Brother DCP-9040CN Service Manual page 26

Error code 99 (DCP-9042CDN/ MFC-9450CDN only)
Size Error DX
Press Cancel. Specify the correct paper and load the same size paper
as the Printer driver setting.
Specified paper size is not supported for duplex printing (DX).
User Check
- Check if the selected paper is supported for duplex printing.
- Check the size setting of the tray to feed paper.
Error code 9B
(* This error can be found out only in
Print Unable 9B
Request on developing bias voltage adjustment
User Check
- The machine starts implementing the developing bias voltage adjustment automatically
when it enters the standby status.
Error code 9C
(* This error can be found out only in
Print Unable 9C
Request on auto color registration
User Check
- The machine starts implementing color registration automatically when it enters the standby
status.
Error code C7
Out of Memory
Add more Memory.
Insufficient DIMM memory
User Check
- Install additional DIMM memory.
Error code C9
DIMM Error
Make sure that the DIMM is inserted correctly.
Defective DIMM is installed.
User Check
- Check if the DIMM is installed correctly.
- Replace the DIMM with a new one.
"Maintenance mode
"Maintenance mode
1-7
82".)
82".)
Confidential