Chapter 9 Page no. 1006
JC-DIAG-A-010.fm
GE Healthcare Senographe DS
Revision 1 Service Information and Procedures Class A 2385072-16-8EN
Job Card DIAG A010 - No Lift or Rotation Movement
If there is no lift or rotation motion, you can check to see whether the H-Bridge is faulty by using the fol-
lowing steps:
1. Request a rotation or lift movement on the Senographe.
2. Immediately observe the DS4 and DS8 diodes on the DC Node Board.
If the H-Bridge is faulty then the:
• DS8 diode remains on all of the time
• DS4 diode is initially on while the microprocessor assesses whether there is a rotation or lift
movement, and after a time-out the DS4 diode turns off
If the H-Bridge is faulty change the appropriate board (see Job Card D/R A221 - Rotation Board on
page 1223 or Job Card D/R A201 - Lift Board on page 1161).
If the H-Bridge is not faulty then another component in the system is faulty.
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