Drum Replace every 50K copies | Sharp SF-1120, SF-1020 instruction

6-3. Drum (Replace every 50K copies)

1Remove the process unit from the copier. (Refer to 6-1.)

2Loosen two blue screws which are fixing the drum, rotate the plate slightly to the right and pull it out.

3Remove the drum.

<Note> Be careful not to scratch the drum.

6-4. Blank lamp unit (Clean every 50K copies.)

1Remove three blue screws which are fixing the process unit holder, slide the holder and remove it.

2Tighten the blank lamp unit position adjustment screw completely, and remove the unit rear side, then loosen the screw.

3Remove two connectors of the blank lamp PWB, and remove the blank lamp unit.

<Note> When the unit is installed or replaced, adjust according to "Blank lamp position adjustment" in [7] ADJUSTMENTS.

6-5. Discharge lamp unit (Clean every 50K copies.)

1Remove three blue screws which are fixing the process unit holder, slide the holder and remove it.

2Remove the discharge lamp unit. (one screw, one connector)

6 – 19

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Sharp SF-1120, SF-1020 service manual Drum Replace every 50K copies, Blank lamp unit Clean every 50K copies

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 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 Center shift adjustment Label attachmentLabel 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 Optical section Basic operationsGeneral description Lens fixed focus lens Original table Copy lampMirror Lens home position sensor Lhps Exposure adjustment plate Lens drive wireTemperature fuse Mirror base drive wire Original size sensing CLVEX1 EX5 Optical system dirt correction CPU Copy process This model basic process and structurePhotoconductor Process diagram Exposure Details of image forming processMain Charging CTL CGL Development CGL CTL Transfer SeparationCTL Cleaning Discharging Process control function Transition of photoconductor surface potentialPhotoconductor drum sensitivity correction Summary Drum marking Process controlProcess control timing Basic structure Fusing paper exit section GeneralBasic composition and functions Basic composition High voltage sectionADU unit SF-1120 only 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 Heater lamp replacement Fusing sectionFusing unit removal Upper heat roller assy removal Upper separation pawl replacement Lower heat roller replacementLower separation pawl 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 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 replacement Lens wire removal Procedures Lens unit replacement Lens unit installationLens removal Cleaning/replacement and note High voltage sectionMain charger MC unit Transfer/separation charger TC/SC unit ~0.5 Cleaning/replacement and precautionsProcess section Process unitPage Blank lamp unit Clean every 50K copies Discharge lamp unit Clean every 50K copiesDrum Replace 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 Power unit Tray size detecting PWBCooling fan motor AC power PWB Main PWB unit Multi paper feed unit SF-MF15 option Take-up roller/paper feed roller ADU Reverse rollerPaper feed 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 Original detecting level adjustment 3 4 5 6A4R LTR 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 User simulation User simulation code tableLED 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 System operation when the power is turned on JAMRPL on PSW on RPL OFF Block diagram Main circuit Features CPU IC6 SC3041K12FPin arrangement Dmac ROM Internal block diagramDMA RAM CPU SC3041K12F IC1 pin signal CLK OUT RES ResetMCS NMI O IC8 CXD1095Q OdenVDD 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 Operation panel KI0 KI1KI2 CPU 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