Section 6 - Fault Isolation
6-45
Unable to position device within specified tolerance [E_TOLERANCE_I]
Comment: For the stepping motors, the aperture shuttle or the TZ drive, indicates that
the requested position could not be obtained within the specified device
tolerance.
Action: For the TZ drive (table pedestals), check the firmware version. If it is not
2.30 or higher, replace the TZ EPROM with the latest version. If the
problem persists (or if the firmware version was already 2.30 or higher), it
may be caused by a thermal overload in the DC motors. Our experience has
been that they cannot run at much more than a 5% duty cycle. You can
check whether it is a firmware or hardware problem by engaging the
emergency stop button on the operator's panel. Then use the table up switch
to move the table. If it does not move, wait at least twenty (20) minutes and
try again. If it moves after 20 minutes, it was a thermal overload. If it does
not move, call Hologic Field Service.
Action: For one of the stepping motors (AR, AY, TX or TY), either the motor has
not been properly calibrated, the motor is binding, or the drive belt is too
loose.
Action: For the aperture shuttle (LOCUS CARM), either the apertures have not been
calibrated or the mechanism is binding. Visually inspect the aperture shuttle
and use the MOVE_REL command to verity that the shuttle is moving
without binding. If it does not move or binds, fix the electrical or
mechanical problem with the shuttle. If it does move, recalibrate the shuttle.
Unable to open a window
Software Error: Ensure that
only
Hologic software is installed on the computer. If so, this
message should be reported to Hologic Technical Support. Include as much
information as possible about what you were doing at the time.
Unable to restore scan. If the System Disk is full Delete Archived
scans and try again.
User or
Software Error: The system was unable to restore one or more scans.
Action: This usually means that the hard drive is full. Check the "Room for ..."
message in the status window. If the disk is
not
full, then this indicates a
hard drive problem.
Unexpected message from remote device [E_UNEXPECTED_RESPONSE_I]
Comment: The first character in a fast query response was not the fast query command
("?").
Action: Follow the procedure under "BAD CHECKSUM IN MESSAGE." for
isolating communications bus I/O errors.
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