Savin 9027DL Manual de Serviço

®SERVICE MANUALPN: RCFM5535A156/A212...SERIES®®RICOH GROUP COMPANIES

5.2 LEADING EDGE AND TRAILING EDGE ERASEThe entire row of LEDs turns on when the main motor turns on. They stay onuntil the erase margin slightly over

6. DEVELOPMENT6.1 OVERVIEW When main motor rotation is transmitted to the development unit, the paddleroller [A], development roller [B], auger [C],

6.2 DRIVE MECHANISM When the main motor [A] turns, the rotation is transmitted from thedevelopment drive shaft [B] to the paddle roller gear [C] thro

6.3 CROSS-MIXING This copier uses a standard cross-mixing mechanism to keep the toner anddeveloper evenly mixed. The developer on the turning devel

6.4 TONER DENSITY SENSOR A toner density sensor (the TD sensor) is installed under the developmentunit. It works in conjuction with the ID sensor to

6.5 DEVELOPMENT BIAS CONTROLThe actual development bias voltage applied depends on various processcontrol corrections that are added to the base volta

6.6 TONER SUPPLY6.6.1 Toner Bottle Replenishment Mechanism When a toner cartridge is placed on the holder unit [A] and pushed back incompletely, the

6.6.2 Toner Supply Mechanism Inside the toner supply unit there are the agitator [A], transport screw [B] andtoner supply roller [C]. As the grooves

6.6.3 Toner End Detection The toner end sensor (which is a piezoelectric sensor) [A] detects whetherthere is sufficient toner in the toner supply uni

7. IMAGE TRANSFER AND PAPERSEPARATION7.1 PRE-TRANSFER LAMP The pre-transfer lamp [A] prevents incomplete toner transfer. This lampconsists of a line o

The Service Training Manual contains informationregarding service techniques, procedures,processes and spare parts of office equipmentdistributed by R

7.2 IMAGE TRANSFER AND PAPER SEPARATION This model uses a transfer belt unit instead of a transfer and separationcorona unit. The transfer belt unit c

7.3 IMAGE TRANSFER AND PAPER SEPARATIONMECHANISM (1) The registration rollers [A] startfeeding the paper [B] to the gapbetween the OPC drum [C] and

(4) After the image transfer iscompleted, the charge on thetransfer belt holds the paper on thetransfer belt. Excess charge on thepaper and the transf

7.4 TRANSFER BELT UNIT LIFT MECHANISM The transfer belt contact clutch [A] (a one-third turn clutch) located on theback of the copier turns on and the

7.5 PAPER TRANSPORTATION AND BELT DRIVEMECHANISM The main motor [A] drives the transfer belt through some timing belts andgears. Since the transfer b

7.6 TRANSFER BELT CLEANING MECHANISM Some toner may adhere to the transfer belt under the following conditions:•When a paper jam occurs.•When the by

During the following modes, the transfer belt unit is away from the drumwhile the transfer belt is rotated. •1,000 copies process control•Stacking pap

7.7 TRANSFER BELT UNIT RELEASE MECHANISM When the transfer belt unit release lever "A1" [A] is rotated counterclockwise,the transfer belt un

8. DRUM CLEANING 8.1 OVERVIEW This copier uses a counter blade system for drum cleaning. In a counterblade system, the blade [A] is angled against dr

8.2 DRIVE MECHANISM Drive from the main motor is transmitted to the cleaning unit drive gear [A] bythe timing belts [B] and [C] and the joint gear [D]

8.3 CLEANING BLADE PRESSURE MECHANISM ANDSIDE-TO-SIDE MOVEMENT The spring [A] always pushes the cleaning blade against the OPC drum. Thecleaning blad

8.4 TONER COLLECTION MECHANISM Toner scraped off by the cleaning blade falls onto the toner collection coil[A]. The toner collection coil is driven by

9. TONER RECYCLING 9.1 OVERVIEWAs described in the "Drum Cleaning" section, the toner remaining on thedrum which was not transferred to the

9.2 NEW TONER AND RECYCLED TONER MIXTUREThe mixture ratio of new toner and recycled toner affects copy quality.New toner is supplied from the toner bo

10. QUENCHING In preparation for the next copy cycle, light from the quenching lamp [A]neutralizes any charge remaining on the drum.The quenching lamp

11. PAPER FEED AND REGISTRATION 11.1 OVERVIEW This model has three paper feed stations: the large capacity tray feed station(LCT machines only), the

11.2 PAPER FEED MECHANISM [A153/A155/A156]11.2.1 Drive Mechanism Each paper feed unit consists of a pick-up roller [A], feed roller [B],separation ro

11.2.2 Slip Clutch Mechanism The separation roller is mounted on a slip clutch. The slip clutch [A] consistsof an input hub [B] and an output hub [C]

11.2.3 Separation Roller Release Mechanism This FRR mechanism uses a separation roller release system. Theseparation roller [A] is normally away from

