XP128 Hardware 35
11 PWR SW ENABLE Switch Used to enable the PWR on/off switch. To enable the
PWR on/off switch, turn the PWR SW ENABLE
switch to the ENABLE position. If the automatic
power on restart feature is not being used, this switch
should be in the DISABLE (opposite of ENABLE)
position during normal operation.
12 PWR ON/PWR OFF Switch To switch on/off the subsystem, use this switch while
turning the PWR SW ENABLE switch is in the
ENABLE position. This switch only performs this
function when the REMOTE/LOCAL switch is set to
the LOCAL position.This switch should be in the
PWR ON position during normal operation. The
position of this switch should only be changed when
directed by HP service personnel.
13 EMERGENCY POWER
OFF
Switch Used to power off the storage subsystem in an
emergency situation.
14 PWR ON/PWR OFF
REMOTE/LOCAL
Switch Determines how the disk array is powered on or off.
REMOTE: Disk array power on/off is controlled by
the power control interface to the CPU (mainframe
only).
LOCAL: Disk array power on/off is controlled by the
PWR ON/PWR OFF switch,
15 LED TEST/CHK
RESET
Switch LED TEST position: The LEDs on the panel go on.
CHK RESET position: The PS ALARM and TH
ALARMS are reset.
Table 2. Control or indicator function on control panel (Continued)
Item Label Indicator Description
