Hitachi 902 Service Manual page 15

Alarm
Alarm Category
Control
No.
1 to 8 STIRRER
21,22 RINSE
Sub-
Level
code
1 1 STOP
1 2 STOP
1 3 STOP
1 4 STOP
1 5 STOP
1 6 STOP
1 7 STOP
1 8 STOP
3 1 STOP
3 2 STOP
2 - 3
Description
In ascending action of the
stirrer, it does not reach the
upper dead point (on the
rinsing bath side).
(Alarm at the first upper
dead point after resetting will
be issued from other than
the cell side.)
In ascending action of the
stirrer, it does not reach the
upper dead point (on the cell
side).
In descending action of the
stirrer, it does not leave the
upper dead point.
When the stirrer moves
toward the rinsing bath, it
does not reach the rinsing
bath position.
The stirrer does not come to
the cell position.
At resetting, the stirrer does
not reach the rinsing bath
position (home position) in
its return movement to the
home position.
At resetting, the stirrer does
not leave the rinsing bath
position (home position) in
its departing movement
from the home position.
In rotation of the stirrer, it is
not set at the upper dead
point.
The rinsing mechanism does
not reach the upper dead
point in ascending motion.
The rinsing mechanism does
not leave the upper dead
point in descending motion.
Remedy
Check the upper dead
point detector.
Same as above
Same as above
Check the home
detector.
Check the detector on
the cell side.
Check the home
detector.
Same as above
Check the upper dead
point detector.
Check the upper dead
point detector.
Same as above