Brother MFC5200C Service Manual page 199

(11) General communications-related
Code 1
B0
B0
B0
(12) Maintenance mode
Code 1
E0
E0
(13) Equipment error
Code 1
FF
Code 2
02 Unable to receive the next-page data.
03 Unable to receive polling even during turn-around transmission
due to call reservation.
04 PC interface error.
Code 2
01 Failed to detect 1300 Hz signal in burn-in operation.
02 Failed to detect PB signals in burn-in operation.
Code 2
X X Equipment error (For X X, refer to Subsection 8.1.1 [ 2 ].)
Causes
Causes
Causes
8 -1 5