11.3 PAPER FEED DRIVE MECHANISM [A157/A159/A160] The main motor drives the paper feed rollers through the relay clutch gear[A], the timing belt [B]

Table of Contents1. OVERALL MACHINE INFORMATION 1. SPECIFICATIONS... 1-1 2. MACHINE CONFIGU

11.4 PAPER LIFT MECHANISM - A153/A155/A156 copiers -The tray switch detects when the tray is placed in the machine. When themachine detects that the p

When the tray lift motor turns on, the pick-up solenoid [A] activates to lowerthe pick-up roller [B]. When the top sheet of paper reaches the proper

- A157/A159/A160 copiers -When the paper tray is closed, the projection [A] on the tray pushes therelease lever [B], and the other projection [C] pu

11.5 PAPER END DETECTION - A153/A155/A156 copiers -If there is some paper in the paper tray, the paper end feeler [A] is raised bythe paper stack and

- A157/A159/A160 copiers -The paper end feeler [A] is on the same shaft as the paper end actuator [B].When the tray runs out of paper, the paper end

11.6 PAPER SIZE DETECTION Actuated = 0Deactuated = 1 Paper size L: Lengthwise S: SidewaysA4/A3 Version LT/DLT Version01111 A3-L 11" x 17&quo

11.7 SIDE FENCE DOUBLE STOPPER MECHANISM[A157/A159/A160] In this model, there is a side fence stopper mechanism for both the front andrear side fence

11.8 LARGE CAPACITY TRAY11.8.1 Paper Lift Mechanism The LCT upper limit sensor [A] above the paper feed upper guide platecontrols the LCT lift motor [

11.8.2 Paper Feed Mechanism The LCT uses an FRR feed system. Unlike for the A153/155/156 papertrays, the feed and separation rollers are always in con

11.9 BY-PASS FEED TABLE11.9.1 Table Open/Closed Detection The by-pass feed table switch [A] detects when the by-pass feed table isopened. Then the CPU

1.3 IMAGE DENSITY CONTROL ...2-10 1.3.1 Overview...

11.9.3 By-pass Feed Paper Width Detection The by-pass feed paper width sensor board [A] monitors the paper width.The rear side fence is connected to

11.10 PAPER REGISTRATION Main motor rotation is transmitted to the registration clutch [A] (located onthe lower registration roller shaft) through the

11.11 PAPER FEED AND MISFEED DETECTION TIMING11.11.1 Paper Feed TrayA153/A155/A156 copiers (A4 sideways) A157/A159/A160 copiers (A4 sideways) J1 and

A155/A156 copiers (A4 sideways; two copies of a single-page original) A159/A160 copiers (A4 sideways; two copies of a single-page original) J1: Checks

11.11.2 By-pass Feed A153/A155/A156 copiers (A4 sideways)A157/A159/A160 copiers (A4 sideways) J1: Checks whether the registration sensor is activated

12. DUPLEX 12.1 OVERVIEWThe duplex tray is used for multiple two-sided and single two-sided copying.Note the paper feed path differences between the

12.2 DRIVE MECHANISM The main motor [A] drives the transport rollers [B] through the timing belts[C]. All rollers in the duplex tray are driven by t

12.3 TURN GUIDE SECTION The junction gate solenoid [A] is energized 1.1 seconds after the registrationclutch has been turned on. Then, the junction ga

12.4 DUPLEX ENTRANCE TO DUPLEX TRAY The duplex feed motor [A] starts turning 500 ms after the leading edge of thepaper activates the fusing exit senso

12.5 DUPLEX STACKING There are two motors for driving the fences. The side jogger fences aredriven by the side fence jogger motor [A]. The end jogg

4.6 UNEVEN LIGHT INTENSITY CORRECTION ...2-46 4.7 ORIGINAL SIZE DETECTION IN PLATEN MODE ...2-47 4.8 AUTOMATI

12.6 PAPER FEED FROM THE DUPLEX TRAY 12.6.1 Tray Lift MechanismAfter the first side copies have been made, the duplex feed motor [A]changes direction

12.6.2 Paper Feed System While paper is being stacked in the duplex tray, the paper flatteners [A]correct curl at the leading edge of the paper.After

13. IMAGE FUSING13.1 OVERVIEW The fusing unit consists of the following parts: 1. Thermofuses (2 pcs)2. Thermistors (2 pcs)3. Secondary fusing lamp

13.2 FUSING DRIVE AND RELEASE MECHANISM The main motor [A] drives the fusing unit through a timing belt [B] and somegears [C].The fusing unit drive r

13.3 FUSING ENTRANCE GUIDE SHIFT MECHANISM The entrance guide [A] for this machine is adjustable for thick or thin paper.For thin paper, move the entr

13.4 PRESSURE ROLLER The pressure roller [A] is made of silicone rubber with a teflon tube coating.The pressure springs [C] constantly apply pressure

