Nidek Medical AR-360A User manual

AUTO REFRACTOMETER,AUTO REF/KERATOMETER
Model AR-360A,AR-330A,
AR-310A, ARK-560A
ARK-530A, ARK-510A
SERVICE MANUAL
November 2010
Pages in total: 172
XAR17ARDA001E/E

NIDEK CO., LTD. : 34-14, Maehama, Hiroishi-cho, Gamagori, Aichi 443-0038, Japan
(Manufacturer) Telephone: [phone]
Facsimile: (81-533) 67-6610
NIDEK CO., LTD : 3F Sumitomo Fudosan Hongo Bldg., 3-22-5, Hongo,
(Tokyo Office) Bunkyo-Ku, Tokyo 113-0033, Japan
Telephone: [phone]
Facsimile: (81-3) 5844-2642
NIDEK INCORPORATED : 47651 Westinghouse Drive, Fremont, California 94539, U. S. A.
(United States Agent) Telephone: [phone]
Facsimile: [phone]
NIDEK SOCIETE ANONYME : Europarc 13, rue Auguste Perret, 94042 CRETEIL, France
(EU Authorized Representative) Telephone: [phone]
Facsimile: (01) 49 80 32 08

Table of Contents
§1 INTRODUCTION..............................................................................1-1
§2 SAFETY PRECAUTIONS ................................................................2-1
§3 TROUBLESHOOTING.....................................................................3-1
§4 SUBTROUBLESHOOTING .............................................................4-1
4.1 Screen is not Turned On.......................................................................................... 4-1
4.2 Arrow does not Disappear. ...................................................................................... 4-2
4.3 Charge Indicator does not Disappear...................................................................... 4-2
4.4 Horizontal Movement of Main Unit is not Sluggish.................................................. 4-3
4.5 Main Unit cannot Move Horizontally. ....................................................................... 4-3
4.6 Eye Indication of R (right)/L (left) cannot be Toggled. ............................................. 4-4
4.7 Measuring Unit cannot be Moved Up or Down by Rotating Joystick. ..................... 4-5
4.8 Measuring Unit Stops with a Jerk at Top or Bottom Position................................... 4-5
4.9 Measuring Unit Rattles. ........................................................................................... 4-6
4.10 Chinrest does not Move Smoothly......................................................................... 4-6
4.11 Fixation Lamp cannot be Seen through Air Nozzle. .............................................. 4-6
4.12 Air is not Puffed Out by Pressing Start Button....................................................... 4-7
4.13 Operating Noise of Piston is Abnormal.................................................................. 4-8
4.14 Alignment Spot does not Appear. .......................................................................... 4-8
4.15 AL2 LED for Forward/Backward Movement does not Light Up............................. 4-8
4.16 LEDs for Eyelid Detection and Illumination do not Light Up.................................. 4-9
4.17 Alignment is not Performed Automatically in F.AUTO Mode. ................................ 4-9
4.17.1 Right/left alignment is not performed (“Err X” appears). ............................. 4-9
4.17.2 Up/down alignment is not performed. ........................................................ 4-10
4.17.3 Forward/backward alignment is not performed (“Err Z” appears).............. 4-10
4.18 OPEN THE EYE WIDERAppears........................................................................4-11
4.19 NO SEARCHING Appears....................................................................................4-11
4.20 Measurement does not Start even when Alignment and Focusing are Complete.4-12
4.21 Error Messages Appear. ...................................................................................... 4-13
4.21.1 Error “BLK” often appears.......................................................................... 4-13
4.21.2 Error “ALM” often appears. ........................................................................ 4-13
4.21.3 Error “APL” often appears.......................................................................... 4-14
4.21.4 Error “PCE” often appears. ........................................................................ 4-15
4.21.5 Error “OVR” often appears......................................................................... 4-15
4.21.6 Error “PRS” often appears. ........................................................................ 4-16
4.22 Low Confidence Data (Data with ALM or APL) are often Obtained..................... 4-16
4.23 Measured Data is Abnormal. ............................................................................... 4-16
4.24 PRINT ERRORAppears on Screen and Printing cannot be Performed. ............ 4-17

