Brother HL-L2370DWXL - Page 74

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Confidential
 Error code F900
The spec code was not entered correctly.
Step Cause Remedy
1
The power was turned OFF while
function code 74 was running.
Reenter the spec code. (Refer to “1.3.16
Setting by spec (Function code 74)” in
Chapter 5.)
2 Main PCB failure Replace the main PCB ASSY.
Memo:
Press the [▲] or the [▼] under error code F900 display to select the maintenance mode.