Technical data

2–21
Compaq HSZ80 Array Controller ACS Version 8.3 Maintenance and Service Guide
16. Grasp the DIMM and gently remove it from the DIMM slot. Repeat for all
DIMMs.
Installing a Controller and its Cache Module in a Dual-
Redundant Controller Configuration
Use the following steps to install a controller and its cache module.
CAUTION: ESD can easily damage a controller, cache module, or DIMM.
Wear a snug-fitting, grounded ESD wrist strap.
1. Insert the DIMM straight into the socket in the replacement cache module 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. Repeat for all DIMMs.
4. Connect a PC or terminal to the operational controller. The controller to which
you’re connected is “this controller”; the controller whose cache module you’re
installing is the “other controller.”
5. Start FRUTIL with the following command:
RUN FRUTIL
FRUTIL displays the following:
Do you intend to replace this controller’s cache battery? Y/N
6. Enter N(o). FRUTIL displays the FRUTIL Main menu:
FRUTIL Main Menu:
1. Replace or remove a controller or cache module
2. Install a controller or cache module
3. Replace a PVA module
4. Replace an I/O module
5. Exit
Enter choice: 1, 2, 3, 4, or 5 ->