Troubleshooting
Introduction
Review the information in the table below to troubleshoot your experimental
results.
Problem Cause
Solution
Power cord not connected or the
fuse has blown
Check power cord connections at
both ends or replace the fuse (see
page 19).
The LCD screen remains
blank and the fan does not
come on when the main
power is turned on
Secondary power off
Press the
Power
button on the
keypad.
Electrophoresis cell(s) are not
connected, are disconnected
during the run, or there is a
broken connection in the
electrophoresis cell
Check the connections to the power
supply and on your electrophoresis
cell to make sure the connection is
intact.
Display shows PAUSE
and Load Error
High resistance due to tape left on
a pre-cast gel, incorrect buffer
concentration, or incorrect buffer
volumes in the electrophoresis cell
Press the
Stop
button.
Correct the condition by making
sure the tape is removed from the
pre-cast gel, buffers are prepared
correctly, and the recommended
volume of buffer is added to the
electrophoresis cell.
Restart the method.
Display shows PAUSE
and Hardware Error
--
Reset unit by holding front panel
Power
button down while switching
rear power switch off and then on
again. Release front
Power
button.
Display shows PAUSE and
Temperature Error (if
temperature probe is
connected)
Buffer temperature exceeds the
preset temperature limit
Check the run conditions for the
correct current and power settings.
Make sure the buffer is prepared
correctly.
Raise the temperature limit.
“Current Limit Reached” is
displayed on the
Gel
Quantity
screen
Number of gels selected exceeds
the set current limit
Number of gels is limited by the
maximum current available.
Decrease the number of gels or
change the current settings.
“Power Limit Reached” is
displayed on the
Gel
Quantity
screen
Number of gels selected exceeds
the set power limit
Number of gels is limited by
maximum power available.
Decrease the number of gels or
change the power settings.
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