Operation 
2-4  HP Uninterruptible Power System T1000 XR and T1500 XR Models User Guide 
 
 
HP CONFIDENTIAL Codename: Sherman Part Number: 216164-002 Last Saved On: 8/27/02 3:59 PM 
 
Returning to Standby Mode 
When the UPS is in Operate mode (the Utility LED is solid green), press and hold the 
Standby button (2) until the audible alarm sounds. The Utility LED (1) flashes, and power to 
the loads ceases.  
1
2
 
Figure 2-3:  Placing the UPS in Standby mode 
 
IMPORTANT: 
•  While in Standby mode, the UPS maintains the charge on the batteries, but no power is available 
at the output receptacles. 
•  The UPS remains in Standby mode until an alternate mode is selected, or until utility power is 
removed.