Brother FAX-2840 Service Manual page 65

Error code 44
No Toner
Open the Front Cover, then install the Toner Cartridge.
The new toner sensor detected that the toner cartridge was not set.
<User Check>
• Install the toner cartridge.
Step
Connection failure of the new
1
toner sensor harness
New toner sensor failure
2
3 Main PCB failure
Error code 45 to 4F
These errors do 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.
---
An unidentified error occurred.
<User Check>
• Turn OFF the power switch, and turn it ON again after a while.
Step
1 Main PCB failure
Error code 50
Replace Drum
The number of rotations of the drum unit has reached the life limit. (Printing does not stop.)
<User Check>
• Prepare a new drum unit.
Step
1 Main PCB failure
Cause
Reconnect the new toner sensor harness.
Check the sensor performance following the
procedure in
problem occurs, replace the new toner sensor
PCB ASSY.
Replace the main PCB ASSY.
Cause
Replace the main PCB ASSY.
Cause
Replace the main PCB ASSY.
2-28
Remedy
"Function code 32". If any
Remedy
Remedy
Confidential