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8-466
YSU unit failure
(1)Reset the alarm.
(2)If the alarm occurs again after confirming the confirming the rotary switch,
replace the YSU unit. Save the CMOS.BIN before replacing the YSU unit to
be safe.
51
CPU2 detected no change of the
feedback signal within a certain
time period in enable switch signal
between YSU units.
Connection failure
(1)Reset the alarm.
(2)If the alarm occurs again, check the followings.
·Connector connection confirmation of YSU unit (CN205/CN206)
Rotary switch setting
error
(1)Reset the alarm.
(2)If the alarm occurs again after confirming the connection, execute the
following contents.
·Set rotary switch (S1) settings of the master control YSU unit to "1"; set
rotary switch (S1) settings of slave control YSU unit to "2".
YSU unit failure
(1)Reset the alarm.
(2)If the alarm occurs again after confirming the confirming the rotary switch,
replace the YSU unit. Save the CMOS.BIN before replacing the YSU unit to
be safe.
53
CPU2 detected no change of the
feedback signal within a certain
time period in speed mode zero
signal between YSU units.
Connection failure
(1)Reset the alarm.
(2)If the alarm occurs again, check the followings.
·Connector connection confirmation of YSU unit (CN205/CN206)
Rotary switch setting
error
(1)Reset the alarm.
(2)If the alarm occurs again after confirming the connection, execute the
following contents.
·Set rotary switch (S1) settings of the master control YSU unit to "1"; set
rotary switch (S1) settings of slave control YSU unit to "2".
YSU unit failure
(1)Reset the alarm.
(2)If the alarm occurs again after confirming the confirming the rotary switch,
replace the YSU unit. Save the CMOS.BIN before replacing the YSU unit to
be safe.
Alarm
Number
Alarm Name
Sub
Code
Meaning
Cause
Remedy