Brother DCP 8040 - B/W Laser - All-in-One Service Manual page 213

CHAPTER 6 TROUBLESHOOTING
Error
Code
(Hex)
F5
F6
FA
FF
Error factor
Internal software error.
PC interface error.
Reading motor error detected.
Memory management error.
Replace the main PCB if this error
occurs frequently.
Interface cable
Main PCB
Reading motor
Replace the main PCB if this error
occurs frequently.
6-10
Check: