Minolta Di850 Servisní příručka

Di850Service Manual[General]Service Manual [General] Di8507661-4027-11 02080000Copyright2002 MINOLTA CO., LTD.MINOLTA Co.,Ltd.Use of this manual s

SAFETY AND IMPORTANT WARNING ITEMSS-52.Installation Requirements• Pay attention to the point to which the ground lead is connected.Connecting the grou

BY-PASS TRAY2-L-32 UNIT EXPLANATION[4] Paper Up/down ControlBy-pass tray paper is moved up and down by transmit-ting the drive force of M22 (up/down (

BY-PASS TRAY2-L-42 UNIT EXPLANATION[5] Paper Size Detection ControlThe size of paper in the by-pass tray is detected byPS55 (paper size 1 (by-pass tra

VERTICAL PAPER CONVEYANCE SECTION2-M-12 UNIT EXPLANATIONVERTICAL PAPER CONVEYANCE SECTION[1] Composition[2] MechanismsMechanism MethodPaper conveyance

VERTICAL PAPER CONVEYANCE SECTION2-M-22 UNIT EXPLANATION[3] Vertical Paper Conveyance ControlIn the vertical paper conveyance section, paper is fedver

ADU2-N-12 UNIT EXPLANATIONADU[1] CompositionPaper gatePaper exit rollerPaper reverse/exit roller 1Paper reverse/exit roller 2Paper reverse/exit roller

ADU2-N-22 UNIT EXPLANATION[2] MechanismsMechanism MethodSecond paper feed paper loop Loop roller*1 Second paper feed mis-centering correction Write

ADU2-N-32 UNIT EXPLANATION*1 Second paper feed paper mis-centering correc-tionPS1 (paper mis-centering) is mounted at the exitof the registration roll

ADU2-N-42 UNIT EXPLANATION*5 Paper conveyance unit paper suction mecha-nism A paper suction duct is provided in the middle ofthe paper conveyance and

ADU2-N-52 UNIT EXPLANATIONb) Straight ejectionWhen paper is ejected straight, SD2 is turnedON to close the paper gate. The paper fed by thepaper rever

ADU2-N-62 UNIT EXPLANATIONc) ADU paper conveyanceIn the two-sided copy mode, the paper finishedwith printing on the front side is fed, through thepath

SAFETY AND IMPORTANT WARNING ITEMSS-6• The copier generates ozone gas during operation, but it is not sufficient to beharmful to the human body.If a b

ADU2-N-72 UNIT EXPLANATION*9 Nonstack paper feed mechanismIn the two-sided copy mode, the paper fed fromthe paper reverse/exit section is conveyed to

ADU2-N-82 UNIT EXPLANATION*11 ADU section jam removal mechanismWhen a jam occurs in the ADU horizontal con-veyance section, the jammed paper can berem

ADU2-N-92 UNIT EXPLANATION[3] Loop/Second Paper Feed ControlThe paper fed from one of trays 1-3 is fed to the secondpaper feed unit. The second paper

ADU2-N-102 UNIT EXPLANATION2. Signalsa. PRCB input signals(1) PS54 (PS54 to PRCB)Loop formation reference timing detection sig-nal.The leading edge or

ADU2-N-112 UNIT EXPLANATION[5] Paper Reverse and Exit ControlThe paper fed from the fixing unit is fed, through thepaper reverse and conveyance sectio

ADU2-N-122 UNIT EXPLANATIONb) Linear velocity is changed to high speedwhen the trailing edge of the paper conveyedat low speed by M5 passes the nip of

ADU2-N-132 UNIT EXPLANATION[6] ADU Paper Feed/Reversal ControlThe paper fed from the paper reverse and eject sectionis fed to the ADU by M5 (paper rev

ADU2-N-142 UNIT EXPLANATION2. Signalsa. ADUSDB input signals(1) PS58 (PS58 to ADUSDB to PRCB)Detection of paper passage in ADU paper rever-sal section

ADU2-N-152 UNIT EXPLANATION[7] ADU Paper Conveyance/Feed ControlThe paper fed from the ADU paper reversal section isfed to the paper conveyance roller

ADU2-N-162 UNIT EXPLANATIONd. ADU lock controlThe ADU handle is locked by SD1. PS10 detectsthe handle position to determine whether thehandle is locke

