SD-NX10 (serv.man10). Part 7 - Voltage table, Waveforms, Troubleshooting tables, IC tables - Sharp Audio Service Manual (repair manual). Page 6

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When the CD section does not operate when the objective lens of the optical pickup is dirty, this section may not operate. Clean
the objective lens, and check the playback operation. When this section does not operate even after the above step is taken, check
the following items.
Remove the cabinet and follow the troubleshooting instructions.
"Track skipping and/or no TOC (Table Of Contents) may be caused by build up of dust other foreign matter on the laser pickup
lens. Before attempting any adjustment make certain that the lens is clean. If not, clean it as mentioned below."

Turn off the power, and wipe the lens softly using a cleaning paper moistened with commercially available cleaning solution so
as not to damage it.
Be careful not to touch the lens with bare hands.

Dust gradually accumulates on the objective lens during use, and it may degrade performance.  To avoid this problem, use a
cleaning disc designed for CD optical pickup lenses.

Parts code

1.

CD optical pickup Lens cleaner disc

UDSKA0004AFZZ

HOW TO USE

CAUTION

Cleaning Fluid

Cleaner disc

Using the brush in the cleaner cap, apply 1 or 2 drops of the cleaning fluid to the 

brush on the CD cleaner disc which has the mark next to it.

Place the CD cleaner disc onto the CD disc tray with the brush side down, then 

press the play button.

You will hear music for about 20 seconds and the CD player will automatically stop. 

If it continuous to turn, press the stop button.

1.

2.

3.

The CD lens cleaner should be effective for 30-50 operations, however if the 

brushes become worn out earlier then please the cleaner disc.

If the CD cleaner brushes become very wet then wipe off any excess fluid with a soft 

cloth.

Do not drink the cleaner fluid or allow it to come in contact with the eyes. In the 

event of this happening then drink and / or rinse with clean water and seek medical 

advice.

The CD cleaner disc must not be used on car CD players or on computer CD-ROM 

drives.

All rights reserved. Unauthorised duplicating, broadcasting and renting this product 

is prohibited by law.