VII. TROUBLESHOOTING
1. No power indication:
a. Ensure programmer is plugged into the proper power receptacle and power is
available at the receptacle.
WARNING:
If the programmer has been found to been
connected to an incorrect power source, return the monitor to AMI
for evaluation to determine the extent of the damage. Frequently,
damage of this kind is not visible and must be determined using test
equipment. Nevertheless, connecting the monitor to an incorrect
power source could damage the internal insulation and/or the
ground requirements, thereby, possibly presenting a severe
life-threatening electrical hazard.
b. Check to be sure the power switch is on.
c. Ensure line fuse is not blown.
d. Ensure all connections are secure and there are no broken wires, cold solder joints,
shorts, etc.
2. Erratic Operation:
a. Ensure all wires are connected to the proper connectors.
b. Ensure the magnet power supply is in the voltage programming mode.
c. Non-linear magnet ramping can be caused by attempting to exceed the positive or
negative voltage available for the magnet from the power supply. The voltage limit
function will also result in non-linearities.
d. Ensure the local controls on the power supply are at the maximum setpoint to allow
the programmer to have control.
e. Polarity of the programmer output voltage and the current shunt input voltage must be
as indicated on the rear panel of the programmer. Twisted, shielded pairs of wires
should be used for both sets of voltage leads.
f. Ground loops can cause a variety of problems. The black OUTPUT terminal is the
common point for the programmer and can be grounded to the system ground if
necessary. Avoid more than one ground in the system.
3. Failure to program (ramp up):
a. Current limit set to zero.
b. Improper polarity (see #2 above).
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