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C-arm rotation brake
MAMMOMAT Balance
SPB7-115.840.01 Page 53 of 62
Siemens AG
Troubleshooting Guide
Rev.02 10.04
Medical Solutions
C-arm Rotation brake
C-arm rotation brake is made of a disk brake.
Disk brake caliper is operated by means of motor with gear box
08883659.
Brake locked unlocked positions are detected by means of
MW5
and
MW6
,
08883782
microswitches.
LOCKED
UNLOCKED
MW5
CN32 PCB 03-188 pin 2
+5 Vdc
0 Vdc
MW6
CN32 PCB 03-188 pin 3
0 Vdc
+5 Vdc
Motor MT3 is connected to CN21 PCB 03-188
Cable CV0161 connects Motor and microswitches to PCB 03-188
If sensing microswitches are defective, motor turns continuously and lock unlock function doesn’t
work properly.
For easy static investigation of brake problems, DIP1 of SW2 is provided to disable C-arm motor.
SW2
DIP1 =
ON
C-arm Brake, disabled for service
Brake force adjustment
Brake force is adjusted increasing decreasing distance between the two white plastic parts A / B
connected by means of screw C.
Partially unscrew the little screw D that stays on the side of the cylinder, and totally screw E.
Turn part B as necessary, reassemble parts and check for effect on brake force.
When finished tighten screw D and C.
D
A
B
C
MW6
MW5
CALIPER
E