Summary

5" monochrome monitor. Often found rack mounted in sets of three. Picture is very sharp despite its small size.

Manuals

No documentation is freely available online at this time. You can purchase the service manual from ServiceManuals.net (no affiliation to CRTDB).

Notes

Rack mounted units can be separated and used individually by replacing the power cord.

If your unit does not power on (no red light on the front), first check the fuse inside each unit. If the fuse is good, likely the power switch has failed. They are prone to internal failure similar to some Commodore monitors. You can bypass the switch by cutting it out of circuit and wiring the transformer directly to the fuse and line input wires. See gallery below for example.