Essilor WAM700 User manual

www.essilor-instruments.com
Maintenance manual

CONTENTS
I. INTRODUCTION 7
1. Scope of this manual 8
2. Maintenance 8
II. SAFETY 9
1. Electricity 10
III. SYSTEM DESCRIPTION 11
1. Cameras 12
2. Optical path 12
3. LED's 15
4. Electrical parts 20
a. Electrical cards 20
b. Electrical wiring/cables 22
5. Mechanical parts 24
IV. SYSTEM INSTALLATION 25
1. Site requirement 26
2. Unpacking the unit 26
3. Electrical connection 26
4. Printer 26
5. Turning the unit "On" and "Off" 26
V. PART REMOVAL AND REPLACEMENT 27
1. Plastic cover replacement 28
a. Head covers 28
b. Top chassis cover 31
c. Side covers 32
d. Screen covers 32
e. Head rest and chinrest cover 33
f. Optical head removal 34
2. Electronic parts replacement 35
a. Mother board replacement 35
b. HD replacement 35
c. Memory bar replacement 35
d. VXW card replacement 36
e. 800 card replacement 37
f. Power supply replacement 38
g. Screen replacement 38
3. Mechanical parts replacement 39
a. Issolus mount replacement 39
b. Coupling replacement 39
c. Opto switch cable replacement 40
d. X motor or lead screw replacement 42
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e. Y, Z, and chinrest motor replacement 43
f. SH motor replacement 44
4. Optical part replacement 44
a. Pachy camera replacement 44
b. Visu camera, sensor camera, and laser replacement 44
c. Tonometer assy replacement 45
VI. ADJUSTMENTS, CALIBRATIONS AND MAINTENANCE 47
1. HD Replacement 48
a. Backup 48
b. Restore the WAM700 image 49
2. Setting up the jig 54
a. Position parameters for plastic jig 56
b. Position parameters for metal jig 57
3. VXW card - Light calibration 58
a. Topo led calibration 59
b. Focus led calibration 60
c. DF led 61
d. Retro led calibration 62
4. Limit switch positions 63
a. X limit switches 63
b. Y limit switches 63
c. Z limit switches 64
5. Fogging calibration 65
a. Explanation of fogging 65
b. Fogging calibration 66
6. 800 Card burning, stepper and DC motor burning 67
a. Stepper burning 67
b. Burning the 800 card and DC motor 67
7. AR,K and topography test and calibration 67
a. ARK test 67
b. Topo test 68
c. Topo calibration 1st stage 69
d. Topo calibration 2nd stage 70
e. K calibration 71
8. Visu camera replacement 71
9. Pachy camera calibration 72
10. Tono calibration 76
a. Tono camera position calibration 76
b. Force fire adjustment on the tono head 83
c. Tono pressure calibration 86
11. Optical head replacement 88
12. Touch screen calibration 89
13. Mother board Bios and jumper settings 90
14. Tests after repairs 90
a. Reliability test 90
b. Test tono pressure 93
c. Pachy test 94
d. Retro light test 95
e. ARK and topography test 95
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f. Measurement 96
15. Restore to factory settings 96
16. Recommended preventive actions 96
VII. TROUBLESHOOTING 97
1. OS problems: MB, CPU, RAM or Bios problems 98
2. Camera detection problems: green camera image 98
3. Tonometry related problem 100
a. Camera problem 100
b. No puffing 101
c. No measurement 101
d. No automatic measurement 101
4. Pachymetry measurement problem 102
5. Retro measurement problem 103
6. Display and touch screen related problems 103
7. Poor fogging 104
8. Motor related problem 105
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I. INTRODUCTION

1. SCOPE OF THIS MANUAL
This manual provides maintenance and service instructions for the WAM700 device, safety regulations and
descriptions of the device are included in this manual.
While this manual is intended to aid service personnel in the care of the appliance, it does not replace the
need for training provided by Essilor.
2. MAINTENANCE
All maintenance services must be performed by authorized service personnel. Any unauthorized changes to
software, hardware, or firmware will result in nullifying the warranty. Additionally, all parts must be
purchased via Essilor or any other subsidiary of Essilor.
Every day, before starting the first measurement of the day, make sure the tonometer camera lens and the
pachy camera mirror shown in the image below are clean; dirty lenses can impair measurements. When
cleaning the device, do so with a dry cloth only. Do not use water or any sprays to clean the lenses or any
other part of the device. However, in the event that the mirror is fogged (see "foggy pachy mirror" figure),
which usually happens in the winter, use the antifogging drops provided. Put a small drop on a dry cloth, and
clean the mirror.
Clean pachy mirror Foggy pachy mirror Antifogging solution
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II. SAFETY

