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Sharp SF-1120, SF-1020 service manual Internal block diagram, Dmac ROM, Ram, Itu

Models: SF-1120 SF-1020

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4Internal block diagram

Vcc Vcc Vcc Vss Vss Vss Vss Vss Vss

P37/D15 P36/D14 P35/D13 P34/D12 P33/D11 P32/D10 P31/D9 P30/D8

P47/D7 P46/D6 P45/D5 P44/D4 P43/D3 P42/D2 P41/D1 P40/D0

MD2

MD1

MD0

EXTAL

XTAL Φ

STBY

RES

RES0

NMI

	P66/LWR
	P65/HWR	6
	P64/RD	6
	P64/RD	Port
	P62/BACK	Port
	P63/AS
	P61/BREQ
	P60/WAIT

	P84/CS0	8
	P83/CS1/IRQ3	8
	P83/CS1/IRQ3	Port
	P82/CS2/IRQ2
	P81/CS3/IRQ1
	P80/RFSH/IRQ0

	Port 3		Port 4
	Address bus
	Address bus (Upper)
	Address bus (Lower)
Clock oscillator	HS/300H CPU
	HS/300H CPU
Interruption		contoller
Interruption
controller	DMA
	DMA
	contorller	Bus
	(DMAC)	Bus
	(DMAC)
ROM*
(Mask ROM)
	Refresh
	controller
RAM
	Watchdog timer
16-bit integrated	serial communication
timer pulse unit	serial communication
(ITU)	interface
	(SCI) x 2ch
Programmable	A/D convertor
timing pattern	D/A convertor
controller (TPC)	D/A convertor

	5	PS3/A19
	Port	PS2/A18
	Port	PS1/A17
		PS1/A17
		PS0/A16

		P27/A15
		P26/A14
	2	P25/A13
	Port	P24/A12
	Port	P23/A11
		P23/A11
		P22/A10
		P21/A9
		P20/A8

		P17/A7
		P16/A6
	1	P15/A5
	Port	P14/A4
	Port	P13/A3
		P13/A3
		P12/A2
		P11/A1
		P10/A0
		P95/SCK1/IRQ5
	9	P94/SCK0/IRQ4
	Port	P93/RXD1
	Port	P92/RXD0
		P92/RXD0
		P91/TXD1
		P90/TXD0

*ROM capacity

H8/3042 64KByte

H8/3041 48KByte

H8/3040 32KByte

Port B

PB7/TP15/DREQ1/ADTRG

PB6/TP14/DREQ0

PB5/TP13/TOCXB4

PB4/TP12/TOCXA4

PB3/TP11/TIOCA4

PB2/TP10/TIOCB4

PB1/TP9/TIOCB3

PB0/TP8/TIOCA3

Port A

PA7/TP7/TIOCB2/A20

PA6/TP6/TIOCA2/A21

PA5/TP5/TIOCB1/A22

PA4/TP4/TIOCA1/A23

PA3/TP3/TIOCB0/TCLKD

PA2/TP2/TIOCA0/TCLKC

PA1/TP1/TEND1/TCLKB

PA0/TP0/TEND0/TCLKA

	Port 7
A Vcc A Vss Vref	P77/AN7/DA1 P76/AN6/DA0 P75/AN5 P74/AN4 P73/AN3 P72/AN2 P71/AN1 P70/AN0

