LCD Monitors
Method 1
- Press and hold the "AUTO" & "+" button some model use "ENTER" and "+" button, then power on the lcd monitor.
- Then Press the "MENU" button to open the osd menu.
- In the bottom of OSD menu, you will notice an extra selection called "FACTORY".
- Select "FACTORY" and press the "ENTER" button and you're logged in to the dell factory service mode.
Method 2
- Start with the screen turned off.
- Press and hold the {MENU} & {+} buttons.
- While holding both buttons, turn the Display On.
- Once the Display is on, release all buttons.
- Now press the {-} button.
- The Service Menu will be displayed.
- Press the {MENU} button to exit.
Method 3
- Start with the screen turned off.
- Press and hold the {MENU} & {+} buttons.
- While holding both buttons, turn the Display On.
- Once the Display is on, release all buttons.
- Press the {MENU} button and select "Factory Reset".
- Then go to the option "Factory".
- The Service Menu will be displayed.
- Press the {MENU} button to exit.
Plasmas
Method 1
- Press the {INPUT} {6} {1} {9} buttons on the remote.