Self-Diagnosis; Recover Factory Settings - OHAUS ST300 Instruction Manual

STARTER 300 Portable pH Meter
5.4

Self-diagnosis

Press and hold

icon blinks one after the other.
This checks whether all icons are correctly shown. The next step is to check that the keys are
functioning correctly. This requires user interaction.
When b blinks, five icons are displayed.
Press the five keys in any order. Each time you press a key an icon disappears from the

screen, continue to press the other keys until all the icons have disappeared.
When the self-diagnosis has been completed successfully, PAS appears. If self-diagnosis fails,
error message Err 1 appears. In this case, repeat the self-diagnosis.
Note: You have to finish pressing all five keys within 2 minutes, otherwise Err 1 appears and you
will have to repeat the procedure.
5.5

Recover factory settings

When the meter is off, press and hold

screen displays "RST" and blinks, press
offset, etc.).
Press to switch off the meter.

and simultaneously until the meter displays the full screen. Each
& & together for 3 seconds, the
to reset factory settings (MTC, slope and
EN-15