Casing Internal Thermistor Defective. (Detects -20ºc Or Below Or 80ºc Or Higher); Head Drive Voltage Dropped Below The Lower Limit; Head Thermistor Defective. (Detects -20ºc Or Below Or 80ºc Or Higher When The Power Is Turned On) - Brother DCPJ525W Service Manual

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Error Code 40
Unable to Init. 40
Casing internal thermistor defective. (Detects -20ºC or below or 80ºC or higher)
Step
1
Casing internal temperature
thermistor defective
2
Main PCB defective
Error Code 42
Unable to Print 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.
Step
1
Connection failure of the head
flexible cable or carriage flat
cables
2
Print head defective
3
Power supply PCB defective
4
Main PCB defective
Error Code 43
Unable to Print 43
Head thermistor defective. (Detects -20ºC or below or 80ºC or higher when the power is turned
on)
Step
1
Head temperature thermistor
defective
2
Main PCB defective
Cause
Replace the ink refill ASSY.
Replace the main PCB ASSY.
Cause
Check the connection and reconnect the
corresponding cable(s).
Replace the head/carriage unit.
Replace the power supply PCB ASSY.
Replace the main PCB ASSY.
Cause
Replace the carriage PCB ASSY.
Replace the main PCB ASSY.
2-33
LCD
Solution
LCD
Solution
LCD
Solution
Confidential

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