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Sharp SF-1120, SF-1020 service manual ADU circuit description, ADU circuit block diagram

Models: SF-1120 SF-1020

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SUB DC	VH		1
			1

PWB	VB		2
	VB

	IC4	VD	3
	IC4		3

2

CLUTCH

(1) ADU circuit block diagram

(14) ADU circuit description

12 – 17

DPHPS1

DPHPS2

DPED1

DPED2

PAPER SIZE AB ONLY

DPPD1

DPOD

DPTD

2ADU SENCER PWB

DPHPS1
DPHPS2
DPED1
DPED2	IC6
SPPD1
DPOD
DPTD

D-TXD

D-DTR

D-RES

D-DSR

D-RXD

IC5

MAIN

PWB

3					DRRC
3					DPFC
			DRRC
			DPFC	IC3
				IC3
IC 1				CLUTCH	PAM2 A
		DO-D7	IC9	CLUTCH	PAM2/A
		DO-D7	IC9	STEPPER	PAM2 B
		/PAM-OUT		DRIVER	PAM2/B
		/WH	DATA		2
CPU			LUTCH		2
CPU
H8/3292					PAM1 A
				IC2	PAM1 A
				IC2	PAM1/A
					PAM1/A
					PAM1 B
					PAM1/B
				STEPPER
			DDM_PWM	DRIVER	2
			DDM_PWM		2
			DDM_DIR
A	D	-		DDM_PWM
0	O	R		DDM_DIR
0	O	D		DDM_DIR
-	-	D
A	D				DDM1
1	7			IC8	DDM1
5				IC8	DDM2
				Q1-
				Q4
ROM				DC MOTER
ROM		3		DRIVER
				1

DRRC

DPFC

STEPPER

PAM2

STEPPER

PAM1

DDM

Image 136

Sharp SF-1120, SF-1020 service manual ADU circuit description, ADU circuit block diagram

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