Agilent Technologies 89410A Service Manual page 27

External keyboard does not work
NVRAM or Battery failure message displayed
Nonvolatile states not saved after power cycled
4
Follow the recommended troubleshooting test until you locate the
faulty assembly.
5 Replace the faulty assembly and follow the directions in ''What to do
after replacing an assembly'' in chapter 3, ''Replacing Assemblies
page 3-5.''
Troubleshooting the Analyzer
How to troubleshoot the analyzer
DIN connector,
page 1-92
Memory battery,
page 1-93
1-9