Hitachi 902 - Page 21

2 - 9
Alarm
Control
No.
Alarm Category
Sub-
code
Level Description Remedy
1231 CELL
BLANK
45 1 S.STOP
(Restart
un-
allowable)
In passed cell blank
measurement, any one of
ADC1, ADC2, λx and λy
differs from the reference
value (Note 5) by more than
0.1 Abs through 10
consecutive cycles.
(Counting is not made in
use for stopped cell blank
test.)
(1)Carry out cell
washing.
(2)Replace the cell.
1241 to
1400
PASS CELL
BLANK
46 1 to 48WARNING In 4 passed cell blank
measurements, any one of
ADC1, ADC2, λx and λy
differs from the reference
value (Note 5) by more than
0.1 Abs twice or more.
(In case any one of those
values differs only once, the
average value of normal
data is treated as a value of
passed cell blank.)
Same as above
1441 to
1444
ADC1? 47 1 WARNING Any one of I/O error,
boundary error of parameter
block pointer, I/O device
busy, channel error and I/O
device error (PC board not
mounted, device
inoperable, time-out) has
occurred.
Replace ECPU230 or
EMIO100 PC board.
47 2 WARNING •A/D count value remains
at 0.
•After A/D conversion,
interruption is impossible.
•The command or
parameter given to A/D
PC board is abnormal.
•A/D conversion cannot be
completed.
(Time-out occurs.)
(Reference voltage is
checked.)
(1)Replace Log Amp
PC board.
(2)Check 2 V and
6 V reference
voltages.
47 3 WARNING The number of A/D starts
cannot be reset to 0.
(This is checked at reaction
measurement.)
Same as above
(cont’d)