Casio LK35 manual Technical Reference, Troubleshooting

Technical Reference

■Troubleshooting

Be sure to check the following table whenever you experience problems with key- board operation.

Symptom		Cause		Action
• No sound when keyboard	1.	Power supply problem.	1.	Correctly attach the AC
keys are pressed.				adaptor, make sure that bat-
				teries poles (+/–) are facing
				correctly, and check to make
				sure that batteries are not
				dead.
	2.	Volume is set to 0.	2.	Press the VOLUME but-
				ton.
	3.	Headphones are plugged	3.	Unplug the headphones
		into the keyboard.		from the PHONES/OUT-
				PUT jack.
	4.	The POWER/MODE selec-	4.	Normal play is not possible
		tor is in the CASIO CHORD		on the accompaniment key-
		or FINGERED position.		board while the POWER/
				MODE selector is set to
				CASIO CHORD or FIN-
				G E R E D . C h a n g e t h e
				POWER/MODE selector
				setting to NORMAL.
	5.	Tone “99 PERCUSSION” is	5.	While “99 PERCUSSION” is
		selected and you are press-		selected, you can use only
		ing keys that are not as-		keys to the left of B￿4. These
		signed tones.		keys are marked on the con-
				sole with illustrations of per-
				cussion instruments.
• Any of the following symp-	• Low battery power		• Replace the batteries with a
toms while using battery				set of new ones or use the
power.				AC adaptor.

•Dim power supply indica- tor

•Instrument does not turn on

•Dim, difficult to read dis- play

•Abnormally low speaker/ headphone volume

•Distortion of sound output

•Occasional interruption of sound when playing at high volumes

•Sudden power failure when playing at high volumes

•Dimming of the display when playing at high vol- ume

•Abnormal rhythm pattern and demo tune play

•Dimming of keyboard lights when notes sound

E-36 475A-E-038A

LK35_E_36-39.p65 Page 36 03.7.4, 11:41 AM Adobe PageMaker 6.5J/PPC