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3.2 Blower Fan Speed Adjustment
1. There are two hot-swappable 75×75×28 mm blower fans for ventilation at rear of NA341TB3.
After loosening the two thumbscrews on the fan module, the blower fan can be pulled out of
the storage enclosure.
2. The rear 75×75×28 mm blower fan speed can be adjusted. As the blower fan module is
pulled out, there are four sets of jumpers labeled with 6V, 8V, 10V, 12V from top to
bottom on the fan connector board. The default setting is the jumper being placed over
pin 7 and 8 for label 6V for slowest speed. The speed increases from label 8V to label 12V.
As jumper is not placed over pins, the fan will spin at 12V full speed.
6V
8V
10V
12V