INST.No.INE-475-P1CE Software Version 1.00
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9.3 Measures against troubles not included with self-diagnosis
If a trouble occurred, take remedial measures referring to the corresponding items of this manual
after checking the following points. For the troubles of the operator interface/display unit, refer to
the separate manual of the operator interface/display unit.
9.3.1 No display on this detector unit appears.
(1) Is the power normal?
(2) Is the fuse normal?
(3) Are cables connected securely?
(4) Is the connector connecting the data display cover and the internal CPU board connected
securely?
(5) Turn off the power once and then turn on it.
(6) If the trouble cannot be repaired by the above checks, the power unit in this detector unit may
be defective.
9.3.2 Measured value remains unchanged.
(1) Is HOLD set to OFF?
(2) Is PRESET set to OFF?
(3) Are the calibration curve data correct?
(4) Turn off the power once and then turn on it.
(5) Does the data display with the calibration curve number 0 by using the output checker plate
change?
(6) When the data remains unchanged, initialize the RAM. If this phenomenon is not still recovered,
return this detector unit to CHINO.
9.3.3 Measured value fluctuates.
(1) Is the measuring surface flat?
(2) Is the measuring position correct? Make sure that the detector unit does not measure such
bottom face as a conveyor belt, etc.
(3) Make sure that any disturbance light is not irradiated onto the measuring surface.
(4) Is the smoothing time proper? Certain smoothing time is necessary in stable measurements.
(5) Make sure that any noise source does not exist around this detector unit or connection cables.
(6) Does the data display with the calibration curve number 0 by using the output checker plate
fluctuate?
(7) When the data fluctuates, initialize the RAM. If this phenomenon is not still recovered, return
this detector unit to CHINO.
9.3.4 Measured value is slightly higher or lower than the actual value.
(1) Is the calibration curve number correct?
(2) Are the calibration curve data correct?
(3) Are HOLD and PRESET set to ON?
(4) Is the measuring position correct?
(5) Is the cover glass surface of this detector unit clean?
(6) Correct the calibration curve. (Refer to [6.3.3 Correcting calibration curves].)
9. Inspection and maintenance