106
Replacing the 12 V/100 W halogen lamp
n. b.:
Remember to disconnect from the mains!
Leave the protective cover on until the lamp
is inserted. Avoid making fingermarks, or
wipe off immediately.
●
Switch off the microscope and the power unit
(if used).
●
Disconnect the appliance cable of the
microscope and the power unit.
●
Disconnect the transmitted light illumination
column from the power supply on the back of
the microscope.
●
Screw off the lamphousing with a 3 mm Allen
key.
●
Remove the faulty lamp.
●
Insert the new lamp as far as it will go into the
sockets of the lamp holder.
●
Mount the lamphousing and screw down with
a 3 mm Allen key.
●
Reconnect the transmitted light illumination
column to the power supply on the back of the
stand.
●
Connect the microscope and, if used, the
power unit to the mains.
The additional fluorescence lamp does not
respond.
●
Make sure the cable connections lamp – pow-
er unit – mains are correct and complete.
Possible causes for the failure of the
fluorescence lamp are: a defect fuse of the
power unit, a defect lamp or a defect burner in
the lamphousing.
Fig. 83
Lamphousing for transmitted light illumination
1
Cover,
2
Cover screws
Fig.␣ 84␣ ␣
Lamphousing for transmitted light illumination (cover
removed)
1
Lamp holder (pin base) with 12 V 100 W halogen lamp,
2
Collector,
3
Heat protection filter
1
2
1
2
3
