3Disc Fire CR dental Service Manual
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3Disc Fire CR dental Service Manual

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Service Manual
Hardware revisions AH and later.

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Summary of Contents for 3Disc Fire CR dental

  • Page 1 Service Manual Hardware revisions AH and later.
  • Page 3 Rev: 1 Sep 2016 Part No.: CR-FPM-11-021-EN 3DISC, FireCR, FireCR Dental and Quantor are trademarks of 3D Imaging & Simulations Corp, South Korea, and its affiliates. All other trademarks are held by their respective owners and are used in an editorial fashion with no intention of infringement.

  • Page 4: Table Of Contents

    Table of contents Parts removal/replacement Disassembly ........................5  Replacing the door assembly ........................ 10  Replacing the covers assembly ......................10  Replacing the top cover ......................... 10  Replacing the side cover ........................10  Replacing the inner cover ........................11  Replacing the bottom cover ........................11  Replacing the rear cover ........................
  • Page 5 This manual covers replacement of hardware for revision AH and later. The hardware revision of the unit can be identified using the serial number on the back of the unit. The centre part of the serial number contains two decimals, and 4 alphanumerical characters, the last two identifies the hardware revision.

  • Page 6: Parts Removal/Replacement

    Parts removal/replacement Disassembly 1. Set the reader into “sleep mode” by pressing on the half-moon symbol on the display. 2. Switch off the reader on the back and disconnect all cables. Power inlet Power switch USB socket Ethernet...
  • Page 7 3. Remove the 4 screws using a Philips #2 screwdriver and remove the rear cover. 4. Push the door inwards and upwards to gain a decent handhold on the inside of the front cover (1), then pull outwards and upwards to remove the front cover from the rest of the unit (2). 5.
  • Page 8 6. Tip the lock of the ribbon cable and disconnect the ribbon cable (1) and motor power cable (2) from the TFT LCD display driver board. 7. Put the reader on the side being careful not to damage it, and remove the 6 screws using a Philips #2 screwdriver.
  • Page 9 8. Set the reader back upright and carefully lift the top cover off.
  • Page 10 9. Remove the 4 screws fastening the inner chassis using a 2.5 mm hex key and lift it off.

  • Page 11: Replacing The Door Assembly

    Replacing the door assembly 1. Follow step 1, 2, 4, 5 and 6 of Disassembly. 2. Replace the door assembly and install in reverse order. 3. Calibrate the LCD as described in the LCD calibration section. Replacing the covers assembly 1.

  • Page 12: Replacing The Inner Cover

    Replacing the inner cover 1. Follow step 1 through 9 of Disassembly. 2. Replace the inner cover and install in reverse order. Replacing the bottom cover 1. Follow step 1 through 8 of Disassembly. 2. Put the scanner onto its side and remove the 6 screws using a 2.5mm hex key and remove the bottom cover.
  • Page 13 4. Remove the 3 screws using a 2.5 mm hex key. 5. Replace the front board and install in reverse order.

  • Page 14: Replacing The Left Psd Sensor

    Replacing the left PSD sensor 1. Follow step 1 through 9 of Disassembly. 2. Remove the 2 screws using a 2.5 mm hex key. 3. Cut the cable tie and disconnect the PSD sensor from the front board PCB. 4. Replace the left PSD and install in reverse order.

  • Page 15: Replacing The Laser Module

    Replacing the laser module 1. Follow step 1 through 9 of Disassembly. 2. Disconnect the BLDC motor (1) and laser (2) from the front board. 3. Remove the 3 screws using a 2.5 mm hex key letting the front board hang loose. 4.

  • Page 16: Replacing The Optics Bracket

    Replacing the optics bracket 1. Follow step 1 through 9 of Disassembly. 2. Disconnect from the bottom board. 3. Unlock (1) and disconnect (2) the ribbon cable from the front board. 4. Put the scanner onto its side and remove the 6 screws using a 2.5mm hex key and remove the bottom cover.
  • Page 17 5. Remove the 2 screws fastening the left PSD using a 2.5 mm hex key. 6. Rotate the unit to the other side and remove the 2 screws fastening the right PSD using a 2.5 mm hex key. 7. Cut the cable tie and disconnect the eraser from the front board.
  • Page 18 8. Remove the 4 screws fastening the bracket using 3 mm hex key. 9. Carefully lift the optics assembly out of the unit. 10. Remove the 4 screws from the bracket using a 2.5 mm hex key. 11. Remove the 2 screws fastening the eraser using a Philips #1 screwdriver. 12.
  • Page 19 13. Replace the optics bracket and install in reverse order.

