HP 3400 - Manual (Page 10)

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power button and light
Use the Power button to turn the printer on and off.
1. Power button and light
1
power button
Press the Power button to turn the printer
on or off. It may take a few seconds for
the printer to turn on after pressing the
Power button.
Caution! Always use the Power button on
the front of the printer to turn the printer
on or off. Using a power strip, surge
protector, or a wall-mounted switch to turn
the printer on or off may cause printer
failure.
power light
When cancelling a print job from the
driver, the Power light blinks briefly.
When an error occurs, the Power light
blinks continuously.
When the printer functions normally, the
Power light is on continuously.