Ricoh MP4002/5002 service manual Part 20

John

Member
ADF Feed Motor



image


  • ADF Feed Motor [A] drives the pick-up , feed belt [C], separation [D] and skew correction rollers [E].

    ADF Transport Motor and ADF Inverter Motor

    image

    [*]ADF Transport Motor [A] drives the registration roller , transport roller [C] and exit roller [D].
    [*]ADF Inverter Motor [E] drives the Inverter Roller [F].
    ARDF DF3010/ DF3070 (B802/D630)

    1. BASIC OPERATION​

      1. ORIGINAL SIZE DETECTION​


        image

        The original size detection mechanism consists of the five original width sensors ([A]: Width Sensor SS, : Width Sensor S, [C] Width Sensor M, [D]: Width Sensor L, [E]: Width Sensor LL) and three original length sensors ([F]: Length Sensor S, [G]: Length Sensor M, [H]: Length Sensor L). Based on the combined output of the length sensors and the width sensors, the machine can detect the size of the original. This integrated detection mechanism is detailed in the table below.


        Size
        Width SensorLength SensorArea
        SSSMLLLSMLLTA/B
        A3/SEF (297 x 420)ONONONONONONONONOO
        B4/SEF (257 x 364)ONONON--ONONON-O
        A4/SEF (210 x 297)ONON---ONON-OO
        A4/LEF (297 x 210)ONONONONON---OO
        B5/SEF (182 x 257)ON----ON---O
        B5/LEF (257 x 182)ONONON------O
        A5/SEF (148 x 210)ON--------O
        A5/LEF (210 x 148)ONON-------O
        11" x 17"/SEF (DLT)
        ON

        ON

        ON

        ON

        -

        ON

        ON

        ON

        O1

        O5
        11" x 15"/SEFONONONON-ONONON1-
        10" x 14"/SEFONONONONONONONONO-
        8.5" x 14"/SEF (LG)ONON---ONONONO2-
        8.5" x 13"/SEF (F4)ONON---ONONON2O
        8.25" x 13"/SEFONON---ONONON--
        8" x 13"/SEF (F)ONON---ONONON--
        8.5" x 11"/SEF (LT)ONON---ON--O3O6
        8.5" x 11"/LEF (LT)ONONONOn----O4O7
        7.25" x 10.5"/SEF (US EXE)
        ON

        ON

        -

        -

        -

        ON

        -

        -

        O

        -
        10.5" x 7.25"/SEF (US EXE)
        ON

        ON

        ON

        ON

        -

        -

        -

        -

        4

        -
        10" x 8"/SEFONON---ON--3-
        5.5" x 8.5"/SEF (HLT)
        -

        -

        -

        -

        -

        -

        -

        -

        O

        -
        5.5" x 8.5"/LEF (HLT)
        ON

        ON

        -

        -

        -

        -

        -

        -

        O

        -
        267 mm x 390 mmONONONON-ONONON-5
        195 mm x 267 mmONON---ON---6
        267 mm x 195 mmONONONON-----7

        image

        image

        image

        image

        image

        image

        image

        Symbols
        O: Yes (Default),
        image
        : Yes (Can select this with SP mode), ON: Paper present, LT: North America, A/B: Europe, Asia
        image

        ARDF DF3010/ DF3070 (B802/D630)

        • For
          image
          " mark, which has superscripted number, it is possible to change the original detection size with SP6-016. For example, instead of LT (O3), the machine can be set up to detect 10” x 8”
          image
          3).
        • The F size can be selected with SP5-126. The default is 8.5" x 13"
        • The machine cannot detect more than one size of original in the same job.
        [*]

        MIXED ORIGINAL SIZE MODE​

        This section explains what happens when the user selects mixed original size mode.
        Because this ARDF is a sheet-through document feeder, the method for original document width detection is the same as when the originals are the same size, but the document length detection method is different. Therefore, the scanning speed is slightly slower.

        Document length detection
        From when the skew correction sensor switches on until it switches off, the CPU counts the transport motor pulses. The number of pulses determines the length of the original.