4.25 Print is Blurred. .................................................................................................... 4-18
4.26 Measured Data cannot be Transferred................................................................ 4-19
4.27 Monitor Auto Off Function does not Operate....................................................... 4-19
4.28 PRESSURE ERROR Appears in Test Mode. ...................................................... 4-20
4.29 Voltage Supply Line of LED Power Supply.......................................................... 4-21
4.30 Voltage Supply Line of Power Supply.................................................................. 4-22
§5 CLEANING LENSES ETC. ..............................................................5-1
5.1 Observation Window ............................................................................................... 5-1
5.2 Inner Window........................................................................................................... 5-1
5.3 Air nozzle ................................................................................................................. 5-1
§6 REMOVING PROCEDURES ...........................................................6-1
6.1 Right and Left Covers.............................................................................................. 6-1
6.2 Front Cover.............................................................................................................. 6-1
6.3 Covers ..................................................................................................................... 6-1
6.4 Rear Cover .............................................................................................................. 6-2
6.5 Monitor Panel .......................................................................................................... 6-2
6.6 Bottom Plate ............................................................................................................ 6-2
§7 REPLACEMENT PROCEDURES....................................................7-1
7.1 Main Board .............................................................................................................. 7-1
7.2 Driver Board............................................................................................................. 7-2
7.3 LED Board and PLS Board...................................................................................... 7-3
7.4 SW Board ................................................................................................................ 7-4
7.5 UDPOS Board ......................................................................................................... 7-4
7.6 POS Board............................................................................................................... 7-4
7.7 Printer Board ........................................................................................................... 7-5
7.8 Transformer ............................................................................................................. 7-6
7.9 Joystick.................................................................................................................... 7-6
7.10 Up/Down Movement Motor Unit ............................................................................ 7-7
7.11 LCD Unit ................................................................................................................ 7-7
7.12 Cleaning and Replacing Slide Plate ...................................................................... 7-8
7.13 Measuring Unit ...................................................................................................... 7-8
7.14 Pressure Sensor.................................................................................................... 7-9
7.15 Up/Down Movement Bearing................................................................................. 7-9
7.16 Replacing Rod End and Cleaning Piston and Cylinder....................................... 7-10
7.16.1 Checking tightness of spherical inside ring................................................ 7-10
7.16.2 Replacing rod end...................................................................................... 7-10
7.16.3 Cleaning piston and cylinder...................................................................... 7-10
7.17 CCD Camera ........................................................................................................7-11
7.18 Safe Switch (EA25) ..............................................................................................7-11
7.19 Motor for Right/Left Movement ............................................................................ 7-12
7.20 Motor for Forward/Backward Movement ............................................................. 7-12
7.21 Rack..................................................................................................................... 7-12
7.22 Pinion................................................................................................................... 7-13
7.23 FIX LED ............................................................................................................... 7-13
7.24 R Switch............................................................................................................... 7-14

7.25 Front Stopper Switch ........................................................................................... 7-14
7.26 P.S. Board............................................................................................................ 7-15
7.27 BA05 Replacement Unit for EMC ........................................................................ 7-17
7.28 Fixing Knob.......................................................................................................... 7-19
§8 ADJUSTMENT.................................................................................8-1
8.1 Setting Time and Date ............................................................................................. 8-1
8.2 Adjusting Camera Position ...................................................................................... 8-1
8.3 Adjusting Video Signal Level ................................................................................... 8-2
8.4 Adjusting Camera Focus ......................................................................................... 8-2
8.5 Adjusting Focus and Position of Optical Reticle...................................................... 8-3
8.6 Adjusting AL2 LED Optical Axis ............................................................................... 8-4
8.7 Adjusting Optical Axis of Applanation Detector........................................................ 8-5
8.8 Electric Adjustment .................................................................................................. 8-6
8.8.1 Adjusting AL2 LED offset voltage................................................................... 8-6
8.8.2 Adjusting comparison voltage ........................................................................ 8-6
8.8.3 Adjusting AL1 LED light amount..................................................................... 8-7
8.9 Adjusting Reference Marker Position ...................................................................... 8-8
8.10 Adjusting PSD Balance.......................................................................................... 8-9
8.11 Adjusting Fixation Lamp Position......................................................................... 8-10
8.12 Adjusting Pressure of Puffed Out Air ....................................................................8-11
8.13 Adjusting Solenoid Brake..................................................................................... 8-12
8.14 Adjusting Front Cover LED Light ......................................................................... 8-13
8.15 Adjusting Applanation Detector ........................................................................... 8-14
8.16 Adjusting Camera Position (Second time)........................................................... 8-15
8.17 Adjusting Reference Marker Position (Second time)........................................... 8-15
8.18 Electric Adjustment (Second time) ...................................................................... 8-15
8.19 Adjusting PSD Balance (Second time) ............................................................... 8-15
8.20 Checking AL2 LED Adjustment............................................................................ 8-16
8.21 Adjusting Electronic Reticle Position ................................................................... 8-17
8.22 Checking OPEN THE EYE WIDER ..................................................................... 8-18
8.23 Checking Successive Air Puffing ......................................................................... 8-18
8.24 Adjusting Three-Point Tightening of Up/Down Movement Bearing ..................... 8-19
8.25 Adjusting Up/Down Movement of Measuring Unit ............................................... 8-20
8.25.1 Tighteness of nut holder............................................................................. 8-20
8.25.2 Feed screw holder for up/down movement................................................ 8-20
8.26 Adjusting Chinrest Up/Down Movement.............................................................. 8-21
8.27 Adjusting Pulse Wave .......................................................................................... 8-21
8.28 Adjusting A Constant and B Constant.................................................................. 8-22
8.29 Checking Measuring Unit Position ...................................................................... 8-23
8.30 Measuring Model Eye.......................................................................................... 8-24
8.30.1 Electric model eye...................................................................................... 8-24
8.30.2 Silicone model eye..................................................................................... 8-24
§9 SUPPLEMENT.................................................................................9-1
9.1 Wiring Diagram........................................................................................................ 9-1
9.2 Error Message ......................................................................................................... 9-2
9.3 External View........................................................................................................... 9-3

