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Sharp SF-1120, SF-1020 service manual Gnd

Models: SF-1120 SF-1020

1 140

Download 140 pages 48.95 Kb

Page 140

VB

IC2

COM

9

SPM2 A

1

16

PAM1 A

CNB-13

I1

O7

SPM2-A

2

15

PAM1 /A

I2

O6

CNB-11

SPM2 B

3

14

PAM1 B

I3

O5

CNB-9

SPM2-B

4

13

PAM1 /B

I4

O4

CNB-7

5

12

I5

O3

6

11

I6

O2

7

10

VH

I7

O1

8

VH

GND

R20

D15

uLN2003A

10KJ

1/4W

R17

R21

1SS133

24KJ

Q2

R18

Q1

2.7KJ

2SC1740S

2SC1740S

2.7KJ

R22

R19

10KJ

10KJ

Q4

D16

2SC1740S

VH

R30

1SS133

2.7KJ

R27

R31

24KJ

10KJ

R28

Q3

2.7KJ

2SC1740S

R29

10KJ

6.2KJ

F1

VH

1/2Wx2

R25

R23

IC8

125V 1.6A

R6

R5

SLA4391

250V T1.6A

2KJ

2KJ

R3

1

VCC

3

SIG1

VCC

10

D20

D18

8.2KJ 1/2W

R24

5

OUT1

11

RK14

RK14

CNB-17

2KJ

SIG2

OUT2

9

C29

OUT3

4

R26

8

10000pF

OUT4

2

CNB-15

2KJ

SIG3

D19

VDD

6

D17

R4

12

RK14

RK14

VDD

7

8.2KJ 1/2W

SIG4

VD

VD

R14

10KJ

IC7A

R15

R2

C27

30KF

0.22J/1W

8

22000pF

3

R13

C26

1

2

10KJ

10000pF

R16

DDM_DIR

LM393F

4

1.5KF

DDM_PWM

C8

10uF/35V

IC8 (SLA4391) internal diagram

R3 R4

1

A

5

R1 R2

C

310

VH

2 11

4	M
	9

67

GND

12

B

8

D

12 – 21

Image 140

Sharp SF-1120, SF-1020 service manual Gnd

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 Supply parts Brazil/Asia except Hong KongMiddle East/Africa SF-LS12Optional specifications Bin staple sorter 10-bin SS Model name SF-S54 Staple sectionTwo-step paper feed unit Model name SF-CM15 One-step paper feed unit SF-CM16Product Views External view and internal structureOperation panel SF-1020SF-1120 Clutches and solenoids MotorsPWB Explained with the SF-1120 and the SF-CM15 TCS IlswMSW PODRollers, mirrors, etc Unpacking and Installation InstallationInstalling conditions UnpackingInstallation base Power sourceGrounding wire connection Space around the machineCharger cleaning Main charger unit electrode cleaningOptical system lock release No /3 mirror unit lock releaseDeveloping unit setting Developing unit settingAccessory installation Toner density sensor level adjustmentCopy tray installation Developing unit level adjustmentPage Label attachment Center shift adjustmentLabel attachment Optional two-step paper feed unit SF-CM15 installation Parts packed togetherING and Installation Optional one-step paper feed unit SF-CM16Included parts Removing the rear cover to the main copier units lower trayPlacing the main copier unit over the paper feed unit Removing the lower tray from the main copier unitAttaching the main copier unit and paper feed unit Plugging in the relay harnessSet the mode Tray paper size selection Described with the SF-1020Centering the paper Remove the trayAttach the tray Set paper, and change the paper size displayDescriptions of Each Section Paper feed sectionGeneral descriptions Basic operationsDeveloping section Basic compositionGeneral description Optical sectionBasic operations Original table Copy lamp MirrorLens fixed focus lens Lens home position sensor LhpsLens drive wire Temperature fuseExposure adjustment plate Mirror base drive wireEX1 EX5 Original size sensingCLV Optical system dirt correction CPUPhotoconductor Copy processThis model basic process and structure Process diagram Details of image forming process Main ChargingExposure CTL CGLDevelopment CGL CTLCTL TransferSeparation Cleaning DischargingTransition of photoconductor surface potential Photoconductor drum sensitivity correctionProcess control function SummaryProcess control Process control timingDrum marking Basic structureBasic composition and functions Fusing paper exit sectionGeneral High voltage section ADU unit SF-1120 onlyBasic composition Basic operationDetails 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 Fusing section Fusing unit removalHeater lamp replacement Upper heat roller assy removalLower