Troubleshooting Guide
15 - 17
**FLOW RATE D/A >0
Output of the Flow Rate DAC is not zero during standby. Replace the
Servo Control Card.
FWD/REV SWITCH DEPRESSED
One of the head load buttons is pressed or shorted while the user is
attempting to arm. Press RESET, NO, NO then attempt to ARM again.
Procedure:
1. Check for shorts in the injector head cable, wiring, and
Control Panel.
2. If the condition persists, replace the injector head.
3. If the condition persists, replace the Servo Control Card.
**FWD MOTOR MOVEMENT
The injector was armed, followed by the forward motor movement of 2
ml or more without a forward load command. This message can be
triggered by either an electrical malfunction or improper operating
technique.
To verify electrical malfunction:
1. Arm the injector, then check the motor knob for plunger
movement. If movement occurs, the line frequency may be
miscalibrated.
2. Recalibrate or replace the Power Drive Card.
3. If unable to confirm electrical malfunction, this message
also appears if the manual knob on the rear of the head is
turned after the injector is armed, or during the arming
sequence.
**HAND SWITCH SHORTED
There is a short in the hand start circuit, or the start switch is closed
during the ARMing sequence.
Procedure:
1. Ensure that the start button is not pressed.
2. Disconnect any auxiliary start connections (footswitch,
auxiliary handswitch, etc.), then retry.
3. If the injector now functions properly using an external start
switch, check the start switch and cord reel for shorts and
improper closure.
4. If the condition remains with the cord reel disconnected,
replace the I/O Card.
ILLEGAL RECALL FUNCTION
The operator attempted to recall a program number above 50 that is
not available. Press RECALL, then select the correct program.
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