HP 70000 series - Operating Error Codes

User
Application
Errors
0001
{
0999
0070
RF Preamplifier
Cause: The HP 70621A preamplier or HP 70620B preamplier Option 001 RF preamplier
has failed its diagnostic test. This error will occur if the signal level gain through the RF
preamplier path at 300 MHz is less than or equal to 0 dB.
Cure:
The
most
likely
failure
is
the
RF
preamplier
microcircuit.
Troubleshoot and repair this
component
and
its
power
supply
.
6-12 Error Messages