GE Healthcare
Senographe DS
Revision 1
Service Information and Procedures Class A 2385072-16-8EN
Job Card CAL A031 - Lift Calibration
Page no. 1687
Chapter 9
JC-CAL-A-031.fm
Job Card CAL A031 - Lift Calibration
Chapter 9
1
SUPPLIES
None
2
TOOLS
3
REQUIRED EFFORT
Personnel: 1 Field Engineer
Time: 15 minutes
4
SAFETY PRECAUTION
No specific safety precautions are applicable.
5
PREREQUISITES
None
6
PROCEDURE
6-1
Principle
The illustration below highlights the important principles behind calibrating the lift.
Lower lift travel limit
Upper lift travel limit
Lift travel limit
Measured then set
Floor
Ceiling
Upper optical
fork position
Derived from the lift
travel limit plus the
lower lift travel limit
Set in ADS software
and must correspond
to upper optical fork
position
Top
Middle
Bottom
Lift Potentiometer
Lower Reference
Voltage
Lift Potentiometer
Upper Reference Voltage
650 mm — this automatic stop
distance during the calibration
phase is determined by the Lift
Encoder which accurately trans-
lates lift screw turns to height
travelled.
650 mm
750 mm
850 mm
1
2
4
Lif
t Bo
ard F
irmw
are
Set with FOV
size button
3
Set with FOV
size button
670 ±2 mm
0 mm
Lower optical
fork position
(fixed)
LE LP
Key
LE
: Lift Encoder
LP
: Lift Potentiometer