Brother DCP-9055CDN Service Manual page 129

■ Error code D0
---
Touch panel initialization failure.
Step
1 Harness connection failure of
LCD unit
2 LCD unit failure
3 Main PCB failure
■ Error code D1
Print Unable D1
See Troubleshooting and routine maintenance chapter in User's Guide.
Modem initialization failed.
<User Check>
- Turn OFF and ON the power and check if the machine recovers.
Step
1 NCU PCB failure
2 Main PCB failure
■ Error code D2-DC
Machine Error **(D2-DC)
Modem error.
This error does not usually occur in the normal use. The conceivable causes are noise around
the installation site, fluctuation of the power supply voltage, and failures in the software.
<User Check>
- Turn OFF the power switch, and turn it ON again after a while.
Step
1 Main PCB failure
Cause
Cause
Cause
2-91
Remedy
Check the harness connection of the
LCD unit and reconnect it.
Replace the LCD unit.
Replace the main PCB ASSY.
Remedy
Replace the NCU PCB ASSY.
Replace the main PCB ASSY.
Remedy
Replace the main PCB ASSY.
Confidential