ACU-RITE DRO 100 - Manual (Page 21)

Troubleshooting DRO 100
16
Working memory—the memory used by the readout for calculations is faulty.
While it may be possible to use the readout, it’s position display and other
information will not be reliable.
MEMORY FAILURE [2] – PRESS CLEAR
Program memory—the memory used to store the software is faulty. While it
may be possible to operate the readout, some functions will not work properly and
incorrect information may be displayed.
MEMORY FAILURE [3] – PRESS CLEAR
Internal Testing
Several internal tests may be performed to ensure that the readout is functioning
properly. Tests are available for the internal memory, the keypad, and the
display. In addition, the testing procedure reports the software version of the
readout.
Begin the internal testing by holding down the RAD
DIA
key for about 2 seconds.
The software version will appear in the display
Keypad test Begin by pressing the (upper) ZERO key, then press each key (except
the ZERO key) in turn to verify that it is functioning properly. When a key is
pressed, the display activates a “plus sign” indicator and increments a count.
When you release the key, the plus sign disappears.
!
CAUTION
The readout cannot be relied on for correct operation if any
memory failure is indicated. The readout should be serviced
immediately.
!
CAUTION
The readout cannot be relied on for correct operation if any
memory failure is indicated. The readout should be serviced
immediately.