Technical data

4–1
Compaq HSZ80 Array Controller ACS Version 8.3 Maintenance and Service Guide
Chapter 4
Troubleshooting
This chapter provides guidelines for troubleshooting the controller, cache module,
and external cache battery (ECB). It also describes the utilities and exercisers that you
can use to aid in troubleshooting these components. See Chapter 5, “Event Reporting:
Templates and Codes,” for a list of the event codes. See the documentation that
accompanied the enclosure for information on troubleshooting its hardware, such as
the power supplies, cooling fans, and environmental monitoring unit (EMU).