Head Voltage Does Not Raise; Asic Thermistor Error; 4C01 Compound Ic Thermistor Error; The Compound Ic Thermistor Detected A Temperature Of -21 Degree-C Or - Brother HL-J6000DW Service Manual

■ Error Code 4900

Head voltage does not raise.

< User Check >
- They may occur due to lower surrounding temperature. Use in warmer surrounding
temperature.
Step
1 Head flat cable connection
failure
2 Carriage flat cable connection
failure
3 Carriage PCB defective
4 Head defective
5 Power supply PCB defective
6 Main PCB defective
■ Error Code 4C00

ASIC thermistor error.

- The ASIC thermistor detected a temperature of -21 degree-C or less, or 125
degree-C or greater, when the machine was turned on.
Error Code 4C01
Compound IC thermistor error.
- The compound IC thermistor detected a temperature of -21 degree-C or less, or
125 degree-C or greater, when the machine was turned on.
Step
1 Head flat cable connection failure
2 Carriage flat cable connection
failure
3 Carriage PCB defective
4 Head defective
5 Power supply PCB defective
6 Main PCB defective
■ Error Code 4E00
Head voltage remains ON and does not turn OFF even after 15 minutes have
passed.
Step
1 Carriage PCB defective
2 Head defective
3 Main PCB defective
Cause
Reconnect the head flat cable.
Reconnect the carriage flat cable.
Replace the carriage PCB ASSY.
Replace the head/carriage unit.
Replace the power supply PCB.
Replace the main PCB.
Cause
Cause
Replace the carriage PCB ASSY.
Replace the head/carriage unit.
Replace the main PCB.
2-39
Solution
Solution
Reconnect the head flat cable.
Reconnect the carriage flat cable.
Replace the carriage PCB ASSY.
Replace the head/carriage unit.
Replace the power supply PCB.
Replace the main PCB.
Solution
Confidential