Medrad ProVis Mark V, Service Manual

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Troubleshooting Guide
15 - 3
SAC Test Points The following information refers to the test points on the Service Access
Card. The measurement should be within 10% of the values given below.
Values are with reference to analog ground, test point 18, unless other-
wise specified.
Test Point / Description Typical Values
1 OVR. CUR. REF. -6 VDC at all times.
Overcurrent Reference
2 OVR. CUR. SHTDWN +14 VDC at any status
Overcurrent Shutdown 14 VDC during overcurrent
shutdown, and then only briefly at
the onset of a high Flow Rate
injection in the 150 ml mode.
3 PLNG. POS. +0.25 - +9.60 VDC, depending on
Buffered Plunger Position plunger position.
4 FWD. REV. IND. Standby = 5 VDC
Fwd. or Rev. Indications Fwd activated = 0 VDC
Rev activated = 0 VDC
5 ERROR SIG. Standby/Loading=0
Error Signal Between zero and +15 VDC during
an injection. Less than +6 VDC
during most injections.
6 MSPOS +0.25 +/- 9.60 VDC, depending
Buffered Mech. Stop Pos . on Mechanical Stop position.
7 TURLIMSW +24 VDC when turret in place and
Turret Limit Switch the Mechanical Stop is not
engaged. Zero when the turret is out
of position or the stop is engaged.
8 MECH. STOP MOT. +24 VDC during standby; zero to
Mechanical Stop Motor (+) +24 VDC (switching) when the
Mechanical Stop is moving in
reverse. Zero when armed, the
stop is moving forward, +24 VDC
when the stop is positioned.
9 MECH. STOP MOT. -24 VDC during standby; zero when
Mechanical Stop motor (-) the Mechanical Stop is moving in
reverse; may oscillate as stop is
positioned; stays at zero when stop
is positioned; -24 VDC when disarmed.