4.3.2 INITIALDIAGNOSTICERRORDISPLAYATPOWERON
Trouble !
Check Procedure
I
Solution
Error identified by
initial diagnostics at
power ON.
Both diagnostic items passed and
diagnostic item lead up to error are
displayed and NCunit stops.
Record the diagnostic item
lead up to NCunit stop,
turn on power again and
contact your YASKAWArep-
resentative of its results.
4.3.3 “CPUERROR”DISPLAY(Without Alarm Codes)
Trouble
I
Check Procedure
I
Solution
“CPUERROR”only is
displayed on CRT
screen.
CPUcannot function normally and this is
major failure. The main system shuts
off th6 servo power, but, depress the
emergency stop and power OFFbuttons to
make check for proper AC input voltage
and ensure power is OFF.
Removeany noise source
near the NCunit.
Turn on the main power
under emergency stop
condition.
Contact our
YASKAWArepresentative
immediately if it is “CPU
ERROR”.
If normal, start operation
after ensuring correct
parameters, settings, off-
sets and programs.
–29-
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