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Sharp SF-1020, SF-1120 service manual 110, Vertical copy magnification ratio adjustment

Models: SF-1120 SF-1020

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(3)Check to confirm the lens value specified on the lens value label.

(4)Insert a screwdriver into hole (P) in the right rear side (paper feed side) of the optical base plate, and adjust the adjustment screw. The scale on the zoom base at section Q in the figure below determines the position of the No. 4/5 mirror cor- responding to the lens value.

<Example> When the lens value is +1.2, loosen the adjustment screw and adjust so that the arrow section of the No. 4/5 mirror drive holder points to the zoom base scale at +1.2.

Turning the adjustment screw clockwise moves the No. 4/5 mirror drive holer arrow section in the (–) direction, and turning it counterclockwise moves the arrow sec- tion in the (+) direction.

No.4/5 sdjustment

screw

No. 4/5 mirror		drive							(shaded portion)
holder arrow		section							Q
Zoom									Q
Zoom							One		scale = 1mm
base
base
	(-) direction					(+) direction

P

C. Vertical copy magnification ratio adjustment

Be sure to check that mirror bases A, B and C are in parallel and that the focus is proper before executing this adjustment.

This adjustment must be performed in the following cases.

•When the lens home position sensor (LHPS) is replaced or its installation position is changed.

•When the lens is replaced.

•When the mirror base is replaced or its installing position is changed.

•When the main PWB is replaced.

•When the EEPROM inside the main PWB is replaced.

<Procedure>

(1)Put a scale on the original table as shown in the figure below.

A4 (11" x 8½") paper

Scale

(2) Make a normal copy (100%) on an A4 (11" ×81⁄2") paper.

(3) Compare the scale image length and the scale length.

(When a 100mm scale is used as the original.)

Original scale

HARDDENCD

STAINLESS

	mm					JAPAN			150
		10	20	100	110	120	130	140
	1/2mm

Shizuoka

Paper feed direction mm	10	20
1/2mm

																																HARDDENCD
																																STAINLESS
				JAPAN																					150
100	110	120			130										140										150

		Shizuoka
Reference	Comparison point	Copy

110

7 – 5

Image 79

Sharp SF-1020, SF-1120 service manual 110, Vertical copy magnification ratio adjustment

