Alarm List
Alarm Number (0000 to 0999)
Alarm List-206
EAXA21 board failure (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the following board. Save the 
CMOS.BIN before replace the board to be safe.
∙ EAXA21 board
YCP21 board failure (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the YCP21 board. Save the 
CMOS.BIN before replace the board to be safe.  Replace the YCP21 
board, and then remove the CF from the failure YCP21 board to insert 
it into the new YCP21 board.
YIF01 board failure (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the YIF01 board. Save the 
CMOS.BIN before replace the board to be safe. Replace the YIF01 
board, and then load the CMOS.BIN saved before alarm occurred.
other If the alarm occurs again, save the CMOS.BIN in maintenance mode, 
and then contact your Yaskawa representative about occurrence 
status (operating procedure).
0990 SYSTEM ERROR 
(YCP21)
1 YCP21board detect the 
Controller power off signal 
(Power lost signal) of YIF01 
board when the control power 
turned ON. This alarm may 
occur, when the control power 
turned OFF before an online 
screen is displayed by a 
programming pendant,
Execute condition failure Turn the power OFF after the online window appears on the 
programming pendant.
YCP21 board failure (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the YCP21 board. Save the 
CMOS.BIN before replace the board to be safe.  Replace the YCP21 
board, and then remove the CF from the failure YCP21 board to insert 
it into the new YCP21 board.
YIF01 board failure (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the YIF01 board. Save the 
CMOS.BIN before replace the board to be safe. Replace the YIF01 
board, and then load the CMOS.BIN saved before alarm occurred.
Alarm
Number
Alarm Name
Sub
Code
Meaning Cause Remedy