Ushio UIT-250, Руководство по эксплуатации

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4. Instructions for use6. T
roubleshooting
6. Troubleshooting
If it looks like there may be a failure, check the following items and perform the
measure(s) described.
No. Symptoms Check for Defective Cause
1 Display flickers. Dead batteries,
insufficient voltage
from batteries.
Replace the batteries with
new ones.
2 Even though unit is
exposed to UV rays,
the display remains at
0 and does not change. Is the exposure
amount meter on? Select the exposure
amount meter off and on.
3 The number of digits
on the display does not
change. Is the photodetector
separator properly
connected to the main
unit? If a gold plated pin on
either the photodetector
separator or main unit is
bent return it to its proper
shape using a standard
screwdriver without
breaking the pin.
If the unit has any of the following symptoms it needs to be repaired; therefore, con-
tact our company.
No. Symptoms Check for Defective Cause
1. Though UV light
exposure is not
performed, the monitor
display does not return
to 0. Check for an
abnormality with the
photodetector cord. Photodetector short
circuit.
2. Even though unit is
exposed to UV rays, the
display remains at 0 and
does not change. Check for an
abnormality with the
photodetector cord. Photodetector cord
break (disconnection).
3. Measurement value
(irradiance value)
suddenly went down.
Is there an
abnormality with the
appearance of the
photodetector? Deterioration of the
photodetector filter.
4. An abnormal sound
comes from within the
photodetector. Does the
photodetector make a
sound when lightly
shaken? Loosening of material
used to fix filter inside
the photodetector.
5. Abnormal sound from
the exposure amount
meter body. Does the exposure
amount meter body
make a sound when
lightly shaken? Loosing of fixing
screws for the circuit
board inside the
exposure amount meter.
6. Smoke coming from
exposure amount meter.
Are the batteries
positioned correctly? Insertion of batteries
with positive and
negative terminals
backwards.