Huvitz HDC-9100N User manual

HDC-9100 SERVICE MANUAL 1
SERVICE MANUAL
Digital Chart
HDC-9100N / HDC-9100PF

2HDC-9100 SERVICE MANUAL
IMPORTANT NOTICE
This product may malfunction due to electromagnetic waves caused by portable mobile phones, 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.
However, HUVITZ assumes no responsibility 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 document to reflect such changes.
9005ENG0018-A
Ver. 1.0
(2021.04)
Huvitz Co., Ltd.
38, Burim-ro 170beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14055
Republic of Korea
All rights are reserved.
Under copyright laws, this manual may not be copied, in whole or in part, without the prior written consent of Huvitz Co., Ltd

HDC-9100 SERVICE MANUAL 3
Contents
1. Introduction……………………………………………………….. 4
1.1. Outline of product
1.2. Classification
2. Safety Information……………………………………………….. 5
2.1. Introduction
2.2. Safety Symbols
2.3. Environmental Factors
2.4. Safety Precaution
3. Configuration……………………………………………………. 14
3.1. Main Body
3.2. Remote Control
3.3. Exploded diagram
3.4. System functional block diagram
3.5. Electrical construction diagram
4. Method of software upgrade………………………………… 29
4.1. How to upgrade digital chart S/W……………………..…29

4HDC-9100 SERVICE MANUAL
1. Introduction
1.1. Outline of product
The Huvitz Digital Chart (HDC-9100) is a computerized chart presenting device that provides charts for refractive correction
test and various functional tests such as cross cylinder, red/green, binocular balance, fusion and suppression, heterophoria,
associated phoria, aniseikonia, stereopsis, and dominant eye test for heterophoria. Since the Digital Chart implements
charts on the LCD panel by exploiting the cutting edge digital technology, it’s not only faster and quieter but also equipped
with multifarious convenience functions. The contrast sensitivity and the background luminance of the chart are adjustable
for environmental needs. The chart can be installed in a wide range from 1.5 to 6 meter. The distance between optotypes
can be set to variable distance and even the selection of optotype can be randomized. Also the image gallery contains a
dozen of image clips that the examiner could utilize during the examination. Various masking and random functions would
be helpful for a punctual vision test.
The examiner may execute all the charts and functions by using the remote and the buttons on the main body of the digital
chart. If the chart is connected to the Huvitz Digital Refractor, the examiner would just use the Operation Panel of the Digital
Refractor for chart operation as it allows to control the lens unit and the chart device at the same time by a touch of buttons
on it.
1.2. Classification
Product Name
Digital Eye Chart (Huvitz Digital Chart HDC-9100PF, HDC-9100N)
Weight , Packing Unit
Weight: 6.1 kg, Packing: EA
Objective: Device for optometry, which can display letters or symbols, and can save and load videos for medical
purpose.
Manufacturer and dealer
Huvitz Co., Ltd.
38, Burim-ro 170beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do, 14055 Republic of Korea
Classification
Classification of Equipment
Parameter Value
According to protection against electric shock.
Class I [Grounded]. This includes the AC/DC
adapter(XP power, AHM85PS12)
According to the degree of safety in the
presence of Flammable Anesthetics mixture
with air, with oxygen, or with nitrous oxide.
Equipment is NOT suitable for use in the presence
of flammable anesthetics mixture with oxygen or
with nitrous oxide
According to the mode of operation.
Continuous Operation.

