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
1
SUPPLIES
•
•
2
TOOLS
•
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
) to reveal the HV Unit.
3. Switch off the electrical power supply on the rotary switch in the Generator cabinet (position 0).