        Feed-in cycle
        When the original size for the copy modes listed below cannot be determined, the image cannot be correctly scaled (reduced or enlarged) or processed until the original’s length has been accurately detected. The length must be determined before the image is scanned.

        Auto Reduce/Enlarge
        Centering
        Erase Center/Border
        Booklet
        Image Repeat

        The originals follow this path:
        1. Length detection
          image
          Scanning glass
          image
          Inverter table
        2. Inverter table
          image
          Scanning glass
          image
          Inverter table (restores the original order)
        3. Inverter table
          image
          Scanning glass (image scanned)
          image
          Exit tray
          Normal feed-in
        In a copy mode other than those listed above, when the reduction/enlargement ratio has been determined, the originals are scanned normally. In order to store the scanned images, a large area of memory (the detected original width x 432 mm length) is prepared. Next, only the portion of the image up to the detected original length is read from memory and printed.
        [*]

        PICK-UP AND SEPARATION​


        image

        The original is set with the image facing up. The original pushes actuator and the original set sensor is activated.
        After pressing the start button, the pick-up motor is activated and the original feed unit [A] moves down. At the same time, the ADF feed motor is activated and the pick-up roller feeds original to the feed belt [C].
        After being fed from feed belt [C], the topmost sheet is separated from the stack by the separation roller [D] and sent to the skew correction roller.
        The mechanism is an FRR system, consisting of the original feed belt [C] and separation roller [D].
        ARDF DF3010/ DF3070 (B802/D630)


        [*]

        SKEW CORRECTION​


        image

        When an original is fed into the feeder, the feed motor [A] rotates forwards. At this time, the feed belt turns but the skew correction roller does not, because these rollers have a one-way gear. (If the ADF feed motor rotates forward, the feed belt is moved. If the ADF feed motor rotates in reverse, the skew correction roller is moved.) As a result, when the leading edge of the paper gets to the skew correction roller, skew in the original is removed.
        A short time after the leading edge of the original turns on the skew correction sensor [C], the feed motor [A] turns off and rotates in reverse. At this time, the skew correction roller and the feed belt [D] both turn, and original feed continues.
        The registration roller also has the same skew correction mechanism, but only for small size originals (6, A5 or HLT). This function can be effective for all size paper with SP6-020-001.
        [*]

        SLIP DETECTION​



        image

        [A]: Separation sensor
        : Skew correction sensor
        These two sensors are used to measure the amount of slippage and to correct for this.
        The machine measures the time it takes for the original to get to the separation sensor [A] after the [Start] key is pressed.


    [*]If the original arrives at the correct time, it feeds normally.
    [*]If the original arrives late, the machine enters the slip mode.

In the slip mode, the machine measures the time for the leading edge of the original to move from the separation sensor to the skew correction sensor .

The machine uses this time to adjust the length of time that the entrance roller stays off to correct skew. This stops feed for enough time for the original to be in the correct position for feeding.

ARDF DF3010/ DF3070 (B802/D630)



  1. ORIGINAL TRANSPORT AND EXIT​


    Single-Sided Originals

    image

    The feed motor feeds the separated original to the skew correction roller [A] at maximum speed. After skew correction, the feed and transport motors feed the original through the scanning area at a lower speed (the scanning area contains the original exposure guide and DF exposure glass [C]). After scanning, the original is fed out by the transport roller [D] and exit roller [E].

    Double-Sided Originals

    image

    After skew correction, the ADF feed and transport motors drive the skew correction roller [A], registration roller , transport roller [C] and the exit roller [D]. The front side of the original is then scanned.
    When the original exit sensor [E] detects the leading edge of the original, the junction gate solenoid is activated and the junction gate [F] opens. The original is then transported towards the inverter table.
    Soon after the trailing edge of the original passes the exit sensor, the junction gate solenoid switches off and the junction gate [F] is closed. When the original has been fed onto the inverter table, the ADF inverter motor switches on. The original is then fed by the inverter roller [G], and then by the skew correction roller [A] and registration roller to the scanning area (where the reverse side will be scanned).
    image

    The original is then sent to the inverter table [H] again to be turned over. This is done so that the duplex copies will be properly stacked front side down in the exit tray in the correct order.

