Topcon ACP-8 User manual

INSTRUCTION MANUAL
AUTO CHART PROJECTOR
ACP-8

1
INTRODUCTION
Thank you for purchasing the TOPCON ACP-8 Auto Chart
Projector.
(To get the best use this instrument, please carefully read
these instructions and keep this Instruction Manual in a con-
venient location for future reference.)
This text outlines the ACP-8 Auto Chart Projector and describes basic
operations, troubleshooting, checking, maintenance and cleaning.
To encourage the safe, efficient use of this instrument and to prevent
danger to the operator and others, we suggest you carefully read the
"Displays for Safe Use" and the "Safety Cautions".
Again, please keep this Instruction Manual in a convenient location for
future reference.
Precautions
• This machine is a precision instrument; install it in a place that is set
to the following conditions: temperature (10~40°C), humidity
(30~85%) and atmospheric pressure (70~106KPa). Avoid direct
exposure to sunlight.
• To ensure smooth operation, install the instrument on a level surface
free of vibrations. Also, do not place any objects on the instrument.
• Before using the instrument, connect all cables properly.
• Use the specified source voltage. (±10% 50/60Hz ±1kHz)
• When not in use, turn the power off and dust cover on the instrument.
• To ensure a correct reading, do not soil the measuring window with
finger prints, dust, etc. Also, do not touch the measuring nozzle
except when cleaning.

2
DISPLAY FOR SAFE USE
In order to encourage the safe use of this product and prevent any danger to the operator and
others or damage to properties, important warnings are placed on the product and inserted in
the instruction manual.
We suggest that everyone understand the meaning of the following displays and icons before
reading the "Safety Cautions" and text.
WARNING
DISPLAY MEANING
WARNING Ignoring or disregarding this display may lead to death
or serious injury.
CAUTION Ignoring or disregarding this display may
lead to personal injury or physical damage.
• Injury refers to cuts, bruises, sprains, fractures, burn, electric shock, etc.
• Physical damage refers to extensive damage to buildings or equipment and
furniture.
ICONS
ICONS MEANING
This indicates Prohibition.
Specific content is expressed with words or an icon
either inserted in the icon itself or located next to the
icon.
This indicates Mandatory Action.
Specific content is expressed with words or an icon
either inserted in the icon itself or located next to the
icon.
This icon indicates Hazard Alerting (Warning).
Prohibition.
Specific content is expressed with words or an icon
either inserted in the icon itself or located next to the
icon.

3
SAFETY CAUTIONS
WARNING
Icons Prevention item Page
Do not break down, modify or repair the equipment.
Doing so can cause electric shock. Request a repair from
your dealer. 20
To prevent an electric shock hazard, do not allow water or
other foreign matter to enter into the instrument. --
To avoid fire and electric shock in the case of tumbling, do
not place a cup or vessel containing water/fluid on the
instrument. --
To avoid electric shock, do not insert objects or metals
through the vent holes or gaps or place them inside the
machine body. --
Connect the power plug to a three-prong properly grounded
AC socket with an earth. If it is connected to a socket that is
not grounded, it can cause a fire and electric shock due to
leakage. 11
Unplug the power cable before removing the fuse cover to
replace the fuse. Removing the fuse cover with the power
cable plugged in can cause electric shock. Do not install the
power cord on the body with the fuse cover removed. 25
Use only attached fuses (For 100, 120V range: T-1.6A, 250V
For 220, 230, 240V range: T-1A, 250V). Using other fuses may
cause a fire in the event that the instrument fails. 25
Should any anomaly, such as smoke, occur, immediately
switch OFF the power source and unplug the power cable.
Continued use while ignoring the condition may cause a
fire. Contact your dealer for repair. --

4
CAUTION
Icons Prevention item Page
Do not tilt the device or place it in an unstable place. Other-
wise, the device may topple over, drop or cause injury. 11
Handling the power plug with wet hands can cause electric
shock. 11
To avoid electric shock, unplug the power cable when
replacing the projection lamp. 23
Do not replace the projection lamp immediately after turning
off the light. Otherwise, you might get burnt by the hot tem-
perature of the lamp. 23
When this instrument is not used for a long time, remove
the batteries from the remote controller. 11
This instrument has been tested (with 120V/230V) and
found to comply with IEC60601-1-2: 1993.
This instrument radiates radio frequency energy within stan-
dard and may affect other devices in vicinity.
If you have found out by turning on/off the instrument that it
affects other devices, it is recommended to change the
direction, keep a proper distance against other devices or
change the outlet.
If you have a question, consult with the selling agent.
--