13.6 FUSING LAMP CONTROL There are two fusing lamps in the hot roller: the main fusing lamp (550 W)[A] and the secondary fusing lamp (350 W) [B]. The

Fusing Lamp Standby Temp. Operation Temp.A153/A155/A156 copiersMain165°C 180°CSecondary160°C 175°CA157/A159/A160 copiersMain160°C 175°CSecondary160°C

- On/Off Control -When both thermistors detect the operation temperature, both fusing lampsare turned off. After that, the CPU keeps the operation tem

13.7 OVERHEAT PROTECTIONIf the hot roller temperature stays higher than 230°C for 5 seconds, the CPUcuts off the power to the fusing lamps. At the sam

8.3 CLEANING BLADE PRESSURE MECHANISM AND SIDE-TO-SIDE MOVEMENT ...2-72 8.4 TONER COLLECTION M

AUTO REVERSE DOCUMENTFEEDER A548

1. SPECIFICATIONSOriginal Size and Weight: Thick original mode (default mode)Use this setting for normal paper typesMaximum A3, 11" x 17"Min

2. COMPONENT LAYOUT2.1 MECHANICAL COMPONENTS 109 1. Original Stopper 2. Press Lever 3. Original Table 4. Exit Rollers 5. Inverter Pawls 6. Inve

2.2 ELECTRICAL COMPONENTS 1. Original Set Sensor2. Feed-in Cover Open Sensor3. Stopper Solenoid4. Indicator Panel Lamps5. Feed-in Motor6. Belt Drive

3. ELECTRICAL COMPONENT DESCRIPTIONSymbol Name Function Index No.MotorsM1 Feed-inDrives the feed-in system (pick-up, feedand pull-out rollers, separat

4. DETAILED DESCRIPTIONS 4.1 ORIGINAL PICK-UP MECHANISMWhen an original is placed on the table, the leading edge is stopped by thestopper [A], and the

4.2 SEPARATION AND PAPER FEED MECHANISM Originals are separated using the friction belt [A] and the feed roller [B].When the copier sends a signal to

4.3 FRICTION BELT DRIVE MECHANISMThe feed-in motor [A] drives the friction belt [B] through timing belts andgears. The one-way bearing allows the belt

11.11.3 (A160/A157)...2-96 12. DUPLEX ...

4.4 ORIGINAL SIZE DETECTION The DF detects original width using three original width sensors-1 [A], -2 [B]and -3 [C]. It also detects the original len

4.5 PAPER TRANSPORT MECHANISM The transport belt [A] is driven by an independent motor called the belt drivemotor [B] (a dc stepper motor). The belt

4.6 THICK/THIN ORIGINAL MODES This document feeder has two different ways of stopping originals at thecorrect position on the exposure glass. The tech

4.7 ORIGINAL FEED-OUT MECHANISM When the scanner reaches the return position, the copier’s CPU sends thefeed-out signal to the DF CPU. When the DF re

4.8 TWO-SIDED ORIGINAL FEED MECHANISM Unlike one-sided original feed, the back side of the original must be copiedfirst to keep the originals and copi

5. TIMING CHARTS 5.1 A4 SIDEWAYS: 1 SIDED ORIGINALAUTO REVERSEDOCUMENTFEEDER A548STM 3-13 A156/A160/A162

5.2 COMBINE 2 ORIGINAL MODE A156/A160/A162 3-14 STM

5.3 A4 SIDEWAYS: DUPLEX AUTO REVERSEDOCUMENTFEEDER A548STM 3-15 A156/A160/A162

PAPER TRAY UNIT A550/549

4.4 ORIGINAL SIZE DETECTION ...3-8 4.5 PAPER TRANSPORT MECHANISM ...

1. SPECIFICATIONSConfiguration: Two-tray table or three-tray tableCopy Paper Size: Maximum A3/11" X 17"Minimum B5/81/2" X 11"Copy

2. COMPONENT LAYOUT2.1 MECHANICAL COMPONENT LAYOUT 1. Paper Tray 1 2. Pick-up Roller 3. Paper Feed Roller 4. Relay Rollers 5. Reverse Roller 6.

2.2 DRIVE LAYOUT 1. Vertical Transport Roller Gears 2. Paper Feed Clutch 1 3. Paper Feed Clutch 2 4. Separation Roller Gears 5. Paper Feed Clutc

2.3 ELECTRICAL COMPONENT DESCRIPTIONRefer to the electrical component layout on the reverse side of the Point toPoint Diagram (on waterproof paper).Sy

3. OVERVIEW There are two types of paper tray unit: the two-tray and three-tray types.Each paper tray [A] is a drawer type that can hold up to 500 she

4. DRIVE MECHANISM All the tray rollers are driven by the main motor [A] via timing belts, clutchesand a train of gears.Drive is transmitted to the ti

5. PAPER FEED AND MISFEED DETECTIONTIMING J1 and J2: Checks whether the sensor is activated within 500 ms after the designated time for these

PAPER TRAY UNIT A553

6. SORTER STAPLER A554 1. SPECIFICATIONS... 6-1 2. COMPONENT LAYOUT...

1. SPECIFICATIONSConfiguration: Two-tray tableCopy Paper Size: Maximum A3/11" x 17"Minimum B5/81/2" x 11"Copy Paper Weight: 64 - 9

2. COMPONENT LAYOUT2.1 MECHANICAL COMPONENT LAYOUT 2.2 DRIVE LAYOUT 1. Paper Tray 1 2. Paper Feed Rollers 3. Relay Rollers 4. Lower Right Door 5.

