Appendix B—Troubleshooting the
half-
Y
The
half-Y
has no field-serviceable parts. This chapter
presents some quick fixes to common problems.
If you experience the following problems...
Unable to make switches from the front panel
The front panel may be locked. Make sure the LED for the
level you want to make a switch on is illuminated. Switches
occur on the level(s) with the illuminated level key(s).
Unable to communicate serially
Check all your communication protocols and connector pins.
l
If you ordered an RS-232 enclosure, only use an RS-232
cable.
l
If you ordered an RS-422 enclosure, only use an RS-422
cable.
Too many signals are switching
Both levels may be activate. If both levels are activate, de-
activate one of the levels. Switches only occur on active
levels.
