HP 1175C - Manual (Page 27)

HP OfficeJet Pro User’s Guide 2-17
7 A “Testing Device Connection” message is displayed while the
installation program tests the cable connection between your
computer and the HP OfficeJet Pro.
If the bi-directional communications test fails, you will need to
set the front panel language and page size manually, following
the instructions on page 3-9. The communications problem must
be resolved before you will be able to scan.
After installing your software, refer to “Messages on Your PC,
Cable Test Failed” under Troubleshooting in the 1170C Series
Toolbox on your Windows desktop.