Troubleshooting:
ELECTRICAL PROBLEMS
PROBLEM CAUSE
SOLUTION
The bulb does not work. Outlet inoperative.
Cable not connected.
Bulb burned out.
Fuse blown.
Wrong Bulb.
Have it repaired by a qualified
specialised technician.
Connect the cable to the power
source.
Replace bulb.
Replace fuse.
Replace with appropriate bulb.
Bulb burns out
immediately.
Wrong bulb.
Replace with the appropriate bulb.
Bulb flickers.
The bulb is not inserted correctly into
socket.
Bulb on the point of burning out.
Fuse cover badly closed.
Bad connection with power source.
Insert bulb correctly.
Replace bulb.
Close correctly.
Have repaired by a qualified
specialised technician.
Fuse blown quickly
Wrong fuse.
Replace with appropriate fuse.
Fuse blown instantly
Short circuit.
Have repaired by a qualified
specialised technician.
IMAGE QUALITY
PROBLEM CAUSE
SOLUTION
No image.
Objectives badly positioned.
Adjust, until end of the dovetail.
Poor resolution.
Eyepieces dirty.
Objectives dirty.
Clean eyepieces.
Clean objectives.
Spots, or stains in field
of view.
Eyepieces dirty.
Clean eyepieces.
* NB. Stains in field of view may also be attributed to dirt on the inside of the eyepiece. It is recommended
therefore that the lens be cleaned by a recognised service technician.
MECHANICAL PROBLEMS
PROBLEM CAUSE
SOLUTION
It does not stay in focus. The head drops down.
Adjust the tension of the coarse focus
knob.
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