9.4 Labels ...................................................................................................................... 9-4
9.5 Tools and Consumables List.................................................................................... 9-5

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XAR17ARDA001E/E
• This service manual is for the NIDEK AUTO REFRACTOMETER and AUTO REF/
KERATOMETER models: AR-360A, AR-330A, AR-310A, ARK-560A, ARK-530A and ARK-
510A.
• For correct service, thorough understanding of the contents of this manual is required prior to
the service.
• Refer to the operator’s manual and parts list for the AR-360A, AR-330A, AR-310A, ARK-
560A, ARK-530A and ARK-510A.
• Refer to the Service Manual Annex for important changes.
• In case the device cannot be repaired according to the procedures described in this manual,
please report the serial number of the device and details of the symptom or symptoms.
§1 INTRODUCTION

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<General precautions>
• Servicing should be performed by NIDEK service persons or other qualified personnel.
• Perform all servicing according to the procedures described in this manual.
Failure to do so may cause unexpected accident or malfunction.
• When performing maintenance work, turn off the power switch and disconnect the power
cord from the wall outlet unless the power needs to be on.
• Never wipe the covers by using an organic solvent such as paint thinner. Doing so may ruin
the surface and damage the appearance of the device.
• Invisible laser (class 3B laser) is used. (* This device is classified to a Class 1 laser product
and does not emit laser harmful to eyes.)
<Maintenance precautions>
• Never look at the laser beam (invisible laser: class 3B) from the phototransmitter ASSY.
directly or touch it.
• In case of system malfunction, check the symptom and turn the power switch off.
• Never drop parts or screws inside the system, nor bump it against surrounding objects.
• Prepare storage cases so as not to lose the removed screw or parts.
• Screw or unscrew the screws with proper tools.
• After loosening the screws fastened by a threadlocking adhesive, be sure to reapply the
threadlocking adhesive to the screws when retightening them.
• After replacing parts, make sure that they are fixed securely before turning on the power .
• Should you observe strange odors or smoke being issued from the system, immediately turn
off the power switch, disconnect the power cord from the outlet, and investigate the cause.
If the system is powered in abnormal conditions, fire, electric shock, or total loss of the
system may result.
• See “8.1 Wiring Diagram” and “8.2 Connector Cable” for checking cable breaks described in
TROUBLESHOOTING. In addition, check cables for the following:
(1) Connectors are connected and crimped securely.
(2) No contact failure occurs after re-connection of connectors.
(3) Cables are soldered properly.
Do not yank the cables with excessive force. Doing so could cause cable breakage.
Do not perform servicing with wet hands. Doing so could cause electric shock or malfunction.
<Adjustment precautions>
• Perform adjustment on a vibration-free, level, and stable surface.
A slanted floor or place subject to vibration will obstruct accurate adjustment.
• Do not use adjustment jigs for puropses other than those intended.
§2 SAFETY PRECAUTIONS

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XAR17ARDA001E/E
Plug the power cord and turn on the power switch.
Does the startup screen appear?
Does an error appear?
4.1 Startup Screen does not Appear.
4.2 An Error Appears.
Yes
No
No
Yes
Can the main body move horizontally?
Does the measuring unit move up and down by
turning the joystick?
Does the chinrest move up and down smoothly?
4.4 Horizontal Movement of Main Body is Sluggish.
4.5 Measuring Unit does not Move Up or Down by
Turning Joystick.
4.6 Chinrest does not Move.
Yes
Yes
Yes
No
No
No
Can measurement be performed properly? 4.7 Measurement cannot be Performed Properly.
Yes
Ｎｏ
Can the function buttons be operated? 4.3 Function Buttons cannot be Operated.
Yes
No
Can communication be performed properly? 4.8 Communication cannot be Performed Properly.
Yes
No
Can printout be performed? 4.9 Printout cannot be Performed.
Yes
No
§3 TROUBLESHOOTING

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XAR17ARDA001E/E
Does LCD auto light off function operate? 4.10 LCD Auto Light Off Function does not Operate.
Yes
No
Turn off the power switch.

