Situation: Mechanical encoders need to be replaced as they wear out with use, resulting in erratic knob behavior. Agilent has determined some 33220A encoders have been subject to early failure.
Solution/Action:
Customers with 33220A units displaying intermittent behavior of the knob should contact their local Agilent Service Center to arrange to have their instruments exchanged free of charge.
Customers have the option of repairing their own instruments by following the instructions on the subsequent pages. First order 33220-80002 front panel kit. The kit contains 3 parts: