Read Sharp XL-55 (serv.man18) Service Manual online
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."
Gently clean the lens with a lens cleaning tissue and a small amount of isopropyl alcohol.
Do not touch the lens with the bare hand.
cleaning disc designed for CD optical pickup lenses.
1. 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
3. You will hear music for about 20 seconds and the CD player will automatically stop. If it continues to turn, press the stop
All rights reserved. Unauthorized duplicating, broadcasting and renting this product is prohibited by law.
PARTS CODE: UDSKA0004AFZZ
Turn the power off and reset the CD TEST MODE (STEP 1).
Is "PU ERROR " not displayed?
18 (/RST) of IC801.
ON condition ?
Check the main unit power supply circuit.
MODE changes from "STEP 4" to "STEP 3"?
Check the between CNW803/CNS803 and PU-IN switch.
selected play by the FF/REW key.
OPERATING FAILURE ".
Does the unit initialize properly and start playback when PLAY
key is pressed?
CNW803/CNS803. Check the between CNW803/
CNS803 and PICKUP-IN switch.
when the disc is set? (See Fig.37-1)
and pin 40 of IC801 ?
optical pickup is faulty.
between pin 7 of IC804
and pin 60 (CD STB) of
(MUTE) of IC804 ?
24 and 25 of IC804. If OK. IC804 is faulty.
CNS801 ? (as shown above)
TEST MODE "STEP 3" is changed to " STEP 4" ?
If OK. IC801 is faulty.
and 10 of IC804. If OK. IC804 is faulty.