4 - 1
XAR17ARDA001E/E
4.1 Startup Screen does not Appear.
Is the voltage of TP on the tracking board (30601-
BA02) as below?
Between TP6 and TP1: DC +3.3 V
Between TP5 and TP1: DC +5 V
Between TP4 and TP1: DC +12 V
Between TP3 and TP1: DC +15V
Are there any breaks in cable BA01-BA03 (30601-
EA13) (see 8.1 and 8.2)?
Does the backlight of the color LCD (30601-E005)
light up (see 8.1 and 8.2)?
Are there any breaks in the flexible flat cable (30601-
E021) (see 8.1 and 8.2)?
Replace the tracking board (30601-BA02)
(see 6.1.2).
Replace cable BA01-BA03 (30601-EA13) (see 8.1
and 8.2).
4.1.2 Backlight of color LCD does not light up.
Replace the flexible flat cable (30601-E021) (see 8.1
and 8.2).
No
Yes
No
No
No
Yes
Yes
Replace the color LCD (30601-E055) (see 6.15).
Yes
Is the power supply voltage proper? 4.1.1 Check power supply voltage.
Yes
No
Replace the LCD board (30601-BA06) (see 6.1.5).
Is the problem resolved?
Completion
Yes
No
Are there any breaks in the flexible flat cable (30601-
E022) (see 8.1 and 8.2)?
No
Replace the flexible flat cable (30601-E022) (see 8.1
and 8.2).
Yes
§4 SUBTROUBLESHOOTING

4 - 2
XAR17ARDA001E/E
Replace the primary supply part (30601-EA01)
(see 8.1 and 8.2).
Is the voltage between the P001 1st and 3rd pins
on the primary supply part (30601-EA01) the
same as the input voltage (see 8.1 and 8.2)?
Are there any breaks in the power supply output
cable (30601-EA51) (see 8.1 and 8.2)? Replace the power supply output cable (30601- EA51) (see 8.1 and 8.2) .
No
Yes
Completion
Are the voltages between the J51 4th and 1st, 5th
and 2nd, and 6th and 3rd pins on the switching
regulator (80602-00102) DC +15 V (see 8.1 and
8.2)?
Yes
Is the power supply voltage proper? Set a voltage stabilizer.
Yes
No
Yes
No
Replace the switching regulator (80602-00102)
(see 6.9).
No
Are there any breaks in the cable base (30601-
EA52) (see 8.1 and 8.2)? Replace the cable base (30601-EA52) (see 8.1 and 8.2).
No
Yes
Are there any breaks in the cable BA02 power
supply (30601-EA11) (see 8.1 and 8.2)? Replace the cable BA02 power supply (30601- EA11) (see 8.1 and 8.2).
No
Yes
4.1.1 Checking power supply voltage

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XAR17ARDA001E/E
Replace the flexible flat cable (30601-E022) (see
8.1 and 8.2).
Are there any breaks in the flexible flat cable
(30601-E022) (see 8.1 and 8.2)?
Are there any breaks in the cable FL inverter
(30601-EA63) (see 8.1 and 8.2)?
Replace the DC-AC inverter (18535-E010) (see
6.1.11).
Is the problem resolved?
Completion
Replace the cable FL inverter (30601-EA63) (see
8.1 and 8.2).
Yes
Yes
No
Replace the color LCD (30601-E005) (see 6.15).
No
Are there any breaks in cable BA01-BA03 (30601-
EA13) (see 8.1 and 8.2)?
Are the voltages between the A27 and A28, and
B27 and B28 pins of P103 (J3) on the main board
(30601-BA01) DC +12 V (see 8.1 and 8.2)?
Yes
No
Replace the main board (30601-BA01) (see
6.1.1).
Replace cable BA01-BA03 (30601-EA13) (see 8.1
and 8.2).
No
Yes
No
Yes
4.1.2 Backlight of color LCD does not turn up.