SAFETY AND IMPORTANT WARNING ITEMSS-7• Take every care when servicing with the external cover detached.High-voltage exists around the drum unit. A ris

FIXING UNIT2-O-12 UNIT EXPLANATIONFIXING UNIT[1] Composition211267538910111918171314161541. Cleaning web2. Fixing upper cover3. Fixing web motor (M16)

FIXING UNIT2-O-22 UNIT EXPLANATION[2] MechanismsMechanism MethodFixing Pressure + heat roller*1 Heat source Heater lamp (fixing upper roller (two lam

FIXING UNIT2-O-32 UNIT EXPLANATION*1 Fixing heater lampsTwo halogen lamps are used for the fixing upperroller and one halogen lamp is used for the fix

FIXING UNIT2-O-42 UNIT EXPLANATION*5 Jam detectionWhen a jam occurs in the paper exit section in thefixing unit, the jammed paper presses down theactu

FIXING UNIT2-O-52 UNIT EXPLANATION[3] M16 (Web Drive) ControlM16 (web drive) is controlled directly by PRCB (printercontrol board). Related signals ar

FIXING UNIT2-O-62 UNIT EXPLANATION[4] Fixing Temperature ControlThe fixing upper roller is heated by L2 (fixing upperroller heater lamp 1) and L3 (fix

FIXING UNIT2-O-72 UNIT EXPLANATIONb. Protection against abnormalityThermostats are used to prevent the tempera-ture of the fixing rollers from rising

FIXING UNIT2-O-82 UNIT EXPLANATION[5] SD3 (Fixing Guide) ControlSD3 (fixing guide) is driven by ADUSDB (ADU standdrive board) and controlled by serial

OTHER KINDS OF CONTROL2-P-12 UNIT EXPLANATIONOTHER KINDS OF CONTROL[1] Parts Energized when the Main Switch is OFF1. OperationIf the power cord is plu

OTHER KINDS OF CONTROL2-P-22 UNIT EXPLANATION[2] Parts that Operate when the SW1 (Main) is Turned ON1. Operationa. Power supplyWhen SW1 (main) is turn

SAFETY AND IMPORTANT WARNING ITEMSS-8WARNING: Safety Checkpoints• After replacing a part to which AC voltage is applied (e.g., optical lamp andfixing

OTHER KINDS OF CONTROL2-P-32 UNIT EXPLANATION[3] Cooling Fan Control1. OperationA 24V DC motor is used for each cooling fan.a. FM1(1) ON timingHeld ON

OTHER KINDS OF CONTROL2-P-42 UNIT EXPLANATION2. Signalsa. PRCB input signals(1) FM3 EM (FM3 to PRCB)FM3 fault detection signal.[H]:Fault is detected(2

OTHER KINDS OF CONTROL2-P-52 UNIT EXPLANATIONd. ADUSDB output signal(1) FM1 DRIVE (ADUSDB to FM1)FM1 ON/OFF control signal.[L]: FM1 ON[H]: FM1 OFF(2)

OTHER KINDS OF CONTROL2-P-62 UNIT EXPLANATION[4] Operation Panel ControlThe operation panel consists of OB1 (operation board1), OB2 (operation board 2

OTHER KINDS OF CONTROL2-P-72 UNIT EXPLANATION2. Signalsa. PRCB input signals(1) OB1 RXD (OB1 to ICB)Serial data which informs ICB of the operationstat

OTHER KINDS OF CONTROL2-P-82 UNIT EXPLANATION[5] Counter ControlThis machine has the following counters:C (T): Total counterC (K): Key counterThese co

OTHER KINDS OF CONTROL2-P-92 UNIT EXPLANATION[6] Option ControlOptions such as LCT and FNS are controlled by thePRCB (printer control board).1. Operat

OTHER KINDS OF CONTROL2-P-102 UNIT EXPLANATION<Functions and output timings of signals for coin vendors><Functions and output timings of sign

Di850Service Manual[General]Service Manual [General] Di8507661-4027-11 02080000Copyright2002 MINOLTA CO., LTD.MINOLTA Co.,Ltd.Use of this manual s

SAFETY INFORMATIONS-9[3] CONCLUSION1. Safety of users and customer engineers depends highly on accurate maintenance and administration.Therefore, safe

SAFETY INFORMATIONS-10This machine is provided with the following safety cir-cuits to prevent machine faults from resulting in seri-ous accidents.[1]

