Brother MFC-J6935DW - 4400 Head Driver IC Detects Abnormal Temperature During Operation or Stand-By; Head Flat Cable Detected to be Not Correctly Inserted

Confidential
2-38
■ Error Code 4300
Head thermistor defective
- Head thermistor detects -20 degree-C or less, or 80 degree-C or more when power
is ON.
■ Error Code 4400
Head driver IC detects abnormal temperature during operation or stand-by.
■ Error Code 4600
Purge count or flushing count overflown.
■ Error Code 4800
Head flat cable detected to be not correctly inserted.
Step Cause Solution
1 Carriage flat cable connection
failure
Reconnect the carriage flat cable.
2 Head thermistor defective Replace the head/carriage unit.
3 Main PCB defective Replace the main PCB.
Step Cause Solution
1 Carriage flat cable connection
failure
Reconnect the carriage flat cable.
2 Head property information not
input
Input the head property information (refer to
Chapter 5, Section 1.3.24 "Updating of Head
Property Information and Backup/Restoration of
Head Calibration Data (Maintenance mode
68)")
3 Head thermistor defective
Head defective
Replace the head/carriage unit.
4 Main PCB defective Replace the main PCB.
Step Cause Solution
1 Ink absorber box or flushing
box full.
Replace ink absorber box or flushing box,
resetting purge counter or flushing counter.
2 Main PCB defective Replace the main PCB.
Step Cause Solution
1 Carriage flat cable connection
failure
Reconnect the carriage flat cable.
2
Head flat cable connection
failure
Reconnect the head flat cable.
3 Carriage PCB defective Replace the carriage PCB ASSY.
4 Head defective Replace the head/carriage unit.
5 Main PCB defective Replace the main PCB.