  • Page 20: Replacing The Eraser

    Replacing the eraser 1. Follow step 1 through 9 of Disassembly. 2. Cut the cable tie and disconnect the eraser from the front board. 14. Remove the 2 screws fastening the eraser using a Philips #1 screwdriver. 15. Remove the eraser (1) while guiding the wires through the eraser cover (2). 3.

  • Page 21: Replacing The Right Psd Sensor

    Replacing the right PSD sensor 1. Follow step 1 through 9 of Disassembly. 2. Disconnect the PSD sensor from the front board. 3. Remove the 2 screws fastening the right PSD using a 2.5 mm hex key. 4. Replace the PSD sensor and install in reverse order.

  • Page 22: Replacing The Pmt Assembly

    Replacing the PMT assembly 1. Follow step 1 through 9 of Disassembly. 2. Put the scanner onto its side and remove the 6 screws using a 2.5mm hex key and remove the bottom cover. 3. Disconnect the BNC (1) and HV (2) connectors from the back of the main board. 4.
  • Page 23 5. Remove the 4 screws on the bottom of the unit using a 3 mm hex key. 6. Replace the PMT assembly and install in reverse order reusing the metal bracket. 7. Continue onto PMT gain and ADC offset verification/adjustment.

  • Page 24: Replacing The Power Board

    Replacing the power board 1. Follow step 1 through 9 of Disassembly. 2. Disconnect the step motor (1) and mains power switch (2) from the power board. 3. Remove the tape from the power board. 4. Remove the 4 screws fastening the power board using 2.5 mm hex key. 5.

  • Page 25: Replacing The Main Board

    Replacing the main board 1. Follow step 1 through 9 of Disassembly. 2. Disconnect the step motor (1) and mains power switch (2) from the power board. 3. Remove the tape from the power board. 4. Remove the 4 screws fastening the power board using 2.5 mm hex key.
  • Page 26 5. Remove the power board by pulling it out of the connector on the main board. 6. Rotate the unit to gain access to the other side and disconnect the BNC (1) and HV (2) connectors from the back of the main board. 7.
  • Page 27 9. Remove the 4 stanchions fastening the main board using a 5 mm nut driver. 10. Remove the main board from the electronics bracket. 11. Release the SD card by pressing on it (1) until you hear a soft click, then pulling it out of the card holder (2).

  • Page 28: Replacing The Bldc Driver Board

    Replacing the BLDC driver board 1. Follow step 1 through 9 of Disassembly. 2. Disconnect from the BLDC driver board. 3. Remove the 4 screws using a 2.5 mm hex key. 4. Replace the BLDC driver board and ensure the DIP switches are set to 0011 (off-off-on-on) and install in reverse order.

  • Page 29: Replacing The Mains Power Switch

    Replacing the mains power switch 1. Follow step 1 through 9 of Disassembly. 2. Remove the wires from the mains power switch by pulling the connectors off. 3. Press the 2 locks inwards and remove the mains power switch out of the rear of the electronics bracket.
  • Page 30 4. Replace the mains power switch and install in reverse order ensuring the orientation of the mains power switch is as shown.

  • Page 31: Replacing The Sd Memory Card

    Replacing the SD memory card 1. Follow step 1 through 3 of Disassembly. 2. Release the SD card by pressing it until you hear a soft click. 3. Replace the SD card and install in reverse order ensuring the orientation of the SD is as shown. 4.