SAFETY INFORMATIONS-112. Protection by the hardware circuitThe output voltages from TH1 and TH2 (fixingtemperature sensor 2), TH3 (fixing tempera-ture

SAFETY INFORMATIONS-12Caution labels shown below are attached in some areas on/in the machine areas.When accessing these areas for maintenance, repair

SAFETY INFORMATIONS-13CAUTIONPlease adhere to all caution labels to avoid burns or injury. PSVISIBLE LASER RADIATION WHEN OPEN.AVOID DIRECT EXPOSURE

SAFETY INFORMATIONS-14CAUTIONPlease adhere to all caution labels to avoid burns or injury.CAUTIONCAUTIONCAUTIONCAUTIONInside the lower paper exit outl

Dual references may be used on the following:Official Options name : Popular Options nameEDH-5 : RADFC-403/C-404 : LT and LCTFN-115 : FNSFN-7 : FNSCov

SAFETY INFORMATIONS-15CAUTIONPlease adhere to all caution labels to avoid burns or injury.Unplug the machine before removing panels.D brancher lÕappar

SAFETY INFORMATIONS-16CAUTIONPlease adhere to all caution labels to avoid burns or injury. Unplug the machine before removing panels.Débrancher l’appa

11 OUTLINEOUTLINEDi850g.book1ページ２００２年７月１２日 金曜日 午前８時３６分

1 OUTLINEDi850g.book2ページ２００２年７月１２日 金曜日 午前８時３６分

OUTLINE1-11 OUTLINEOUTLINE OF SYSTEMCover Inserter[Cover Inserter C]Puncher[PK-3]Finisher[FN-115]Finisher[FN-7]Tr im me r[TMG-2]Printer ControllerLCT

OUTLINE1-21 OUTLINEPRODUCT SPECIFICATIONS[1] TypeInstallation Type:Console type (floor-mounted type)Copying method:Indirect electrostatic methodDocume

OUTLINE1-31 OUTLINE[3] Applicable Copy PaperPlain paper:High quality paper 60 to 90 g/m2or 17 to 24 lbsSpecial paper:High quality paper 50 to 59 g/m2

OUTLINE1-41 OUTLINECENTER CROSS-SECTIONAL VIEWImage processing sectionCleaning section PCLCharging corona sectionExposure lampRADFImage read sectionIm

OUTLINE1-51 OUTLINEDRIVE SYSTEM DIAGRAM[1] Main Drive Section1Fixing unit upper rollerFixing unit Heating rollerTo paper conveyance and transfer/separ

OUTLINE1-61 OUTLINE[2] Drum Drive SectionDrumToner guide brushDrum motor (M2)Toner guide shaftToner conveyance screwsSeparation claw unitSeparation cl

OUTLINE1-71 OUTLINE[3] Developing Drive Section[4] Paper Feed Drive SectionFRONTAgitator screwAgitator wheelDeveloping sleeveDeveloping motor (M3)5623

OUTLINE1-81 OUTLINE[5] Tray 1 and 2 Paper Feed Drive Section23Pre-registration MC1/2 (MC4/MC6)Pre-feed registration rollerFeed rollerTray up motor 1/2

OUTLINE1-91 OUTLINE[6] Tray 3 Paper Feed Drive Section4Pre-registration MC3 (MC8)Pre-feed registration rollerFeed rollerFRONTFrom paper feed drive sec

OUTLINE1-101 OUTLINE[7] Vertical Conveyance Drive Section756From bypass paper feed drive sectionVertical conveyance roller (Upper)Vertical conveyance

OUTLINE1-111 OUTLINE[8] By-pass Paper Feed Drive Section87Loop roller motor (M6)FRONTTray up/down motor (by-pass tray: M22)Paper feed rollerTo ADU con

OUTLINE1-121 OUTLINE[9] Conveyance/Transfer and Separation Wire Cleaning Drive Section1FRONTConveyance beltsTransfer/separation cleaning motor (M18)Th

OUTLINE1-131 OUTLINE[10] ADU Conveyance Drive Section8FRONTLoop rollerADU exit rollerRegistration rollerRegistration MC (MC1)Registration motor (M12)T

OUTLINE1-141 OUTLINE[11] Paper Exit Drive Section[12] Toner Supply Drive SectionFRONTPaper exit motor (M10)Paper exit rollerFRONTToner supply motor 1

