C H A P T E R 5

Note - If the bracket screws (A in FIGURE 5-2) obstruct the LED module screws (B in FIGURE 5-2), the chassis will have to be removed from the rack (if it is a rackmounted array) or the case (if it is a tabletop array) to gain access to the bracket screws and remove them. Two #4-40 x 1/4-inch flathead screws are provided to replace the bracket screws, should they become damaged when removed. For details on removing the cover from a tabletop array, see Section 2.4, Adding or Removing the Tabletop Cover.

FIGURE 5-3 Removing the LED Module

Figure showing the LED module being removed.

2. Carefully detach the LED module from the ribbon cable by pulling out the tiny cable lock drawer and sliding the LED module free.

FIGURE 5-4 Disengaging the Ribbon Cable From the Cable Lock Drawer

Figure showing the ribbon cable being detached from the LED module.

Caution - Do not pull the ribbon cable too far out from the chassis. If you pull it too far, you might have difficulty sliding it back inside the box or even detach the connection at the other end. If this happens, you will have to remove the top of the chassis and reattach the cable inside.

5.1.4 Installing a New LED Module

Be sure to follow Section 1.2, Static Electricity Precautions.

1. Pull out the cable lock drawer on the new LED module.

2. Place the new LED module against the bracket and carefully slide the ribbon cable into the cable lock drawer.

3. Close the cable lock drawer to reconnect the cable to the LED module.

FIGURE 5-5 Inserting the Ribbon Cable Into the Cable Lock Drawer

Figure showing the ribbon cable being inserted into the cable lock drawer.

Note - The blue side of the ribbon cable must face towards the LED module and the ribbon contact area must be completely inserted into the LED module before the lock drawer is closed.

4. Insert the panhead screws through the LED module and attach the LED module to the chassis.

FIGURE 5-6 Installing the New LED Module

Figure showing the replacement LED module being installed.

5. If the flathead screws (A in FIGURE 5-2) were removed, reattach these screws through the chassis flange into the bracket.

Replacement screws are provided in the ship kit in case the original screws were damaged during removal.

6. If it was removed in Step 1 in Section 5.1.3, restore the chassis to its case or rack.

5.1.5 Replacing the Ear Cap and Front Bezel

1. Push the top and bottom of the ear cap onto the ear, pressing in on the top side toward the center of the array until the ear cap snaps into place.

2. Insert the bezel arms into the chassis holes.

3. Lift the bezel into position and press it onto the front of the chassis until it is flush with the front.

4. Lock the bezel in the closed position with the keys.

5. Remove the keys if they were not initially inserted into the chassis.

6. Power on both power supply modules.

5.2 Replacing the LED Module for 1U Arrays

5.2.1 Reviewing the Parts and Tools

The following parts are included in the LED module replacement kit:

one LED/reset switch board, 1U

two #4-40 x 1/4-inch flathead, magnetic SS, Phillips, 100 degree screws

The following tools are required to complete this procedure:

Phillips No. 1 screwdriver

3/16" wrench

5.2.2 Removing the Front Bezel and Right Ear Cap

1. Power off both RAID controllers.

2. If attached, unlock the front bezel cover with the provided key.

3. Grasp the front bezel cover on both sides and pull it forward and then down.

4. Press the right bezel arm (hinge) toward the left side to release it from the chassis hole.

The left bezel arm also disengages.

5. Note the location of the chassis bezel holes on each ear.

6. Remove the plastic cap from the right ear of the array.

a. Squeeze both sides of the cap at the top and the bottom.

b. Turn the cap toward the center of the array until it disengages and pull it free.

FIGURE 5-7 Removing the Right Ear Cap

5.2.3 Removing the LED Module

Be sure to follow Section 1.2, Static Electricity Precautions.

1. Remove the ball studs holding the LED module to the chassis.

FIGURE 5-8 Removing the ball studs

Figure showing how to remove the ball studs holding the LED module.

Note - Older models of the 1U array have two flathead screws driven through from the back side of the bracket. Two #4-40 x 1/4-inch flathead screws are provided to replace the screws, should they become damaged when removed. On newer models, the studs are embedded in the chassis ear and no screws are required. You will need a 3/16" wrench to remove the ball studs.

Note - If you cannot access the ball studs to remove them, the chassis will have to be removed from the rack.

2. Unfold the ribbon cable and detach it from the LED module by pulling out the tiny cable lock drawer and sliding the LED module free.

FIGURE 5-9 Removing the LED Module From the Chassis

Figure showing the LED module being removed from the chassis.

FIGURE 5-10 Detaching the Ribbon Cable From the LED Module

Figure showing how to detach the ribbon cable from the cable lock drawer.

3. Remove the two panhead screws holding the LED module to the bracket.

FIGURE 5-11 Removing the Screws Holding the LED Module

Figure showing the LED module attached to the bracket.

FIGURE 5-12 Detaching the LED Module From the Bracket

Figure showing the LED module being detached from the bracket.

5.2.4 Installing a New LED Module

1. Attach the new LED module to the bracket using the two screws from Step 3 in Section 5.2.3.

2. Pull out the cable lock drawer on the new LED module.

3. Insert the ribbon cable into the new LED module and close the cable lock drawer to reconnect the cable to the LED module.

FIGURE 5-13 Inserting the Ribbon Cable Into the Cable Lock Drawer

Figure showing how to insert the ribbon cable into the cable lock drawer.

Note - The blue side of the ribbon cable must face towards the LED module and the ribbon contact area must be completely inserted into the LED module before the lock drawer is closed.

4. Fold the ribbon to lay flat against the back of the LED module and attach the LED module to the chassis with the ball studs from Step 1 in Section 5.2.3, Removing the LED Module.

5. If the ball studs were attached to flathead screws, reattach these screws through the bracket to the ball studs.