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4.6
CAUSE OF FAULTS AND CORRECTIVE ACTION
4.6.1
On-line Self-diagnosis
(1)
Most causes of faults in the equipment
are
those that
can
be detected
by simple
checks and those that
are reparable.
This
unit is provided
with the following functions for
easy
and
rapid
detection of causes.
tD
Four-digit alarm
code and
message
display
C
2
)
State
display (with
M,
S, T,
F, P, D
classification)
(§)
I/O
signal display
(2)
The above
displays are possible regardless
of whether
during
operation or
when
stopped.
Cause due to Alarm Code, and Corrective Actions
(1)
If
operation
stops
with "ALM" blinking in the lower right
corner
of the
screen,
depress |
COMN
| key and |
ALARM
| job function soft
key.
4.6.2
—
Both the alarm code and
message
will then be
displayed on
the
screen.
Although one
alarm code and
message
is
normally displayed, important
alarms will
be
displayed
if multiple alarms
occur
simultaneously.
I
(2)
List of alarm codes
A
list of alarm codes of high
order is shown in YASNAC i 80M
APPENDIX
(TOE-C843- 1 1 .31).
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657
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