2.3 ELECTRICAL COMPONENT DESCRIPTIONRefer to the electrical component layout on the reverse side of the Point toPoint Diagram (on waterproof paper).Sy

3. OVERVIEW This paper feed unit is a two-tray type. Each paper tray [A] is a drawer typethat can hold up to 250 sheets of paper.The paper feed mech

4. DRIVE MECHANISMAll the tray rollers are driven by the main motor [A] via timing belts, clutchesand a train of gears.The main motor and the relay cl

5. PAPER FEED AND MISFEED DETECTIONTIMING J1 and J2: Checks whether the sensor is activeted within 667 ms after the designated time for th

SORTER STAPLER A554

1. SPECIFICATIONSPaper Size for Bins: Sort or stack mode:Maximum: A3, 11" x 17"Minimum: A5, 51/2" x 81/2" lengthwiseStaple mode:Ma

Staple Replenishment: Cartridge exchange(3,000 staples/cartridge)Power Source: DC 24V, 5V (form the copier)Power Consumption: 34 WDimensions:(W x D x

3.1 NORMAL MODE AND SORT/STACK MODE ...7-6 3.2 STAPLE MODE ...

2. COMPONENT LAYOUT2.1 MECHANICAL COMPONENT LAYOUT 1. Proof Tray 2. Proof Tray Exit Rollers 3. Vertical Transport Rollers 4. Turn Gate 5. Bin Tra

2.2 DRIVE LAYOUT1234567891011121314151618191720212223 4. Roller Drive Motor Pulley 3. Rear Roller Drive Belt 2. Proof Tray Exit RollerPulley (Rear)

2.3 ELECTRICAL COMPONENT DESCRIPTION Refer to the electrical component layout on the reverse side of the Point toPoint diagram (on waterproof paper).S

Symbol Name FunctionIndexNo.SwitchesSW1 Upper Lift LimitThe bin lift motor stops when this switch detectsthe upper limit position of the bins.22SW2 Wi

3. BASIC OPERATION3.1 NORMAL MODE AND SORT/STACK MODE Copies [A] exiting the copier pass through the entrance guide plates to theturn gate area. The t

- Sort/Stack mode - In this mode, copies pass from the turn gate section to the bins.The turn gate solenoid [A] stays off and the turn gate [B] stay

3.2 STAPLE MODE When the final set of copies has been jogged in sort mode, the staple unitstaples the stacked copies as follows: Figure 1:If the f

Figure 5:The stapler staples the copies.Figure 6:The copies are pushed back into the bin. Then the grippers open and returnto the home position.The

4. TURN GATE SECTION The turn gate directs copies to the proof tray or to the bins depending on themode selected.In the normal mode, the turn gate sol

5. ROLLER DRIVE AND CONTROLThe roller drive motor (a stepper motor) [A] drives the proof tray exit rollers[B], vertical transport rollers [C], bin tra

5. EXIT ROLLER DRIVE MECHANISM... 9-5 6. BIN DRIVE MECHANISM ... 9-6 7.

To feed copies out as fast as possible, the S/S CPU controls two motorrotation speeds.The normal speed depends on the copier’s paper transport speed.

6. BIN DRIVE AND CONTROL All the 20 bins [A] and the support bin [B] are piled up on the bin supportblocks [C]. The front and rear bin support blocks

If the bin lift motor [A] fails to stop the bins at the highest position, the rearend of the left bin lift shaft [B] activates the upper lift limit s

An end fence mylar [A] is attached to each bin entrance and an end fenceblock [B] is stuck on the mylar. These are attached with two-sided tape, ass

7. JOGGER SECTION When the Start key is pressed in the sort, stack, or staple mode, the copiersends the paper size information to the sorter stapler.