    Original Sensor
    During one-to-one copying, copy paper is fed to the skew correction roller in advance (while the original is still being scanned), to increase the copy speed. The original set sensor monitors the stack of originals in the feeder, and detects when the trailing edge of the last page has been fed in. The main CPU then stops the copier from feeding an unwanted extra sheet of copy paper.
    ARDF DF3010/ DF3070 (B802/D630)


    [*]

    CONDITIONS FOR JAM DETECTION​




Jam ModeDetection Timing

Initial
When turning on the machine, the skew correction sensor, separation sensor, registration sensor or exit sensor detects an original.
When the cover is closed or DF is down, the skew correction sensor, separation sensor, registration sensor or exit sensor detects an original.
When the cover is opened or DF is lifted up, the skew correction sensor, separation sensor, registration sensor or exit sensor detects an original.

Sensor stays on too long
The skew correction sensor does not turn off even if the original was fed by the maximum length of the original + 150 mm after the skew correction sensor turned on.
The registration sensor does not turn off even if the original was fed by its length x 1.5 after the registration sensor turned on.
The exit sensor does not turn off even if the original was fed by its length x 1.5 after the exit sensor turned on.

Sensor does not come on
The separation sensor does not turn on even if the original was fed by transport path length x 1.5.
The skew correction sensor does not turn on even if the original was fed by transport path length x 1.5.
The registration sensor does not turn on even if the original was fed by transport path length x 1.5 after the skew correction sensor turned on.
The exit sensor does not turn on even the original was fed by transport path length x 1.5 after the skew correction sensor turned on.


3. SERVICE TABLES​



3.1 DIP SWITCHES​



DIP-SW
Function
1234
0000Normal operating mode (Default)
0001Free run: With original: One-sided mode: 100% speed
0010Free run: With original: Two-sided mode: 100% speed
0011Free run: No original: One-sided mode: 100% speed
0100Free run: No original: Two-sided mode: 100% speed
0101Free run: With original: One-sided mode: 32% speed
0110Free run: With original: Two-sided mode: 32% speed
0111Free run: With original: One-sided mode: 70% speed
1000Free run: With original: Two-sided mode: 70% speed
1001Free run: With original: One-sided mode: 200% speed
1010Free run: With original: Two-sided mode: 200% speed
1011Transport Motor On
1100Feed Motor On
1101Transport Motor On with random mode
1110Feed Motor On with random mode
1111


D386/D634​

BRIDGE UNIT BU3030/BU3060​



R EVI SIO N HIS TORY
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BRIDGE UNIT BU3030/BU3060 (D386/D634)​

TABLE OF CONTENTS​

  1. REPLACEMENT AND ADJUSTMENT 1​

    1. BRIDGE UNIT CONTROL BOARD 1
    2. BRIDGE UNIT DRIVE MOTOR 2
    3. TRAY EXIT SENSOR 3
    4. RELAY SENSOR 4
  2. DETAILS 5​

    1. MECHANICAL COMPONENT LAYOUT 5
    2. DRIVE LAYOUT 6
    3. ELECTRICAL COMPONENT LAYOUT 7
    4. ELECTRICAL COMPONENT DESCRIPTION 8
    5. JUNCTION GATE MECHANISM 9

      READ THIS FIRST​


      Safety and Symbols​

      Replacement Procedure Safety​


      image
      • Turn off the main power switch and unplug the machine before beginning any of the replacement procedures in this manual.
When taking apart the bridge unit, first take the unit out of the copier. Symbols Used in this Manual

This manual uses the following symbols.

