Huvitz HNT-1 / 1P User manual

Service Manual
Non-Contact Tonometer HNT-1 / 1P

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M2ARAA-17-00004(Rev.B)
(2018.06.01)
© 2016 - 2017 Huvitz Co., Ltd.
38, Burim-ro 170beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14055, Republic of Korea
Huvitz has the copyright to this document.
Parts or all of this user manual cannot be duplicated without Huvitz’s permission in accordance
to the copyright law.

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Contents
1. Important Notice................................................................................................................... 3
2. Safety Information ................................................................................................................ 4
3. Product Outline................................................................................................................... 15
3-1. Main Parts.................................................................................................................15
3-2. Optical System.......................................................................................................... 18
3-3. Electrical System...................................................................................................... 21
3-4. Measurement Flow...................................................................................................26
4. Repair Standard .................................................................................................................29
4-1. Checking and Control............................................................................................... 29
4-2. Disassembly and Assembly Procedure.................................................................... 49
5. Troubleshooting.................................................................................................................. 58

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1. Important Notice
This product may malfunction due to electromagnetic waves caused by portable personal
telephones, transceivers, radio-controlled toys, etc. Be sure to avoid having objects such
as, which affect this product, brought near the product.
The information in this publication has been carefully checked and is believed to be entirely
accurate at the time of publication. Huvitz assumes no responsibility, however, for possible
errors or omissions, or for any consequences resulting from the use of the information
contained herein.
Huvitz reserves the right to make changes in its products or product specifications at any
time and without prior notice, and is not required to update this documentation to reflect
such changes.

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2. Safety Information
2.1. Introduction
Safety is everyone’s responsibility. The safe use of this equipment is largely dependent upon the installer,
user, operator, and maintainer. It is imperative that personnel study and become familiar with this entire
manual before attempting to install use, clean, service or adjust this equipment and any associated
accessories. It is paramount that the instructions contained in this manual are fully understood and
followed to enhance safety to the patient and the user/operator. It is for this reason that the following
safety notices have been placed appropriately within the text of this manual to highlight safety related
information or information requiring special emphasis. All users, operators, and maintainers must be
familiar with and pay particular attention to all Warnings and Cautions incorporated herein.
“Warning” indicates the presence of a hazard that could result in severe personal injury, death or
substantial property damage if ignored.
“Note” describes information for the installation, operation, or maintenance of which is important
but hazard related if ignored.
“Caution” indicates the presence of a hazard that could result in minor injury, or property damaged
if ignored.
!
WARNING
!
NOTE
!
CAUTION

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2.2. Symbol Explanation
2.2.1. Safety Symbol and Indication
The International Electrotechnical Commission (IEC) has established a set of symbols for medical
electronic equipment which classify a connection or warn of any potential hazards. The classifications
and symbols are shown below.
Symbol
Indication
This symbol identifies a safety note. Ensure you understand the function of
this control before using it. Control function is described in the appropriate
User’s or Service Manual.
(Ce symbole identifie une note de sécurité.Assurez-vous de comprendre la
fonction de ce contrôle avant de l'utiliser. La fonction de contrôle est décrite
dans le manuel d'utilisation ou d'entretien approprié.)
I and O on power switch represent ON and OFF respectively.
(O sur l'interrupteur d'alimentation représentent
respectivement ON et OFF.)
Temperature Limitation
(Limitation de température)
Atmospheric pressure limitation
(Limitation de pression atmosphérique)
Humidity limitation
(Limite d'humidité)
Stack direction
(Direction de la pile)
Keep DRY
(Garder au sec)
Fragile , handle with care
(Fragile, manipuler avec soin)
Keep away from sunlight
(Tenir àl'écart de la lumière du soleil)
Stack layer limit
(Limiter la couche de pile)

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CE Mark
(Marque CE)
Use no hook
(N'utilisez aucun crochet)
WEEE Symbol –EU only
Disposal of your old appliance
When this crossed-out wheeled bin symbol is attached to
a product it means the product is covered by the European
Directive 2002/96/EC.
All electrical and electronic products should be disposed of
separately from the municipal waste stream via designated
collection facilities appointed by the government or the local
authorities.
The correct disposal of your old appliance will help prevent
potential negative consequences for the environment and
human health. For more detailed information about disposal of
your old appliance, please contact your city office, waste
disposal service or the shop where you purchased the product.
(Symbole WEEE- EU seulement
Mise au rebut de votre ancien appareil
Lorsque ce symbole de poubelle barrée est joint àun produit,
cela signifie que le produit est couvert par la directive
européenne 2002/96 / CE.
Tous les produits électriques et électroniques doivent être
éliminés séparément du flux des déchets municipaux via des
installations de collecte désignées par le gouvernement oules
autorités locales. L'élimination correcte de votre ancient
appareil aidera àprévenir les conséquences negatives
potentielles sur l'environnement et la santéhumaine.
Pour plus d'informations sur l'élimination de votre ancient
appareil, veuillez contacter votre mairie, le service
d'élimination des déchets ou le magasin oùvous avez acheté
le produit.)
Authorized representative in the European Community –EU
ONLY
(Représentant autorisédans la Communautéeuropéenne-
EU seulement)
Manufacturer
(Fabricant)
Date of manufacture
(Il indique l'année de fabrication et le fabricant.)
COM Port
(Port COM)

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Input power & FUSE rating
(Puissance d'entrée et indice FUSE)
Consult instructions for use
(Consulter les instructions d'utilisation)
Type B Isolated patient connection
(Type B Connexion patient isolée.)
Warning: Crushing or insert of hand
(Attention: écrasement ou insertion de la main)
QR code
(QR code)
Alternating Current
(Courant alternative)

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2.2.2. Safety Symbol location
[Front View of HNT-1(P)]
[Bottom side of HNT-1(P)]
[Package Box]

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2.3. Environmental Considerations
Please avoid the environment below for the operation and storage of the equipment.
A place where the equipment can be exposed to water.
Do not operate the equipment with wet hand.
A place where the equipment can be exposed to direct sunlight.
A place where the equipment can be exposed to direct ultraviolet.
Where the temperature changes frequently (Normal temperature for
operation of the machine is at the range of 10C ~ 35C, and the
humidity is at the range of 30%~90%.
A place nearby a heating apparatus.
A place where the equipment can be exposed to water.
Do not operate the equipment with wet hand
A place where the equipment can be exposed to excessive pressure or
vibration.
A place where the equipment can be exposed to chemical substances
or flammable gas.
Watch out for dust, especially metal pieces from entering the
equipment.
Do not disassemble the product.
Huvitz will not be held responsible for any negligence regarding such
action.