Acer NA23WABAS Service Manual page 53

52
ACER V233H
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S8 Press Auto to update F/W, the monitor will auto reset
system after F/W completely load.
S9 Check firmware version
Turn off the power,then press force on " POWER " and " E
" button at the same time then press on " MENU "button to
enter factory mode
Note: Please pay attention ,Don't change any parameter
which is measured by precise machine before shipping
out.
6. Firmware Upgrade Process (continued)