Trouble-
shooting
26
GERMAN
13.0 Information on trouble-shooting
If you believe that your USN is not properly functioning, please take the time to
check or resolve possible defects before making a complaint about the device.
Symptoms
Possible causes
Trouble-shooting
Display indication
(LB/empty battery)
1. Power supply defect
1. Notify manufacturer or
dealer
2. Battery empty
2. Charge battery
Display indication
(LH/no contact fluid)
1. No contact fluid in
reservoir
1. Fill with 45 ml of contact
fluid (cover sensor)
2. Has been filled with
sterile or purified
water.
2. Add approx. 1
ml tap
water to the 45 ml of
contact fluid.
Display indication
(SA/saline detection)
1. Has been filled with
saline or
contaminated liquid
(e.g. tap water, salt,
mineral water)
1. Carefully rinse several
times with distilled
water. Carefully clean
the sensor in contact
fluid reservoir with
cotton buds or similar
implement, rinse again
with distilled water and
then refill the contact
fluid reservoir.
WATSON LABORATORIES, INC. , IPR2017-01621, Ex. 1006, p. 26 of 33