OUTLINE1-151 OUTLINE[13] Optics Drive SectionFRONTSecond mirrorFirst mirrorSlit-glassOptics wire (Front)Third mirrorOptics wire (Rear)Scanner drive mo

OUTLINE1-161 OUTLINE[14] Web Drive SectionFRONTWeb drive motor (M16)Cleaning webDi850g.book16ページ２００２年７月１２日 金曜日 午前８時３６分

SAFETYANDIMPORT A NTW ARNINGITEMS. . . . S-1IMPORTANTNOTICE . . . . . . . . . . . . . . . . . S-1DANGER,WARNING,ANDCAUTIONSYMBOLSANDEXPRE

22 UNIT EXPLANATIONUNIT EXPLANATIONDi850g.book1ページ２００２年７月１２日 金曜日 午前８時３６分

2 UNIT EXPLANATIONDi850g.book2ページ２００２年７月１２日 金曜日 午前８時３６分

EXTERNAL SECTION2-A-12 UNIT EXPLANATIONEXTERNAL SECTION[1] CompositionRight side cover (lower)Main switchBypass trayFront right doorTray 1Tray 2Tray 3

2 UNIT EXPLANATIONDi850g.book2ページ２００２年７月１２日 金曜日 午前８時３６分

DRIVE SECTION2-B-12 UNIT EXPLANATIONDRIVE SECTION[1] Composition[2] Mechanisms*1 Independent drive mechanismsDrive mechanisms are driven by dedicated

DRIVE SECTION2-B-22 UNIT EXPLANATION[3] M1 (Main) ControlM1 (main) is controlled by the PRCB (printer controlboard) and the motor drive power is suppl

READ SECTION2-C-12 UNIT EXPLANATIONREAD SECTION[1] Composition[2] MechanismsMechanism MethodLight source Xenon lampExposure Light source shift slit ex

READ SECTION2-C-22 UNIT EXPLANATION[3] M13 (Scanner Drive) ControlM13 (scanner drive) is driven by the SCDB (scannerdrive board) and is controlled by

READ SECTION2-C-32 UNIT EXPLANATIONf. ADF copy operationg. Platen copy operation2. Signalsa. PRCB input signals(1) PS5 (PS5 to SCDB to PRCB)Scanner ho

READ SECTION2-C-42 UNIT EXPLANATION[4] Exposure controlL1 (exposure lamp) is driven by the L1 INVB (L1inverter) and is controlled by the PRCB (printer

CONTENTS3 DIS./ASSEMBLY1 OUTLINE3 DIS./ASSEMBLY2 UNIT EXPLANATION[7] PCL/TSL Control ...2-F-6DEVELOPING UNIT...

READ SECTION2-C-52 UNIT EXPLANATION[5] Original Read ControlOriginal read control is performed by the ADB (A/Dconverter board) and CCD sensor installe

READ SECTION2-C-62 UNIT EXPLANATION(2) Platen modeThe paper size is detected according to the com-bination of ON/OFF states of PS62 (APS 1),PS63 (APS

READ SECTION2-C-72 UNIT EXPLANATION[7] AE ControlThe CCD sensor detects the image density on an orig-inal during AE scanning to select the optimum cop

2 UNIT EXPLANATIONDi850g.book8ページ２００２年７月１２日 金曜日 午前８時３６分

WRITE UNIT2-D-12 UNIT EXPLANATIONWRITE UNIT[1] Composition[2] Mechanisms*1 Path of laser lightThe light output from semiconductor laser is radi-ated o

WRITE UNIT2-D-22 UNIT EXPLANATION*2 PositioningEach laser beam is positioned by the compres-sion prism and fine adjustment prism.*3 Laser beam combini

WRITE UNIT2-D-32 UNIT EXPLANATIONb. PRCB output signals(1) M17 CONT (PRCB to PMDB)This signal turns ON/OFF M17.[L]: M17 ON[H]: M17 OFF(2) M17 CLK (PRC

WRITE UNIT2-D-42 UNIT EXPLANATION[4] Image Write ControlThe analog image data from the CCD sensor is A/D-converted by the ADB (A/D converter board), t

WRITE UNIT2-D-52 UNIT EXPLANATION1. Operationa. Image processingThe following processing is performed by the ICB(image control board):(1) AOC (Auto Of

