Boards
D014/D015/D078/D079 6-6 SM
HDD (Hard Disk Drives)
This board stores all the temporary files for job processing and all permanent files for the
document server.
PSU (Power Supply Unit)
Supplies DC to the machine, and contains the AC supply that controls the power to the
fusing lamps.
6.3.2 IPU
SBU (Sensor Board Unit)
SBU
The SBU does the following functions:
Black level correction
White level correction
Color balance calibration
Creating the SBU test pattern