110, Vertical copy magnification ratio adjustment | Sharp SF-1020

(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/Africa Optional 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-CM15 External view and internal structure Product Views SF-1020 Operation panel SF-1120 Motors Clutches and solenoids PWB Explained with the SF-1120 and the SF-CM15 POD TCSIlsw MSW Rollers, mirrors, etc Unpacking Unpacking and InstallationInstallation Installing conditions Space around the machine Installation basePower source Grounding wire connection No /3 mirror unit lock release Charger cleaningMain charger unit electrode cleaning Optical system lock release Developing unit setting Developing unit setting Developing 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 installation Removing the rear cover to the main copier units lower tray ING and InstallationOptional one-step paper feed unit SF-CM16 Included parts Plugging 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 unit Remove the tray Set the modeTray paper size selection Described with the SF-1020 Centering the paper Set paper, and change the paper size display Attach the tray Basic operations Descriptions of Each SectionPaper feed section General descriptions Basic composition Developing section Basic operations Optical sectionGeneral description Lens home position sensor Lhps Original table Copy lampMirror Lens fixed focus lens Mirror base drive wire Lens drive wireTemperature fuse Exposure adjustment plate CLV Original size sensingEX1 EX5 CPU Optical system dirt correction This model basic process and structure Copy processPhotoconductor Process diagram CTL CGL Details of image forming processMain Charging Exposure CGL CTL Development Separation TransferCTL Discharging Cleaning Summary Transition of photoconductor surface potentialPhotoconductor drum sensitivity correction Process control function Basic structure Process controlProcess control timing Drum marking General Fusing paper exit sectionBasic composition and functions Basic operation High voltage sectionADU unit SF-1120 only Basic composition Details 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 replacement Lower heat roller replacement Upper separation pawl replacementLower separation pawl replacement Thermistor/thermostat removal Copy lamp replacementMirror base wire replacement and adjustment Optical system No /3 mirror unit mirror base B removal Mirror base wire removal Mirror 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 replacement Procedures 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 copies Ring attachment DB blade replacement Replace every 120K copies Developing unit color identification Cooling fan motor replacementOperation panel/intermediate cabinet Frame major parts Tray size detecting PWB Power unitCooling fan motor Main PWB unit AC power PWB Take-up roller/paper feed roller Multi paper feed unit SF-MF15 option Reverse roller ADUPaper feed roller Paper feed unit SF-CM15, SF-CM16, option Adjustment procedure AdjustmentsDeveloping doctor clearance adjustment Developing magnet roller main pole position adjustment Adjustment items YES 51 50 Adjustment of each sectionLens reference position adjustment No /5 mirror reference position adjustment 110 Vertical copy magnification ratio adjustment Resolution adjustment Focus adjustment No.4/5 mirror adjustment screw Adjustment procedure Horizontal copy magnification ratio adjustment Comparison table of lens values and simulation input values Horizontal skew adjustment Vertical skew adjustment Mirror base rail handle Loosen Exposure balance adjustment Center shift adjustment Copy lead edge adjustment End of scale image Original detecting section Original detecting arm unit adjustment 3 4 5 6 Original detecting level adjustmentA4R LTR Purpose Operating procedureSimulations operating procedure Simulation List of simulations Cassette size switch table Simulation 26-6 Destination setting Details of simulations Full power on Psps WLT LTR INV A4R B5R ADF counter display ← Initial value OFF SEC Secl Seeg SUK SCA PPD4 PPD1PPD2 PPD3 PD3 PD0PD1 PD2 Developer counter clear Display range 8 ∼ No trouble 31 ∼ 35 --- Trouble The sub code is displayed Copying without grid bias correction AE + PE ME + PE Paper transport direction magnification ratio adjustment ADU alignment plate home position adjustment SF-2120 only 30 sec. This function can be cleared User simulation User simulation code table User simulationLED Clearing the self diag display Self DiagnosticsSummary/purpose Operation SF-1120 only LOW High Remedies General Make a copy and adjust Set value recording sheet Memory simulation list Maintenance cycle and maintenance items Maintenance Electrical Section System block diagram JAM System operation when the power is turned onRPL on PSW on RPL OFF Main circuit Block diagram CPU IC6 SC3041K12F FeaturesPin arrangement RAM Internal block diagramDMA Dmac ROM CPU SC3041K12F IC1 pin signal NMI RES ResetMCS CLK OUT Oden O IC8 CXD1095QVDD O CXD1095Q IC8 pin signal PC2 CPEC2 OUT CLR ResetOden Reset PC1 CPFC1 OUT SEL a SEL B SEL C Detector circuit of sensor signalStart/stop control circuit SEL C SEL B SEL a Heater lamp control circuit Load Driver circuit Solenoid, electromagnetic clutchStepping motor drive circuit Operation CW/CCW Reset IC IC13AE Auto Exposure sensor circuit Toner supply motor drive circuit KI0 KI1 Operation panelKI2 CPU Hound AC Circuit EnergyStar circuit description ADU circuit description ADU circuit block diagram ROM RAM ADU CPU IC1 Stby TXDDSR RES ADU motor DDM drive circuit Stepping motor PAM1, PAM2 drive circuit GND