WRITE UNIT2-D-62 UNIT EXPLANATION2. Signalsa. ICB IFB input signals(1) M INDEX 1, 2 (INDEXSB to ICB IFB)This is an index signal used to detect deviati

SAFETY AND IMPORTANT WARNING ITEMSS-1Read carefully the Safety and Important Warning Items described below to understand them before doing ser-vice wo

DRUM UNIT2-E-12 UNIT EXPLANATIONDRUM UNIT[1] Composition[2] MechanismsThe drum unit is an integral assembly consisting of adrum, charging corona unit,

DRUM UNIT2-E-22 UNIT EXPLANATION[3] Separation Claw ControlThe separation claw is driven by SD4 (separationclaw). The vibration of the separation claw

DRUM UNIT2-E-32 UNIT EXPLANATION[5] Drum Potential ControlThe drum potential is detected by the DPS (drumpotential sensor) and send the PRCB (printer

2 UNIT EXPLANATIONDi850g.book4ページ２００２年７月１２日 金曜日 午前８時３６分

CORONA UNIT SECTION2-F-12 UNIT EXPLANATIONCORONA UNIT SECTION[1] Composition[2] Mechanisms*1 Cleaning the charging wireThe charging corona unit has wi

CORONA UNIT SECTION2-F-22 UNIT EXPLANATION[3] Charging ControlCharging control is conducted by serial data transmit-ted from PRCB (printer control boa

CORONA UNIT SECTION2-F-32 UNIT EXPLANATION[4] Transfer/Separation ControlThe transfer and separation corona unit is controlled bythe PRCB (printer con

CORONA UNIT SECTION2-F-42 UNIT EXPLANATIONd. ADUSDB output signals(1) T CONT (ADUSDB to HV2)Transfer corona unit output ON/OFF control sig-nal.[L]: Tr

CORONA UNIT SECTION2-F-52 UNIT EXPLANATION2. Signalsa. Input signals(1) PS41 (PS41 to PRCB)Charging wire cleaning pad home positiondetection signal.Th

CORONA UNIT SECTION2-F-62 UNIT EXPLANATIONc. Cleaning operationThe home position of the transfer and separationwire cleaning pads is on the front side

SAFETY AND IMPORTANT WARNING ITEMSS-2[1] MODIFICATIONS NOT AUTHORIZED BY MINOLTAMinolta copiers are renowned for their high reliability. This reliabi

DEVELOPING UNIT2-G-12 UNIT EXPLANATIONDEVELOPING UNIT[1] Composition[2] Mechanisms1. The developing unit drive motor (M3)drives the following parts vi

DEVELOPING UNIT2-G-22 UNIT EXPLANATION[3] M3 (Developing Unit Drive) ControlM3 (developing) is controlled by the PRCB (printercontrol board) and the m

DEVELOPING UNIT2-G-32 UNIT EXPLANATION[5] Toner Density ControlThe toner density is controlled directly by PRCB(printer control board) by controlling

DEVELOPING UNIT2-G-42 UNIT EXPLANATION[6] Dmax ControlDmax control is performed by the TCSB (tonercontrol sensor board), M2 (drum), M3 (develop-ing),

DEVELOPING UNIT2-G-52 UNIT EXPLANATION2. Signalsa. PRCB input signals(1) Dmax SIG (TCSB to PRCB)Output voltage of the Dmax value detection sen-sor (PD

DEVELOPING UNIT2-G-62 UNIT EXPLANATION[7] Gradation Correction ControlGradation correction control is performed by the TCSB(toner control sensor board

DEVELOPING UNIT2-G-72 UNIT EXPLANATIONb. PRCB Output signals(1) γ LED CONT, γ CONT (PRCB to TCSB)ON/OFF control signal for gradation detectionLED.[L]:

DEVELOPING UNIT2-G-82 UNIT EXPLANATION[9] FM2 (Developing Suction) ControlFM2 (Developing suction) is controlled by the PRCB(printer control board) vi

TONER SUPPLY UNIT2-H-12 UNIT EXPLANATIONTONER SUPPLY UNIT[1] Composition[2] Mechanisms*1 Toner agitationToner agitator plates are driven by the follow

TONER SUPPLY UNIT2-H-22 UNIT EXPLANATION*2 Toner cartridgeWhen the toner cartridge rotates, toner is fed tothe outlet of the cartridge through the spi