: See or Refer to

: Screws

: Connector

: Clip ring

: E-ring



  1. REPLACEMENT AND ADJUSTMENT​

    1. BRIDGE UNIT CONTROL BOARD​


      image

      1. Bridge unit ( "Installation Procedure" in the base copier manual)
      2. Rear cover [A] ( x 2)
        Bridge Unit BU3030/ BU3060 (D386/D634)

      3. Bridge unit control board ( x 3,  x 4)

      [*]

      BRIDGE UNIT DRIVE MOTOR​


      image


      1. Bridge unit ( "Installation Procedure" in the base copier manual)
      2. Rear cover ( "Bridge Unit Control Board")
      3. Bracket [A] ( x 3,  x 2)
      4. Bridge unit drive motor ( x 4,  x 1)

      [*]

      TRAY EXIT SENSOR​


      image


      1. Bridge unit ( "Installation Procedure" in the base copier manual)
      2. Rear cover ( "Bridge Unit Control Board")
      3. Paper tray [A]
      4. Exit guide ( x 1)

        image

        Bridge Unit BU3030/ BU3060 (D386/D634)


        [*]Tray exit sensor [C] ( x 1)

      [*]

      RELAY SENSOR​







image


  1. Bridge unit ( "Installation Procedure" in the base copier manual)
  2. Paper tray [A]
  3. Relay sensor ( x 1)



  1. DETAILS​


    Bridge Unit BU3030/ BU3060 (D386/D634)
    1. Relay Sensor
    2. 2nd Transport Roller
    3. Left Exit Roller
    4. Paper Tray
    1. MECHANICAL COMPONENT LAYOUT​


      image

      1. Upper Exit Roller
      2. Tray Exit Sensor
      3. Junction Gate
      4. 1st Transport Roller
    2. DRIVE LAYOUT​


      image
      1. Left Exit Roller
      2. 2nd Transport Roller
      3. 1st Transport Roller
      4. Upper Exit Roller
      5. Bridge Unit Drive Motor
    3. ELECTRICAL COMPONENT LAYOUT​



      image
      1. Left Guide Switch
      2. Right Guide Switch
      3. Junction Gate Solenoid
      4. Tray Exit Sensor
      5. Bridge Unit Control Board
      6. Bridge Unit Drive Motor
        Bridge Unit BU3030/ BU3060 (D386/D634)

      7. Relay Sensor
    4. ELECTRICAL COMPONENT DESCRIPTION​


      SymbolNameFunctionIndex No.
      Motors
      M1Drive MotorDrives the bridge unit.6
      Sensors
      S1Tray ExitChecks for misfeeds.4
      S2RelayChecks for misfeeds.7
      Switches
      SW2Right GuideDetects when the right guide is opened.2
      SW3Left GuideDetects when the left guide is opened.1
      Solenoids

      SOL1

      Junction Gate
      Moves the junction gate to direct the paper to the upper tray (on top of the bridge unit) or to the finisher.
      3
      PCBs

      PCB1
      Bridge Unit Control Board
      Controls the bridge unit.

      5
    5. JUNCTION GATE MECHANISM​



image




The junction gate [A] directs any paper reaching the bridge unit to either the upper tray (on top of the bridge unit) or to the finisher, depending on which has been selected.

Bridge Unit BU3030/ BU3060 (D386/D634)



If the junction gate solenoid has been activated, the junction gate [A] points downward and directs the paper to the upper tray (dotted line path in illustration). When the solenoid is off, the junction gate points upward and the paper is fed out to the finisher [C] by the transport and left exit rollers (solid line).



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PB3110(D537)/PB3130(D580) PAPER FEED UNIT​

PAPER FEED UNIT (D537/D580)​

TABLE OF CONTENTS​

  1. REPLACEMENT AND ADJUSTMENT 1​

    1. EXTERIOR COVER 1
      1. REAR COVER 1
    2. ELECTRICAL COMPONENTS 2
      1. LIFT MOTORS 2
      2. UPPER AND LOWER PAPER FEED CLUTCHES 3
      3. PAPER FEED MOTOR 4
      4. MAIN BOARD 4
    3. FEED 5
      1. PAPER FEED UNIT 5
      2. PICK-UP, PAPER FEED AND SEPARATION ROLLERS 6
      3. LIFT, PAPER END, AND RELAY SENSORS 7


