Hitachi Accuvue HM-4721-D User Manual page 19

New adjustment data can be stored in the memory of the monitor by
pressing the STORE button. If, however, improper data is accidentally
stored there, the previously stored data will be lost.
This is because only one set of data can be stored with one timing signal.
To prevent such an accident, you can lock new adjustment data after
storing it.
After storing the adjustment data, you can lock it by holding down the
SELECT button and pressing the STORE button.
You can unlock the locked data by holding down the SELECT button
and pressing the RECALL button. Adjustment mode is automatically
set when the data is unlocked. To go back to the normal operation
mode, press the STORE button.
CAUTION
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