Process diagram | Sharp SF-1120, SF-1020 specs

(2) Process diagram

Mirror lens

Original

Copy lamp

High voltage unit
Main corona unit	Charging	Exposure
Discharge lamp	Discharging	Discharge
		Development

Blank lamp

Toner

High voltage unit

Cleaning blade

Cleaning

Waste toner collection Separation

Developer

Manual paper feed

Paper exit

Fusing

Heat roller

Drum upper image/paper synchronization

Separation

Transfer

Separation corona unit

Transfer charger

	Resist roller	Paper feed roller	Paper cassette
		Transportroller

Heater lamp

Main corona unit

Discharge lamp

Cleaning blade

High voltage unit

High voltage unit

Blank lamp

Developer unit

MG roller

Resist roller

Image forming process

Paper transport path

Seperation pawl

Seperation corona unit Transfer corona unit

5 – 9

Image 38

Sharp SF-1120, SF-1020 service manual Process diagram

Contents

SF-1020 SF-1120 Contents Lower heat roller replacement Electrical Section Product Outline Product featuresSystem configuration options ADU Product SpecificationsBasic specifications SF-CM16 Description of each sectionSF-CM15 Middle East/Africa Supply partsBrazil/Asia except Hong Kong SF-LS12 Optional specifications Two-step paper feed unit Model name SF-CM15 Bin staple sorter 10-bin SS Model name SF-S54Staple section One-step paper feed unit SF-CM16 Product Views External view and internal structure Operation panel SF-1020 SF-1120 Clutches and solenoids Motors PWB Explained with the SF-1120 and the SF-CM15 MSW TCSIlsw POD Rollers, mirrors, etc Installing conditions Unpacking and InstallationInstallation Unpacking Grounding wire connection Installation basePower source Space around the machine Optical system lock release Charger cleaningMain charger unit electrode cleaning No /3 mirror unit lock release Developing unit setting Developing unit setting Copy tray installation Accessory installationToner density sensor level adjustment Developing unit level adjustmentPage Label attachment Center shift adjustmentLabel attachment Optional two-step paper feed unit SF-CM15 installation Parts packed together Included parts ING and InstallationOptional one-step paper feed unit SF-CM16 Removing the rear cover to the main copier units lower tray Attaching the main copier unit and paper feed unit Placing the main copier unit over the paper feed unitRemoving the lower tray from the main copier unit Plugging in the relay harness Centering the paper Set the modeTray paper size selection Described with the SF-1020 Remove the tray Attach the tray Set paper, and change the paper size display General descriptions Descriptions of Each SectionPaper feed section Basic operations Developing section Basic composition General description Optical sectionBasic operations Lens fixed focus lens Original table Copy lampMirror Lens home position sensor Lhps Exposure adjustment plate Lens drive wireTemperature fuse Mirror base drive wire EX1 EX5 Original size sensingCLV Optical system dirt correction CPU Photoconductor Copy processThis model basic process and structure Process diagram Exposure Details of image forming processMain Charging CTL CGL Development CGL CTL CTL TransferSeparation Cleaning Discharging Process control function Transition of photoconductor surface potentialPhotoconductor drum sensitivity correction Summary Drum marking Process controlProcess control timing Basic structure Basic composition and functions Fusing paper exit sectionGeneral Basic composition High voltage sectionADU unit SF-1120 only Basic operation Details of operation Paper feed roller assy removal Disassembly and AssemblyPaper feed unit Paper feed roller, take-up roller PS front roller assySeparation roller Transport unit Transport belt Heater lamp replacement Fusing sectionFusing unit removal Upper heat roller assy removal Lower separation pawl replacement Upper separation pawl replacementLower heat roller replacement Optical system Copy lamp replacementMirror base wire replacement