Brother MFC-3340CN Service Manual page 275

(11) General communications-related
Code 1
B0
B0
B0
BF
BF
BF
* Establishment of FAX communication
FAX communication is established when the calling station receives a DIS (reception capability)
signal from the called station and the called station receives an NSS or DCS (communications test)
signal from the calling station.
(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.
Communication canceled by pressing the STOP key before
01
establishment of FAX communication*.
Communication canceled by pressing the STOP key after
02
establishment of FAX communication*.
03 Transmission canceled due to a scanning error caused by no
document or document feed problem in ADF scanning in real time
transmission.
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
Causes
Causes
Causes
9-24
Section 9.1.1 [ 2 ].)
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