Can CSPPC SCSI controller use LVD Hard Drives?

[amiga_user]

Yes. LVD is backward compatible.
I use LVD drive with my CSPPC.
Remember that:
- LVD drives DO NOT has terminator - so the HDD-end of SCSI chain has to be terminated my external terminator (LVD/SE type)
- CSPPC doesn`t has terminator either so you have to use another one on CSPPC-end of the SCSI chain also.
On the LVD HDD there is often a juper "SE mode" which force the drive to work in SE mode (at least it`s the case on IBM LVD SCSI HDD). It may help.

[amiga_user]

Which jumpers do you think I need to close/activate

Try to activate: FORCE SE and TERMPWR (and set proper SCSI ID)
If you have 68pin CDROM drive, it should has built-in terminator - mine Plextor UltraPleX Wide has one - activate it (and also enable "parity" jumper on the CD-ROM).