An LRU is a unit that can be replaced in the field.
Urine cup controller
a field replaceable unit
Field Replaceable Unit
i/o card
A CRU is a Customer Replaceable Unit. A FRU is a Field Replaceable Unit. A FRU needs to be replaced/repaired by a qualified field support person, while a CRU could be replaced by the user/customer.
What component may be considered a field replacement unit?
no it is not you replace the whole unit
The oil sending unit is located on the front of the engine block, just below the power steering pump. The unit screws in and is easily replaceable.
The acronym "FRU" can refer to many different things. Some examples of things that "FRU" stands for include "Field Replaceable Unit", "Force Research Unit", and "Federal Reserve Unit".
Discharge line
Generally yes. I recommend using a power supply tester- these are not expensive and readily available.
FRU (Field Replaceable Unit)