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General| Brand | Nidek Medical |
|---|---|
| Model | ARK-700 Series |
| Category | Measuring Instruments |
| Language | English |
Guides through diagnostic steps and items to verify for troubleshooting.
Covers no display or abnormal display on the TV monitor.
Addresses various "Err" codes including sensor, chart, rotator, and memory failures.
Specific to AR-600 models with S/N earlier than 10121.
TV monitor does not light up or display a raster.
No eye image displayed on the TV monitor.
Displayed characters or target square are unclear or absent.
Inability to switch between manual and auto-tracking modes.
Difficulty placing the instrument into the objective measurement mode.
Inability to modify instrument parameter settings.
Difficulty changing the measurement mode.
Covers smooth plane movement and vertical movement issues.
The measuring unit is unstable during operation.
Alignment light (AR-600) or Mire Ring (ARK-700) does not appear.
The displayed model eye image is not clear.
The auto-refraction measurement process does not initiate.
Error messages appearing during auto-refraction measurements.
The obtained Spherical (SPH) value is shifted from the expected reading.
The obtained Cylindrical (CYL) value is too high.
A short beep is not heard when pressing the Start button.
The Intraocular Lens (IOL) mode cannot be activated.
Inability to change the Cylinder mode.
The instrument cannot correctly identify the patient's left and right eyes.
Difficulty placing the instrument in Pupillary Distance (PD) mode.
The obtained Pupillary Distance (PD) value is abnormal.
Error message appears during Keratometry (KM) measurement.
The obtained Keratometry (KM) value is abnormal.
The up-and-down movement of the Chin rest is not smooth.
The chart is not visible through the measuring window.
"Err" message doesn't appear even if the patient blinks during measurement.
The auto-tracking function is not operational.
The auto-shot function is not operational.
Instrument cannot be placed in the Visual Acuity (VA) TEST mode.
Inability to change the Visual Acuity (VA) charts.
Chart is out of focus during subjective measurement or visual acuity check.
Interface communication error message appears.
The printer unit is not functioning.
Printer output is faint or missing text.
The Eyeprint function cannot be activated.
The TV auto-OFF function is not working.
Shutter fails to close, specific to early AR-600 models.
Procedure for cleaning optical components used for calibration.
Instructions for cleaning the instrument's measuring window.
Steps for performing measurements using model eyes.
Specifies acceptable error tolerances for AR measurements.
Procedure for performing measurements using steel balls.
Specifies acceptable error tolerances for KM measurements.
Detailed steps for removing the main external covers.
Procedure for accessing the rear section of the measuring unit.
Steps to remove the internal cover.
Procedure for removing the rear panel of the instrument.
Instructions for detaching the TV monitor assembly.
Steps to remove the base plate of the instrument.
Verifying the input voltage at the AC power inlet.
Measuring output voltages from the internal transformer.
Verifying output voltages from the power supply board (PC7).
Measuring the voltage supplied by the backup battery.
Verifying voltages across specific diodes (D1, D2) on the PC6 board.
Verifying continuity of the START switch.
Verifying continuity of switches located on the PC2 board.
Verifying continuity of switches on the PC3 board for specific models.
Verifying continuity of switches on the PC12 board for specific models.
Verifying the function of the origin sensor for the chart carriage.
Verifying the origin sensor for Left/Right movement (except AR-600/ARK-700).
Verifying the origin sensor for the rotator mechanism.
Checking the status and continuity of AR measurement LEDs and their cables.
Measuring the voltage supplied to the illumination LED.
Measuring the voltage supplied to the chart lamp.
Measuring the voltage supplied to the alignment light LED.
Measuring the voltage supplied to the PD LED.
Measuring FOCUS LED voltage for specific models.
Measuring AKM LED voltage for AR-700 series models.
Measuring AKM LED voltage for models other than AR-600.
Procedure for replacing the main control board.
Procedure for replacing the display control board.
Procedure for replacing the PC3 board (INC.DEC SW) (except AR-600).
Procedure for replacing the PC6 adjustment board.
Procedure for replacing the PC7 power supply board.
Procedure for replacing the printer board and the printer unit.
Procedure for replacing the PC10 MIRE board (ARK-700 series).
Procedure for replacing the PC12 CHART SELECT SW board.
Procedure for replacing the PC22 TRACKING board.
Procedure for replacing the PC23 PD CCD board.
Procedure for replacing the PC24 PD LED board.
Procedure for replacing the internal transformer.
Procedure for replacing the joystick control unit.
Instructions for cleaning or replacing the slide plate.
Procedure for replacing LEDs and cleaning the IR filter.
Procedure for replacing LEDs and cleaning the G29 component.
Procedure for replacing the front cover assembly.
Procedure for replacing the FOCUS LED.
Procedure for replacing the shutter mechanism.
Procedure for replacing the LED connection cable.
Procedure for replacing the chart illumination lamp.
Procedure for replacing the chart carry origin sensor.
Procedure for replacing the rotator unit origin sensor.
Procedure for replacing Up/Down limit switches.
Procedure for replacing limit sensors for left/right movement.
Procedure for replacing the Up/Down motor.
Procedure for replacing the Right/Left motor.
Procedure for replacing the TV monitor assembly.
Procedure for replacing the CCD camera unit.
Procedure for replacing the chart display unit.
Procedure for replacing the CYL unit (AR-660A/ARK-760A only).
Procedure for replacing the internal battery.
Procedure for replacing the main measuring unit assembly.
Procedure to adjust bearing pressure for up-and-down shaft stability.
Procedure to reduce play in the sway stopper unit.
Procedure to adjust the vertical movement of the chin rest.
Procedure to calibrate focus by adjusting the CCD camera lens.
Steps to align and position the target for calibration.
Calibrating sensors by adjusting VR1 and VR2 on the PC6 board.
Procedure for automatic calibration of Keratometry measurements.
Procedure for setting or verifying EEPROM data.
Procedure for setting the sensor offset values.
Procedure for adjusting the print density settings.
Procedure for adjusting the target offset values.
Procedure for adjusting the target gain values.
Procedure for adjusting the Pupillary Distance (PD) gain.
Procedure for setting the mask blink level parameter.
Procedure for adjusting the horizontal position of the display.
Procedure for adjusting the vertical position of the display.
Procedure for adjusting the Corneal Size scale.
Procedure for setting CYL zero and axis values.
Procedure to adjust the image centering using H.V. volume.
Procedure to adjust display brightness and sharpness.
Procedure for automatic calibration of the tracking function.
Accessing and using the Auto-Refraction adjustment modes.
Accessing and using other adjustment modes (not for AR-600).
Details on the functions of DIP Switch 1.
Details on the functions of Rotary Switch 2.
Basic principles of Auto-Refraction measurement.
Detailed explanation of the AR measurement optical system.
Basic principles of Keratometry measurement.
Illustrative drawing showing the construction of the AR-600.
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