5
USAGE AND MAINTENANCE
FUNCTION AND INTENDED APPLICATION
This product is designed to project the eye test chart for visual acuity examination to the
screen. In order to control the eye test chart, controller is available.
USER MAINTENANCE
To maintain the safety and performance of the equipment, never attempt to do mainte-
nance on your own. Ask our service personnel for repairs except for the items specified
here which can be maintained by the user. For details, follow the instructions.
FUSE REPLACEMENT
The primary fuses for the main body may be replaced by a non-trained service technician.
For details, refer to "Replacing the Fuse" on page 25.
LAMP REPLACEMENT
The projection lamp can be replaced. Refer to the instructions in "Replacing the Projection
Lamp" on page 23 for details.
ESCAPE CLAUSE
PURPOSE
This Auto Chart Projector "ACP-8" is a precision electrical device for medical use that
must be used under the instruction of a doctor.
• TOPCON shall not take any responsibility for damage due to fire, earthquakes, actions
by a third party or other accidents, or the negligence and misuse of the user and use
under unusual conditions.
• TOPCON shall not take any responsibility for damage derived from the inability to use
this equipment, such as a loss of business profit and suspension of business.
• TOPCON shall not take any responsibility for damage caused by operations other than
those described in this Instruction Manual.
• Diagnoses shall be made on the responsibility of pertaining doctors and TOPCON shall
not take any responsibility for the results of such diagnoses.

6
WARNING INDICATIONS AND POSITIONS
To ensure the safe usage of this equipment, precaution indications are provided.
Abide by the following warning instructions. If any of the following labels are missing,
please contact us at the address printed on the back cover of this manual.
Inner of lamp cover
See P.25

7
CONTENT
INTRODUCTION ..................................................................................... 1
DISPLAY FOR SAFE USE ...................................................................... 2
SAFETY CAUTIONS ............................................................................... 3
USAGE AND MAINTENANCE ................................................................ 5
ESCAPE CLAUSE ................................................................................... 5
WARNING INDICATIONS AND POSITIONS .......................................... 6
Names of parts
Names of parts on the main body ............................................................ 8
Remote controller .................................................................................... 9
Standard accessories ............................................................................ 10
Operation procedures
Preparations .......................................................................................... 11
Usage guide
Operating the random access controller ................................................ 15
Using the program functions .................................................................. 16
Using charts for measuring binocular visual functions ........................... 18
Troubleshooting
Operating procedures for troubleshooting ............................................. 20
Chart
............................................................................................................... 21
Care and check
Daily Maintenance ................................................................................. 23
Changing the channel setting of the remote controller .......................... 26
Maintenance .......................................................................................... 28
Reference
Optional Accessories ............................................................................. 29
Specifications ......................................................................................... 29

8
Names of parts
Names of parts
Names of parts on the main body Top cover
Sensor
Lamp cover Front panel
Barrel screw
Base
Power switch
RS232C connector
Power socket
Fuse holder
Voltage selector
Power plug
(only MC type)
(Some types do not have i
t
in the standard kit.)

9
Names of parts
Remote controller
1 Light emitter
2 Chart switch
3Lightswitch
4Resetswitch(*)
5 Forward switch (*)
6 Back switch (*)
7 Mask selector
8 Mask transfer switch
9R&Gswitch
10 Program switch
* These switches are used
when activating the 'pro-
gram' mode.
E type EM type
(Example : A type chart)

10
Names of parts
Standard accessories
The following are the standard accessories. Please check if they are all included.( ) refers
to the number of items.
Power cord (1) Calibration card (1)
Silicone cloth (1) Attachment screws (2)
Not included in the types without base.
Dust cover (1) Spare fuse (2)
Spare lamp (1) Dry battery (UM-3) (2)
Hexagonal wrench for focus adjustment (2) Screen (1)
Instruction manual (1)

11
Operation procedures
Operation procedures
Preparations
1Place the instrument at the same level as the person to be measured.
When installing by using the base, insert the shaft of the instrument into the base as
illustrated. (This method is same when using the stand or wall mount.)
2Turn the power switch 'off'.
3When more than two instruments are installed in close proximity to each other, it is
necessary to set the channel by the DIP switches of the body and the signal channel
switches of the remote controller in order to avoid interference.(Up to four instru-
ments may be installed at the same location)
* At the time of shipment, the instrument is set at channel 1.
* To change the channel, see "Changing the channel setting of the remote controller"
on page 26.
Caution Do not tilt the device or place it in an unstable place. Otherwise,
the device may topple over, drop or cause injury.
Warning Connect the power plug to a three-prong properly grounded AC
socket with an earth. If it is connected to a socket that is not
grounded, it can cause a fire and electric shock due to leakage.
Caution Handling the power plug with wet hands can cause electric shock.
Caution When this instrument is not used for a long time, remove the bat-
teries from the remote controller.
Base (Some types do not have
it in the standard kit.)

