Brother HL-L2350DW “Self-Diagnostic”

The fuser unit failed to reach its temperature in time or is too hot.

Causes and checks

Service

If the checks above do not clear it, contact Brother Solutions Center, support.brother.com. Europe: contact details of the local Brother office are at global.brother/gw. Source: Appendix: Brother Numbers, p. 244

Other HL-L2350DW codes

• 2-sided Disabled: Automatic 2-sided printing cannot start because the back cover or the 2-sided tray is not fully in place.
• Cartridge Error: The toner cartridge is not installed correctly.
• Cooling Down: The machine is too hot inside and has paused the print job.
• Cover is Open: The front cover or the fuser cover is not fully closed.
• Drum !: The corona wire on the drum unit needs cleaning, or the drum unit is not seated.
• Drum End Soon: The drum unit is close to the end of its life.
• Jam 2-sided: Paper is stuck in the 2-sided tray or inside the back cover.
• Jam Inside: Paper is stuck inside the machine.
• Jam Rear: Paper is stuck at the back of the machine.
• Jam Tray 1: Paper is stuck in the tray shown on the LCD.
• Manual Feed: The job is set to the manual feed slot and the slot holds no paper.
• Media Mismatch: The paper type in the printer driver does not match the Paper Type setting in the machine menu.
• No Drum Unit: The machine does not detect a correctly installed drum unit.
• No Paper: The paper tray is empty or the paper is loaded incorrectly.
• No Paper T1: The machine failed to feed paper from the tray shown on the LCD.
• No Toner: The machine does not detect a correctly installed toner cartridge.
• Out of Memory: The machine's memory cannot hold the print job.
• Print Data Full: The machine's memory is full of stored print data.
• Print Unable ##: The machine has a mechanical problem.
• Replace Drum: The drum unit has reached the end of its life, or the counter was not reset after the last drum change.
• Replace Toner: The toner cartridge has reached the end of its life and the machine stops all print operations.
• Size Error: The paper size set in the printer driver is not supported by the selected tray.
• Size Error DX: The paper size cannot be used for automatic 2-sided printing. Only A4 can.
• Size Mismatch: The paper in the tray is not the size the machine expects.
• Toner Ended: The toner cartridge is used up and has to be replaced.
• Toner Low: The toner cartridge is nearly at the end of its life and the machine still prints.
• Connection Error: Other devices are trying to join the Wi-Fi Direct network at the same time.
• Connection Fail: The machine and the mobile device lost contact during Wi-Fi Direct configuration.
• No Device: The machine does not find the mobile device during Wi-Fi Direct configuration.
• TS-01: Wireless is switched off on the machine.
• TS-02: The machine does not see the wireless access point or router.
• TS-04: The router uses an authentication or encryption method that the machine does not support.
• TS-05: The SSID or Network Key is wrong.
• TS-06: The authentication method, encryption method or Network Key is wrong.
• TS-07: The machine finds no access point or router with WPS switched on.
• TS-08: The machine finds more than one WPS-enabled access point or router.

Sources

1. 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.

Applies to

HL-L2350DW. United Kingdom.

Source

Online User's Guide, HL-L2310D / HL-L2350DW / HL-L2357DW / HL-L2370DN / HL-L2375DW (UK English), cv_hll2310d_uke_oug_c revision c (PDF created 2021-01-31)

Last verified

13 November 2026

Handbook

Brother HL-L2350DW laser printer in Printers; all Brother handbooks