Sharp SF-1020, SF-1120 specification

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3Fix the mirror base wire to the pulley with the mirror base wire fixing screw.

4Return the 9th winding tip of the mirror base wire to the original position. (Perform the same procedure for the front frame side and the rear frame side.)

(Note) After replacing the mirror base drive wire, perform the vertical skew adjustment, the focus adjustment, and the horizontal skew adjustment.

3)No. 2/3 mirror unit (mirror base B) installation (Mirror base B positioning)

This is to adjust the parallelism of mirror base B and the drum surface and the original surface.

This adjustment must be performed in the following cases:

•When the mirror base drive wire is replaced.

•When mirror base A or mirror base B is replaced.

1Manually turn the mirror base drive pulley to bring the mirror base B in contact with the mirror base positioning plate. If the front side and the rear side of the mirror base B make contact with the mirror base positioning plate simultaneously, the parallelism of the mirror base B is proper, and there is no further adjustment.

Mirror base positioning plate

No.2/3 mirror unit

2If the parallelism of the mirror base B is improper as shown in the figure below (one side of the mirror base B is in contact with the positioning plate and the other side is not in contact), perform the following procedure.

3Loosen the mirror base drive pulley fixing screw on the side where the mirror base B is not in contact with the positioning plate.

4Manually rotate the mirror base drive pulley on the side where the mirror base B is not in contact with the positioning plate to bring the mirror base B into contact with the positioning plate.

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5Tighten the mirror base drive pulley fixing screw.

6Manually rotate the mirror base drive pulley to separate the mirror base B from the mirror base positioning plate once, then bring it into contact with the positioning plate.

Check that the front side and the rear side of the mirror base B make contact with the positioning plate simultaneously.

7If the condition of 6 is not satisfied, repeat procedures 3 through 6 until the condition is satisfied.

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Sharp SF-1020, SF-1120 service manual

Contents

SF-1020 SF-1120 Contents Lower heat roller replacement Electrical Section Product features System configuration optionsProduct Outline Product Specifications Basic specificationsADU Description of each section SF-CM15SF-CM16 Brazil/Asia except Hong Kong Supply partsMiddle East/Africa SF-LS12 Optional specifications Staple section Bin staple sorter 10-bin SS Model name SF-S54Two-step paper feed unit Model name SF-CM15 One-step paper feed unit SF-CM16 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 Ilsw TCSMSW POD Rollers, mirrors, etc Installation Unpacking and InstallationInstalling conditions Unpacking Power source Installation baseGrounding wire connection Space around the machine Main charger unit electrode cleaning Charger cleaningOptical system lock release No /3 mirror unit lock release Developing unit setting Developing unit setting Toner density sensor level adjustment Accessory installationCopy tray installation Developing unit level adjustmentPage Center shift adjustment Label attachmentLabel attachment Parts packed together Optional two-step paper feed unit SF-CM15 installation Optional one-step paper feed unit SF-CM16 ING and InstallationIncluded parts Removing the rear cover to the main copier units lower tray Removing the lower tray from the main copier unit Placing the main copier unit over the paper feed unitAttaching the main copier unit and paper feed unit Plugging in the relay harness Tray paper size selection Described with the SF-1020 Set the modeCentering the paper Remove the tray Set paper, and change the paper size display Attach the tray Paper feed section Descriptions of Each SectionGeneral descriptions Basic operations Basic composition Developing section Optical section Basic operationsGeneral description Mirror Original table Copy lampLens fixed focus lens Lens home position sensor Lhps Temperature fuse Lens drive wireExposure adjustment plate Mirror base drive wire Original size sensing CLVEX1 EX5 CPU Optical system dirt correction Copy process This model basic process and structurePhotoconductor Process diagram Main Charging Details of image forming processExposure CTL CGL CGL CTL Development Transfer SeparationCTL Discharging Cleaning Photoconductor drum sensitivity correction Transition of photoconductor surface potentialProcess control function Summary Process control timing Process controlDrum marking Basic structure Fusing paper exit section GeneralBasic composition and functions ADU unit SF-1120 only High voltage sectionBasic composition Basic operation Details of operation Disassembly and Assembly Paper feed unitPaper feed roller assy removal PS front roller assy Separation rollerPaper feed roller, take-up roller Transport unit Transport belt Fusing unit removal Fusing sectionHeater lamp replacement Upper heat roller assy removal Upper separation pawl replacement Lower heat roller replacementLower separation pawl replacement Mirror base wire replacement and adjustment Copy lamp replacementOptical system Thermistor/thermostat removal No /3 mirror unit mirror base B removal Mirror base wire removal No /3 mirror unit mirror base B assembly Mirror base wire stretchingMirror base wire fixing Page Copy lamp unit installation Mirror base a positioning No /5 mirror unit mirror base C replacementNo /5 mirror removal No /5 mirror unit assembly Lens wire removal Lens wire replacement Procedures Lens unit replacement Lens unit installationLens removal Cleaning/replacement and note High voltage sectionMain charger MC unit Process section ~0.5 Cleaning/replacement and precautionsTransfer/separation charger TC/SC unit Process unitPage Blank lamp unit Clean every 50K copies Discharge lamp unit Clean every 50K copiesDrum Replace every 50K copies DV side seals F/R replacement Replace every 120K copies Cleaner blade Replace every 50K copiesDrum separation pawl Replace every 50K copies Toner reception seal Replace every 50K copies Ring attachment DB blade replacement Replace every 120K copies Operation panel/intermediate cabinet Cooling fan motor replacementFrame major parts Developing unit color identification Power unit Tray size detecting PWBCooling fan motor Main PWB unit AC power PWB Take-up roller/paper feed roller Multi paper feed unit SF-MF15 option ADU Reverse rollerPaper feed roller Paper feed unit SF-CM15, SF-CM16, option Developing doctor clearance adjustment AdjustmentsDeveloping magnet roller main pole position adjustment Adjustment procedure Adjustment items YES Lens reference position adjustment Adjustment of each sectionNo /5 mirror reference position adjustment 51 50 110 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 Original detecting level adjustment 3 4 5 6A4R LTR Simulations operating procedure Operating procedureSimulation Purpose 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 PPD2 PPD1PPD3 PPD4 PD1 PD0PD2 PD3 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 User simulation code tableLED Summary/purpose Self DiagnosticsOperation Clearing the self diag display 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 System operation when the power is turned on JAMRPL on PSW on RPL OFF Main circuit Block diagram Features CPU IC6 SC3041K12FPin arrangement DMA Internal block diagramDmac ROM RAM CPU SC3041K12F IC1 pin signal MCS RES ResetCLK OUT NMI O IC8 CXD1095Q OdenVDD O CXD1095Q IC8 pin signal Oden Reset CLR ResetPC1 CPFC1 OUT PC2 CPEC2 OUT Start/stop control circuit Detector circuit of sensor signalSEL C SEL B SEL a SEL a SEL B SEL C Heater lamp control circuit Stepping motor drive circuit Driver circuit Solenoid, electromagnetic clutchOperation Load AE Auto Exposure sensor circuit Reset IC IC13Toner supply motor drive circuit CW/CCW Operation panel KI0 KI1KI2 CPU Hound AC Circuit EnergyStar circuit description ADU circuit description ADU circuit block diagram ROM RAM ADU CPU IC1 DSR TXDRES Stby ADU motor DDM drive circuit Stepping motor PAM1, PAM2 drive circuit GND