O
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Inf
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BOARD STRUCTURE
SM
1-15
G031/G032
1.8.2 MAJOR COMPONENTS
1. Engine Control Board (ECB)
This is the printer engine control board. It controls the following functions:
•
Engine sequence
•
Machine control, printer engine control
•
Timing control for peripherals
•
Video control
•
Drive control for the sensors, motors, solenoids, and high voltage supply
board
•
PWM control for edge smoothing (PWM is done on the printer control board)
2. Printer Control Board
This is the machine’s main control board. It controls the following functions:
•
IEEE 1284 parallel port
•
Edge smoothing and toner saving
•
Engine control board
•
Control panel board
•
Interfacing with the HDD and NIB
3. LD Drive Board
This is the laser diode drive circuit board.
4. Power Supply Unit (PSU)
Provides dc power to the system and ac power to the fusing lamp.
5. High Voltage Supply Board
Supplies high voltage to the drum charge roller, development roller, and transfer
roller.
6. Fusing Unit
Fuses toner to the paper. The fusing lamp is controlled by the ECB.
7. Control Panel Board
Controls the display panel, the LED, and the touch keypad.
Содержание G031
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