Menu access
These hidden engineering menus are used for testing and calibration. Some or all of them are
referenced in remove and replace sections as required.
WARNING! Misuse of these menus could damage the product or make it unusable.
NOTE: These buttons are not illuminated until they are touched with sufficient pressure. Locate
these buttons by sweeping your finger over the general areas indicated in
Figure 1-18 X451 control
panel button locations on page 14.
Figure 1-18 X451 control panel button locations
ATM 1
ATM 2
ATM 3
HOME (TL)
PREVIOUS (BL)
CANCEL
Figure 1-19 X551 control panel button locations
Access the Engineering menu
X451
1. Press the Cancel
button.
2. Press the Back
button.
3. Press the Cancel
button twice.
X551
1. Touch the Home
button.
2. Touch the Back
button.
3. Touch the Home
button twice to enter the Engineering menu.
NOTE: The Service menu is accessed from the Engineering menu.
14 Chapter 1 Removal and replacement ENWW
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