• Topic ID: id_15460681
  • Version: 3.0
  • Date: Jun 15, 2020 11:01:04 PM

DIG GPU Replacement

Prerequisites

Overview

This procedure describes and illustrates the steps necessary to replace the Data Acquisition & Image Generation (DIG) Computer GPU Card.

Figure 1. DIG GPU Card

1 Power-Off (Shut Down) the Console

Procedure

  1. Select one of the following methods to power off the Operator Console:

    • If applications are running, click the Shut Down icon and select Shut Down.

    • If applications are down, open a Unix Shell using the Toolchest. Type: {ctuser@hostname} halt. Press Enter.

    The Operator Console monitor will display a ‘System Halted’ message when it is acceptable to power off the Operator Console.

  2. Power OFF the Operator Console at the front panel switch. (See Figure 2.)

    Figure 2. Console Power Switch

  3. Perform prescribed Lockout/Tagout procedure. For added protection, disconnect the Twist-N-Lock Main Power Cable from rear of console.

2 Remove DIG Computer

Procedure

  1. Remove the front and rear Operator Console Covers per prescribed cover removal procedure.
  2. Remove the cable connections at the rear of the DIG Computer chassis.
    note:

    Verify that all cables are labeled and clearly marked. If necessary, add a label for clarity.

  3. Remove the power cord at the rear of the DIG Computer chassis.
  4. Remove the four (4) 5mm socket cap screws and washers from the front of the DIG Computer chassis, holding the chassis to the Operator Console rack.

    Figure 3. DIG Computer Mounting

  5. Slide the DIG Computer chassis forward (out the front of console) and set aside. For lifting details, refer to the Equipment Service - Console procedure located in the Safety folder of this service methods publication.

3 Remove GPU Card from DIG Computer

Procedure

  1. At the rear of the DIG Computer Chassis, release the Chassis Cover Lock using a Phillips screwdriver. Back out lock screw at least two (2) full turns.

    Figure 4. DIG Computer Chassis Cover Lock

  2. Slide the Chassis Cover towards the front of the chassis and remove.
    note:

    You may need to tap on back upper edge of cover to release cover before sliding forward.

    Figure 5. DIG Computer Cover Removal

  3. Remove the Expansion Card Hold-down Clamp from DIG Computer Chassis.

    Figure 6. DIG Computer Expansion Card Hold-down Clamp Removal

  4. Disconnect the two (2) Power Supply Connectors at the rear of the GPU Card.
  5. Remove the two (2) Phillips Screws holding the GPU Card in the DIG Computer chassis and carefully remove the card from the Systemboard.

    Figure 7. DIG Computer GPU Card Location

4 Install Replacement GPU Card in DIG Computer

Procedure

  1. Carefully install the replacement GPU Card in the same location (slot) in the DIG Computer. Make sure all cables are clear of the GPU Card and the card seats firmly in the Systemboard.

    Figure 8. DIG Computer GPU Card Slot Location

  2. Reinstall the two (2) Phillips Screws to secure the GPU Card to the chassis.
  3. Reconnect the two (2) Power Supply Connectors to the rear of the GPU Card.
  4. Reinstall the Expansion Card Hold-down Clamp in the DIG Computer Chassis.

    Figure 9. DIG Computer Expansion Card Hold-down Clamp Placement

    note:

    The Expansion Card Hold-down Clamp must be installed as illustrated above. The Clamp should be centered over the Cooling Fan with slotted end over expansion cards.

  5. Reinstall the DIG Computer Chassis Cover and lock the cover in place.

5 Re-Install DIG Computer

IMPORTANT: IN ORDER TO MEET EMC REQUIREMENTS, THE CHASSIS COVERS MUST BE PROPERLY INSTALLED AFTER SERVICING. CHECK THAT THE COVERS ARE MOUNTED FIRMLY IN PLACE AND LOCKED DOWN WHERE APPLICABLE.

Procedure

  1. Slide the replacement DIG Computer into the Operator Console from the front.
  2. Replace the four (4) 5mm socket cap screws and washers to secure the DIG Computer chassis to the Operator Console rack. Torque to 4.6 N-m.
  3. Mount the power cord to the rear of the DIG Computer chassis and verify that its power supply switch is turned to the ON position.
  4. Replace the rear cable connection(s).

    Figure 10. HDIG Cable Connections and Destination

    Figure 11. VDIG Cable Connections and Destination

    For cabling details, refer to the appropriate interconnect located in the System Diagrams folder of this service methods publication.

6 Power-On the Operator Console

Procedure

  1. Reconnect the Twist-N-Lock Main Power Cable from rear of console and remove Lockout Tagout protection applied earlier.
  2. Power ON the Operator Console at the console’s front panel switch.
  3. Visually verify the DIG Computer front panel Power LED is illuminated. If not, press the DIG front panel power switch to apply power to the DIG Computer.

    Figure 12. DIG Front Panel Indicators and Switches

7 Verify Replacement DIG Computer GPU Card Operation

Procedure

  1. Verify that the DIG Computer has powered up.
  2. Verify that the DIG Computer is not displaying or sounding any POST Errors.
    note:

    See DIG Troubleshooting if any errors appear.

8 Finalization

Procedure

  1. Refer to System Scanning Test to confirm proper operation.
  2. Reinstall Console Front and Rear Covers.