trayWhen the control panel or the Status Monitor reports a jam in the paper tray (Jam Tray 1).
- How to clear a paper jam at the back of the machineWhen the LCD shows Jam Rear.
- How to clear a paper jam inside the machineWhen the LCD shows Jam Inside.
- How to clear a paper jam in the 2-sided trayWhen the LCD shows Jam 2-sided.
- How to clean the corona wireWhen the LCD shows Drum ! or you have print quality problems.
- How to clean the paper pick-up rollersWhen the machine has paper feed problems.
- How to replace the toner cartridgeWhen the LCD shows Replace Toner or Toner Ended.
- How to replace the drum unitWhen the LCD shows Replace Drum.
- How to cancel a print job from the control panelWhen a job is stuck, incomplete or prints garbage.
- How to print a test pageWhen a print quality problem appears.
- How to print the Printer Settings pageWhen you need the machine's current settings on paper.
- How to print the Network Configuration ReportWhen you need the IP address, subnet mask, node name or MAC address, or the link status.
- How to print the WLAN ReportWhen the wireless connection fails and you need the TS-xx error code.
- How to connect to Wi-Fi with the control panel setup wizardWhen you set up the machine on a wireless network from its own control panel.
- How to connect to Wi-Fi with WPS push buttonWhen the wireless access point or router supports WPS (PBC).
- How to connect to Wi-Fi with WPS PIN codeWhen the wireless access point or router supports WPS and you want to enter a PIN.
- How to connect to Wi-Fi when the SSID is not broadcastWhen the access point or router does not broadcast its SSID.
- How to set up Wi-Fi Direct with the one-push methodWhen the mobile device supports Wi-Fi Direct.
- How to set up Wi-Fi Direct manuallyWhen the mobile device supports neither Wi-Fi Direct nor WPS.
- How to repair the network connection with the Network Connection Repair ToolWhen a Windows computer cannot print to the machine because the machine has the wrong IP address or Subnet Mask.
- How to reset the network settingsWhen network settings, including the password and IP address, must return to the factory defaults.
- How to reset the machine settingsWhen settings you changed, including the Setting Lock and the language, need to return to their defaults.
- How to factory reset the machineBefore you dispose of the machine.
- How to check the firmware versionTo read the installed firmware version from the LCD.
- How to check the serial numberWhen you need the machine's serial number.
- How to check the remaining life of toner and drumTo see how much life the toner cartridge and drum unit have left.
- How to turn on Toner SaveTo reduce toner use when lighter print is acceptable.
- How to turn Quiet Mode on or offTo reduce printing noise at the cost of print speed, or to restore normal speed.
Sources
- Online User's Guide, HL-L2310D / HL-L2350DW / HL-L2357DW / HL-L2370DN / HL-L2375DW (UK English). Brother Industries, Ltd. Document cv_hll2310d_uke_oug_c, revision c (PDF created 2021-01-31), 249 pages, en-GB. download.brother.com (PDF). Listed on the manufacturer's support page. Retrieved 13 November 2026.
Page numbers are the numbers printed in the manual. Where this page and the manual differ, follow the manual.