Ricoh MP C2004/C2504 Service Manual Part 8

J

John

Member

  1. PREPARATION BEFORE OPERATION CHECK​

    1. Clean the exposure glasses (for DF and book scanning).
    2. Enter the user tools mode.
    3. Do the "Automatic Color Calibration (ACC)" for the copier mode & printer mode as follows:
      • Print the ACC test pattern (User Tools > Maintenance > ACC > Start).
      • Put the printout on the exposure glass.
      • Put 10 sheets of white paper on the test chart. This ensures the precise ACC adjustment.
      • Close the ARDF or the platen cover.
      • Press "Start Scanning" on the LCD. Then, the machine starts the ACC.
    4. Exit the User Tools mode, and then enter the SP mode.
    5. Perform line adjustment.
      SP2-111-004: Forced Line Position Adj. Mode d
      The result can be checked with SP2-194-007 (MUSIC Execution Result Execution Result) (0: Success, 1: Failure).
      Also, results for each color can be checked with SP2-194-010 to 013.
    6. Exit the SP mode.
    SP Descriptions
    • SP2-194-007 (MUSIC Execution Result: Execution Result)
      Displays the result code of MUSIC adjustment. 0: Success
      1: Failure
    • SP2-194-010 to 013 (MUSIC Execution Result: Error Result C,M, Y, K)
      Displays the result code of MUSIC adjustment for each color. 0: Not done
    1: Completed successfully 2: Cannot detect patterns
    3: Fewer lines on the pattern than the target 4: Out of the adjustment range
    5 to 9: Not used

  2. OPERATION CHECK​

Check if the sample image has been copied normally.





Preventive Maintenance



REPLACEMENT AND ADJUSTMENT​



RE V IS ION H IST ORY
PageDateAdded/ Updated/ New
None




Replacement and Adjustment



  1. REPLACEMENT AND ADJUSTMENT​

    1. NOTES ON THE MAIN POWER SWITCH​

      1. PUSH SWITCH​

        The main power button of this machine has been changed to a push-button switch (push button) from the conventional rocker switch. The push switch has characteristics and specifications different from the rocker switch. Care must be taken when replacing and adjusting parts.

        Characteristics of the Push Switch (DC Switch)
        Power is supplied to the machine even when the main power switch is turned OFF.
        The push switch in this machine uses DC (direct current). Therefore, if the AC power cord is connected to an electrical outlet, power is supplied to the controller board, the operation unit and other modules even when the main power is turned OFF. When replacing the controller board and the operation unit in this state, not only these boards, it will damage other electrical components.
        So, when performing maintenance work such as replacing parts, in addition to turning off the main power with the push switch, always unplug the AC power cord.
        When you disconnect the power cord from the AC wall outlet, inside the machine there is still residual charge.
        When you disconnect the power cord from the AC wall outlet, inside the machine for a while there is still residual charge. Therefore, if you remove boards in this state, it can cause a blown fuse or memory failure.
        • How to remove the residual charge inside the machine
          After you unplug the power cord from the AC wall outlet, in order to remove the residual charge from inside the machine, be sure to press the main power switch. Thus, the charge remaining in the machine is released, and it is possible to remove boards.
          When you reconnect the AC power cord into an AC wall outlet, the machine will start automatically.
          In order to remove the residual charge, push the main power switch while you disconnect the AC power cord. At that time, the power ON flag inside the machine is set. Therefore, after you finish work on the machine and reconnect the power cord to the AC, even if you do not press the main power switch, the machine will start automatically and the moving parts will begin to move. When working on moving parts, be careful that fingers or clothes do not get caught.

        • Automatic restart deals with cases when you accidentally unplugged the AC power cord or unexpected power outages. By keeping the power flag ON, after the resumption of power, the machine will start up automatically.
          In rare cases, when you reconnect the AC power cord to a power outlet, the machine does not start automatically. In this case, the machine has not failed. The cause is due to the timing of releasing the residual charge. If you press the main power switch while the residual charge was already released, the power ON flag will not be set. At this time, start the machine manually by pressing the main power switch.

