ICS ELECTRONICS 4809A, Instruction Manual

Page: 94 / 131

5-5
5
TABLE 5-2 TROUBLESHOOTING GUIDE
Possible
Symptom Fault Action or Check
Unit will not turn on Power cord not Push power cord into DC
plugged in receptacle
Power at AC outlet Check outlet and power
adapter
High output lines Disconnect output signals and
shorted to ground reapply power to test the unit.
If it powers on, remove the
short or put resistors in the
offending circuit path.
Unit shows a blinking Self test fault Check Self Test errors in
LED at power turn on Table 5-1
ERR LED on at Flash data lost Use *CLS to clear the LED.
power turn-on Use CAL:DATE command to
enter new date so ERR LED
will not come on at next
power-on time.
Recall the factory defaults
with the CAL:DEFAULT
command. Use *SAV 0 to
save the factory configura
tion.
Reload your configuration and
use the *SAV 0 command
to save your new
configuration.
Unit fails to respond No delay after an Provide a 70 ms minimum
or responds wrong the address change delay after changing the
after an address change GPIB address.