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Steve Simpkin · 07-17-2023, 10:09 AM

Ignacio,
That is correct. You cut that jumper to display a comma for the radix point, as is used in many European countries.

This subject came up recently in a forum post about Fixing a HP-34C.

In that thread, Andi (AndiGer) posted a link to the following older thread, where Katie discusses this and has a couple of photos of the jumper.
https://www.hpmuseum.org/cgi-sys/cgiwrap...read=20346

Here is the power supply photo that closest resembles yours.
[Image: Spice2.JPG]

Tony (Teenix) also posted a link to the E-Series Service Manual that discusses the jumper on page 3-7.