- Jogger off conditions - 1. Under the following conditions, the jogger bar does not jog after a copy isdelivered to the bin.•If paper is loaded in a

8. GRIP ASSEMBLY Figure 1:The grip assembly consists of the gripper guide bracket [A], the gripperassembly [B], and the bin side plate [C]. The majo

Figure 4:As the dual cam plate rotates further, the cam groove and the pin move thewhole gripper assembly with the gripped copies back to the stapli

9. STAPLER In automatic or manual stapling mode, the stapler motor [A] rotates when thegrip motor stops rotating after the grippers bring the stacked

When all the staple sheets are fed out of the staple cartridge, a notch cut outof the staple pressure plate [A] deactivates the staple end switch (ano

- Stapler inoperative conditions - 1. Under the following conditions, the staple mode is inoperative when thestaple key on the operation panel is pre

10. JAM DETECTION AND STAPLER ERROR10.1 SORTER JAMSThe sorter stapler main control board detects paper jams in the sorterstapler, or between the sorte

If the proof tray exit sensor or the bin exit sensor is actuated when the sorterstapler unit or the front door is opened and closed, or when the main

11. TIMING CHARTSTiming Chart 1: Normal Mode (A4 sideways, 5 copies)Timing Chart 2: Sort Mode (A4 sideways, 2 copies for 5 bins)Paper SizeBin Lift Mot

Timing Chart 3: Stapling (A4 sideways, 2 copies for 5 bins)InterfaceBin Lift MotorJogger MotorGrip MotorStapler MotorStaple ONsignalStaple countsignal

SORTER STAPLER A555

1. SPECIFICATIONS Paper Size for Bins: Sort/Stack Modes:Maximum: A3, 11 x 17"Minimum: B5, 81/2 x 11"Paper Weight for Bins: Sorting:52 ~ 157

Staple Replenishment: Cartridge exchange (2,000 staples/cartridge)Power Source: DC 24V, 5V (from the copier)Power Consumption: Average: less than 33

IMPORTANT SAFETY NOTICESPREVENTION OF PHYSICAL INJURY 1. Before disassembling or assembling parts of the copier and peripherals,make sure that the co

2. COMPONENT LAYOUT 2.1 MECHANICAL COMPONENT LAYOUT 71234561. Helical Wheels2. Jogger Plate3. Grip Assembly4. Transport Rollers5. Staple Unit6. Bins7

2.2 DRIVE LAYOUT 1. Jogger Drive Belt2. Transport Roller3. Helical Wheels4. Transport Motor5. Jogger Motor6. Wheel Drive Belts7. Bin Drive Motor8. Jo

2.3 ELECTRICAL COMPONENT DESCRIPTIONRefer to the electrical component layout on the reverse side of the Point toPoint Diagram (on waterproof paper).Sy

3. BASIC OPERATION 3.1 NORMAL MODE AND SORT/STACK MODECopies exiting the copier pass through the entrance guide plate [A]. Thetransport roller will se

The first copy of the second original is delivered to the final bin that wasused for the first original, then the final bin descends one step. The bin

3.2 STAPLE MODE The stapler is only available in sort mode.When the jogger plate has squared the final set of copies, the grip arms [A]move inside th

There are two staple modes.Automatic StaplingIn ADF mode, when staple mode is selected before pressing the Start key,copies will be delivered to each

3.3 BIN DRIVE MECHANISM The bin drive mechanism moves the bins up and down to receive copies.There are four pins on each bin. Two pins fit into the sl

3.4 BIN HOME POSITION The bin home position sensor [A] ensures that the proof tray is lower thanthe transport roller when the bins are in the home pos

3.5 JOGGER MECHANISM The jogger motor [A] drives the jogger plate [B] through the timing belts [C].The jogger is at home position when the actuator on

SAFETY AND ECOLOGICAL NOTES FOR DISPOSAL 1. Do not incinerate toner cartridges or used toner. Toner dust may ignitesuddenly when exposed to open flam

3.6 GRIP ASSEMBLY The grip assembly consists of the grip motor [A], the timing belt [B], the drivegear [C], the grip home position sensor [D], and

3.7 STAPLER UNIT The stapler motor [A] drives the staple hammer [B] using the gears [C] andthe eccentric cam [D].The roller [E] feeds the staple sheet

3.8 STAPLER SWITCH The stapler switch [A] below the grip assembly cuts the signal to the stapler.In proof mode, all bins lower and push the lever [B].

3.9 PAPER FEED AND MISFEED DETECTION TIMING – Proof Mode –*1: The value of the low speed depends on the copier.– Sorter Mode –*1: The start timing o

– Staple Mode – A4 sideways, two copies of a two-page original, after sorting, 150 mm/sSorter StaplerA555STM 7-17 A156/A160/A162

3.10 JAM DETECTION – Paper Jam –J1: The sorter entrance sensor does not turn on within 2 s after the fusing exit sensor has turned on.J2: The fus

SORTER A556

1. SPECIFICATIONSNumber of Bins: 20 bins + proof trayPaper Size for Bins: Sort/Stack Mode:Maximum - A3, 11" x 17"Minimum - A5, 51/2" x

2. MECHANICAL COMPONENT LAYOUT 1. Exit Rollers2. Paper Guide3. Roller Drive Belt4. Wheel Drive Belt5. Lift Bar6. Securing Wire7. Bins8. Proof Tray9. T

