Compaq 3000 manual Replacing the Controller Memory Cache Modules

Chapter 3. Installation and Maintenance

If you cannot access the blowers from the rear of the cabinet, proceed as follows:

1.Disconnect the cables from the front of the controller shelf and remove the shelf from the cabinet.

2.Use a Phillips-head screwdriver to remove the safety screw in the upper right corner or lower left corner of the blower.

3.Press the upper and lower blower mounting tabs together to release the blower.

4.Pull the blower straight out to disconnect it from the shelf power connector.

5.Align the replacement blower connector and push the blower straight in, making sure that both mounting tabs lock in place.

6.Insert the Phillips safety screw.

7.Reinstall the shelf and reconnect the cables.

8.Verify that the shelf and all SBBs are operating properly by observing the LEDs.

NOTE

If the blower status LEDs on the Device I/O as- sembly are not off and all shelf power supplies are operating, the second blower could have failed or the wrong blower was replaced.

3.6.6 Replacing the Controller Memory Cache Modules

The memory cache modules in the RAID controller (see Figure 3–19) are re- placed by removing the controller from the shelf to gain access to the modules. Then, place the controller on a flat working surface and proceed as follows:

CAUTION

To prevent an electrical discharge from damaging the SIMMs, always wear an ESD wrist strap con- nected to a suitable ground when handling the memory chips.

EK–SMCPQ–UG. C01 3–35