Brother HL-L2386DW

Function code	Function
01	Initialize EEPROM parameters
03	Transition to shipping state
09 *	Monochrome print quality test pattern
10	Set worker switches (WSW)
11	Print worker switch (WSW) setting data
12 *	Check LCD operation
13	Check control panel key operation
25 *	Display software version
32	Check sensor operation
33	Display LAN connection status
45 *	Change USB No. return value / Adjust left-end print position / Adjust upper-end print position / Change ON/ OFF setting for lower case compensation / Change ON/ OFF setting for fixation strength improvement
57	Check toner cartridge
67	Continuous print test
69	Print frame pattern (single-side printing)
70	Print frame pattern (duplex printing)
71	Print test pattern
74	Setting by spec
77 *	Print maintenance information
78	Check fan operation
80 *	Display machine log information
82 *	Display machine error code
88	Reset irregular power supply detection counter of low- voltage power supply PCB
91 *	Initialize EEPROM parameters
99	Quit maintenance mode

* The maintenance mode functions shaded in the table can be used by end users.