TAB INDEXTAB POSITION 1TAB POSITION 2TAB POSITION 3TAB POSITION 4TAB POSITION 5TAB POSITION 6TAB POSITION 7TAB POSITION 8OVERALL MACHINE INFORMATION

3. ELECTRICAL COMPONENT LAYOUT 1. Paper Sensor (S1) 2. Wheel Drive Motor (M1) 3. Roller Drive Motor (M2) 4. Bin Home Position Sensor (S2) 5. Whe

4. ELECTRICAL COMPONENT DESCRIPTIONSIndex No. Name Function SymbolMotors2Wheel Drive Motor Drives the wheel that changes thebin positionsM13Roller Dri

5. BASIC OPERATION- Clear Mode -When the main switch of the copier is turned on, the sorter automaticallyassumes a clear mode condition. It also chang

6. EXAMPLE OF SORT MODE OPERATIONThe following explains how the sorter handles three consecutive three-copyruns of a single original in sort mode. Thi

- Start Key Pressed for the Second Copy Run - 4) The first copy is fed to the third bin. After the paper sensor turns off, thewheel drive motor turn

7. BIN DRIVE MECHANISMThe bin drive mechanism moves the bins [A] up and down to receive copiesunder the direction of the copier CPU. The main componen

The transfer wheels have two slots [A] in them 180 degrees apart. As thetransfer wheels turn, these slots engage the pins of the bins and lift them

8. BINSThe proof tray and the twenty bins are all basically the same. Formed out ofthin flexible steel plate, they have spacers [A] at the end to hold

9. EXIT ROLLERSThe exit roller shaft is hollow and is mounted coaxially on the transfer wheelshaft [A]. When the copier sends a signal to the selected

10. TIMING CHARTT1: When the copier sends the paper feed signal to the selected paper feed station, the roller drive motor starts rotating.T2: 1.57 se

SORTER (A557)

1. SPECIFICATIONSNumber of Bins: 10 binsPaper Size for Bins: Sort/Stack ModeMaximum - A3, 11" x 17"Minimum - A5, 51/2" x 81/2"Pape

2. COMPONENT LAYOUT— Mechanical Components — 1. Bins 2. Transfer Wheel 3. Exit Roller 4. Upper Paper Guide 5. Lower Paper Guide 6. Bin Guide— El

3. ELECTRICAL COMPONENT DESCRIPTIONSSymbol Name Function Index No.MotorsM1 Roller Drive Motor This dc motor drives the lower exit rollers. 3M2 Bin Dri

4. BASIC OPERATION- Clear Mode -When the main switch of the copier is turned on, the sorter automaticallyassumes clear mode. In this mode, all copies

5. EXIT ROLLER DRIVE MECHANISMF: Transfer WheelG: Bin Drive BeltH: Bin Drive Pulley I: Exit Roller PulleyJ: Upper Paper GuideK: Lower Paper GuideL: Ro

6. BIN DRIVE MECHANISMG : Exit RollerH : Upper Paper Guide I : Lower Paper GuideThe bin drive mechanism moves the binsup and down to receive copies un

The bin home position switch [E] informs the CPU when all the bins arelowered.To move the bins up, the bin drivemotor turns clockwise (as viewed fromt

7. MISFEED DETECTION In addition to being used for the exit roller drive timing, the paper sensorchecks for misfeeds in the sorter. J1 - Paper Sensor

OVERALL MACHINE INFORMATION

1. SPECIFICATIONSConfiguration: DesktopCopy Process: Dry electrostatic transfer systemOriginals: Sheet/BookOriginal Size: Maximum A3/11" x 17&quo

SERVICE MANUAL®A156/A212...SERIESRICOH GROUP COMPANIES®®

Power Consumption:A153, and A156 copiers A157, and A160 copiersCopier Only Full System Copier Only Full SystemMaximum 1.45 KW 1.50 KW 1.45 KW 1.50 K

Dimensions:Width Depth HeightA153 copier 1030 mm (40.6") 655 mm (25.8") 606 mm (23.9")A157/A161 copier 900 mm (35.5") 655 mm (25

Copy Number Input: Ten-key pad, 1 to 999 (count up or count down)Manual Image DensitySelection:7 stepsAutomatic Reset: 1 minute is the standard settin

2. MACHINE CONFIGURATION2.1 COPIER Rev 7/95Overall MachineInformationSTM 1-5 A156/A160/A162

2.2 OPTIONAL EQUIPMENT * Only available on models FT5535, FT4527 and FT4522** Not for use on FT4022/4522 (A161/A162) copiers.Rev 7/95A156/A160/A162 1-

3. MECHANICAL COMPONENT LAYOUT– A156 copier – NOTE:The A153 copier is the same as the A156 copier except that theA153 does not have a duplex tray or a

– A160/A162 copier – NOTE:The A157/A161 copiers are the same as the A160/A162 copiersexcept that the A157 and A161 do not have a duplex tray or an LCT

Rev. 7/95 1. 3rd Mirror 2. 2nd Mirror 3. 1st Mirror 4. Exposure Lamp 5. Lens 6. Quenching Lamp 7. Drum Cleaning Blade 8. Drum Charge Roller 9.

