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.

HDC-9100 SERVICE MANUAL 11
2.4. Safety Precaution
This equipment has been developed and tested in conformity with domestic & international safety standards and
regulations, which guaranteesthe highstabilityof this product. This guarantees avery high degree of safetyfor this device.
The legislator expects us to inform the user expressively about the safety aspects in dealing with the device. The correct
handling of this equipment is imperative for its safe operation. Therefore, please read carefully all instructions before
switching on this device. For more detailed information, please contact our Customer Service Department or one of our
authorized representatives.
. 1. This device must be used with accessory kits which were offered by HUVITZ. If customer want to use accessory kit
from other manufacturer, that accessory kit’s safety must be guaranteed by HUVITZ or manufacturer of accessory
kit.
2. The equipment must be operated only by, or under direct supervision of properly trained and qualified person/s.
3. Modifications of this equipment may only be carried out by Huvitz’s service technicians or other authorized persons.
4. Customer maintenance of this equipment may only be performed as stated in the User Manual. Any additional
maintenance may only be performed by Huvitz’s service technicians or other authorized persons.
5. The manufacturer is only responsible for effects on safety, reliability, and performance of this equipment when the
following requirements are fulfilled: (1) The electrical installation in the respective room corresponds to the
specifications stated in this manual and (2) This equipment is used, operated and maintained according to this
manual.
6. Only persons who have undergone proper training and instructions are authorized to install, use, operate, and
maintain this equipment.
7. User Manual should be kept in the place where the persons in charge of operation and maintenance can access
easily any time.
8. Please do not pull on any cable. Always hold on to the plug when disconnecting cables.
9. Before every operation, proceed with visual inspection on the equipment exterior toseek any mechanical damage(s)
to ensure the proper functioning.
10. Do not obstruct any ventilation outlet for proper heat dissipation.
11. In case of any presence of smoke, spark or abnormal noise/smell from the machine, please power off immediately
and pull out the plug.
12. The device should neither be kept nor installed in the place with the risk of explosion or near the alcohol, benzene
and other inflammable substance.

12 HDC-9100 SERVICE MANUAL
13. The device should neither be kept nor installed in the place with high humidity. For the optimal operation, the
humidity should be at the range of 30%~90%.
14. The manufacturer is not liable for damage caused by unauthorized tampering with the device(s). Such tampering
will forfeit any rights to claim under warranty.
15. To avoid injury by tipping over, set the monitor to the following tilted position before moving.
Below 10° Below 10°
16. Beforeconnecting theAC power cordtotheDC adapter outlet makes surethevoltage designation of theDC adapter
corresponds to the local electrical supply.
17. Equipment grounding is vital for safe operation. Plug power cord into a properly earthed mains supply outlet whose
voltage and frequency characteristics are compatible with those listed on the monitor or in this manual. Do not uses
plug adapters or extension cords; such devices defeat the safety ground and could cause injury.
18. Grounding reliability is achieved only when the monitor is connected to a “hospital only” or “hospital grade”
receptacle. Inspect routinely and do not use if damage is discovered.
19. Do not touch signal input, signal output or other connectors, and the patient simultaneously.
20. Plug the female and of the AC Power Cord into the AC inlet of the DC Adapter.
Caution: Make sure the power cord is the correct type that is required in your area.
This LCD monitor has auniversal power supplythat allows operation in either 100-120V AC or 200-240VAC voltage
areas (no user adjustment is required).
Use the proper power cord with correct attachment plug type. If the power source is 120 V AC, use a power cord
which is a Hospital Grade Power Cord with NEMA 5-15 style plug, labeled for 125 volts AC with UL and C-UL
approvals. If the power source is a 240 V AC supply, use the tandem (T blade) type attachment plug with ground
conductor power cord that meets the respective European country’s safety regulation.
The hospital-grade plug for medical products intended for use in Denmark has DEMKO approval and is rated 13
amps at 250 Vac. Plug is recommended for use in medical applications and specification are being added to the
standard SB 107-2-D1. Plug mates with maker’s Danish hospital-grade socket. Hospital sockets have slightly

HDC-9100 SERVICE MANUAL 13
different shaped openings allowing only the hospital plug, not the standard Danish plug, to be inserted, to protect
the ac circuit in specific medical settings.
21. External equipment intended for connection to signal input, signal output or other connectors,
shall comply with relevant IEC Standard (e.g., IEC60950 for IT equipment and IEC60601-1 series for medical
electrical equipment). In addition, all such combination-system-shall comply with the standard IEC60601-1 and/or
IEC60601-1-1 harmonized national standard or the combination. If, in doubt, contact qualified technician or your
local representative the operator should not touch the patient and accessible male parts of the SIP/SOP connectors
simultaneously.

