HP C2246 Technical Reference Manual page 28

Front Panel LED Indicator
The light emitting diode (LED) on the front of the disk drive is an activity light that indicates
the operational status of the drive from power-on, through the self-test diagnostics, and into
normal operation.
1. On
'2.
Flashing
3. Intermitte.nt
At Power-On, the LED turns on until the Power-On sequence js complete and then
turns off.
IT the Auto-SpinUp option jwnper is installed, the Power-On sequence includes
execution of the SpinUp sequence, calibrating the head positioning electronics,
and testing the read/write system.
If the Auto-SpinUp option is not installed, the Power-On sequence includes
execution of the SpinUp sequence only.
A flashing LED (approximately 1 Hz) indicates that the controller has failed all or a
portion of the internal diagnostic tests.
After the power-on diagnostics have completed, the LED functions
as
an activity
light and will go on any time the disk drive is executing a command, reading, or
writing.
IT
the LED is off, the drive is idle.
Address and Configuration Pin-Set Set-ups
The location and set-up of the address and configuration pin-sets depends upon the drive
interface option and its associated PCA. The information for each interface option is
contained in its own appendix to this manual. Save any removed shorting jumpers for future
use.
• Table 2-1 lists the currently supported interface options, their associated
electronics/controller PCAs, and the appendices that provide configuration details for each
PCA.
• Table 2-2 lists the currently supported configuration options and provides a brief
explanation of each.
Table 2-1. Address/Configuration Pin-Set Information Locations
Interface Option Interface PCA Appendix
001
SCSl-2, Fast, Narrow, Single-Ended AppendixE
002 SCSI-2
1
Fa.st, Narrow, Differential
Appendix F
012 SCSI-2
1
Fa.st, Wide, Differential Appendix G
2-6 Product Installation
/
~'
. I
!'\'
i
' r
\
.
._/