4. PAPER PATH 4.1 NORMAL COPYING– A156 copier ––A160/A162 copier –Rev. 7/95A156/A160/A162 1-10 STM

4.2 DUPLEX COPYING – A156 copier –– A160/A162 copier –Rev. 7/95Overall MachineInformationSTM 1-11 A156/A160/A162

5. ELECTRICAL COMPONENT DESCRIPTIONSRefer to the electrical component layout and the point to point diagram on thewaterproof paper in the pocket for s

SymbolIndexNo.Description NoteM16 60Side Fence Jogger(Duplex machines only)Drives the side fence jogger to square thepaper stack.SensorsS1 27By-pass F

SymbolIndexNo.Description NoteS23 43Auto Response (Notused on A161/A162copiers)Returns the operation panel display andexits from the energy saver mode

SymbolIndexNo.Description NoteMagnetic ClutchesCL1 72Toner Supply Turns the toner supply roller to supply tonerto the development unit.CL2 71 Developm

SymbolIndexNo.Description NoteL6 2Erase After exposure, this eliminates the charge onareas of the drum that will not be used forthe image.HeatersH1 38

6. DRIVE LAYOUT6.1 ALL MODELS 1. Drum Drive Pulley 2. Drum Charge Roller Drive Gear 3. Transfer Belt Contact Clutch Gear 4. Scanner Drive Moto

6.2 A153/A156 1. Upper Paper Feed Clutch Gear (A153 only)2. Lower Paper Feed Clutch Gear3. Relay Clutch Gear6.3 A157/A160/A161/A1621. Upper Paper Fee

DETAILED DESCRIPTIONS

1. PROCESS CONTROL1.1 OVERVIEW1.1.1 Copy Process around the Drum1. DRUM CHARGEIn the dark, the drum charge roller gives a uniform negative charge to t

A156/A153A160/A157A162/A161SERVICE TRAININGMANUALRev. 4/98

2. EXPOSUREAn image of the original is reflected onto the OPC drum surface via theoptics assembly. The charge on the drum surface is dissipated in dir

6. IMAGE TRANSFERPaper is fed to the area between the drum surface and the transfer belt atthe proper time so as to align the copy paper and the devel

1.1.2 Factors Affecting Process Control In this copier, the following items are controlled during the copy process tomaintain good copy quality:•Expos

1.1.3 Process Control ProceduresThis section outlines how the machine controls the copy process based onthe inputs from various sensors.1.1.3.1 Copy I

The amount of toner supplied to the VSP pattern must remain constant. Toensure this, the machine applies a correction to the development bias forVSP p

- VL Pattern Detection and VL Correction -This is how the machine adjusts the exposure lamp voltage to compensatefor the effects of drum wear, dirty o

1.2 COPY IMAGE CONTROLCopy image control adjusts the development bias and exposure lampvoltage to take account of the reproduction ratio and image den

For ID Level 7 (lightest copies), there are four possible development biascorrection settings that can be selected with SP2-201-002, as shown below.Ta

1.2.3 ADS Correction If the user selects Auto Image Density (ADS) mode, the output of the ADSsensor is used to correct the development bias; the expos

1.3 IMAGE DENSITY CONTROL1.3.1 OverviewThe machine controls the toner supply mechanism using the toner densitysensor (TD sensor) and the image density

• VSG is measured at the start of every copy run.• VSP is detected at the end of a copy run if 10 or more copies have beenmade since VSP was last me

The idea behind ID correction is to cancel the effect on the VSP pattern ofthe decrease in the chargability of carrier with time. ID correction is don

Table 6. ID correctionStep Development Bias Correction for the VSP PatternInitial 0 V1st –40 V2nd –80 VIf no correction is applied, the charge on the

Determination of TSCTSC is an estimate of the proportion of black area in the image that is madeby the machine.(1) Detect Supply ModeIn detect supply

Table 8. Toner Supply Coefficient (%)(VT-VTREF)/0.0196Supply Ratio (SP Mode Setting)7% 15% 30% 60% ~ 0 0 0 0 01 ~ 3 71530604 ~ 5153045606 ~ 730

1.3.5 Toner Supply in Abnormal Sensor ConditionsIf any sensor errors occur under detect supply mode, toner supply mode ischanged automatically as show

1.4 DRUM POTENTIAL CONTROLThe characteristics of the drum vary with the temperature around the drum,and they change as the drum gets older. To take ac

If there is residual voltage on the drum, this area of the drum will attractsome toner, making a VR pattern. The ID sensor checks the reflectivity of

Using the same example to illustrate this, but with an ID correction of -40V,the corrections will both be -40 V this time.Note that forced VR detectio

1.4.2 VL Pattern Correction Dirty optics or deterioration of the exposure lamp decreases the intensity ofthe light that reaches the drum via the opt

