Sharp AL-800, AL-840, Digital Copier service manual Data Flow Diagram, Printer mode

(2) Printer mode

P1) Print data (compressed data) are sent from the host. (Image data (Data 1 – 8)

P2) Print data are developed by the ASIC and the line memory and converted into the full dot image data and sent to the data select section. (Image data)(VIDEO)

P3) The data are sent through the data select section to the scan- ner (writing) section. (image data) (V DATA)

DATA FLOW DIAGRAM

						P2			P1
		C2		C3			ICU PWB	ASIC
						image data	(VIDEO)		image data
								I/F
	MCU PWB								(Data1~8)
CCD PWB		Image process ASIC
CCD								DRAM
									LSU unit
analog	image data				Data select				Laser
image data		Image
Amplifier	A/D						image data (V DATA)
		process
(CCD OUT)	(CCDD0~7)
				image data(LD)
C1	SRAM	SRAM		DRAM	DRAM	DRAM		C4	P3
				16Mbit	16Mbit	16Mbit
	32kbitx8	32kbitx8
			(SC only) (SC only) (SC only)
	serial data					serial data
Operation panel						(SDATA)
	(OP DATA/KIN1/KIN2)					CPU
						H8S
				CPU BUS
					serial data (EEPD)
		ROM		RAM	EEPROM

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