Brother HL 5030 - B/W Laser Printer Service Manual page 192

CHAPTER 6 TROUBLESHOOTING
(7) Close the jam clear cover. Close the back output tray.
(8) Push the lock lever down and take the toner cartridge out of the drum unit assembly.
Take out the jammed paper if there is any inside the drum unit.
(9) Put the drum unit assembly back in the printer.
(10) Put the paper tray in the printer.
(11) Close the front cover.
Fig. 6-9
6-12