ICS ELECTRONICS 4863 Manual page 123

5.3 TROUBLESHOOTING
Troubleshooting is broken down into self test error and those that are caused
during usage.
5.3.1 Self Test Errors
The 4863 and 2363 indicate self test errors by blinking one or more of their
LEDs at a 2 Hz rate. Self test is performed at power turn-on time. Verify
the error by turning the unit off for 10 seconds, disconnect the unit from any
other equipment and then turn the power back on. If the error persists it is
a true self test error. The self test error codes and their most likely problems
are listed in Table 5-1. 4863 Faults and solutions apply to the 2363 also
unless otherwise noted.
5.3.2 Operating Failures
Use the fault isolation information in Table 5-2 to narrow the problem down
to a specific area. The majority of installation faults can be fixed by
following the table and making the necessary corrections to the installation
wiring or the program. Failures after the unit has been running a while can
be isolated by first substituting a known good unit or output/input channel.
5
WARNING
If the fault isolation procedure re-
quires internal measurements, al-
ways remove power when disassem-
bling or assembling the unit. Use
extreme caution during trouble-
shooting, adjustments, or repair to
prevent shorting components and
causing further damage to the unit.
5-2