Orion Benchtop pH/ISE Meter Instruction Manual
Troubleshooting
68
Test Function/Display Sequence
TEST #7 Keypad Test Checks that the keypad is
functioning properly. During
this test, each key must be
pressed, one at a time, at the 0
prompt for Orion 410Aplus,
420Aplus and 710Aplus, and PRESS
ALL KEYS for Orion 520Aplus,
525Aplus, 720Aplus and 920Aplus.
If no keys are pressed, or
there is a problem with a key,
the meter will recognize an
error and display E-7 for
Orion 420Aplus and 710Aplus,
and ERROR 7 for Orion
520Aplus, 525Aplus, 720Aplus, and
920Aplus. Press yes to continue.
TEST #8 Autoshutoff Test Checks the meter autoshutoff
feature. The display clears
then the meter shuts off.
After a brief interval the
meter will turn on again and
resume normal operation.
NOTE: If any operator assistance codes appear
make a note of each, then press yes to continue.
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