Tektronix 2710
From Self-sufficiency
The Tektronix 2710 portable Spectrum Analyzer with a Frequency range from 10 kHz to 1800 MHz. The 2710 are highly portable featuring pushbutton measurements, high stability and a fast warm-up time.
Similar Analyzers
Tektronix 2712 They are almost identical functionally (with the keyboard being the exception). You should be able to diagnose 99% of your problems using that service manual.