and adjustment Thermistor/thermostat removal Mirror base wire removal No /3 mirror unit mirror base B removal Mirror base wire fixing No /3 mirror unit mirror base B assemblyMirror base wire stretching Page No /5 mirror removal Copy lamp unit installation Mirror base a positioningNo /5 mirror unit mirror base C replacement No /5 mirror unit assembly Lens wire replacement Lens wire removal Procedures Lens removal Lens unit replacementLens unit installation Main charger MC unit Cleaning/replacement and noteHigh voltage section Transfer/separation charger TC/SC unit ~0.5 Cleaning/replacement and precautionsProcess section Process unitPage Drum Replace every 50K copies Blank lamp unit Clean every 50K copiesDischarge lamp unit Clean every 50K copies Drum separation pawl Replace every 50K copies Cleaner blade Replace every 50K copiesDV side seals F/R replacement Replace every 120K copies Toner reception seal Replace every 50K copies DB blade replacement Replace every 120K copies Ring attachment Frame major parts Cooling fan motor replacementOperation panel/intermediate cabinet Developing unit color identification Cooling fan motor Power unitTray size detecting PWB AC power PWB Main PWB unit Multi paper feed unit SF-MF15 option Take-up roller/paper feed roller Paper feed roller ADUReverse roller Paper feed unit SF-CM15, SF-CM16, option Developing magnet roller main pole position adjustment AdjustmentsDeveloping doctor clearance adjustment Adjustment procedure Adjustment items YES No /5 mirror reference position adjustment Adjustment of each sectionLens reference position adjustment 51 50 Vertical copy magnification ratio adjustment 110 Resolution adjustment Focus adjustment No.4/5 mirror adjustment screw Horizontal copy magnification ratio adjustment Adjustment procedure Comparison table of lens values and simulation input values Vertical skew adjustment Horizontal skew adjustment Mirror base rail handle Loosen Center shift adjustment Exposure balance adjustment Copy lead edge adjustment End of scale image Original detecting arm unit adjustment Original detecting section A4R LTR Original detecting level adjustment3 4 5 6 Simulation Operating procedureSimulations operating procedure Purpose List of simulations Simulation 26-6 Destination setting Cassette size switch table Details of simulations Full power on Psps A4R B5R WLT LTR INV ADF counter display ← Initial value SEC Secl Seeg SUK SCA OFF PPD3 PPD1PPD2 PPD4 PD2 PD0PD1 PD3 Developer counter clear Display range 8 ∼ No trouble 31 ∼ 35 --- Trouble The sub code is displayed Copying without grid bias correction ME + PE AE + PE Paper transport direction magnification ratio adjustment ADU alignment plate home position adjustment SF-2120 only User simulation 30 sec. This function can be cleared LED User simulationUser simulation code table Operation Self DiagnosticsSummary/purpose Clearing the self diag display SF-1120 only High LOW General Remedies Make a copy and adjust Set value recording sheet Memory simulation list Maintenance Maintenance cycle and maintenance items System block diagram Electrical Section RPL on PSW on RPL OFF System operation when the power is turned onJAM Block diagram Main circuit Pin arrangement FeaturesCPU IC6 SC3041K12F Dmac ROM Internal block diagramDMA RAM CPU SC3041K12F IC1 pin signal CLK OUT RES ResetMCS NMI VDD O IC8 CXD1095QOden O CXD1095Q IC8 pin signal PC1 CPFC1 OUT CLR ResetOden Reset PC2 CPEC2 OUT SEL C SEL B SEL a Detector circuit of sensor signalStart/stop control circuit SEL a SEL B SEL C Heater lamp control circuit Operation Driver circuit Solenoid, electromagnetic clutchStepping motor drive circuit Load Toner supply motor drive circuit Reset IC IC13AE Auto Exposure sensor circuit CW/CCW KI2 CPU Operation panelKI0 KI1 EnergyStar circuit description Hound AC Circuit ADU circuit block diagram ADU circuit description ADU CPU IC1 ROM RAM RES TXDDSR Stby Stepping motor PAM1, PAM2 drive circuit ADU motor DDM drive circuit GND