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 SF-LS12 Supply partsBrazil/Asia except Hong Kong Middle East/AfricaOptional specifications One-step paper feed unit SF-CM16 Bin staple sorter 10-bin SS Model name SF-S54Staple section Two-step paper feed unit Model name SF-CM15External view and internal structure Product ViewsSF-1020 Operation panelSF-1120 Motors Clutches and solenoidsPWB Explained with the SF-1120 and the SF-CM15 POD TCSIlsw MSWRollers, mirrors, etc Unpacking Unpacking and InstallationInstallation Installing conditionsSpace around the machine Installation basePower source Grounding wire connectionNo /3 mirror unit lock release Charger cleaningMain charger unit electrode cleaning Optical system lock releaseDeveloping unit setting Developing unit settingDeveloping unit level adjustment Accessory installationToner density sensor level adjustment Copy tray installationPage Label attachment Center shift adjustmentLabel attachment Parts packed together Optional two-step paper feed unit SF-CM15 installationRemoving the rear cover to the main copier units lower tray ING and InstallationOptional one-step paper feed unit SF-CM16 Included partsPlugging in the relay harness Placing the main copier unit over the paper feed unitRemoving the lower tray from the main copier unit Attaching the main copier unit and paper feed unitRemove the tray Set the modeTray paper size selection Described with the SF-1020 Centering the paperSet paper, and change the paper size display Attach the trayBasic operations Descriptions of Each SectionPaper feed section General descriptionsBasic composition Developing sectionBasic operations Optical sectionGeneral description Lens home position sensor Lhps Original table Copy lampMirror Lens fixed focus lensMirror base drive wire Lens drive wireTemperature fuse Exposure adjustment plateCLV Original size sensingEX1 EX5 CPU Optical system dirt correctionThis model basic process and structure Copy processPhotoconductor Process diagram CTL CGL Details of image forming processMain Charging ExposureCGL CTL DevelopmentSeparation TransferCTL Discharging CleaningSummary Transition of photoconductor surface potentialPhotoconductor drum sensitivity correction Process control functionBasic structure Process controlProcess control timing Drum markingGeneral Fusing paper exit sectionBasic composition and functions Basic operation High voltage sectionADU unit SF-1120 only Basic compositionDetails 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 Upper heat roller assy removal Fusing sectionFusing unit removal Heater lamp replacementLower heat roller replacement Upper separation pawl replacementLower separation pawl replacement Thermistor/thermostat removal Copy lamp replacementMirror base wire replacement and adjustment Optical systemNo /3 mirror unit mirror base B removal Mirror base wire 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 removal Lens wire replacementProcedures Lens unit installation Lens unit replacementLens removal High voltage section Cleaning/replacement and noteMain charger MC unit Process unit ~0.5 Cleaning/replacement and precautionsProcess section Transfer/separation charger TC/SC unitPage Discharge lamp unit Clean every 50K copies Blank lamp unit Clean every 50K copiesDrum Replace every 50K copies Toner reception seal Replace every 50K copies Cleaner blade Replace every 50K copiesDV side seals F/R replacement Replace every 120K copies Drum separation pawl Replace every 50K copiesRing attachment DB blade replacement Replace every 120K copiesDeveloping unit color identification Cooling fan motor replacementOperation panel/intermediate cabinet Frame major partsTray size detecting PWB Power unitCooling fan motor Main PWB unit AC power PWBTake-up roller/paper feed roller Multi paper feed unit SF-MF15 optionReverse roller ADUPaper feed roller Paper feed unit SF-CM15, SF-CM16, option Adjustment procedure AdjustmentsDeveloping doctor clearance adjustment Developing magnet roller main pole position adjustmentAdjustment items YES 51 50 Adjustment of each sectionLens reference position adjustment No /5 mirror reference position adjustment110 Vertical copy magnification ratio adjustmentResolution adjustment Focus adjustment No.4/5 mirror adjustment screw Adjustment procedure Horizontal copy magnification ratio adjustmentComparison table of lens values and simulation input values Horizontal skew adjustment Vertical skew adjustmentMirror base rail handle Loosen Exposure balance adjustment Center shift adjustmentCopy lead edge adjustment End of scale image Original detecting section Original detecting arm unit adjustment3 4 5 6 Original detecting level adjustmentA4R LTR Purpose Operating procedureSimulations operating procedure SimulationList of simulations Cassette size switch table Simulation 26-6 Destination settingDetails of simulations Full power on Psps WLT LTR INV A4R B5RADF counter display ← Initial value OFF SEC Secl Seeg SUK SCAPPD4 PPD1PPD2 PPD3PD3 PD0PD1 PD2Developer counter clear Display range 8 ∼ No trouble 31 ∼ 35 --- Trouble The sub code is displayed Copying without grid bias correction AE + PE ME + PEPaper transport direction magnification ratio adjustment ADU alignment plate home position adjustment SF-2120 only 30 sec. This function can be cleared User simulationUser simulation code table User simulationLED Clearing the self diag display Self DiagnosticsSummary/purpose OperationSF-1120 only LOW HighRemedies GeneralMake a copy and adjust Set value recording sheet Memory simulation list Maintenance cycle and maintenance items MaintenanceElectrical Section System block diagramJAM System operation when the power is turned onRPL on PSW on RPL OFF Main circuit Block diagramCPU IC6 SC3041K12F FeaturesPin arrangement RAM Internal block diagramDMA Dmac ROMCPU SC3041K12F IC1 pin signal NMI RES ResetMCS CLK OUTOden O IC8 CXD1095QVDD O CXD1095Q IC8 pin signal PC2 CPEC2 OUT CLR ResetOden Reset PC1 CPFC1 OUTSEL a SEL B SEL C Detector circuit of sensor signalStart/stop control circuit SEL C SEL B SEL aHeater lamp control circuit Load Driver circuit Solenoid, electromagnetic clutchStepping motor drive circuit OperationCW/CCW Reset IC IC13AE Auto Exposure sensor circuit Toner supply motor drive circuitKI0 KI1 Operation panelKI2 CPU Hound AC Circuit EnergyStar circuit descriptionADU circuit description ADU circuit block diagramROM RAM ADU CPU IC1Stby TXDDSR RESADU motor DDM drive circuit Stepping motor PAM1, PAM2 drive circuitGND