Casio LK-120 User Manual

Also see for LK-120: User guide Service Manual & Parts Guide User guide User guide

Casio LK-120 User Manual Manual pdf 28 page image

E-26Technical ReferenceTroubleshootingBe sure to check the following table whenever you experience problems with keyboard operation.CauseSymptom Action• No sound when keyboard keysare pressed.• Any of the following symptomswhile using battery power.• Key light stays on.• RHYTHM button does notwork.1. Power supply problem.2. Volume setting is too low.3. Headphones are plugged intothe keyboard.4. The POWER/MODE selector isin the CASIO CHORD orFINGERED position.5. Tone “99 PERCUSSION” isselected and you are pressingkeys that are not assigned tones.• Low battery power• Keyboard is waiting for play ofthe correct note during Step 1or Step 2 play.• Keyboard is in the Song BankMode.1. Correctly attach the ACadaptor, make sure thatbatteries (+/–) are facingcorrectly, and check to makesure that batteries are not dead.2. Use the VOLUME slider toincrease volume.3. Unplug the headphones fromthe PHONES/OUTPUT jack.4. Normal play is not possible onthe accompaniment keyboardwhile the POWER/MODEselector is set to CASIOCHORD or FINGERED.Change the POWER/MODEselector setting to NORMAL.5. While “99 PERCUSSION” isselected, you can use only keysthat are marked on the consolewith illustrations of percussioninstruments.• Replace the batteries with a setof new ones or use the ACadaptor.1. Press the lit key to continue withStep 1 or Step 2 play.2. Press the START/STOP buttonto quit Step 1 or Step 2 play.• Press the SONG BANK buttonto return to the normal mode.See PagePage E-11Page E-14Page E-13Page E-17Page E-14Page E-11PagesE-23, 24PagesE-23, 24Page E-20• Instrument does not turn on• Display that is flickering, dim, or difficult to read• Abnormally low speaker/headphone volume• Distortion of sound output• Occasional interruption of sound when playing at high volume• Sudden power failure when playing at high volume• Flickering or dimming of the display when playing at high volume• Continued sound output even after you release a key• A tone that is totally different from the one that is selected• Abnormal rhythm pattern and Song Bank play