33
7200790 Service Manual for the HELION
®
XENION
®
Surgical Lighting System GB
11 Testing the Electrics of the HELION M / L Lamp
Figure 01
11.1
11.1
11.1
11.1
11.1 TTTTTesting the voltage at the focus unit
esting the voltage at the focus unit
esting the voltage at the focus unit
esting the voltage at the focus unit
esting the voltage at the focus unit
The test is described using the HELION L as an ex-
ample.
Removal:
1. Unlock the central hand grip
2
by means of the
unlocking device
1
and remove it.
2. Undo the three screws
3
and remove the focus
unit
5
.
Preparing for measurement:
3. Place three test prods
4
on the contacts of the
focus unit
5
.
4. Insert the focus unit
5
.
Carrying out measurement.
WARNING – Electric Shock:
The following adjustments must be made
with the power supply switched on.
Cordon off installation site and proceed
with great care.
5. Switch on the power supply and the lamp.
6. Measure the voltage with a voltmeter:
• The voltage must be 23 V +/- 0.3 V.
• In the case of voltage deviations, reset the volta-
ge on the transformer in accordance with the spe-
cified values in the table.
7. Remove the three test prods
4
.
Installation:
8. Insert the focus unit
5
into the lamp so that both
the plug connectors
6
are aligned, then activate
the lamp.
Functional test:
9. Carry out functional test.