HDC-9100 SERVICE MANUAL 5
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 personnelstudy 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 here in.
“Warning“ indicates the presence of a hazard that could result in severe personal injury, death or
substantial property damage if ignored.
NOTE
“Note” describes information for the installation, operation, or maintenance of which is important but
hazard related if ignored.
“Caution” indicates the presence for a hazard that could result in minor injury, or property damaged if
ignored.
!
WARNING
!
CAUTION

6HDC-9100 SERVICE MANUAL
2.2. Safety Symbols
The International Electro-technical Commission (IEC) has established a set of symbols for medical electronic equipment,
which classify a connection or warn of any potential hazards.
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.)
This symbol identifies the standby;power switch and indicates its operational status
(Ce symbole identifie le commutateur de secours et indique son état de
fonctionnement)
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)
Handle with care
(Manipuler avec soin)
Keep away from sunlight
(Tenir à l'écart de la lumière du soleil)
Stack layer limit
(Limiter la couche de pile)

HDC-9100 SERVICE MANUAL 7
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 à un 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 à prévenir les conséquences negatives
potentielles sur l'environnement et la santé humaine.
Pour plus d'informations sur l'élimination de votre ancient
appareil, veuillez contacter votre mairie, le service
d'élimination des déchets ou le magasin où vous avez acheté
le produit.)
Authorized representative in the European Community – EU
ONLY
(Représentant autorisé dans la Communauté européenne-
EU seulement)
Manufacturer
(Fabricant)
Date of manufacture
(Il indique l'année de fabrication et le fabricant.)

8HDC-9100 SERVICE MANUAL
Refer to instruction manual/booklet
(Se reporter au manuel d’instructions / brochure)
QR code
(QR code)
Direct Current
(Courant direct)
The United States and Canada have mutual-recognition agreements.
Therefore, if certified using a Canadian specification (CSA) for UL, the
certification mark for the product will be a C-UL certification mark which
means CSA specification compliance as follows.
(Les États-Unis et le Canada ont conclu des accords de libre-échange. Par
conséquent, si l'on obtient une certification au moyen d'une spécification
canadienne (CSA) pour l'AMT, la marque de certification pour le produit sera
une marque de certification C-UL, ce qui signifie la conformité de la
spécification CSA comme suit.)
Medical Device
(dispositif medical)
Wi-Fi sticker
(Wi-Fi autocollant)

HDC-9100 SERVICE MANUAL 9
2.3. Environmental Factors
Avoid the following environments for operation or storage:
Where the instrument is exposed to water vapor.
Don’t operate the instrument with wet hands Indoor use only.
Where the instrument is exposed to direct sunlight.
A place where the equipment can be exposed to direct ultraviolet.
Where there are big changes in temperature.
Optimal temperature range for normal operation is from 10C to 40C (Humidity : 30 ~ 90%).
Where there is hot equipment nearby.
Where the humidity is extremely high or there is a ventilation problem.
Where the instrument is exposed to excessive shocks or vibrations.
Where the instrument is exposed to chemical material or explosive gas.
Be cautious so that things like dust and metal do not fall inside the instrument.

10 HDC-9100 SERVICE MANUAL
Don’t disassemble or open the product. HUVITZ does not take responsibility for the possible
problems
Be careful not to block the fan of the instrument.
Don’t plug the AC power cable into the outlet unless all parts of the instrument are
completely connected. Otherwise, it will cause severe damage on the instrument.
Pull out the power cable with holding the plug, not the cord.
To avoid risk of electric shock, this equipment must only be connected to a supply mains
with protective earth.
This instrument can withstand the following conditions:
1. Operation
- An ambient temperature range of 10℃~ 40℃(50°F ~ 104°F)
- A relative humidity range of 30% ~ 90% (with non-condensing)
- An atmospheric pressure range of 800 ~ 1060hpa
2. Transportation
- An ambient temperature range of -40℃~ 70℃(-40F ~ 158°F)
- A relative humidity range of 10% ~ 95%
- An atmosphere pressure range of 500 ~ 1060hpa
3. Storage
- An ambient temperature range of -10℃~ 55℃(14°F ~ 131°F)
- A relative humidity range of 10% ~ 95% (with non-condensing)
- An atmosphere pressure range of 700 ~ 1060hpa
Avoid environments where the equipment is exposed to excessive shocks or vibrations.