Brother MFC-3340CN Service Manual page 266

Error Code
(Hex)
B2 Gain control data level
error for scanning.
(Not used.)
B3 Scan area left edge
detection error.
(Not used.)
B4 Scan area right edge
detection error.
(Not used.)
B5 Horizontal scanning edge
reduction detection error in
scanning area setting
(Not used.)
B6 Horizontal scanning edge
enlargement detection error
in scanning area setting
(Not used.)
B7 A/D converter reference
voltage error (at High
level).
(Not used.)
B8 A/D converter reference
voltage error (at Low
level).
(Not used.)
B9 Light emission intensity
error of the LED array
(Exceeding the upper
limit).
BA Not used.
BB White level data error.
Symptom
9-15
Probable Cause
CIS defective
Main PCB defective
CIS defective
White-level reference
film on the document
pressure bar stained
CIS defective
White-level reference
film on the document
pressure bar stained
-
-
Main PCB defective
Main PCB defective
CIS defective
Main PCB defective
CIS defective
Main PCB defective
Solution
Replace the CIS unit.
Replace the main PCB.
Replace the CIS unit.
Replace the document
pressure bar.
Replace the CIS unit.
Replace the document
pressure bar.
-
-
Replace the main PCB.
Replace the main PCB.
Replace the CIS unit.
Replace the main PCB.
Replace the CIS unit.
Replace the main PCB.
Confidential