HP Designjet T Series — Service Manual 1-3
Using the Front Panel
Using the Front Panel
Below is a diagram of the front panel. 
Key Function
 Arrow Keys 
Use the Arrow keys to scroll through a menu or toggle between YES or 
NO when prompted.
 Cancel 
Use the Cancel key to abort or stop a procedure or reject test results.
 OK 
Use the OK key to select a menu option.
 Power 
Use the Power key to turn the printer ON and OFF.
 Menu 
Use the Menu key to enter the main menu.
 Back 
Use the Back key to go back to the previous menu or reject test results.
Service Key Combinations
 Diagnostic mode 
With the printer OFF, press and hold the UP and OK keys. While holding 
the Up and OK keys down, press and hold the Power key to turn on the 
printer. Hold all three keys until the Power key stops flashing, usually 
about 5 seconds.
 Service Menu (Service Engineers Only) 
From the main menu, press and hold the Up and Cancel keys.
 Service Menu (For users) 
From the main menu, press and hold the Down and Cancel keys.
Up and Down
Cancel
OK
Power
Menu
Back
Form Feed and Cut
Unload Paper
View Loaded Paper
View Ink Levels