YASKAWA DX200 Maintenance Manual page 1146

Alarm Name
Alarm Sub
Number
Code
4928 M-SAF OUTPUT SIG.
SELF CHECK ERR
4929 M-SAF INPUT SIG.
SELF CHECK ERR
Meaning Cause
Other
Subcode is the output signal Connection failure
number that detected error.
YSF21 board failure
YSF22 board failure
Other
Subcode is the input signal Connection failure
number that detected error.
YSF21 board failure
YSF22 board failure
Remedy
If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
(1)Reset the alarm.
(2)If the alarm occurs again, check the connection and inserting state
of the following cables and connectors.
∙
YSF22
∙
Cable continuity between YSF21 board and YSF22 board.
(1)Reset the alarm.
(2)If the alarm occurs again, replace the YSF21 board.
(1)Reset the alarm.
(2)If the alarm occurs again, replace the YSF22 board.
In a system where a plurality of YSF22 boards are connected, replace
the board on which the alarm occurred.
If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
(1)Reset the alarm.
(2)If the alarm occurs again, check the connection and inserting state
of the following cables and connectors.
∙
YSF22
∙
Cable continuity between YSF21 board and YSF22 board.
(1)Reset the alarm.
(2)If the alarm occurs again, replace the YSF21 board.
(1)Reset the alarm.
(2)If the alarm occurs again, replace the YSF22 board.
In a system where a plurality of YSF22 boards are connected, replace
the board on which the alarm occurred.