Compaq T2200 XR Operation And Reference Manual page 40

3-8 Compaq UPS T2200 XR Operation and Reference Guide
Press and hold the ON button (2) until the Utility LED (1) turns solid green,
indicating that power is available at the UPS output receptacles. The UPS
acknowledges compliance with a short beep.
IMPORTANT: If using battery power (no utility power present), press and hold the ON
button (2) until the audio alarm sounds.
2
Figure 3-2. Placing the UPS in Operate mode
1
Utility LED
2
ON button
1