• Discovery MR750 3.0T System Service Methods
  • 5690009-2EN Revision 4
  • Object ID: 00000018WIA30521730GYZ
  • Topic ID: id_2012034 Version: 4.1
  • Date: Jul 13, 2021 4:16:32 PM

Removing the Integrated Control Engine (ICE) fan assembly

Removing the Integrated Control Engine (ICE) fan assembly from the System Cabinet.

Prerequisites

Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
1-5 to 10 minutes-
Tools and test equipment
ItemQuantityPart numberManufacturer
Nonmagnetic Titanium Service Tool Kit, Small Set1 Kit5113258-
Nonmagnetic Titanium Service Tool Kit, Large Set5112581-

Procedure

  1. From the Common Service Desktop, turn off the ICN(s) (see ICN On/Off Procedure).
  2. Do LOTO for reconstruction equipment. See the latest revision of the MR Service Safety Manual (5452735), available from the online documentation library.
  3. Open the PGR door.
  4. Connect the ESD strap to the side bracket.
  5. Remove the ICE as follows:
    Note: Do not remove the slide rails from the ICE chassis.
    1. Disconnect all connectors from the front panel.
    2. Remove the screws securing the ICE module in place.
    3. Carefully move the cables out of the way, and slide the ICE out.
  6. Disconnect the PCIe cable (J55) from the ICE rear panel.
    Note: The PCIe cable is connected to J51 on systems with ICE for Digitized Per Pin (DPP).
    Note: Disconnect the PCIe cable as the ICE is sliding out.
    Figure 1. Disconnecting the PCIe cable
    1ICN PCIe connection for DPP
    2ICN PCIe connection for Remote Receiver (RRx)
  7. Press the release tabs in on each side and pull the ICE forward.
    Note: Hold the ICE carefully when you remove it so that it does not fall.
  8. Remove the cables from the rear panel as follows:
    1. Release all reusable tie wraps, and remove cables. (Lift up the latch and push the tie wrap to release it.)
    2. Disconnect two Ethernet cables (J53, J54) and the power cable (J52) from the ICE rear panel.
    Figure 2. Ethernet cables (J53, J54) and power cable (J52)
  9. Do the following steps to remove a fan from the back of the ICE.
    1. Pull the fan power cable from the hole beside the fan, and disconnect the cable.
      Note: Be careful when you remove the power cable. It can fall into the hole shown below.
      Figure 3. Hole for power cable
    2. Remove four screws, and remove the fan.
    Figure 4. Removing the fan
    1Connect the fan cable to the power cable
    2Tighten four screws