77
7.Cleaning and Protection
Attention: Do not use any corrosive detergent to clean the device, so as not to damage the
device surface.
7.1 Clean the forehead baseplate
Clean the forehead baseplate before every optical test.
1
）
Take off the forehead baseplate
Tilt the forehead baseplate forward as shown in right figure: drag in a certain direction and take off
the baseplate.
2
）
Clean the forehead baseplate
Wipe the forehead baseplate with clean and soft cloth. For intractable stains, please dip the clean
soft cloth in mild detergent to scrub the stains away and then wipe it with dry soft cloth.
3
）
Restore the forehead baseplate to original position
Insert it into the device in a certain direction
7.2 Clean the nose baseplate
Clean the nose baseplate before every optical test.
1
）
Take off the nose baseplate from the vision tester host.
The nose baseplate is fixed on the vision tester host with magnetic steel, so it can be easily taken
off.
2
）
Clean the nose baseplate.
Wipe the nose baseplate with clean and soft cloth. For intractable stains, please dip the clean soft
cloth in mild detergent to scrub the stains away and then wipe it with dry soft cloth.
3
）
Restore the nose baseplate to original position
7.3 Clean the testing window
If there are dirt, oil stain, finger print or dust on the testing window, it may affect the testing
accuracy.
1
）
For the dust: blow it away with blowing balloon with brush.
2
）
For dirt, oil stain and finger print: wipe it with clean and soft cloth.
Summary of Contents for YPA-2100
Page 1: ...YPA 2100 DIGITAL REFRACTOR User Manual Version 1 0 Date 20180521...
Page 5: ...13 Electrical Schematic Diagram 82 14 Electromagnetic Compatibility 83...
Page 24: ...19 Press to enlarge PD press to reduce PD 3 Press to exit PD input interface...
Page 31: ...26 key...
Page 42: ...37 4 Click key shift to 0 5XC 5 Click the key again shift to automatic mode Slit Prism...
Page 55: ...50 34 Press to finish the test...
Page 78: ...73 3 Click key to popup input box...