Access the Support Menu
X451
1. Press the Back
button.
2. Press the Cancel
button.
3. Press the Back
button twice.
X551
▲
Touch the Back
button four times consecutively to open the Support Menu.
NOTE: The Support Menu is usually used by HP call center agents for assisting customers.
Place the product into MFG (manufacturing) mode
NOTE: These two modes are ONLY to be used by authorized service providers. They should
NEVER be accessed by the end user.
X451
1. Press and hold the ATM1 and ATM2 buttons while plugging in the product.
2. Press the power button to enter MFG (on) mode.
X551
1. Press and hold the power button while plugging in the product. The HP logo appears on the
product control panel, and then disappears. Continue to hold the power button for five seconds
after the logo disappears.
2. Release the power button.
3. Touch the Home
button.
4. Touch the Back
button.
5. Touch the Home
button twice.
6. After a new screen appears, touch the Home
button again to enter MFG (off) mode.
7. Press the power button to enter MFG (on) mode.
Place the product into Audit mode
NOTE: These two modes are ONLY to be used by authorized service providers. They should
NEVER be accessed by the end user.
X451
▲
Press and hold the ATM1 and ATM3 buttons while plugging in the product.
ENWW
Removal and replacement procedures
15
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