HP 27140A Hardware Reference Manual page 31

Asynchronous 6-channel multiplexer (with modem control)
Table of Contents

Advertisement

The asterisks "*" in the diagram tie the phrase "*Tests
xxx"
to the cell
"Replace with new Sub-assembly*". You should permanently replace the
sub-assembly being tested at the branch which directed you to this cell.
Switching the cables between two peripherals at the panel
will
help deter-
mine if the trouble is in the RS-232-C Junction Panel. If the trouble moves
to the new port terminal, then the problem was on the computer-to-junc-
tion panel side of the circuit. At this point, having eliminated the others,
the junction panel is the only remaining suspect component.
If you must contact HP resources, please begin with you HP Sales and
Support Office. (A list of these offices is included at the end of this
manual.) If the solution is beyond their capabilities, the Sales and Support
Office
will
contact the appropriate HP entities to get the problem solved.
Troubleshooting 4-3

Advertisement

Table of Contents
loading

Table of Contents