SAFETY AND IMPORTANT WARNING ITEMSS-3[2] CHECKPOINTS WHEN PERFORMING ON-SITE SERVICEMinolta copiers are extensively tested before shipping, to ensure

TONER SUPPLY UNIT2-H-32 UNIT EXPLANATION2. Signalsa. Input signal(1) TLD (TLD to PRCB)When the level of toner in the cartridge becomeslow, this signal

2 UNIT EXPLANATIONDi850g.book4ページ２００２年７月１２日 金曜日 午前８時３６分

CLEANING/TONER RECYCLE UNIT2-I-12 UNIT EXPLANATIONCLEANING/TONER RECYCLE UNIT[1] Composition[2] Mechanisms*1 Drum cleaningTwo cleaning blades are inst

CLEANING/TONER RECYCLE UNIT2-I-22 UNIT EXPLANATION[3] M14 (Blade) ControlM14 (blade) is a 24V DC driven motor and drives thecleaning blades. By M14, t

TRAY 1/2 PAPER FEED UNIT2-J-12 UNIT EXPLANATIONTRAY 1/2 PAPER FEED UNIT[1] CompositionCaution: Trays 1 and 2 have the same shape and mechanisms.[2] Me

TRAY 1/2 PAPER FEED UNIT2-J-22 UNIT EXPLANATIONb) Lowering of up/down plate When the paper feed tray is pulled out, theguide lever shown below is dise

TRAY 1/2 PAPER FEED UNIT2-J-32 UNIT EXPLANATION[3] First Paper Feed ControlThe 1st paper feed from tray 1 or 2 takes place asthe result of the transmi

TRAY 1/2 PAPER FEED UNIT2-J-42 UNIT EXPLANATION2. Signalsa. PRCB input signals(1) PS47 (PS47 to PRCB)Paper passage detection signal (tray 1).[L]: Pape

TRAY 1/2 PAPER FEED UNIT2-J-52 UNIT EXPLANATION[4] Paper Up Drive ControlPapers stacked in the tray are pushed up by transmit-ting the drive force of

TRAY 1/2 PAPER FEED UNIT2-J-62 UNIT EXPLANATIONc. Remaining Paper Detection ControlThe level of paper remaining in each tray isdetected according to t

SAFETY AND IMPORTANT WARNING ITEMSS-4• Do not bundle or tie the power cord. Overheating may occur there, leading to a risk of fire. • Check whether du

TRAY 1/2 PAPER FEED UNIT2-J-72 UNIT EXPLANATION[5] Paper Size Detection ControlThe paper size in tray 1/2 is detected using PS32(paper size 1-1), PS33

TRAY 1/2 PAPER FEED UNIT2-J-82 UNIT EXPLANATION[6] No Paper Detection ControlNo paper in the tray is detected by PS26 (no paper 1)and PS27 (no paper 2

TRAY 3 PAPER FEED UNIT2-K-12 UNIT EXPLANATIONTRAY 3 PAPER FEED UNIT[1] Composition[2] Mechanisms*1 Paper lift-upa) Hoisting of up/down plate The up/do

TRAY 3 PAPER FEED UNIT2-K-22 UNIT EXPLANATIONb) Lowering of up/down plate When the paper feed tray is pulled out, theguide lever shown below is diseng

TRAY 3 PAPER FEED UNIT2-K-32 UNIT EXPLANATION[3] First Paper Feed ControlThe 1st paper feed from tray 3 takes place as the resultof the transmission o

TRAY 3 PAPER FEED UNIT2-K-42 UNIT EXPLANATION[4] Paper Up Drive ControlPapers stacked in the tray are pushed up by transmit-ting the drive force of M2

TRAY 3 PAPER FEED UNIT2-K-52 UNIT EXPLANATION[5] Paper Size Detection ControlThe paper size in tray 3 is detected using PS38 (papersize 1-3), PS39 (pa

2 UNIT EXPLANATIONDi850g.book6ページ２００２年７月１２日 金曜日 午前８時３６分

BY-PASS TRAY2-L-12 UNIT EXPLANATIONBY-PASS TRAY[1] Composition[2] Mechanisms*1 By-pass paper feed rollerTo keep constant contact pressure on the paper

BY-PASS TRAY2-L-22 UNIT EXPLANATION[3] First Paper Feed ControlThe 1st paper feed from the by-pass tray takes place asthe result of the transmission o