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November 2003 © TOSHIBA TEC 2 - 23 e-STUDIO3511/4511 OUTLINE OF THE MACHINE
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DSP board:
This is the board to mainly control the control panel. The Panel processing CPU detecting the input
from each button and touch panel, and the lighting control circuit for the backlight of the LCD are
mounted. And it relays the control signal of the control panel from the SYS board to the LCD and
KEY board.
KEY board:
This is the board on which each button switch and each LED on the control panel are mounted.
LDR board:
This is the board on which the laser diode and the ASIC are mounted. The laser is emitted based on
the output image data signal from the ASIC on the LGC board.
SNS board:
This is the board on which the light sensor for detecting the radiating position of the laser is mounted.
It outputs the H-sync signal to the PWM (Pulse Width Modulator) on the LGC board.
SFB board:
This is the board on which the circuit pattern is printed. It detects the position of the slide guide of the
bypass unit.
CCL board:
This is the board on which the driver for driving the charger cleaner motor is mounted.
ADU board:
This is the board to relay each signal between the ASIC on the LGC board and the electric parts
(motor, sensor, clutch) in the ADU.
IH board:
This is the board to generate the electric power for driving the IH coil of the fuser unit from the AC
electric power input via the switching power supply. And then it is provided.
DRV board:
This is the board on which the driver for driving the revolver motor, exit motor, and each fan motor are
mounted.
SYS board:
This is the main board taking a leading part in all systems. It consists of the System-CPU, ASIC,
memory (DIMM, Flash ROM, SRAM, NVRAM), RTC (Real Time Clock IC) etc. The System-CPU
controls each ASIC to perform the control of the image processing, image memory (page memory,
main memory, HDD), external interface (RS-232C, IEEE-1284, USB, PCI), NIC, and FAX. And based
on the input data from the control panel, System-CPU communicates with Scanner-CPU on the SLG
board and Engine-CPU on the LGC board, and then issues an operation command to the scanner
and printer engine section.