          Shutdown Method
          1. Press the main power switch [A] on the machine.
            image
          2. The shutdown message appears. After the shutdown process, the main power is turned off automatically.
            The operation panel and the main power indicator are turned off when the machine completes the shutdown.
            • Even after the shutdown message disappears, do not disconnect the power cord while the main power indicator [A] is flashing to indicate that the machine is still shutting down.
              image



            • Before removing and adjusting electrical boards, do the following procedure. Otherwise, the board can be damaged by the residual charge inside the machine and must be replaced.
          Replacement and Adjustment
          1. Take out the power cord after shutdown.
          2. Press the power switch for a second to remove the residual charge inside the machine.

            Forced Shutdown
            In case normal shutdown does not complete for some reason, the machine has a forced shutdown function.
            To make a forced shutdown, press and hold the main power switch for 6 seconds. In general, do not use the forced shutdown.
            • Forced shutdown may damage the hard disk and memory, and can cause damage to the machine. Use a forced shutdown only if it is unavoidable.

    2. BEFOREHAND​


      • Turn off the main power switch and disconnect the power cord.
      • After replacing, make sure that all harnesses that were removed are connected up again and secured in their clamps.

    3. SPECIAL TOOLS​


      ItemPart NumberDescriptionQ’tyUnique or Common

      1
      A1849501      		Scanner Positioning Pin (2pcs/set)
      1
      C (General)
      2B6455020SD Card (1GB)1C (General)
      3B6455060SD Card (16GB)1C (General)
      452039502Silicone Grease G-5011C (General)

      5
      A2579300      		Grease Barrierta – S552R
      1
      C (General)
      6C401950320× Magnification Scope1C (General)

      7
      VSSG9002      		FLUOTRIBO MG GREASE: 100G
      1
      C (General)

      8
      A0929503      		C4 Color Test Chart (3 pcs/set)
      1
      C (General)

      • A PC (Personal Computer) is required for creating the Encryption key file on an SD card when replacing the controller board in which HDD encryption has been enabled.
      Replacement and Adjustment

    4. EXTERIOR COVERS​


      Precaution Concerning Stabilizers
      The stabilizers are necessary for meeting the requirements of IEC60950-1, the international standard for safety.
      The aim of these stabilizers is to prevent the products, which are heavy, from toppling as a result of people running into or leaning onto the products, which can lead to serious accidents such as persons becoming trapped under the product. (U.S.: UL60950-1, Europe:
      EN60950-1)
      Therefore, removal of such stabilizers must always be with the consent of the customer. Do not remove them using only your own judgment.

      1. OVERVIEW​


        Front and Rear Side Covers

        image


        No.Cover name
        1Waste toner cover
        2Front upper cover
        3Front cover
        4Main power switch cover
        5Rear cover
        6Rear lower cover

        Replacement and Adjustment

        Right and Left Side Covers

        image


        No.Cover name
        1Right upper cover
        2Right door
        3Right rear cover
        4Left rear cover
        5Controller cover
        6Left cover
        7Upper left cover
        Paper Exit Covers

        image



        No.Cover name
        1Paper exit tray
        2Inverter tray
        3Paper exit cover
        4Paper exit lower cover

        Inner Covers

        image


        No.Cover name
        1Paper exit front cover
        2Inner upper cover
        3Inner lower cover

        Replacement and Adjustment

      2. FRONT COVER​

        1. Open the front cover [A].

          image
        2. Unhook the belt’s tip and detach the belt [A].

          image
        3. Pressing down the stopper, slide the front cover [A] to the right and detach it.
        image

