Troubleshooting, - Beckman Coulter LH 780 Instructions Manual

5.1 OVERVIEW
Data Review
A review of instrument data, such as background, control and blood sample results, is helpful
in detecting problems. Sometimes a questionable blood sample result is the only symptom of
subtle reagent or pneumatic problems. In that case, you can use the questionable parameter
result as a clue to the location of the malfunction.
Specimen-Related Problems
An instrument problem is differentiated from a specimen-related problem by running a
control. If the control results are acceptable, the problem is probably specimen-related.
Instrument Problems
If the control results show similar problems, it indicates an instrument problem. The next
step is to determine the subsystem (electronic, pneumatic/hydraulic, or reagent) causing the
problem. Because it is easiest to detect a problem in the electronic subsystem and hardest to
detect a problem in the reagent subsystem, the subsystems are usually checked in the
following order: electronic, pneumatic/hydraulic, reagent.
Workstation Troubleshooting
If the Workstation encounters a problem, it tries to display a message. The message describes
the problem and provides information about how to avoid or fix the problem. For best results,
follow the instructions with the messages.
Some messages appear from the Windows
packages that are included on your Workstation. Because these messages may not be logged
by the Workstation and may not have online help available for them, it is important that you
write these down and call your Beckman Coulter Representative.
If your Workstation is connected to a network, some messages may be caused by your
network configuration. If you have a local network administrator or a Windows 2000
Administrator, contact your administrator prior to calling your Beckman Coulter
Representative. Your administrator may be able to resolve the problem.
Note: During the course of testing the Workstation, specific intermittent problems have been
reported and corrective actions have been determined. You may want to review the Problem
List periodically to help avoid these problems.
Electronic Troubleshooting
Detecting a problem in the electronic subsystem--or eliminating the electronic subsystem as
the source of the problem--is simplified by indicators and electronic tests.
Indicators
An indicator may inform you that a problem exists; it may also pinpoint the source of a
problem. For example, the pneumatic light on the power supply appears red when a problem
exists.
PN 773023AC
5
TROUBLESHOOTING
®
2000 operating system and other software
5
5-1