16
Section 6
Trouble shooting and Maintenance
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
Cause
Solution
No Display / lights
No AC power
Check if the power supply is unplugged,
or AC power source problem
AC power cord is not
connected
Check AC power cord connections at both
ends. Use the correct cords.
The fuse has blown
Replace the fuse
Repeated fuse
broken
Hardware failure
Contact Major Science service
department
Operation stops
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
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.
High resistance due to
tape left on a pre-cast
gel, incorrect buffer
concentration, or
incorrect buffer
volumes in the
electrophoresis cell
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.
Error message
Over current(400mA
limitation reached)
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
