Technical data

2–53
Compaq HSZ80 Array Controller ACS Version 8.3 Maintenance and Service Guide
CAUTION: ESD can easily damage a cache module or a DIMM. Wear a
snug-fitting, grounded ESD wrist strap.
Removing DIMMs
Use the following steps to remove a DIMM from a cache module:
1. Remove the cache module using the steps in either “Removing the Cache Module
in a Single-Controller Configuration,” page 2–13, or “Removing a Cache Module
in a Dual-Redundant Controller Configuration,” page 2–31.
2. Press down on the DIMM retaining levers at either end of the DIMM you want to
remove.
3. Grasp the DIMM and gently remove it from the DIMM slot.
Installing DIMMs
Use the following steps to install a DIMM in a cache module:
1. Insert the DIMM straight into the socket and ensure that the notches in the
DIMM align with the tabs in the socket (see Figure 2–9).
2. Press the DIMM gently until it’s seated in the socket.
3. Double-check to ensure both ends of the DIMM are firmly seated in the slot and
both retaining clips engage the DIMM.
4. Install the cache module using the steps in either “Installing the Cache Module in
a Single-Controller Configuration,” page 2–14, or “Installing a Cache Module in
a Dual-Redundant Controller Configuration,” page 2–34.