The manufacturer provides sufficient information to ensure patient safety, avoid system malfunctions, and
prevent incorrect readings.
The manufacturer declines all responsibility for injury to patients or damage to equipment due to ignorance
of its safety instructions or in the event that they are not followed.
The safety information appears in the form of warnings and alert messages.
•Do not modify the equipment in any way.
•Repairs and maintenance must be carried out only by qualified service personnel.
•Operators and patients should keep hands and body clear from moving parts on the device.
•This is a Class 1 laser product with an embedded Class 3R laser.
1. ELECTRICITY
•To avoid risk of electric shock or bodily injury, do not handle the electrical plugs with wet
hands.
•To avoid risk of electric shock or fire, make sure the WAM700's power cord is not damaged
before plugging it into an electrical outlet.
•To avoid risk of electric shock, the power cord should be fully inserted in an outlet equipped
with a protective ground connection.
•When connecting external devices such as a screen or printer, ensure that the device conforms
to IEC 60950-1:2005 Information Technology Equipment - Safety.
•When switching off the WAM700, wait at least 5 seconds before switching it on again.
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III. SYSTEM DESCRIPTION

1. CAMERAS
Included in this device are four cameras, a visualization camera, Scheimpflug (pachy) camera, Shack
Hartmann, and a tonometer camera, which can be seen in figures "light's path from the target to the eye"
and "tono camera". There are different lenses placed in various locations that guide the light beams to the
cameras and enable us to obtain the information we are seeking.
2. OPTICAL PATH
Below are images which depict how the light travels from different sources and reaches the cameras. The
light sources include light from the eye, the laser beam, the blue pachy led, and the target (the hot air
balloon). In the beginning of any measurement, the target image is on, and the light goes to the patient's
eye, as can be seen in figure "light's path from the target to the eye".
The visu camera sees the eye and locates itself to center the eye, as is seen in figure "light's path from the
eye to the visu camera".
In the wavefront measurement, the laser turns on. This light beam is directed to the eye, and that light is
then reflected to the sensor (SH) camera (figure "light's path from the laser to the eye to the sensor
camera"). During a pachy measurement, the pachy/blue led turns on. This light beam is directed to the eye,
which is then reflected to the pachy camera.
Light's path from the target to the eye
1. Visu
2. Pachy led
3. Laser
4. Target
5. Sensor
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Light's path from the eye to the visu camera
1. Visu
2. Pachy led
3. Laser
4. Target
5. Sensor
Light's path from the laser to the eye to the sensor camera
1. Visu
2. Pachy led
3. Laser
4. Target
5. Sensor
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Light's path from the laser to the pachy led to the eye
1. Visu
2. Pachy led
3. Laser
4. Target
5. Sensor
The tonometer and pachymeter camera can be seen at a different angle than the one presented above.
Light's path during pachy measurement
1. Pachy led
2. Pachy camera
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Tono camera
1. Tono camera
3. LED'S
Many Led's are involved in the measurement process, to illuminate the eye and for the measurement itself.
Upon pressing measurement, the target, located within the optical head, automatically turns on. During the
wavefront measurement the clarity of the image changes, from blurry to clear to blurry. During other
measurements, the clarity stays the same.
Leds in the optical head
1. Target led
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Dark fields illuminate the eye for the visu camera, and are located on the outside of the machine on both the
right and left side.
1. Dark fields
2. Dark fields
3. Topo rings
Then the focus led turns on for the visu camera to focus at the center of the eye. The focus leds are located
behind the topo rings shown in the figure above.
lacido Led card with topo led and focus led
1. Topo led
2. Topo led
3. Topo led
4. Focus led
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During the wavefront measurement, after the focus, but before the actual measurement, the retro lights turn
on.
1. Visu
2. Retro and slit illumination
Then, the laser turns on, and the light is reflected from the eye to the sensor (SH) camera. Afterwards, the
target moves backwards and forwards to change the sharpness of the image the patient sees.
1. Pachy led
2. Laser
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During the topography measurement, after focusing, the white led's in the placido led card in figure "Placido
led card with topo led and focus led" turn on. The patient sees red rings light up, as shown below.
During the pachy measurement, after focusing, the blue pachy led turns on to scan the cornea. In newer
versions, the pachy scans from left to right and up and down to get a better scan of the cornea.
1. Pachy led
2. Laser
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During the tonometer measurement, the head goes down, such that the tono eye is in front of the patient's
eye. Then the tono led's turn on to illuminate the eye for the camera.
1. Tono led
There is also a measurement led, for the tono, in the tono assembly, to capture the image.
1. Measurement led
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4. ELECTRICAL PARTS
a. Electrical cards
Attached to the optical head are two electrical cards, the VXW, and the 800 card. The 800 card has all the
motors and their respective optoswitches connected to it. The 800 card is connected to the VXW which has
the tonometer camera connected to it, along with the apparatuses concerned with illumination, such as the
laser. The VXW connects to the motherboard via a USB board to which the other cameras are connected to
as well.
1. 800 card
2. V w card
Under the optical bench, is the chassis. The tono pump, motherboard, hard drive, power supply, fans and
more are in the chassis. When wanting to make replacements of any of these parts, the optical bench must
be removed to have access to the chassis.
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1. Pump
2. HD
3. Tonometer release valve
4. Regulator
5. USB hub
6. Wifi
7. RAM
8. MB
9. Fan
10. CPU
11. Power supply
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b. Electrical wiring/cables
Below are diagrams of the cable connections in the chassis and the optical head.
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