  • Page 32: Replacing The Rfid Board

    Replacing the RFID board Illustrations are shown for the torsion spring tray assembly; however, the procedure is the same for a piano wire tray assembly. 1. Follow step 1 through 9 of Disassembly. 2. Move the tray assembly to the front of the unit by bushing on the back of the tray assembly until the IP tray is released.
  • Page 33 4. Remove the 2 screws fastening the tray using a 2.5 mm hex key and carefully lift the tray out. Note that the flexible FFC cable is fastened with an adhesive and may be disconnected if the tray is on pulled too hard 5.
  • Page 34 8. Unlock (1) and disconnect (2) the flexible FFC cable. 9. Replace the RFID board and install in reverse order taking care that the 2 screws fastening the tray are not tightened too much as this would restrict the movement of the tray assembly.

  • Page 35: Replacing The Tray Assembly

    Replacing the tray assembly Illustrations are shown for the torsion spring tray assembly; however, the procedure is the same for a piano wire tray assembly. 1. Follow step 1 through 9 of Disassembly. 2. Unlock (1) and disconnect (2) the flexible FFC cable from the bottom board using a pair of tweezers as the connector is positioned behind the bracket.
  • Page 36 4. Remove the screw fastening the ejector guide using a 2.5 mm hex key, then remove the guide. 5. Remove the 4 screws on the bearing for the drive belt using a 2.5 mm hex key and remove the bearing. 6.

  • Page 37: Replacing The Bottom Board

    Replacing the bottom board 1. Follow step 1 through 9 of Disassembly. 2. Unlock (1) and disconnect (2) the flexible FFC cable from the bottom board using a pair of tweezers as the connector is positioned behind the bracket. 8. Disconnect from the bottom board.
  • Page 38 4. Remove the screw fastening the bottom board frame using a 2.5 mm hex key. 5. Lift the frame up and to the side to allow the bottom board to come out. 6. Slide the bottom board out.
  • Page 39 7. Replace the bottom board and install in reverse order.

  • Page 40: Replacing The Stage Base Assembly

    Replacing the stage base assembly 1. Follow step 1 through 9 of Disassembly. 2. Disconnect the stepper motor from the power board. 9. Disconnect from the bottom board. 4. Remove the 6 screws using a 2.5mm hex key and remove the bottom cover.
  • Page 41 3. Remove the 12 screws on the bottom using a 3 mm hex key. 4. Carefully remove the stage base assembly from the remaining assemblies. 5. Remove the 4 screws from the stepper motor mounting bracket using a 2.5 mm hex key.
  • Page 42 6. Loosen the pivot screws from the stepper motor shaft using a 1.5 mm hex key. You may have to rotate the step motor to gain access to the screws. 7. Lift the stepper motor up and out of the socket. 8.
  • Page 43 9. Remove the 3 screws using a 2.5 mm hex key and remove the motor base. 10. Remove the drive belt. 11. Rotate the unit to gain access to the opposite side and unlock (1) and disconnect (2) the ribbon cable from the bottom board. 12.
  • Page 44 13. Remove the screw fastening the bottom board frame using a 2.5 mm hex key. 14. Remove the screw from the ejector guide using a 2.5 mm hex key, then remove the ejector guide. 15. Remove the 4 screws from the drive belt bearing using a 2.5 mm hex key and remove the drive belt bearing.
  • Page 45 16. Lift the frame up and to the side to allow the tray assembly to slide off the rail. 17. Replace the stage base assembly and install in reverse order.

  • Page 46: Replacing The Drive Belt

    Replacing the drive belt 1. Follow step 1 through 9 of Disassembly. 2. Remove the 4 screws from the stepper motor mount using a 2.5 mm hex key. 3. Loosen the 2 socket screws from the step motor drive shaft using a 1.5 mm hex key, you may have to rotate the step motor to gain access to the screws.
  • Page 47 5. Remove the 2 screws fastening the clamp using a 1.5 mm hex key. Then remove the clamp. 6. Remove the 3 screws from the motor base using a 2.5 mm hex key. 7. Remove and replace the drive belt, install the new drive belt in reverse order.

