Major Science MP-250V Buku Petunjuk - Halaman 15

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Troubleshooting Guide

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 with

alarm: The screen

displays

Operation stops with

alarm:

Display shows

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

Check if MS 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.

- Verify that the running buffer is correct.

- Verify the all cables are attached correctly

- Turn the Power switch off and on again;

restart application.

- If you cannot restart the instrument, turn off

the power, disconnect the power cord from

the outlet, and contact Technical Service.

Solution