  1. REPLACEMENT AND ADJUSTMENT​

    1. EXTERIOR COVER​



      Paper Feed Unit PB3110/ PB3130 D537/D580
      1. REAR COVER​


        image
        1. Securing brackets [A]
          image
          x 1 each)
        2. Rear cover
          image
          x 2)


      [*]

      ELECTRICAL COMPONENTS​


      1. LIFT MOTORS​


        image
        1. Rear cover
          image
          "Rear Cover")
        2. Lift motors [A]
          image
          x 2,
          image
          x 1 each)


        Paper Feed Unit PB3110/ PB3130 D537/D580


        [*]

        UPPER AND LOWER PAPER FEED CLUTCHES​


        image

        1. Rear cover
          image
          "Rear Cover")
        2. Upper paper feed gear unit [A]
          image
          x 3,
          image
          x 1)
        3. Upper paper feed clutch bracket
          image
          x 1,
          image
          x 2, bushing x 1)
          [*]Upper paper feed clutch [C]

          image

          [*]Lower paper feed clutch bracket [D]
          image
          x 1, bushing x 1,
          image
          x 2)
          [*]Lower paper feed clutch [E]
          image
          x 1)

        [*]

        PAPER FEED MOTOR​


        image

        1. Rear cover
          image
          "Rear Cover")
        2. Paper feed motor [A]
          image
          x 1,
          image
          x 2)

          image
          • When installing the paper feed motor, make sure that the gear of the paper feed motor holds the timing belt .


        [*]

        MAIN BOARD​



        image

        1. Rear cover
          image
          "Rear Cover")
        2. Main board [A] (All
          image
          s,
          image
          x 2, snap pin x 2)

      [*]

      FEED​



      Paper Feed Unit PB3110/ PB3130 D537/D580

      1. PAPER FEED UNIT​


        image
        1. Right cover [A]
          image
          x 2)
        2. Vertical transport guide of the paper feed unit

          image

          [*]Pull the tray 3 (or 4).
          [*]Paper guide [C]
          [*]Paper feed unit [D]
          image
          x 2,
          image
          x 1,
          image
          x 2)
          When replacing the paper feed unit of tray 4, do the same.

        [*]

        PICK-UP, PAPER FEED AND SEPARATION ROLLERS​


        1. Paper feed unit ( "Paper Feed Unit)

        1. Roller holder [A]
          image
          x 1)
        2. Pick-up roller
          [*]Paper feed roller [C]
          [*]Separation roller [D]
          image
          x 1)


        Paper Feed Unit PB3110/ PB3130 D537/D580


        [*]

        LIFT, PAPER END, AND RELAY SENSORS​






image


  1. Paper feed unit
    image
    "Paper Feed Unit")
  2. Vertical transport sensor bracket [A]
    image
    x 1)
  3. Vertical transport sensor
    image
    x 1)
    [*]Paper feed sensor bracket [C]
    image
    x 1)
    [*]Paper feed sensor [D]
    image
    x 1)
    [*]Paper end sensor filler [E]
    [*]Paper end sensor [F]
    image
    x 1)
    [*]Lift sensor [G]
    image
    x 1)



R EVI SIO N HIS TORY
PageDateAdded/ Updated/ New
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PB3110(D538)/PB3140(D581) LARGE CAPACITY TRAY​

LARGE CAPACITY TRAY (D538/D581)​

TABLE OF CONTENTS​

  1. REPLACEMENT AND ADJUSTMENT 1​

    1. EXTERIOR COVER 1
      1. LEFT AND RIGHT TRAY 1
      2. CHANGING THE TRAY SIZE 2
    2. ELECTRICAL COMPONENTS 3
      1. PAPER HEIGHT SENSORS ON PAPER STORAGE SIDE 3
      2. END FENCE HP SENSOR/PAPER END SENSOR 2 3
      3. TRAY LIFT MOTOR 4
      4. TRAY MOTOR 5
      5. MAIN BOARD 5
      6. STACK TRANSPORT CLUTCH 6
    3. FEED 7
      1. PAPER FEED UNIT 7
      2. PICK-UP, FEED AND SEPARATION ROLLERS 8
      3. PAPER FEED, PAPER END, LIFT AND RELAY SENSORS 9


