iL Series User Manual
California Instruments
Rev B
23
3.4 In Case of Trouble
3.4.1 Error Messages
AC source failure may be detected during power-on selftest or during operation. In
either case, the display may show an error message that indicates the reason for the
failure.
3.4.2 Selftest Errors
Pressing Shift and Error will show the error number. Selftest error messages appear
as:
ERROR <n>
Where "n" is a number listed in the following table. If this occurs, turn the power off
and then back on to see if the error persists. If the error message persists, the AC
source requires service.
3.4.3 Power-On Selftest Errors
Error No.
Failed Test
Error 1
Non-volatile RAM RD0 section checksum failed
Error 2
Non-volatile RAM CONFIG section checksum failed
Error 3
Non-volatile RAM CAL section checksum failed
Error 4
Non-volatile RAM WAVEFORM section checksum failed
Error 5
Non-volatile RAM STATE section checksum failed
Error 6
Non-volatile RAM LIST section checksum failed
Error 10
RAM selftest
Error 11 to 18
DAC selftest 1 to 8
Table 10 : Power on selftest Error codes
3.4.4 Runtime Error Messages
Under unusual operating conditions, the front panel display may show
OVLD
. This
indicates that the output voltage or current is beyond the range of the meter
readback circuit, but does not necessarily mean that there has been a failure within
the AC source. Chapter 11 lists other error messages that may appear at runtime.
3.4.5 Line Fuse
If the AC source appears "dead" with a blank display and the fan not running, first
check your voltage mains to be certain line voltage is being supplied to the AC
source. If the mains voltage is normal, the AC source line fuse may be defective. If
the AC source has a defective fuse, replace it only once. If it fails again, investigate
the reason for the failure. Proceed as follows:
1.
Turn off the front panel power switch and remove the input power (unplug the
power cord or open the safety disconnect).
2.
Remove the fuse cover from the rear panel.
3.
Unscrew the fuse caps and remove the fuses.
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