Brother DCP-J752DW

2-50
Confidential
■ Error Code E3
Wireless LAN MAC address not registered.
■ Error Code E6
An error occurred in the E2PROM of the main PCB.
■ Error Code E9
NFC PCB initialization failed.
■ Error Code EC
LCD unit firmware version mismatch detected.
Unable to print E3
LCD
Step Cause Solution
1 Wireless LAN PCB ASSY
connection failure
Reconnect the wireless LAN PCB ASSY.
2 Wireless LAN PCB ASSY
defective
Replace the wireless LAN PCB ASSY.
3 Main PCB defective Replace the main PCB ASSY.
Unable to print E6
LCD
Step Cause Solution
1 Main PCB defective Replace the main PCB ASSY.
Unable to print E9
LCD
Step Cause Solution
1 NFC PCB harness connection
failure
Reconnect the NFC PCB harness.
2 NFC PCB defective Replace the NFC PCB ASSY.
3 Main PCB defective Replace the main PCB ASSY.
Unable to print EC
LCD
Step Cause Solution
1 LCD PCB harness connection
failure
Reconnect the LCD PCB harness.
2 LCD PCB defective Replace the control panel ASSY.
3 Main PCB defective Replace the main PCB ASSY.