separation pawl replacement Upper separation pawl replacementLower heat roller replacement Copy lamp replacement Mirror base wire replacement and adjustmentOptical system Thermistor/thermostat removalMirror base wire removal No /3 mirror unit mirror base B removalMirror 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 removalProcedures Lens removal Lens unit replacementLens unit installation Main charger MC unit Cleaning/replacement and noteHigh voltage section ~0.5 Cleaning/replacement and precautions Process sectionTransfer/separation charger TC/SC unit Process unitPage Drum Replace every 50K copies Blank lamp unit Clean every 50K copiesDischarge lamp unit Clean every 50K copies Cleaner blade Replace every 50K copies DV side seals F/R replacement Replace every 120K copiesDrum separation pawl Replace every 50K copies Toner reception seal Replace every 50K copiesDB blade replacement Replace every 120K copies Ring attachmentCooling fan motor replacement Operation panel/intermediate cabinetFrame major parts Developing unit color identificationCooling fan motor Power unitTray size detecting PWB AC power PWB Main PWB unitMulti paper feed unit SF-MF15 option Take-up roller/paper feed rollerPaper feed roller ADUReverse roller Paper feed unit SF-CM15, SF-CM16, option Adjustments Developing doctor clearance adjustmentDeveloping magnet roller main pole position adjustment Adjustment procedureAdjustment items YES Adjustment of each section Lens reference position adjustmentNo /5 mirror reference position adjustment 51 50Vertical copy magnification ratio adjustment 110Resolution adjustment Focus adjustment No.4/5 mirror adjustment screw Horizontal copy magnification ratio adjustment Adjustment procedureComparison table of lens values and simulation input values Vertical skew adjustment Horizontal skew adjustmentMirror base rail handle Loosen Center shift adjustment Exposure balance adjustmentCopy lead edge adjustment End of scale image Original detecting arm unit adjustment Original detecting sectionA4R LTR Original detecting level adjustment3 4 5 6 Operating procedure Simulations operating procedureSimulation PurposeList of simulations Simulation 26-6 Destination setting Cassette size switch tableDetails of simulations Full power on Psps A4R B5R WLT LTR INVADF counter display ← Initial value SEC Secl Seeg SUK SCA OFFPPD1 PPD2PPD3 PPD4PD0 PD1PD2 PD3Developer counter clear Display range 8 ∼ No trouble 31 ∼ 35 --- Trouble The sub code is displayed Copying without grid bias correction ME + PE AE + PEPaper transport direction magnification ratio adjustment ADU alignment plate home position adjustment SF-2120 only User simulation 30 sec. This function can be clearedLED User simulationUser simulation code table Self Diagnostics Summary/purposeOperation Clearing the self diag displaySF-1120 only High LOWGeneral RemediesMake a copy and adjust Set value recording sheet Memory simulation list Maintenance Maintenance cycle and maintenance itemsSystem block diagram Electrical SectionRPL on PSW on RPL OFF System operation when the power is turned onJAM Block diagram Main circuitPin arrangement FeaturesCPU IC6 SC3041K12F Internal block diagram DMADmac ROM RAMCPU SC3041K12F IC1 pin signal RES Reset MCSCLK OUT NMIVDD O IC8 CXD1095QOden O CXD1095Q IC8 pin signal CLR Reset Oden ResetPC1 CPFC1 OUT PC2 CPEC2 OUTDetector circuit of sensor signal Start/stop control circuitSEL C SEL B SEL a SEL a SEL B SEL CHeater lamp control circuit Driver circuit Solenoid, electromagnetic clutch Stepping motor drive circuitOperation LoadReset IC IC13 AE Auto Exposure sensor circuitToner supply motor drive circuit CW/CCWKI2 CPU Operation panelKI0 KI1 EnergyStar circuit description Hound AC CircuitADU circuit block diagram ADU circuit descriptionADU CPU IC1 ROM RAMTXD DSRRES StbyStepping motor PAM1, PAM2 drive circuit ADU motor DDM drive circuitGND