  • Page 48: Replacing The Stepper Motor

    Replacing the stepper motor This guide shows the replacement of the SAEHAN stepper motor, if the unit has a ws10 mm stepper motor, please follow the steps in the upgrade manual for stepper motor and power board. 1. Follow step 1 through 9 of Disassembly. 2.
  • Page 49 4. Loosen the 2 socket screws from the step motor drive shaft using a 1.5 mm hex key, you may have to rotate the step motor to gain access to the screws. 5. Lift the stepper motor up. 6. Remove the 4 screws fastening the motor mount to the stepper motor and reuse the motor mount during installation.

  • Page 50: Updating The Firmware After Parts Replacement

    Updating the firmware after parts replacement After parts have been replaced the firmware should be updated to match the version of parts in the unit. Only one application may communicate with the unit at a time, so in order for the updater to find the unit, please close all other related applications and ensure the ACQ manager is not running in the background by opening the task manager.

  • Page 51: Description Of Parts Information

    Once the parts used in the unit has been selected, press the update button to load the information into the unit. The updater requires 5 passes to complete the upload and will then prompt you to switch the unit off and on again to allow the unit to boot with the new firmware and parts information.

  • Page 52: Adc Offset Verification And Adjustment

    PMT gain and ADC offset verification/adjustment Whenever parts that have influence on the gain and offset are replaced it is important to verify, and if necessary adjust the PMT gain and ADC offset to ensure that the image quality is not lowered. To properly verify the PMT gain and ADC offset you will need the following items;...
  • Page 53  If the readout value is within the tolerance for the blank scan calibration, continue to PMT gain verification and adjustment.  If the readout value is outside the tolerance for the blank calibration scan, open the scanner control panel and check the box next to the “Edit Params” label. Edit parameters checkbox ...
  • Page 54 Save Params 9. Repeat the procedure until the readout value is within the blank scan calibration tolerance, then continue onto PMT gain verification and adjustment.

  • Page 55: Pmt Gain Verification And Adjustment

    PMT gain verification and adjustment 1. Expose the IP with 1100µGy, position it on the tray and close it to scan on the low scan position. 2. Compare the readout value to the tolerance for the high dose calibration. Low dose scan readout value.
  • Page 56  Adjust the value next to the label “PMT gain”. Increasing the value will increase the gain resulting in a higher readout value on the next scan. Decreasing the value will lower the gain resulting in a lower readout value on the next scan. PMT Gain ...

  • Page 57: Scanner Calibration

    Scanner calibration To calibrate the FireCR Dental you will need an IP size 4C, a generator and preferably a dosimeter. Before calibrating ensure that the unit is scanning with HD resolution by looking in the top of the LCD display on the unit. If the unit is scanning with SD resolution, enter the settings menu by pressing on the cog wheel on the LCD display of the unit.
  • Page 58 Select High Resolution (1) and then use the back button (2) on the LCD display to go back one step. Press the back button again to exit the settings menu. 1. Enter the calibration menu as described in the user manual for your software. For Quantor users use the options icon (1) in the top right hand corner and select “Device calibration”...
  • Page 59 2. Follow the on screen guide to calibrate the unit using the following dose for each step;  Blank = 0µGy  Low dose = 70µGy  Mid dose = 325µGy  High dose = 1100µGy 3. Select Calibration to complete the calibration.
  • Page 60 4. When the calibration is done a pop up window will confirm that it was successful. Select OK to continue. 5. Upload the new calibration data to the unit by selecting OK. 6. Select Yes to use the new calibration. 7.
  • Page 61 LCD calibration 1. Go to the settings menu using the cog wheel on the LCD display of the unit. 2. Enter the network setting menu. 3. Select the IP address field.
  • Page 62 4. Delete the existing IP address using the backspace button (1) on the display of the unit and enter 5 dots (2). The IP address will be restored automatically when the calibration is finished. 5. Select the check mark on the display of the unit to boot the unit in LCD calibration mode. 6.
  • Page 64 3D Imaging & Simulations Corp. (3DISC) Bldg. 1, 48, Yuseong-daero 1184 beon-gil, Yuseong-Gu, Daejeon, Korea Tel: +82 42 931 2100 Fax: +82 42 931 2299 E-mail: info@3DISCimaging.com 3DISC Americas, Inc. 22560 Glenn Drive, Suite 116 Sterling, VA 20164 United States...

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