Brother MFC-J6510DW

2-36
Confidential
 Error Code 40
Casing internal thermistor defective. (Detects -20ºC or below or 80ºC or higher)
 Error Code 42
Head drive voltage dropped below the lower limit.
User Check
- This error may occur when the ambient temperature is low. Increase the ambient temperature for
use of the machine.
 Error Code 43
Head thermistor defective. (Detects -20ºC or below or 80ºC or higher when the power is turned
on)
Unable to Init. 40
LCD
Step Cause Solution
1 Casing internal temperature
thermistor defective
Replace the ink refill ASSY.
2 Main PCB defective Replace the main PCB ASSY.
Unable to Print 42
LCD
Step Cause Solution
1 Connection failure of the carriage-
head flat cable or head flat cables
Check the connection and reconnect the
corresponding flat cable(s).
2 Print head defective Replace the head/carriage unit.
3 Power supply PCB defective Replace the power supply PCB.
4 Main PCB defective Replace the main PCB ASSY.
Unable to Print 43
LCD
Step Cause Solution
1 Connection failure of the carriage-
head flat cable or head flat cables
Check the connection and reconnect the
corresponding flat cable(s).
2 Head temperature thermistor
defective
Replace the carriage PCB ASSY.
3 Main PCB defective Replace the main PCB ASSY.