Medrad ProVis Mark V, Service Manual

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Troubleshooting Guide
15 - 23
ONE DECIMAL DIGIT ONLY
Entered more than one number after pressing the decimal point.
Press RESET, then enter a value with only one decimal digit.
ONE DECIMAL POINT ONLY
Pressed the decimal point button more than once while entering a
value. Press RESET, then enter a value with only one decimal point.
PLUNGER POT MECHANICAL FAILURE
The feedback voltage received from the plunger position potentiome-
ter was not within allowable tolerances during the system mechanical
Self Test. This message may also be prompted if the reverse load but-
ton was pressed in order to verify the head pot, with the plunger in the
full reverse position. When power is applied to the injector, the plunger
must be advanced forward 2 ml for verification of proper pot opera-
tion.
Procedure:
1. Verify proper injector head cable connections.
2. Inspect the physical condition of the plunger pot and asso-
ciated pot gears.
3. If the condition persists, replace the plunger pot.
4. If the condition persists, replace the injector head.
**POWER DRIVE FAILURE
A fault occurred in the injector motor drive circuits during standby.
Remove power from the injector for 10 seconds, reapply power, and
retry.
Service Procedure:
1. If the condition persists, replace the Servo Control Card.
2. If the condition persists, replace the Power Drive Card.
PPI: BACKUP MEMORY
The backup memory on the PPI card failed a read/write exercise.
Remove and reapply power, then attempt to operate the unit again.
Service Procedure:
1. Clear the PPI memory by removing power from the injector,
then press and hold the Delta 1 and Delta 2 buttons. With
these buttons depressed, reapply power to the injector.
2. If the condition persists, replace the PPI Card.