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9
9.
Troubleshooting
The troubleshooting does not explain the causes of all the malfunctions which occur on the purity meter.
This simply helps to find the causes of malfunctions which may frequently occur.
If the purity meter shows a symptom which is not explained in this manual, or still has malfunctions even
though remedial actions are taken, please contact RIKEN KEIKI.
9-1. Troubles on the unit
Symptoms
Causes
Actions
The power cannot be
turned on.
The battery level is too low.
(When dry batteries are used)
Turn off the power and replace all the three dry
batteries with new ones in a non-hazardous
area.
The POWER switch was not
pressed long enough.
For power-on, keep the POWER switch
pressed until a beep is heard.
The AC adapter (option) is not
connected properly.
Check that the AC adapter is connected
properly.
Abnormal operations
Disturbances by sudden static
electricity noise, etc.
Turn off and restart the purity meter.
Key operations are
disabled.
Disturbances by sudden static
electricity noise, etc.
Turn off the power, and remove the battery unit
and install it again in a non-hazardous area
and then turn on the power to perform
operations.
Low battery voltage
caution is displayed.
(CAUTION)
LOW BATTEERY
The battery level is low.
Turn off the power and then replace the dry
batteries with new ones.
Low contrast caution
is displayed.
(CAUTION)
LOW CONTRAST
The contrast of interferometric
sensor has been decreased
due to contamination.
Replacement or repair of the interferometric
sensor is recommended. Request RIKEN
KEIKI for the replacement or repair.
Low UV intensity
caution
is displayed.
(CAUTION)
LOW BRIGHTNESS
The UV intensity of
interferometric sensor has
been dropped.
Replacement or repair of the interferometric
sensor is recommended. Request RIKEN
KEIKI for the replacement or repair.
Condensation occurred inside
the product (light source
sensor).
Draw dry air to dry the sensor.
Reference
calibration caution is
displayed.
(CAUTION)
CHECK
REF CAL
Zero drift may have occurred.
Perform reference calibration using fresh air.
Condensation occurred inside
the product (light source
sensor).
Draw dry air to dry the sensor.
