17 January, 2003 OVERVIEW
6-5
Detailed
Descriptions
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.
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