OEC 9800C-Arm, Service Manual, Page: 134 / 490

X-ray On, X-ray Disable
Fault Isolation
Failure Possible Cause Remedy
X-ray Switch
Bad switch Make a fluoro exposure using the Handswitch or Footswitch. If system does not
perform properly, Check the X-ray switch
. Check Operation of Control Panel. Follow X-
ray signal on Schematics.
No Exposure
from
Handswitch or
Footswitch Bad Handswitch or
Footswitch Make a fluoro exposure using the X-ray switch. If system does not perform properly,
Check the Handswitch or Footswitch.
Check Security, X-ray-On and X-ray Enable lines to ensure interlock not broken.
Check ARCnet communications to X-Ray Controller PCB and Fluoro Functions PCB.
Bad Footswitch
Mode Switch PCB seating and
cable connections Make a mode change using the Handswitch.
Check cabling and PCB seating.
X-ray Keyswitch Keyswitch in wrong
position or bad
wiring/switch
Key must be in horizontal position to generate X-rays and operate column lift. Key in
vertical position disables these functions.
Fast Stop
Switches
Inoperative Bad Fast Stop
Switches Operate one Fast Stop Switch. Make sure X-ray tube stator stops and the Column does
not go up or down. After reboot, make the same test using the other Fast Stop switch.
If either switch fails to immediately stop the system, Check the switch module.
6
Service Periodic Maintenance Contents Schematics Illustrated Parts Installation