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TROUBLESHOOTING & REPAIR
F-20 F-20
COMMANDER 400 WITH G2713-1 CONTROL BOARD
ERROR CODES DURING
INITIALIZATION SEQUENCE
DEFINITION / SYMPTOM CORRECTIVE ACTION
Ert
Esi
EIO
ECP
ECE
EO5
IC3
SS?
RTI error (illegal return from
interrupt).
SWI error (illegal software
interrupt request).
IOT error (illegal op code trap).
COP time-out error.
CME error (slow or stopped
processor clock).
OC5 unintended execution.
IC3 unintended execution.
Invalid range control switch
position.
If a High Frequency unit is being
used, make sure it is connected
properly. There may be high fre-
quency intrusion from another
source in the immediate area.
Remove all possible forms of RF
intrusion.
If the problem persists, the
control board may be faulty.
Check for proper selector
switch/handle alignment.
Check the selector switch and
associated wiring. See the Wiring
Diagram. If the problem persists,
the control board may be faulty.
COMMANDER 400