Vacuum Error (55)
(1) Purpose
To monitor abnormal vacuum
(2) Detection Method
The output voltage of the 400 mmHg vacuum sensor is monitored through A/D convertor.
Error is checked if the sensor output voltage exceeds the specified range (360 mmHg or
less) for at least 12 seconds.
(3) CA-1500s Action
Stops the reagent dispensing. Discard the reaction tubes in the heater unit and the detector
well (after analysis).
(4) Cause
1) Leakage from the vacuum path
2) Malfunction of the pneumatic unit
3) Defective PCB No. 2136
4) Defective PCB No. 4079 (Pneumatic unit is not turned ON)
(5) Corrective Action
1) Check the pressure path.
2) Check the pneumatic unit.
3) Check the PCB function.