  1. REPLACEMENT AND ADJUSTMENT​

    1. EXTERIOR COVER​

      1. LEFT AND RIGHT TRAY​


        image


        Large Capacity Tray PB3110/ PB3140 D538/D581
        1. Pull the LCT drawer.

          image
          • If the right tray comes up with the left tray, push the right tray into the LCT.
        2. Left tray [A]
          image
          x 2)
          image
        3. Remove the right tray pressing down the stopper [C].

          image

          • When reinstalling the tray, set the tray on the guide rail and carefully push the tray in, making sure to keep the tray level.

        [*]

        CHANGING THE TRAY SIZE​


        image

        1. Remove the fence screws
          image
          x 5).
        2. Change the position of the fences.

          image
          • Before fastening the screws, set paper in the tray.

      [*]

      ELECTRICAL COMPONENTS​


      1. PAPER HEIGHT SENSORS ON PAPER STORAGE SIDE​


        1. Tray ( "Left and Right Tray")


        Large Capacity Tray PB3110/ PB3140 D538/D581

    [*]Rear fence [A]
    image
    x 1)
    [*]Rear fence bracket
    image
    x 2)
    [*]Paper height sensors [C]
    image
    x 1 each)

      1. END FENCE HP SENSOR/PAPER END SENSOR 2​


        image
        1. Bottom cover [D]
          image
          x 1)
        2. End fence HP sensor [E]
          image
          x 1)
        3. Paper end sensor 2 (paper storage side) [F]
          image
          x 1)
      2. TRAY LIFT MOTOR​


        1. Securing brackets [A] ( x 1 each)
        1. Rear cover
          image
          x 2)

          image

          [*]Tray lift motor [C]
          image
          x 1,
          image
          x 3)

        [*]

        TRAY MOTOR​


        image


        Large Capacity Tray PB3110/ PB3140 D538/D581

        1. Rear cover
          image
          "Tray Lift Motor")
        2. Tray motor [A]
          image
          x 1,
          image
          x 2)

          image
          • When installing the tray motor, make sure that the gear of the tray motor holds the timing belt .


        [*]

        MAIN BOARD​


        image

        1. Rear cover
          image
          "Tray Lift Motor" )
        2. Main board [A] (All
          image
          s,
          image
          x 2, snap x 2)
        [*]

        STACK TRANSPORT CLUTCH​


        image

        1. Rear cover
          image
          "Tray Lift Motor")
        2. Stack transport clutch [A]
          image
          x 1,
          image
          x 1)

      [*]

      FEED​


      1. PAPER FEED UNIT​


        image


        Large Capacity Tray PB3110/ PB3140 D538/D581
        1. Right cover [A]
        2. Open the vertical guide plate
          [*]Guide plate [C]

          image

          [*]Pull the LCT drawer [D].
          [*]Paper feed unit [E]
          image
          x
          image
          x 1)

        [*]

        PICK-UP, FEED AND SEPARATION ROLLERS​


        image

        1. Paper feed unit
          image
          "Paper Feed Unit")
        2. Separation roller [A]
          image
          x 1)
        3. Roller holder
          image
          x 1)
          [*]Feed roller [C] and pick-up roller [D]

        [*]

        PAPER FEED, PAPER END, LIFT AND RELAY SENSORS​






image




Large Capacity Tray PB3110/ PB3140 D538/D581



  1. Paper feed unit
    image
    "Paper Feed Unit")
  2. Vertical transport sensor bracket [A]
    image
    x 1,
    image
    x 1)
  3. Relay sensor
    [*]Paper feed sensor bracket [C]
    [*]Paper feed sensor [D]
    [*]Paper end feeler [E]
    [*]Paper end sensor holder [F] (hook x 3)
    [*]Paper end sensor [G]
    image
    x 1, hook x 3)
    [*]Lift sensor
    image
    x 1, hook x 3)
 
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