TROUBLESHOOTING GUIDE
7
Under certain conditions, performance of the unit may be adversely affected by factors other than defects. If problems occur,
please review the following list and take remedial action as needed. If you cannot solve the problem after checking the entire
list, please contact your local Olympus representative for assistance.
Problem Lamp Cause Remedy Page
Bulb does not light.
LED Power is not ON. Set the main switch to “ I ” (ON). 10
Common Power cord is unplugged. Plug power cord into the power
outlet.
37
Common Connectors are connected
improperly.
Connect connectors securely.
37
Halogen Bulb is not attached. Attach a halogen bulb. 34
Halogen Bulb is burned out. Replace bulb. 34
Halogen The TL4 is not ON. Set the main switch of the TL4 to
“ I ” (ON).
37
Bulb is blown immediately. Halogen The bulb is not a designated
one.
Replace bulb with a designated
one.
1
Field of view is dark.
LED The LIM setting is inappropriate. Set LIM again. 13
Common Aperture and field iris diaphragms
are not opened wide enough.
Adjust them to proper sizes.
12
Common Light path selector knob is set to
the
position.
Set the knob to the
or
position.
22
Common Condenser is not properly
centered.
Center the condenser.
12
Common Condenser height is too low. Adjust correctly. 24
Halogen ND filter is engaged. Disengage the ND filters. 15
Brightness cannot be varied.
LED LIM is not ON. Switch the LIM function OFF. 13
Halogen LED brightness adjustment knob
is rotated.
Use the brightness adjustment
knob of the TL4.
37
Common
Condenser is not properly
centered.
Center the condenser.
12
Common Condenser height is too low. Adjust correctly. 24
Field of view is obscured or not
evenly illuminated.
Common Light path selector knob is set in
an intermediate position.
Set to the desired click position.
22
Common Ob j ecti ve is n o t cor rect l y
engaged/
Make sure that the revolving
nosepiece clicks properly into
place.
12
Common Revolving nosepiece is not
attached properly.
Push the slide dovetail all the way
until it is stopped.
35
Common
Condenser is not attached
properly.
Re-attach it .
36
Common An objective that falls outside
of the condenser’s illumination
range is used.
Use a condenser to match the
purpose. 24
Common
Condenser is not properly
centered.
Center the condenser.
12
Common Field iris diaphragm is stopped
down too far.
Open the field iris diaphragm until
it circumscribes the field.
12
Halogen Bulb is not mounted correctly. Push the pins of halogen bulb all
the way until the stop position.
34
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