Are there jumpers on a Mac g4 Mdd

I am swapping from a 867 Mirror drive to a 1.25 ghz processor on a Mac g4 MDD. Are there any jumpers that need to changed???
Please Help
Thanx

Have a search on google for the Apple Technical Service Manual for the MDD (it also covers the FW800). It's about 165 pages of detailed diagramed hardware topics for the MDD. It's under 4MB as a pdf.
I found a note in it this morning about upgrading the CPU, it says to check the fabrication level, stamped on the motherboard close to the fifth PCI slot. If it's one of 820-1308, 820-1440, or 820-1445, you need a new logic board with the new processor.
Enough said, you can read the document yourself to get the full details. If you have trouble finding it, have a search in this forum, I'm sure someone's posted a link to it before.

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