
17 January, 2003
OVERVIEW
6-5
D
etailed
D
escr
iptions
Descriptions
BCU (Base Engine Control Unit):
The BCU has three CPUs (Main, MUSIC, and DSP). The CPUs control the
following functions:
Main CPU
•
Engine sequence
•
Machine and printer engine operation
•
Timing for peripherals
•
High voltage supply, laser, and fusing
•
Sensors, drive board, and solenoids
•
Motors
MUSIC (Mirror Unit for Skew and Interval Correction) CPU
•
TD sensor
•
Line position adjustment
•
Memory chip on the toner cartridge
DSP (Digital Signal Processor)
•
Line position adjustment
Controller:
The controller handles the following functions:
•
Printer-to-host interface
•
Operation panel interface
•
Network interface
•
Interfacing and control of the optional USB, Bluetooth, IEEE1394,
IEEE802.11b (wireless LAN), HDD, and DRAM DIMM
LD Drive Board:
This is the laser diode drive circuit board.
DRB:
The DRB (driver board) controls the paper feed motor, development motors
(color/black), drum drive motors (color/black), transfer unit drive motor, and transfer
voltage.
IEEE1394 Interface (Option):
This allows computers to connect to this printer using an IEEE1394 interface.