HP LaserJet 9000 Printer series - Manual (Page 28)

2 The control panel 28
Interpreting control panel lights
Interpreting control panel lights
The control panel contains three indicator lights:
z Ready
z Data
z Attention
Light Indication
Ready
Off The product is offline or has an error.
On The product is ready to print.
Blinking The product is going offline. Please wait.
Data
Off The product has no data to print.
On The product has data to print, but is not ready or
is offline.
Blinking The product is processing or printing the data.
Attention
Off The product has no error.
On The product has a critical error. Turn the product
off and then on.
Blinking Action is required. See the control panel display.