Canon 3260 manual MT1

CHAPTER 2

Laser/scanner unit									DC controller PCB
		J1001-8			J202-4		+5V		Analog signal in proportion to the laser
		-10			-2	DRVES			intensity is input.
	Laser diode	-1			-11
						/LENBL			"L" to switch the laser ON according to the VDO and
		-2			-10
						/LON			/VDO signals.
		-5			-7
						VDO			"L" to turn the laser ON compulsively.
		-3			-9
						/VDO			The laser is turned ON only when the /LENBL, VDO,
		-4/-7/-9			-3/-5/-8
	Laser driver								and /VDO are "L", "H", and "L" respectively. (LOW-
		J6-3/-4		J206-1/-2					VOLTAGE DIFFERENTIAL signal)
		-2			-3
	BD PCB					/BDI			BD input signal (pulse)
						+5V
		-1			-4		+24VA
		J1-1	-1 J18	-1	J207-7
								+5V
			-7	-7	-1
		-7
	Scanner	-6	-6	-6	-2	/SCNRDY			"L" when the scanner motor reaches the
		-5	-5	-5	-3
	motor					/SCND			prescribed speed.
		-3	-3	-3	-5
						SCNCLK			"L" to drive the scanner motor.
		-2/-4	-2/-4	-2/-4	-4/-6
									Scanner motor reference clock signal.
		J701			J220		+24VB
		-A12/-B12		-A12/-B12
		-A1			-A1	TRFVCNT			Transfer bias drive signal
		-B1			-B1
						/TRFNVD			Transfer negative bias drive signal
		-A2			-A2
						TRFVSNS			Transfer bias monitor signal
		-B2			-B2
						/HRLBD			Fixing roller bias drive signal
		-A3			-A3
						/TRFCCD			Transfer bias constant current drive signal
		-B3			-B3
						/DCHGBD			Discharge bias drive signal
		-A4			-A4
	High-voltage					/TRFCLK			Transfer bias frequency output signal
		-B4			-B4
						/DCHGUP			Discharge bias switch signal
	power
		-A6			-A6
	supply PCB					HVTCLK			High voltage bias frequency output signal
		-A7			-A7
						/DEVACD			Developing AC bias drive signal
		-B7			-B7
						PRIACCLK			Primary AC bias frequency output signal
		-A8			-A8
						DEVACCLK Developing AC bias frequency output signal
		-B8			-B8
						/PRIACD			Primary AC bias drive signal
		-A9			-A9
						/DEVDCD			Developing DC bias drive signal
		-B9			-B9
						/PRIDCD			Primary DC bias drive signal
		-B10			-B10
						DENADJ			Image density adjustment signal
		-A11/-B11		-A11/-B11
		J12-1			J218-1				"L" when the main motor runs normally.
						/MMRDY
		-2			-2
						/MMOTD			"L" to run the main motor.
	MT1	-3/-4			-3/-4
	Main motor					+24VB
		-5/-6			-5/-6

Figure 2-2-4

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