14 HDC-9100 SERVICE MANUAL
3. Configuration
3.1. Main Body
①LCD Panel
The LCD Panel displays chart, menu and other information on it.
②IR Receiver Window
A window for receiving the remote signal. (Please keep unobstructed or cannot receive the IR signal normally)
③LED
The LED indicates the operating status of the main body.
④Maddox LED
The LED for Maddox Rod Test.
①
②
③
④

HDC-9100 SERVICE MANUAL 15
⑤Power switch
It turns on and off the power of the main body.
⑥LCD screen brightness control switch
Use to adjust the brightness of the LCD screen.
⑦CAN Port
Connector for the communication with other product or computer
⑧USB port
When you execute the FM-100 Test, You can use the mouse.(refer User Manual 8.2.1. vision test)
And You can show movie and photo connecting the external storage(USB)
(refer User Manual 8.2.3. mode for movie/photo)
⑨Power input
Power supply unit for connecting the power adapter.
⑩Ventilation Slits
These slits ventilate the main body so that it keeps the appropriate temperature while the chart is running.
Do not cover or place anything on the ventilation slits. Overheat can cause a product malfunction
When you install this product as wall-hanging form, separate the Deco cover. It will help the product to cool.
Ne couvrez et ne placez rien sur les fentes de ventilation. Une surchauffe peut provoquer un dysfonctionnement du
produit Lorsque vous installez ce produit en tant que forme suspendue au mur, séparez le couvercle Deco.
Cela aidera le produit à refroidir.
!
WARNING
⑥
⑤
⑦
⑧
⑨
⑩

16 HDC-9100 SERVICE MANUAL
3.2. Remote Control
①Button Panel
Buttons provided on the remote executes charts, mask operation, menu, image gallery, contrast and etc.
②IR Transmitter Window
The transmitter inside the window emits infrared signals for the buttons.
③Battery compartment
On the back of the remote provides a room for batteries. Open the cover to install or replace batteries. The size and type
information about the battery is printed on the label attached on the back of the remote.
Deco Cover

HDC-9100 SERVICE MANUAL 17
④Buttons for Visual Acuity Test
These buttons executes visual acuity test.
Button
function
Landolt Ring charts (0.03~2.0)
Alphabet Letter charts (0.03~2.0)
Number charts (0.03~2.0)
Snellen E charts (0.03~2.0)
Figures for children (0.1~1.0)
④
⑤
⑥
⑦
⑧
⑨
⑩
⑪

18 HDC-9100 SERVICE MANUAL
⑤Buttons for Functional Chart
Charts for polarizing test are displayed differently on the display panel depending on the chart model.
Button
Function
Lens
Chart
Red/Green Filter
Red/Green Test,
Cross grid Test for distance
Polar, Cross
Cylinder
Astigmatism Test
Polar
Cross cylinder Test
Cross Cylinder
Maddox rod Test
Maddox rod
Binocular balance Test
Polar
Worth 4 dot Test,
Dominant eye Test
Red/Green
Phoria Test
Red/Green
Horizontal/Vertical phoria
Test
6BU prism, 10BI
prism
Minutes Stereo Test
Polar
Stereo Test
Polar

HDC-9100 SERVICE MANUAL 19
Stereo Test
Polar
Phoria and aniseikonia test
Polar
Phoria Test
Polar
⑥Buttons for Program
Button
Function
◀
Executes the previous step of executing program
▶
Executes the next step of executing program
P1
▪ Executes the first step of the program PGM 1
▪ Pressing the button 3 times in a row executes programming PGM1
P2
▪ Executes the first step of the program PGM 2
▪ Pressing the button 3 times in a row executes programming PGM2
⑦Button for Adjusting the Contrast Sensitivity
This button adjusts the contrast sensitivity of visual acuity charts. By the button press, the contrast is leveled down step by
step. The total number of adjustable contrast and the default level are set in the menu.
⑧Button for Menu Mode
This button executes the menu mode. Refer to the section 8.2 for detailed information.
⑨Buttons for Chart Mask Operation
Button
Function
▪ Isolates the letter in the 1st column of the 1st row.
▪ In the menu mode, selects menu item or execute it.
▪ Isolate the mid row.
▪ In the menu mode, cancels executed menu item or exits the menu mode.

20 HDC-9100 SERVICE MANUAL
▪ Moves the isolating position up 1 row or isolates the 1st row if there is no mask set previously.
▪ In the menu mode, changes the option value (+ key).
▪ Moves the isolating position down 1 row or isolates the last row if there is no mask set previously.
▪ In the menu mode, changes the option value (- key).
▪ Moves the isolating position leftward 1 column or isolates the 1st column if there is no mask set or
horizontal line is isolated previously.
▪ In the menu mode, changes the selection of option item (left tab key)
▪ Moves the isolating position rightward 1 column or isolates the last column if there is no mask set
or horizontal line is isolated previously.
▪ In the menu mode, changes the selection of option item (left tab key)
⑩Button for IR signal channel
Button
Function
▪ While holding down the button on the remote control, press the button to change
the channel.
⑪Button for Reverse Background
Button
Function
▪ Reverses background color black/white for Visual Acuity charts.