24
7200790 Service Manual for the HELION
®
XENION
®
Surgical Lighting System GB
8 Testing the Servomotor for the HELION M/M+ / L/L+
Figure 01
8.1
8.1
8.1
8.1
8.1
TTTTTesting the polarity of the servomotor
esting the polarity of the servomotor
esting the polarity of the servomotor
esting the polarity of the servomotor
esting the polarity of the servomotor
Dismantling the focus unit:
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
4
.
3. Remove the central lamp
5
using a soft cloth.
Fitting the focus unit:
4. Insert the focus unit
4
into the lamp so that both
the plug connectors
7
are aligned.
5. Switch on the power supply and the lamp.
Functional test:
6. Remove the focus unit
4
from the lamp again.
If the remaining lamp
5
is not in the centre:
• check if the position of the cables
6
is preventing
the lamp
5
from swivelling,
• change the polarity of the servomotor.
Changing the polarity:
7. Lift the sealing lip
8
, unscrew the sheet-metal
screws
9
and put the sheet-metal clips
C
in a
safe place.
8. Unscrew the two screws
B
and push back the
plastic cover
E
from the lamp.
9. Remove the lamp cover
A
.
10.Change the cables of the servomotor
D
on the
PCB.
Functional test:
WARNING – Electric Shock:
The following test must be carried out with
the power supply switched on.
Cordon off installation site and proceed
with great care.
11.Switch on the power supply and the lamp.
12.Carry out functional test. If the remaining lamp
5
is not in the centre:
•
test the servomotor according to Chapter 8.2:
Installing the lamp cover:
13.Insert the sheet-metal clips
C
into the lamp cover
A
and fit the lamp cover
A
as described above,
but in reverse order.
14.Check the secure positioning of the lamp cover
A