Details of operation | Sharp SF-1020, SF-1120 specification

2

DPTD

(DDM rotary encoder sensor)

5 -1

3 6

10

4 9

8

7

5 -2

1

1

DPHPS1

(Alignment plate home position sensor)

2) Details of operation

1The alignment plate and the rear edge plate detect the home positions, and moves to the paper size position. (ADU motor 1, 2, ON)

2Paper exit, reverse unit operation (ADU gate solenoid ON)

3Rollers in the ADU rotate in the direction of paper entry. (ADU drive motor ON)

4ADU paper entry detection (ADU paper entry/exit sensors 1, 2 ON)

5ADU paper presence detection (ADU paper sensors 1, 2 ON) (5-1 is used only in the AB series.)

6Rollers in the ADU rotate in the direction of paper exit. (ADU drive motor ON)

7Holding plate operation (Take-up clutch ON)

8Take-up roller. paper feed roller rotation (Paper feed clutch ON)

9ADU paper feed detection (ADU paper entry, exit sensor ON)

FADU paper transport detection (ADU transport sensor ON)

ADU sensor list

Signal name	Name	Type	Operation, function

DPHPS1	Alignment plate home position sensor	Transmission sensor	LOW at home position

DPHPS2	Rear edge plate home position sensor	Transmission sensor	LOW at home position

DPED1	Paper sensor 1	Transmission sensor	HIGH with paper present

DPPD1	Paper entry sensor	Transmission sensor	HIGH with paper present

DPED2	Paper sensor 2	Transmission sensor	HIGH with paper present

DPOD	Paper exit sensor	Transmission sensor	HIGH with paper present

DPTD	DDM rotary encoder sensor	Transmission sensor	Motor rotation detection

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Sharp SF-1020, SF-1120 service manual Details of operation

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 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 General description Optical sectionBasic operations Lens home position sensor Lhps Original table Copy lampMirror Lens fixed focus lens Mirror base drive wire Lens drive wireTemperature fuse Exposure adjustment plate EX1 EX5 Original size sensingCLV CPU Optical system dirt correction Photoconductor Copy processThis model basic process and structure Process diagram CTL CGL Details of image forming processMain Charging Exposure CGL CTL Development CTL TransferSeparation Discharging Cleaning Summary Transition of photoconductor surface potentialPhotoconductor drum sensitivity correction Process control function Basic structure Process controlProcess control timing Drum marking Basic composition and functions Fusing paper exit sectionGeneral Basic operation High voltage sectionADU unit SF-1120 only Basic composition 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 Upper heat roller assy removal Fusing sectionFusing unit removal Heater lamp replacement Lower separation pawl replacement Upper separation pawl replacementLower heat roller 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 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 removal Lens wire replacement Procedures Lens removal Lens unit replacementLens unit installation Main charger MC unit Cleaning/replacement and noteHigh voltage section Process unit ~0.5 Cleaning/replacement and precautionsProcess section Transfer/separation charger TC/SC unitPage Drum Replace every 50K copies Blank lamp unit Clean every 50K copiesDischarge lamp unit Clean 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 Cooling fan motor Power unitTray size detecting PWB Main PWB unit AC power PWB Take-up roller/paper feed roller Multi paper feed unit SF-MF15 option Paper feed roller ADUReverse 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 A4R LTR Original detecting level adjustment3 4 5 6 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 LED User simulationUser simulation code table 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 RPL on PSW on RPL OFF System operation when the power is turned onJAM Main circuit Block diagram Pin arrangement FeaturesCPU IC6 SC3041K12F RAM Internal block diagramDMA Dmac ROM CPU SC3041K12F IC1 pin signal NMI RES ResetMCS CLK OUT VDD O IC8 CXD1095QOden 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 KI2 CPU Operation panelKI0 KI1 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