Troubleshooting - Olympus EPOCH 650 User Manual

12.4 Protecting the Display
EPOCH 650 ultrasonic flaw detector includes a clear-plastic sheet protecting the
display window. Leave the clear-plastic sheet in place when using the instrument to
continuously protect the display. Clear-plastic sheet replacements are available from
Olympus in packages of 10 (P/N: 600-DP [U8780297]).
The display window is permanently bonded to the upper-half of the instrument case
to fully seal the instrument. If the display window is damaged, the entire upper-half
of the instrument case and the direct-access keypad must be replaced.
12.5 Annual Calibration
Olympus recommends that you send your EPOCH 650 once a year to an Olympus
service center for annual calibration. Contact Olympus for details.

12.6 Troubleshooting

Symptom
The front panel keys appear to be frozen. The On/Off power key is the only
operational front panel key.
Possible cause
The All Lock function is active, locking all front panel keys.
Solution
Turn the instrument power Off and On to unlock the keys.
DMTA-10055-01EN, Rev. A, February 2015
Maintenance and Troubleshooting 299