29
7200790 Service Manual for the HELION
®
XENION
®
Surgical Lighting System GB
10 Testing the Electrics of the Support System
10.3
10.3
10.3
10.3
10.3 Dismantling the light head
Dismantling the light head
Dismantling the light head
Dismantling the light head
Dismantling the light head
WARNING - Sudden release of spring arm:
• The spring arm
1
is under high tension. If
the lamp
6
is not removed in the upper-
most spring arm position, the spring arm
1
releases suddenly, springing upwards,
and can cause serious injury.
• Only dismantle the lamps
6
when the sp-
ring arm
1
is in the uppermost position.
1. Place the spring arm
1
(in the example: Acrobat
2000) in the uppermost position.
2. Unscrew the cross-recessed head screw
3
and
push the sleeve
5
up.
3. Using a small screwdriver, remove the locking seg-
ment
4
from the slot
2
and put it in a safe pla-
ce.
4. Remove the light head
6
with cardanic suspensi-
on from the spring arm
1
and carefully put it
aside.
10.4
10.4
10.4
10.4
10.4 TTTTTesting the cables in the spring arm
esting the cables in the spring arm
esting the cables in the spring arm
esting the cables in the spring arm
esting the cables in the spring arm
that lead to the contact block in the ex
that lead to the contact block in the ex
that lead to the contact block in the ex
that lead to the contact block in the ex
that lead to the contact block in the ex-----
tension arm
tension arm
tension arm
tension arm
tension arm
1. Carry out an all-pole contact resistance test bet-
ween the spring arm (sliding coupling) and the
contact block in the extension arm:
•
If the resistance is infinite, the spring arm must be
replaced in accordance with Section 10.5.
• If the resistance is almost zero, the cables in the
light head and the cardanic suspension must be
tested:
-
Carry out a contact resistance test between the
input terminal of the electronics and the sliding
connector on the cardanic suspension (replace
entire cabled cardanic suspension if necessary).
Figure 03