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Image 124

Sharp SF-1120, SF-1020 service manual Internal block diagram, Dmac ROM, Ram, Itu

Contents

SF-1020 SF-1120 Contents Lower heat roller replacement Electrical Section System configuration options Product featuresProduct Outline Basic specifications Product SpecificationsADU SF-CM15 Description of each sectionSF-CM16 Supply parts Brazil/Asia except Hong KongMiddle East/Africa SF-LS12Optional specifications Bin staple sorter 10-bin SS Model name SF-S54 Staple sectionTwo-step paper feed unit Model name SF-CM15 One-step paper feed unit SF-CM16Product Views External view and internal structureOperation panel SF-1020SF-1120 Clutches and solenoids MotorsPWB Explained with the SF-1120 and the SF-CM15 TCS IlswMSW PODRollers, mirrors, etc Unpacking and Installation InstallationInstalling conditions UnpackingInstallation base Power sourceGrounding wire connection Space around the machineCharger cleaning Main charger unit electrode cleaningOptical system lock release No /3 mirror unit lock releaseDeveloping unit setting Developing unit settingAccessory installation Toner density sensor level adjustmentCopy tray installation Developing unit level adjustmentPage Label attachment Center shift adjustmentLabel attachment Optional two-step paper feed unit SF-CM15 installation Parts packed togetherING and Installation Optional one-step paper feed unit SF-CM16Included parts Removing the rear cover to the main copier units lower trayPlacing the main copier unit over the paper feed unit Removing the lower tray from the main copier unitAttaching the main copier unit and paper feed unit Plugging in the relay harnessSet the mode Tray paper size selection Described with the SF-1020Centering the paper Remove the trayAttach the tray Set paper, and change the paper size displayDescriptions of Each Section Paper feed sectionGeneral descriptions Basic operationsDeveloping section Basic compositionBasic operations Optical sectionGeneral description Original table Copy lamp MirrorLens fixed focus lens Lens home position sensor LhpsLens drive wire Temperature fuseExposure adjustment plate Mirror base drive wireCLV Original size sensingEX1 EX5 Optical system dirt correction CPUThis model basic process and structure Copy processPhotoconductor Process diagram Details of image forming process Main ChargingExposure CTL CGLDevelopment CGL CTLSeparation TransferCTL Cleaning DischargingTransition of photoconductor surface potential Photoconductor drum sensitivity correctionProcess control function SummaryProcess control Process control timingDrum marking Basic structureGeneral Fusing paper exit sectionBasic composition and functions High voltage section ADU unit SF-1120 onlyBasic composition Basic operationDetails of operation Paper feed unit Disassembly and AssemblyPaper feed roller assy removal Separation roller PS front roller assyPaper feed roller, take-up roller Transport unit Transport belt Fusing section Fusing unit removalHeater lamp replacement Upper heat roller assy removalLower heat roller replacement Upper separation pawl replacementLower separation pawl replacement Copy lamp replacement Mirror base wire replacement and adjustmentOptical system Thermistor/thermostat removalMirror base wire removal No /3 mirror unit mirror base B removalMirror base wire stretching No /3 mirror unit mirror base B assemblyMirror base wire fixing Page No /5 mirror unit mirror base C replacement Copy lamp unit installation Mirror base a positioningNo /5 mirror removal No /5 mirror unit assembly Lens wire replacement Lens wire removalProcedures Lens unit installation Lens unit replacementLens removal High voltage section Cleaning/replacement and noteMain charger MC unit ~0.5 Cleaning/replacement and precautions Process sectionTransfer/separation charger TC/SC unit Process unitPage Discharge lamp unit Clean every 50K copies Blank lamp unit Clean every 50K copiesDrum Replace every 50K copies Cleaner blade Replace every 50K copies DV side seals F/R replacement Replace every 120K copiesDrum separation pawl Replace every 50K copies Toner reception seal Replace every 50K copiesDB blade replacement Replace every 120K copies Ring attachmentCooling fan motor replacement Operation panel/intermediate cabinetFrame major parts Developing unit color identificationTray size detecting PWB Power unitCooling fan motor AC power PWB Main PWB unitMulti paper feed unit SF-MF15 option Take-up roller/paper feed rollerReverse roller ADUPaper feed roller Paper feed unit SF-CM15, SF-CM16, option Adjustments Developing doctor clearance adjustmentDeveloping magnet roller main pole position adjustment Adjustment procedureAdjustment items YES Adjustment of each section Lens reference position adjustmentNo /5 mirror reference position adjustment 51 50Vertical copy magnification ratio adjustment 110Resolution adjustment Focus adjustment No.4/5 mirror adjustment screw Horizontal copy magnification ratio adjustment Adjustment procedureComparison table of lens values and simulation input values Vertical skew adjustment Horizontal skew adjustmentMirror base rail handle Loosen Center shift adjustment Exposure balance adjustmentCopy lead edge adjustment End of scale image Original detecting arm unit adjustment Original detecting section3 4 5 6 Original detecting level adjustmentA4R LTR Operating procedure Simulations operating procedureSimulation PurposeList of simulations Simulation 26-6 Destination setting Cassette size switch tableDetails of simulations Full power on Psps A4R B5R WLT LTR INVADF counter display ← Initial value SEC Secl Seeg SUK SCA OFFPPD1 PPD2PPD3 PPD4PD0 PD1PD2 PD3Developer counter clear Display range 8 ∼ No trouble 31 ∼ 35 --- Trouble The sub code is displayed Copying without grid bias correction ME + PE AE + PEPaper transport direction magnification ratio adjustment ADU alignment plate home position adjustment SF-2120 only User simulation 30 sec. This function can be clearedUser simulation code table User simulationLED Self Diagnostics Summary/purposeOperation Clearing the self diag displaySF-1120 only High LOWGeneral RemediesMake a copy and adjust Set value recording sheet Memory simulation list Maintenance Maintenance cycle and maintenance itemsSystem block diagram Electrical SectionJAM System operation when the power is turned onRPL on PSW on RPL OFF Block diagram Main circuitCPU IC6 SC3041K12F FeaturesPin arrangement Internal block diagram DMADmac ROM RAMCPU SC3041K12F IC1 pin signal RES Reset MCSCLK OUT NMIOden O IC8 CXD1095QVDD O CXD1095Q IC8 pin signal CLR Reset Oden ResetPC1 CPFC1 OUT PC2 CPEC2 OUTDetector circuit of sensor signal Start/stop control circuitSEL C SEL B SEL a SEL a SEL B SEL CHeater lamp control circuit Driver circuit Solenoid, electromagnetic clutch Stepping motor drive circuitOperation LoadReset IC IC13 AE Auto Exposure sensor circuitToner supply motor drive circuit CW/CCWKI0 KI1 Operation panelKI2 CPU EnergyStar circuit description Hound AC CircuitADU circuit block diagram ADU circuit descriptionADU CPU IC1 ROM RAMTXD DSRRES StbyStepping motor PAM1, PAM2 drive circuit ADU motor DDM drive circuitGND