InFocus X9 - Manual (Page 14)

... English
Operation
Powering Off the Projector
1. Press the “Power/Standby” to turn off the projector lamp,
you will see a message as below on the on-screen display.
2. Press the “Power/Standby” again to confirm.
3. The cooling fan continues to operate for abo ut 120 seconds
for cooling cycle and the Power LED will flash blue. When
the light starts flashing, the projector has entered standby
mode.
If you wish to turn the projector back on, you must wait
until the projector has completed the cooling cycle and has
entered standby mode. Once in standby mode, simply press
“Power/Standby” to restart the projector.
4. Disconnect the power cord from the electrical outlet and the
projector.
5. Do not turn on the projector immediately following a power
off procedure.