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Section 6
Many operating problems may be solved by carefully reading and following the
instructions in this manual accordingly. Some suggestions for troubleshooting are
given below. Should these suggestions not resolve the problem, contact our
SERVICE DEPARTMENT or a distributor in your region for assistance. If
troubleshooting service is required, please include a full description of the problem.
Problem
No Display / lights
Repeated fuse
broken
Operation stops
Error message
Trouble shooting and Maintenance
Cause
No AC power
AC power cord is not
connected
The fuse has blown
Hardware failure
Electrophoresis leads
are not connected to
the power supply or to
the electrophoresis
unit(s), or there is a
broken circuit in the
electrophoresis cell
High resistance due to
tape left on a pre-cast
gel, incorrect buffer
concentration, or
incorrect buffer
volumes in the
electrophoresis cell
Over current(400mA
limitation reached)
Check if the power supply is unplugged,
or AC power source problem
Check AC power cord connections at both
ends. Use the correct cords.
Replace the fuse
Contact Major Science service
department
Check the connections to the power
supply and on your electrophoresis cell to
make sure the connection is intact; check
condition of wires in electrophoresis unit.
Close the circuit by reconnecting the
cables. Press START/STOP to restart the
run.
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 unit.
Check if the buffer concentration is
appropriate. Excessive buffer
concentration may cause over current
issue. To clear the error message, press
the START/STOP button again
16
Solution
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