Performs repairs and adjustments on designated cryptographic equipment and associated accessories.

Diagnoses cause and locates source of trouble, testing circuits and equipment for faulty operation.  Makes necessary inspections, adjustments, repairs (including improvisations), replacements or substitutions of such items as wiring, relays, keys, jacks, plugs, brushes, switches, rectifiers, gears, pens, and ratchets.

Uses electrician's small hand tools and test instruments.

Must have cryptographic clearance.

Must have thorough knowledge of the theory of d-c and a-c power. Must be able to read and understand adjustment drawings and circuit drawings. Must have appropriate knowledge of other subjects and devices associated with the particular
designated cryptographic equipment.

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