Brother MFC 5490CN - Color Inkjet - All-in-One, Service Manual

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4-9 Confidential
Error Code
(Hex)
Symptom Probable Cause Solution
3*
(except 3E) Head/carriage unit travel
error. Software malfunction Open and close the scanner
cover.
Unplug and plug the AC cord.
Any obstacles on the travel
path of the head/carriage unit Clean and lubricate the CR
guide rail and CR support
chassis.
CR timing belt come off Set the CR timing belt into
place.
CR encoder strip stained or
scratched Replace the CR encoder strip.
Carriage PCB defective Replace the carriage PCB
ASSY.
Head/carriage unit broken Replace the head/carriage unit.
Carriage motor defective Replace the carriage motor.
Main PCB defective Replace the main PCB.
Power supply PCB defective Replace the power supply
PCB.
Maintenance unit defective Replace the maintenance unit.
3E Recording error related
to ASF motor, paper
feed motor, and carriage
motor. ASF encoder disk, PF
encoder disk, or CR encoder
strip stained or scratched Replace the ASF motor ASSY,
PF encoder disk, or CR
encoder strip.
ASF, PF, or CR encoder
defective Replace the ASF motor ASSY,
PF encoder PCB, or carriage
PCB.
ASF, PF, or CR motor
defective Check the ASF motor, paper
feed motor, and carriage
motor, then replace the
defective one(s).
Main PCB defective Replace the main PCB.
40 The casing internal
temperature thermistor
has detected abnormal
temperature in the
machine. Main PCB defective Replace the main PCB.
Casing internal temperature
thermistor defective Replace the ink refill ASSY.
41 Not used.
42 The head drive voltage
has not dropped from the
high to low level within
the specified period. Piezoelectric ceramic
actuator or head driver
defective Replace the head/carriage unit.
Carriage PCB defective Replace the carriage PCB
ASSY.
Main PCB defective Replace the main PCB.