12
Operation procedures
4Insert the connector of the power cord into the power socket on the body and insert
the power supply plug into the outlet.
5Turn the power switch 'on'.
6Remove the battery cover from the back of the remote controller.
7Insert the dry batteries into the remote controller as illustrated and replace the bat-
tery cover.
8Adjust the position of the body so that the projected light is centered on the screen.
(How to insert batteries)

13
Operation procedures
For E, EM, MC type
9Loosen the barrel screw
about a half of a turn with
the attached hexagonal
wrench.
Move the knob in the arrow
direction so that the projec-
tion on the screen is sharp
and clear. For proper cali-
bration, the projection of the
chart which has 0.1 (or 20/
200) visual acuity should
contact the inner side of one
of the scales on the calibra-
tion card which correspon-
dis to the desired refracting distance.
10 If the size does not match the respective refracting distance scale, move the instru-
ment either toward or away item the screen and then repeat items 9 above.
11 Fix the barrel screw to complete preparation.
Barrel screw Knob

14
Operation procedures
For R type (variable focus lens type)
12 Loosen the first lens-barrel screw and the second lens-barrel screw about a half of a
turn.
Move the lens-barrel screw
in the arrow direction with
the hexagonal wrench
inserted.
The first lens-barrel screw:
size
The second lens-barrel
screw: focus
Move the first lens-barrel
screw to roughly fit the size
and move the second lens-
barrel screw to achieve the
focus.
13 Move the first and second lens-barrel screw for-
ward and/or backward to focus 20/200 (or 0.1)
visual acuity "E" on to the projection screen.
Place the calibration card on the projection
screen. The "E" of the 20/200 slide should fill and
just touch the inner sides of the scale which corre-
sponds to the desired refracting distance.
* The variable focus lenses permits the R type to be positioned at the following projec-
tion distances relative to refracing distance:
For example:
At a refracting distance of 5 meters, the R type Auto Chart Projector can be posi-
tioned at a distance of 4.70 to 5.90 meters. Within this range, the variable focus
objective lenses can project the properly calibrated image.
14 Fix the barrel screw to complete preparation.
Refracting Distance Projection Distance
3m 2.90 to 3.70m
4m 3.80 to 4.80m
5m 4.70 to 5.90m
6.1m 5.70 to 7.10m

15
Usage guide
Usage guide
Operating the random access controller
1Turn the power switch on. The chart will be reset
to the start position and the lamp will light up.
2Direct the light emitter on the remote controller to
the sensor on the projector body or use a wall
with high reflectivity to receive the reflected light
on the light emitter and press each switch before
using.
• Switch functions
(1) Chart switch. . . . . . . . . . . .Projects the chart as
indicated on the switch.
(2) Light switch . . . . . . . . . . . .Turns the lamp on/off.
(3) Reset switch. . . . . . . . . . . .Returns to the step 1
chart in the program.
(4) Forward switch. . . . . . . . . .Automatically advances
the step in the program.
(5) Back switch . . . . . . . . . . . .Automatically backs the
step in the program.
(6) Mask selector. . . . . . . . . . .Allows selection of a
mask that is appropriate for the chart. (horizontal
mask, vertical mask, one character mask).
(7) Mask transfer switch . . . . .Moves the mask in the
direction as indicated on the switch. When the mask
moves to the maximum (minimum) indication of a
chart being projected, the next (previous) chart in
the sequence will automatically appear. Charts can be switched within the same type
of charts.
(8) R&G filter switch . . . . . . . .R&G filter can be applied only for the chart that allows
R&G filtering.
(9) Switch the program P1 with the program P2.
* See P.16 for using the program function.
* When the lamp is turned off, the lamp will light up by pressing either the (1) or (3)-(9)
switches.
* When the mask is not open, it will automatically be open by pressing the (1) chart
switch.
* When the instrument is not used for 10 minutes, it will be automatically turned off
(Auto shut-off mechanism)
(1)
(2)
(3)
(7)
(5)
(4)
(6)
(8) (9)
Example: A type chart

16
Usage guide
Using the program functions
1How to program the measuring procedure
(1) To start programming
Turn the power switch on while pressing the reset switch. Release the reset switch
when the buzzer sounds once. The chart will return to the start position, the lamp lights
up and the buzzer sounds twice. Select either program 1 or 2 by pressing P1 or P2.
(Buzzer once: P1 initial value, buzzer twice: P2). Press the “^” switch. The buzzer
sounds three times.
(2) Programming the charts
Press the chart switch or the mask switch according to the measuring procedure to
project and press the “^” switch. The buzzer sounds four times and this completes one
step.
* Repeat this to program the procedure. Programming is available for up to 30 steps.
(3) Completing the programming
Press the reset switch. This completes the programming.
* Programming 30 steps will automatically complete the function without pressing the
reset switch.
* Turning the power switch off won’t erase the program.
* Follow the steps above to start a new program. The former program will be erased
to start a new program.

