40
Instructions for Use V1.2, RevE – 08/2016
7. Troubleshooting
7.1 General
In the following table there is a list of the most common problems which can arise
while working with the instrument, along with possible causes and troubleshooting
procedures.
If faults occur that cannot be corrected with the recommended procedures, or if they
occur again, Leica Service Support must be informed immediately.
The Leica ST4020 is equipped with a simple fault detection system, and can identify certain
movement errors automatically.
• If an operation error is detected, the transfer mechanism will first stop moving.
• It will then back up a short distance, stop again, and then move forward in a second attempt
to reach the desired position.
• If this error recovery attempt is successful, processing continues normally.
• However, if the second attempt to reach the position for advanc
-
ing the slide carriers is also unsuccessful, the system emits a
continuous audible alarm.
• The message shown here also appears in the display.
7.2 Alarms
• As soon as the
PAUSE/STOP
key is pressed, the system returns
to the start position, reinitializes, and switches to idle mode.
• In this event, any staining run currently in progress is terminated
and must be restarted.