      3. CONTROLLER COVER​

        1. Controller cover [A]
        image


      4. UPPER LEFT COVER​



        image
        • Each part enclosed by a blue circle has a tab. Be careful not to damage it when attaching and detaching.
          1. Open the front cover.
          2. Paper exit tray (page 4-21)
          3. Upper left cover [A]
            Slide the cover in the direction of the blue arrow.
          image



          Replacement and Adjustment

      5. LEFT REAR COVER​

        1. Upper left cover (page 4-10)
        2. Left Rear Cover [A]
        image

      6. LEFT COVER​


        • Each part enclosed by a blue circle has a tab. Be careful not to damage it when attaching and detaching.

          image

          1. Controller cover (page 4-10)
          2. Ozone filter/Dust filter box (page 4-207)
          3. Upper left cover (page 4-10)
          4. Left rear cover (page 4-11)
          5. Open the 2nd paper feed tray slightly.
            image



            Replacement and Adjustment

          6. Left cover [A]
            Remove it while pressing down.

            image

            Order to remove

            image
            1. Paper exit tray
            2. Controller cover
            3. Ozone filter/Dust filter box
            4. Front cover
            5. Upper left cover
            6. Left rear cover
            7. 2nd paper feed tray
            8. Left cover

      7. REAR COVER​


        • There are tabs (left-facing) on the back face of the rear cover. When fitting or removing the cover, take care not to damage it.
          1. Rear cover [A]

          image


          Slightly bend the cover to release the tabs behind the parts indicated by red circles and release the cover.
          image


          Replacement and Adjustment

      8. REAR LOWER COVER​

        1. Rear cover (page 4-14)
        2. Rear lower cover [A]
        image

      9. RIGHT REAR COVER​

        1. Open the right door.
        2. Right rear cover [A]
          image
          x4, among them, tapping screw x1)

          image


          • When installing, insert the projections [A] in the holes , taking care not to trap the harness inside.

          image



        Replacement and Adjustment


        [*]

        RIGHT UPPER COVER​

        1. Front upper cover (page 4-17)
        2. Right upper cover [A]
        image



        [*]

        FRONT UPPER COVER​

        1. Open the right door.
        2. Small cover [A]
          image
        3. Remove the screw and the connector, and then remove the front upper cover [A].

          image


          • Remember that there are three tabs at the positions in the red arrows.
          • Tilt the operation panel upward to a horizontal position, and then remove the front upper cover [A].

          image




        [*]

        PROXIMITY SENSOR (HUMAN DETECTION SENSOR)​

        1. Front upper cover (page 4-17)
        2. Two connectors

          image
        3. Bracket [A]
          image
        4. Proximity sensor (Human detection sensor) [A]
          image


        Replacement and Adjustment


        [*]

        MAIN POWER SWITCH COVER​

        1. Pull out the paper trays 1 and 2.
          image
        2. Main power switch cover [A].
        image

        [*]

        WASTE TONER COVER​

        1. Front cover (page 4-9)
        2. Open the waste toner cover [A].

          image
        3. Waste Toner Cover [A]
        image



        [*]

        INVERTER TRAY​

        1. Inverter Tray [A]

        image


        Replacement and Adjustment


        [*]

        PAPER EXIT TRAY​

        1. Paper Exit Tray [A]

        image



        [*]

        PAPER EXIT COVER​

        1. Front upper cover (page 4-17)
        2. Paper exit tray (page 4-21)
        3. Inverter Tray (page 4-20)
        4. Paper exit cover [A]
          image
        [*]

        PAPER EXIT LOWER COVER​

        1. Left rear cover (page 4-11)
        2. Paper exit cover (page 4-21)
        3. Connector cover [A].
          image
        4. Paper exit lower cover [A]
        image


        Replacement and Adjustment


        [*]

        PAPER EXIT FRONT COVER​

        1. Front upper cover (page 4-17)
        2. Paper exit lower cover (page 4-22)
        3. Paper exit front cover [A]
        image



        [*]

