Nidec Auto Ref/Keratometer ARK 500-A

Warning: Do not use a blower to remove powdery paper. It may cause malfunction.

Open the printer cover and remove the printer paper roll.

Apply the nozzle of a vacuum cleaner to the auto cutter to remove powdery paper.

Supply the printer paper as it was.

Sign off on the printer cleaning

Warning: Use a thin stick which does not damage glass lenses.

Check for dirt on the measuring window

If dirt is present, proceed with the following steps

Blow off dust on the measuring window with a blower

Wrap lens cleaning paper around a thin stick and wipe the lens of the measuring window with a material moistened with alcohol

Wipe off the glass of the mire ring around the measuring window using a gauze dampened with alcohol

Check if the window is cleaned using a penlight

If the window is not clean, repeat the cleaning process

Is the 61. WINDOW CHECK parameter set to YES or DAY?

Warning: This procedure requires trained personnel!

Removed the two fixing pins and chinrest paper?

Removed the cap from the spherical model eye and placed it on the chinrest?

Checked the lens surface of the model eye for soiling?

Aligned the level of the spherical model eye with the eye level marker?

Set the 1. STEP parameter to 0.01 D?

Performed AR and KM measurements?

If the measured result is higher than the value indicated on the model eye, contact NIDEK or your authorized distributor.

Disconnect the two fixing pins from the chinrest

Number of chinrest papers removed from the pack

Ensure the stack of chinrest paper is 6mm or less in thickness

Pass the fixing pins through both holes of the stack of paper

Insert the pins into the holes in the chinrest while holding both fixing pins and stack of paper

Push the pins into the holes of the chinrest

Sign off on the chinrest paper fixing

Warning: Do not run the printer when printer paper is not loaded. It may ruin the printer head.

Warning: Do not pull the paper in the printer forcefully. This may cause malfunction of the printer.

Press the cover open button to open the printer cover.

Remove the used printer paper. CAUTION! Do not touch the printer head at the top of the opened printer cover.

Insert new printer paper. Load printer paper as shown in the picture on the right. Set printer paper so that its end is exposed from the cover. NOTE: If the roll is loaded in such a way that paper becomes upside down, it is not possible to print data out. Be sure that printer paper is not loaded in a tilted position or the core of the roll is properly placed. Printer paper may not be fed properly.

Push the printer cover toward the main body. Press the printer cover at both ends to close the cover securely. NOTE! Be sure that the cover is securely closed.

Sign off on the printer paper replacement