17
Usage guide
2Carrying out program-base examinations (Example : A type chart)
• Turn the power switch on.
• The chart at the start position will be projected.
• Step 1 chart will be called up.
• Step 1 chart will be projected.
• You can reset to the beginning (step 1) of the program-
based examination during an examination.
• Any desired chart can be projected during the course of
a program-based examination.
• Pressing the program up and down switches can back
up the program at any time. The program can be backed
up as many steps as necessary.
• The chart of the last step will be projected.
• The instrument will return to the first (step 1) chart in the
program-based examination.

18
Usage guide
Using charts for measuring binocular visual functions
Chart
Polarized R and G tes t Binocular balance test Worth four dot test Cross ring test
A, C, F type A, B, *F, *H C type
type A, C, F, H B type
type
Filter Polarizing filters Polarizing filters
Red filter for the right eye and
green filter for the left eye
Red filter for the right eye and
green filter for the left eye
Purpose Test of binocular refrac-
tion and accommoda-
tion balance
Test of the final binocular refrac-
tion balance Test of the function of binocular fusion Test of the presence and level of latent heteropho-
ria
Right
eye
Left
eye
The right eye is over cor-
rected and the left eye is
under corrected.
The left eye is over cor-
rected and the right eye
is under corrected.
The binocular refraction
and accommodation bal-
ance are achieved when
the two reds or two
greens are seen at the
same intensity.
There is a variance of degree
between the right eye and the left
eye.
Adjust the spherical power to
provide binocular balance.
*The Characters used in the F
and H types are not the same as
those shown above.
In the case where 4 dots are
seen, there will be normal fusion.
The white (bottom) color indi-
cates which eye can see better. If
red is seen mixed with green, the
right and left eyes function at the
same level.
If only two targets are seen, the
left eye is suppressed.
If only three green targets are
seen, the right eye is suppressed
If five targets are seen, it indi-
cates that the patient has diplo-
pia.
Indicates exophoria of 3
prisms.
Indicates esophoria of 2
prisms.
Indicates left eye hyper-
phoria of 1 prisms.
Indicates left hypopho-
ria of 0.5 prisms.
How the charts are viewed
How the charts are seen binocularly

19
Usage guide
Polarized crosshair test Reticle heterophobia
test with a fixation target
Coincidence test Coincidence test Stereo test
A, B, C, F, H type A, B, C, F, H type A, C, F type A, B, C, F, H type
A, F, H type
Polarizing filters Polarizing filters Polarizing filters Polarizing filters Polarizing filters
Test of the accommoda-
tion balance and hetero-
phobia
Heterephobia which can
not be examined by the
reticle testing is tested.
Test of aniseikonia and ver-
tical heterephobia which
can not be examined by
polarized crosshair test.
Test of aniseikonia and ver-
tical heterephobia which
can not be examined by
polarized crosshair test.
Test the presence of ste-
reoscopy.
Esophoria
Exophoria
Left eye hyperphoria
Left eye hypophoria
If either line is seen thin-
ner, the eye in question is
suppressed.
The right eye has an infix-
ation disparity.
Indicates that the right
eye has an infrafixation
disparity.
Indicates that the right
eye has an suprafixation
disparity.
Left eye hypophoria
If either is clearly visible,
there is observed sup-
pression with the periph-
ery of the retina in
question.
Aniseikonia of about 7%
(equivalent to two lines)
A single line indicates
about 3.5%.
Vertical heterophoria
If either line is seen thin-
ner, the eye in question is
suppressed.
Aniseikonia of about 7%
(equivalent to two lines)
A single line indicates
about 3.5%.
Vertical heterophoria
If either line is seen thin-
ner, the eye in question is
suppressed.
Two lines are seen in
fusion to form a single line
image and floated or sunk
against the central circle.
The binoculra parallaxes
is about 13 minutes and
the lower line is seen
floating about 1.1m (when
seen at a distance of 5m
with a PD of 64mm)
If the axis of the polarizing
filter is reversed at the
same time for both eyes
and seen sunk about
2.1m, it is normal.
If the images are slowly
fused, there is still cor-
rectable heterophoria.
Verify with another het-
erophoria test. If it takes
some time until the image
appears to float, the
patient may have an exo-
phoria.
If it takes some time until
the image sinks, the
patient may have an eso-
phoria.