        INNER UPPER COVER​

        1. Open the front cover, and remove the belt. (page 4-9)
        2. Open the right door.
        3. Paper exit front cover (page 4-23)
        4. Image transfer belt unit (page 4-71)
        5. Inner upper cover [A]
          image
        [*]

        INNER LOWER COVER​



    [*]Front cover (page 4-9)
    [*]Inner upper cover (page 4-23)
    [*]PCDU cover (Y) [A]

    image

    [*]Waste toner cover (page 4-20)
    [*]Inner lower cover [A]

image




Replacement and Adjustment



    1. SMART OPERATION PANEL​


      This section explains how to remove the Smart Operation Panel from the machine. For details about disassembling the Smart Operation Panel, See the service manual for Smart Operation Panel 2nd Generation.

      1. OPERATION PANEL UNIT​

        1. Scanner front cover (page 4-33)
        2. Holding down both the sides of the operation panel upper cover [A], unhook the tabs (indicated by blue circles) and remove the cover.
          image
        3. Operation panel [A]

          image
        4. Open the platen cover or ADF.
        5. Spread a cloth or service mat [A] on the exposure glass to protect the display. Place the operation panel on the exposure glass so that the display faces down.
          image
        6. Rear center cover [A]

          image
        7. Disconnect the USB cable [A].

          image
        8. Left small cover [A], right small cover

          image

          [*]Right hinge cover [A] (Hook x 2)
          image


          Replacement and Adjustment


          [*]Left hinge cover [A], right cover

          image

          [*]Hinges [A]


        image

        [*]

        USB CABLE​

        1. Rear cover (page 4-14)
        2. Scanner right cover (page 4-34)
        3. Controller box cover (page 4-182)
        4. Disconnect the USB cable [A]

          image


        5. Remove the clamps on the cables under the scanner unit.

          image


          When removing a clamp, insert a long flathead screwdriver or such a tool from the side to remove it.
          image

          image




          Replacement and Adjustment
          • The cable has a set of 2 cable ties. When attaching the cable, position the clamp between the two cable ties.
          image

      [*]

      ADF​


      1. ADF REMOVAL​

        1. Rear cover (page 4-14)
        2. Cable bracket and connector SPDF DF3100
          image

          ARDF DF3090

          image



          Replacement and Adjustment

        3. Screws on the ADF base. SPDF DF3100
          image

          ARDF DF3090
          image
        4. Slowly and carefully (the ADF is heavy) lift the ADF [A] off the machine.
        5. Set the ADF on its edge on the floor, and then lean it against a wall .

          image


          image

          • To prevent damage to the fragile feelers [A] of the ADF position sensor, never lay the ADF on a flat surface as shown below.

          • If the SPDF DF3100 is being replaced, do SP4-730-002 after the new SPDF has been installed.
            SP descriptions
          • SP4-730-002 (FROM Main Factory Setting Execution ON/OFF)
          Copies the parameters written in FROM in the SPDF to the engine board in the MFP. This SP is only for the SPDF models.


        Replacement and Adjustment


      [*]

      SCANNER UNIT​


      1. BEFORE YOU BEGIN​

        There is no SIO (Scanner Interface Board) in this machine. The functions of the SIO of the previous machine are controlled by the IPU. Harnesses of the scanner unit connect directly to the IPU in the controller box on the back of the machine.
        image


      2. SCANNER EXTERIOR​


        Scanner Front Cover
        1. Scanner front cover [A]

        image

        Scanner Right Cover
        1. Remove the screw.

          image
        2. Scanner right cover [A]
          Remove the hook at the top, and then slide the cover towards the rear.

        image


        Replacement and Adjustment

        Scanner Left Cover
        1. Scanner front cover (page 4-33)
        2. Scanner left cover [A]
        image


        Scanner Upper Cover
        1. Platen cover or ADF
        2. Rear cover (page 4-14)
        3. Scanner Upper Cover [A]
        image

      3. EXPOSURE GLASS​

        1. Open the platen cover or ADF.
        2. Scanner right cover (page 4-34)
        3. Scale [A]

          image


        4. Sheet-through exposure glass [A]
          image
        5. Rear scale [A]
          image
        6. Left scale and exposure glass [A]

          • The exposure glass and the left scale are attached with double-sided tape.


