Possible cause and actionProblem
•
Cables incorrectly connected
Make sure that the cables are connected correctly,
earth to earth etc.
To isolate the problem:
External digital equip-
ment does not respond
to set changes in Digi-
tal Out
1
Connect Digital Out (e.g. pin 6) to Digital In (pin 1,2,3,
or 4).
2
Change the Digital Out 1 signal between ”1” and ”0”.
Verify that Digital out follows.
3
If not: contact Service.
If it does: the problem probably lies within the connect-
ed equipment.
•
Auto-zero on the wrong level
Reset Auto-zero.
•
Digital Out connection error
Make sure that Digital Out is connected correctly, earth
to earth etc.
Analog In does not
measure expected
voltage
•
Too long cable between the external equipment and
E9
Use as short cable as possible. Use shielded cable.
Connect the cable shield to the D-sub connector’s
shield.
Noisy analog signal
•
Analog In is not calibrated
Contact Service.
Analog In does not
measure expected
voltage
•
Analog Out is not calibrated
Contact Service.
Analog Out does not
generate expected
voltage
Instrument display
Possible cause and actionProblem
•
Display is broken
Generate a System error report and contact Service.
Absence of or incorrect
colors
ÄKTA avant User Manual 29035184 AE 411
8 Troubleshooting
8.7 Troubleshooting: Other components
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