Dampen a soft cloth with acetone, which is available at paint and hardware stores.
Rub the cloth over the cracked area in a circular motion. Rub with gentle pressure just until the lacquer dissolves, which takes about 30 seconds.
Patch the wood with a wood repair crayon, or stain stick, if the finish faded during the lacquer removal. Rub the crayon over the exposed wood. Use a crayon that matches the color of your stain.
Apply a fresh coat of clear lacquer. Allow it to dry completely. Add a second coat if necessary. Allow the lacquer to dry for 24 hours.
Buff the entire piece of furniture with a wood wax. The wax provides a protective coating and helps blend the repaired area into the surrounding wood.