            Replacement and Adjustment

          • When installing, please follow the points below:
          • Install the sheet-through exposure glass with the mark [A] at the rear left corner.
          • Set so that the locating hole of the left scale fits over the locating boss of the front/rear frame.
          image

      4. SCANNER CARRIAGE​

        1. Exposure glass (page 4-36)
        2. Scanner front cover (page 4-33)
        3. Scanner carriage front cover [A]

          image


        4. Move the scanner carriage [A] to the indicated position as shown.

          image
        5. Loosen the screw, remove the spring [A], and then remove the belt .

          image

          [*]Turn the scanner carriage over and place it on the frame [A].
          image



          • When holding the scanner carriage, be careful not to touch the circuit board [A], lens , and mirror [C].
            image



            Replacement and Adjustment


          [*]Belt [A]

          image



          [*]Lower the lock lever [A] and disconnect the FFC .

          image

          [*]Ferrite core [A], Mylar sheet (Hook x 4)
          image



          [*]Scanner carriage

          image



          • When attaching the scanner carriage, hold the carriage with the screw [A] loosened and move the carriage back and forth to the sides twice to have the belt stretch evenly. Then, fasten the screw [A].
            image



          • After replacing the scanner carriage, enter the values supplied with the carriage in the following SP
            • SP4-871-002 (Distortion Correction Distortion Initialization)
            • SP4-880-001 (Dot shift amount between R Line and G Line).
            • SP4-880-002 (Dot shift amount between G Line and B Line).
          To apply the specified settings, turn the power off and then back on.

        The specified values are cleared when the NVRAM is initialized, so be sure to keep the supplied sheet showing the values in the machine.

        Replacement and Adjustment

        Cleaning the Scanner Carriage Mirror
        1. Exposure glass (page 4-36)
        2. Scanner carriage front cover [A]

          image
        3. Move the scanner carriage [A] to the indicated position as shown.

          image
        4. Resin cover [A] (Hook x 3)

          image
        5. Open the metal cover [A]
          image
        6. Wipe clean the mirror with a dry cloth.

          image


          • When reattaching the metal cover [A], fasten the screws in the order of "1", "2", and "3".
            image



          • When attaching the resin cover, insert its tip under the metal frame.
          image


        Replacement and Adjustment


        [*]

        SCANNER MOTOR​

        1. Scanner upper cover (page 4-35)
        2. Rear cover (page 4-14)
        3. Grounding plate [A]

          image
        4. Spring [A]
          image
        5. Scanner motor with bracket [A]
          image
        6. Bracket [A]
        image



        [*]

        APS SENSOR​

        1. Exposure glass (page 4-36)
        2. APS sensor harness cover [A]

          image


        3. APS sensors [A] (Hook x 4)
          image


        Replacement and Adjustment


        [*]

        SCANNER HP SENSOR​

        1. Exposure glass (page 4-36)
        2. Slide the scanner carriage [A] in the direction of the arrow.
          image
        3. Scanner HP Sensor [A] (Hook x 3)
        image

        [*]

        ARDF/PLATEN COVER SENSOR​

        1. Scanner upper cover (page 4-35)
        2. ARDF/Platen cover sensor [A]
          image


        [*]

        SCANNER FFC​



    [*]Exposure glass (page 4-36)
    [*]Remove the FFC from the scanner carriage (page 4-37)
    [*]Original size sensor harness cover [A]

    image



    [*]Remove the double-sided tape.

image


When reattaching the same part, apply a double-sided tape again.
 

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