Hitachi 902 Service Manual page 202

Unit Name Function
Water level in Presence/absence of
incubation water
bath
Waste Detection of filled
solution level condition
Operation ON-OFF detection
SW
Sensor Condition upon Detection
ON - OFF OFF when absent
ON - OFF ON when full
ON when energized
8 - 8
(cont' d)
Inversion
Output Signal
on DI
Board
H Inverted

L
L Inverted