50
Troubleshooting and Test
Functions
Status Indicators
The autosamplers are provided with two status indicators which indicate the
operational state (prerun, run, and error states) of the instrument. The status
indicators provide a quick visual check of the operation of the autosampler
(see “Status Indicators” on page 51).
Error Messages
In the event of an electronic, mechanical or hydraulic failure, the instrument
generates an error message in the user interface. For each message, a short
description of the failure, a list of probable causes of the problem, and a list
of suggested actions to fix the problem are provided (see “Error Messages”
on page 53).
Maintenance Functions
The maintenance functions position the needle arm, gripper assembly, and
metering device for easy access when doing maintenance (see “Maintenance
Functions” on page 80).
Tray Alignment
Tray alignment is required after repair of internal components, or after a
firmware update. The procedure aligns the gripper arm correctly to ensure
the positioning of the gripper arm is correct for all vials (see “Tray
Alignment” on page 87).
Step Commands
The step functions provide the possibility to execute each step of the
sampling sequence individually. The step functions are used primarily for
troubleshooting, and for verification of correct autosampler operation after
repair (see “Step Commands” on page 89).
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