Apologies if this has been covered. Unit must be __unpowered__ : Battery removed AND power supply turned off. Press & hold SYNC/ENTER, PLAY/PAUSE and DISP buttons together. Then connect power (turn on power supply or drop battery in and close cover). I haven't fully explored the Test mode on this unit but it appears to behave similarly to other Sharp units. Dave [EMAIL PROTECTED] ----------------------------------------------------------------- To stop getting this list send a message containing just the word "unsubscribe" to [EMAIL PROTECTED]