Chapter 5 Service Instructions
HF Series X-ray Generators - Service Manual Revision W
Quantum Medical Imaging, LLC
5-45
Uncali-
brated
Film
Screen
Selected
Film Screen never calibrated, or
calibration data corrupt
Calibrate in accordance with instruc-
tions provided in Chapter 3 (non-Q-
Bus Systems) or Appendix B (DiRex
Systems) or Appendix D (all other Q-
Bus Systems).
Unhan-
dled
Exception
An unknown error occurred. Call Technical Service/Support.
V24
Brake
Missing or incorrect +24 VDC sup-
ply voltage (supplies voltage for
operation of external equipment,
e.g., tube stand, wall stand, etc.).
1. Access Service Mode>Calibra-
tion>AD Calibration menu. Verify
+24V brake voltage is within toler-
ance per Table 3-8. If not, cali-
brate in accordance with "A/D
Calibration Procedure" in Chapter
3.
2. Check for +24 VDC at TB7 on
Interface Board A9 (AY40-023T).
3. Check fuse F9 on Interface Board
A9.
4. If the above actions do not correct
problem, replace Line Monitor
Board A8.
Vref+ Missing or incorrect positive volt-
age reference (Vref+) value
returned.
Call Technical Service/Support.
Vref- Missing or incorrect positive volt-
age reference (Vref-) value
returned.
Call Technical Service/Support.
Table 5-1. Error Messages and Possible Cause(s)
Error
Message
Possible Cause(s)
Remedial Action