HP8903A - 2414 prefix A6 board 08903-60105

Hi!

My HP8903A has a fault on the A6 board (amps / attenuators from oscillator to output) and the version of the board is not covered in any of the various manuals I have available. The serial prefix is 2414A and the board is 08903-60105. I think it's a stepping stone to the 8903B. It has 3 relays on it (not 2 or 4!) but the gain balance looks wrong (to get correct output level from instrument the oscillator level is very low).

I have manuals for 1942A /2006A and 2450A to 2948A for 8903B.

Does an intermediate manual exist or will it be photocopied revision sheets. I think Artek may have one with the revision sheets but this doesn't look fun....

Alan