9600 Service Manual - gmecorp-usa.com

30 C-Arm Control
INTERLOCK SECTION
DS1, K1, Q1, Q2, and associated components comprise part of the +24V
generator interlock. When DS1 is on it indicates the interlock circuit has been
started. This is a result of PIO U27 pin 25 toggling, under software control, every
10 mS. This causes Q1 and Q2 to activate K1 and send +15 VDC out the Analog
Interface PCB causing DS1 to light. See the Interlocks/Stator section of this
manual for details of the interlock circuit.
X-RAY SWITCH LOGIC
Opto-isolators U50, U51, and U52 receive X-ray switch closure information from
the control panel assembly, footswitch, and handswitch. These inputs are
examined by software at PIO U38 and used by the Technique Processor to
initialize the generation of X-rays. See the X-ray On/Disable section of this
manual for details of this circuitry.
STATOR SENSOR
When either 115 or 40 VAC is directed to the X-ray tube stator windings, U19
and U24 receive a low voltage input from current transformer T1 on the
Power/Motor Relay PCB. This is translated into a logic low and is input to pin 10
of PIO U27 informing the Technique Processor that current is flowing to the
stator and therefore rotating. See the Interlocks/Stator section of this manual
for details of this circuitry.