It is the reader's responsibility when discussing the information contained within thisdocument to maintain a level of confidentiality that is in

VL detection is done at the following times:• Every 1000 Copies• Forced Detection: whenever a new drum or exposure lamp is installed,or exposure lamp

- Forced VL Detection -When forced VL detection (SP3-105) is executed, the CPU stores the VLreference value (VREF) in memory (see Fig. 19).VREF = init

1.4.3 T/H Correction The drum charge efficiency is the ratio of the charge actually on the drum tothe charge that was applied to the drum. It varies

Table 14. T/H Correction (Copying) - Base drum charge voltage = -1500VA153, A155, and A156 copiersDrum Charge RollerTemperature (T )Drum Rotation Time

1.5 PROCESS CONTROL DURING ABNORMAL CONDITIONSWhen an abnormal sensor condition occurs, some process controls aredisabled.AbnormalConditionProcess Con

1.6 SUMMARY1.6.1 Process Control and Sensor Detection TimingA summary of process control and correction timing is shown below.CorrectionElectricalComp

1.6.2 Process Control Checks During Machine OperationThis section shows what the machine checks and recalibrates to control thecopy process at differe

Every 1000 CopiesAfter every 1,000 copies, the machine calibrates the following referencevalues for the various processes that are used in process con

After Installing a New DrumThe technician must do a series of SP modes to reset the process controlparameters related to the drum.IMAGE DENSITY CONTRO

Development bias, drum charge voltage, and exposure lamp voltageThe following table shows how process control affects development bias, drum charge, a

2. DRUM 2.1 DRUM UNITThe drum unit consists of the components shown in the above illustration. Anorganic photoconductor (OPC) drum (diameter: 60 mm)

2.2 DRIVE MECHANISM The drive from the main motor is transmitted to the drum drive pulley via thetiming belt [A]. The pick-off pawls [B] are always i

3. DRUM CHARGE3.1 OVERVIEW This copier uses a drum charge roller system instead of a corona wirescorotron system to charge the drum. For the copy ima

3.2 DRUM CHARGE ROLLER DRIVE MECHANISM To prevent toner from adhering to the drum charge roller and to prevent thedrum charge roller from sticking t

When the drum charge roller does not contact the drum, the drum chargeroller is driven by the main motor through gears [A]. (The roller speed is 50r

3.3 DRUM CHARGE ROLLER CLEANING If the drum charge roller gets dirty, drum charge efficiency decreases. Thisaffects the copy quality, for example caus

3.4 TEMPERATURE COMPENSATION The applied voltage varies with the temperature around the drum chargeroller. The lower the temperature is, the higher

4. OPTICS4.1 OVERVIEW The optics unit reflects an image of the original on the exposure glass ontothe OPC drum. This forms a latent electrical image

The CPU monitors the temperature around the optics cavity through athermistor which is under the left scale. When the detected temperaturereaches a ce

4.2 SCANNER DRIVE In this model, a stepper motor [A] drives the scanners via a timing belt [B],scanner drive pulley [C], and two long & short sca

LEGENDPRODUCT CODE COMPANYGESTETNERRICOH SAVINA156 2635TD FT5535 9035DLA153 2635 FT5035 9035A160 2627TD FT4527 9027DLA157 2627 FT4027 9027A162 2822TD

4.3 LENS DRIVE– Vertical (Parallel to the Paper Feed Direction) –The lens vertical drive motor [A] changes the vertical position [B] of the lensin acc

4.4 HORIZONTAL LENS POSITIONING 4.4.1 Original Alignment Position There are two standard original alignment positions: one for platen modeand one fo

4.4.3 Reproduction Ratio The horizontal position of the lens has to be changed when a reproductionratio is selected. This is because the original is

4.5 3RD SCANNER DRIVE To compensate the focusing for reproduction and lens position changes, the3rd scanner (4th and 5th mirrors) position is changed

4.6 UNEVEN LIGHT INTENSITY CORRECTION The entire exposure lamp surface is frosted to ensure even exposure.To compensate for reduced light at the ed

4.7 ORIGINAL SIZE DETECTION IN PLATEN MODE There are three reflective sensors in the optics cavity for original sizedetection. The Original Width Se

Original Size Length Sensor Width SensorA4/A3 version LT/DLT version12Op345A3 11" x 17" OOOOOO— (11" x 15") O O X O O OB4 10&quo

4.8 AUTOMATIC IMAGE DENSITY CONTROL SYSTEM (ADS) Just before taking a copy in ADS (Auto Image Density Select) mode, theADS sensor [A] measures the or

During CopyingTo maintain good copy quality, the development bias changes depending onthe background density detected by the ADS sensor.In full size

5. ERASE5.1 OVERVIEW LE: Leading edge erase margin: 3.5 ± 2.5 mm SE: Side erase margin: total of both sides is 3 mm or less Lo: Original width L