Brother MFC-8460N Servise Manual page 333

Error Code
(Hex)
B3 Scan area left edge detection
error.
B4 Scan area right edge detection
error.
B5 Horizontal scanning edge
reduction detection error in
scanning area setting.
B6 Horizontal scanning edge
enlargement detection error in
scanning area setting
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). (Not used.)
BA Not used.
White level data error.
BB
Not used.
BC
Black level data error.
BD
Symptom
9-9
Probable Cause
Black markings on the
white-level reference
film inside the scanner
top cover.
CCD defective
Main PCB defective
Black markings on the
white-level reference
film inside the scanner
top cover.
CCD defective
Main PCB defective
Black markings on the
white-level reference
film inside the scanner
top cover.
CCD defective
Main PCB defective
Black markings on the
white-level reference
film inside the scanner
top cover.
CCD defective
Main PCB defective
Main PCB defective
CCD defective
Main PCB defective
CCD defective
Main PCB defective
CCD defective
Main PCB defective
Solution
Clean the white-level
reference film.
Replace the CCD unit.
Replace the main PCB.
Clean the white-level
reference film.
Replace the CCD unit.
Replace the main PCB.
Clean the white-level
reference film.
Replace the CCD unit.
Replace the main PCB.
Clean the white-level
reference film.
Replace the CCD unit.
Replace the main PCB.
Replace the main PCB.
Replace the scanner cover
(scanner unit).
Replace the main PCB.
Replace the scanner cover
(scanner unit).
Replace the main PCB.
Replace the scanner cover
(scanner unit).
Replace the main PCB.
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