Instruction manual

Replacing the Fuse

For additional fuses, contact Major Science co. ltd.

To replace the fuse:

1. Turn off the main power switch on the rear of MS 250V or M S 300V Power

Supply and detach the power cord from the rear of MS 250V or M S 300V

Power Supply.

2. Open the fuse compartment located inside the Power Entry Module by

inserting a small flat blade screwdri ver into the slot below the ON/OFF

switch. Turn the screwdriver to gently pry open the fuse compartment.

Note: The fuse compartment will not open with the power cord in place.

3. Pull the fuse holder out of the compartment and inspect the fuse. If the fuse

is burned or there is a break in the fuse element, replace the fuse with an

identical type of fus e (2A/250V ~) as provided in the fuse holder (see figure

below).

4. Place the fuse holder back into the compartment.

5. Snap the cover closed.