GE Healthcare Senographe DS
Revision 1 Service Information and Procedures Class A 2385072-16-8EN
Job Card D/R A404 - HV Unit
Page no. 1559 Chapter 9
JC-DR-A-404.fm
Job Card D/R A404 - HV Unit Chapter 9
1SUPPLIES
• HV unit, equipped kV/mA
• HV grease
2TOOLS
• Standard Tool Box
3 REQUIRED EFFORT
Personnel: 1 Field Engineer
Time: 90 minutes
4 SAFETY PRECAUTIONS
Steps in this Job Card tell you when to take appropriate action to avoid electric shock.
5 PREREQUISITES
None
6 PROCEDURE
CAUTION
The HT block and kV/mA board assembly is factory calibrated. do not attempt to adjust
potentiometer P1 (HT probe frequency compensation).
6-1 Removal and the HV Unit
1. Switch off the electrical power supply from the Mains Distribution Panel in the room. Apply an appro-
priate LOTO padlock and label. Wait 10 minutes for the components within the Generator to dis-
charge.
2. Remove the four Generator side panels (see Job Card PHY A042 - Remove/Reinstall Generator
Covers on page 513) to reveal the HV Unit.
3. Switch off the electrical power supply on the rotary switch in the Generator cabinet (position 0).
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