Troubleshooting
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11 Troubleshooting
In the event that the product does not function properly, isolate the problem to determine if it
originates in the host computer, the NMR instrument, or the sample changer.
This chapter explains how to troubleshoot sample changer problems. If you cannot solve a
problem using the steps given in this chapter, you should contact BRUKER.
11.1 Power System Problems
A possible cause of system malfunction is a problem in the power system. If the system is not
functional, it is possible that it is not receiving power. If this is the case, both of the LED
status indicator lights will be off. To troubleshoot this problem, complete the following steps in
sequence until the problem is solved:
• Check that the power switch on the sample changer is turned on.
• Check that the power cord is plugged in firmly between the power input on the sample
changer and the external power supply and also between the power supply and the wall
outlet.
If the cable is plugged in, ensure that it is not damaged in any way.
• Check that the LED on the power supply is illuminated.
If the LED is not illuminated, check the wall outlet using a device approved for that
purpose.
If the wall outlet is working and the voltage is acceptable, unplug the external power
supply from the sample changer, but leave it plugged into the wall.
– If the LED is not lit, the power supply is faulty and requires replacement.
– If the LED is lit when unplugged from the sample changer but turns off when plugged
into the sample changer, the sample changer may have an internal short and requires
repair.
• If the external power supply LED is illuminated while plugged into the sample changer,
cycle the sample changer power switch. The gripper should move up and the sample
changer should initialize. After initialization, the status LED on the front of the sample
changer should light up.
– If the cords are properly connected, power is available, the external power supply is
good, and the device still does not initiate, continue troubleshooting.
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