13
▲ After working for above 10 hours continuously, must cut off the microscope
about 30 minutes.
4.4
Replacement of fuse
（
Fig.5
）
A. Cut off power of microscope, and pull out the plug.
B. Unscrew fuse cap in the back of base, take out old fuse.
C. Replace a new fuse, then screw the fuse cap.
4.5 Microscope not in use
1.
Please cut off power, cover the dust cover, and place it in a cool and dry
environment.
2.
Objective and eyepiece must be placed in dry container with desiccant.
4.6 Regular checking the microscope for best performance.
▲
To maintain the instrument’s performance, suggest checking instrument
regularly. If any trouble need to repair, please contact with the
anufacturer or local dealer.
5. Troubleshooting
Trouble
Causation
Remedy
Switch on but bulb dark.
Plug is unreliable
Plug in again
Bulb is broken
Change bulb
Fuse is broken
Change fuse
Bulb is flickering or
brightness is unsteady.
Bulb is unstable
Insert it again
Bulb is broken
Replacing bulb
Brightness of view field isn’t
enough or uneven.
Bulb specification doesn’t meet the
requirement.
Replacing bulb
Brightness is too low.
Rotating potentiometer to
adjust.
Objective isn’t in correct position.
Make the objective in correct
position.
The size of iris aperture is too small.
Adjust the size of iris aperture.
