[Test-Equipment] Racal Dana 5001 DMM

[Stewart Bryant]

I have two of these and I am trying to get the second one going.

It powers up with Error4, and reads slightly low in voltage.

Does know where I can get a service manual/schematic for
on of there at a reasonable price? I am only repairing
it for fun, so it's not worth spending a fortune on.

Anyone know what Error4 is, and how how to calibrate
the instrument?

Thanks for your help

Stewart G3YSX