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XAR17ARDA001E/E
4.2 Error Message Appears.
4.2.2 ERR002 appears.Does ERR002 (clock error) appear? Yes
No
4.2.4 ERR011 appears.
Does ERR011 (time-out error (OUT) in characters)
appear? Yes
No
4.2.5 ERR012 appears.Does ERR012 (receiving time-out (OUT)) appear? Yes
No
4.2.6 ERR013 appaers.Does ERR013 (receiving error (OUT)) appear? Yes
No
4.2.7 ERR014 appears.Does ERR014 (received code error (OUT)) appear? Yes
No
4.2.8 ERR015 appears.Does ERR015 (reply time-out (OUT)) appear? Yes
No
4.2.1 ERR001 appears.Does ERR001 (EEPROM error) appear? Yes
No
4.2.3 PD ERROR appears.Does PD ERROR appear? Yes
No
4.2.9 ERR016 appears.Does ERR016 (DTR-DSR error (OUT)) appear? Yes
No
4.2.10 ERR017 appears.Does ERR017 (data error (OUT)) appear? Yes
No
4.2.11 ERR018 appears.Does ERR018 (command error (OUT)) appear? Yes
No

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XAR17ARDA001E/E
4.2.12 NO DAT appears.Does NO DAT (data empty (OUT)) appear? Yes
No
4.2.14 ERR022 appears.Does ERR022 (receiving time-out (IN)) appear? Yes
No
4.2.15 ERR023 appears.Does ERR023 (receiving error (IN)) appear? Yes
No
4.2.16 ERR024 appears.Does ERR024 (received code error (IN)) appear? Yes
No
4.2.17 ERR025 appears.Does ERR025 (reply time-out (IN)) appear? Yes
No
4.2.18 ERR026 appears.Does ERR026 (DTR-DSR error (IN)) appear? Yes
No
4.2.19 ERR027 appears.Does ERR027 (data error (IN)) appear? Yes
No
4.2.13 ERR021 appears.
Does ERR021 (time-out error in characters (IN))
appear? Yes
No
4.2.20 ERR028 appears.Does ERR028 (command error (IN)) appear? Yes
No
4.2.21 ERR031 appears.Does ERR031 (tracking up/down error) appear? Yes
No

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XAR17ARDA001E/E
4.2.23 ERR033 appears.
Does ERR033 (tracking forward/backward error)
appear? Yes
No
4.2.24 ERR034 appears.Does ERR034 (chinrest up/down error) appear? Yes
No
4.2.25 NO PAPER appears.Does NO PAPER appear? Yes
No
4.2.26 ERR043 appears.Does ERR043 (printer connection error) appear? Yes
No
4.2.29 ERR112 appears.Does ERR112 (AR motor error) appear? Yes
No
4.2.27 ERR101 appears.Does ERR101 (sensor initialization error) appear? Yes
No
4.2.28 ERR111 appears.Does ERR111 (thermistor error) appear? Yes
No
4.2.30 ERR501 appears.
Does ERR501 (Eye Care card power supply error)
appear? Yes
No
4.2.31 ERR502 appears.Does ERR502 (Eye Care card writing error) appear? Yes
No
4.2.22 ERR032 appears.Does ERR032 (tracking right/left error) appear? Yes
No

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XAR17ARDA001E/E
4.2.33 ERR601 appears.Does ERR601 (USB_A recognition error) appear? Yes
No
4.2.34 ERR602 appears.Does ERR602 (USB_A class error) appear? Yes
No
Does ERR121 (CYL1 initialization error) appear?
4.2.32 ERR503 appears.
Does ERR503 (Eye Care card power supply error)
appear? Yes
No
4.2.35 ERR121 appears.
Yes
No
Does ERR122 (CYL2 initialization error) appear? 4.2.36 ERR122 appears.
Yes
No
Does ERR123 (chart initialization error) appear? 4.2.37 ERR123 appears.
Yes
No
Completion

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XAR17ARDA001E/E
4.2.1 ERR001 appears.
Rewrite the EEPROM data of the driver board
(30601-BA03) (see 7.13).
Is the problem resolved?
Replace the driver board (30601-BA03) (see 6.1.3).
Completion
No
Yes
Does an error appear in 17. EEPROM ERROR DISP
of the MENU mode (see 7.1.7)?
No
Perform adjustment and calibration accordingly for
the error.
Yes
4.2.2 ERR002 appears.
Adjust the time and date (see 7.12).
Turn off the power switch in 30 minutes, and turn it
on again.
Does ERR002 appear?
Replace the main board (30601-BA01) (see 6.1.1).
Completion
Yes
No