Technical Reference; Troubleshooting - Radio Shack LK-1261 Owner's Manual

Technical Reference

Troubleshooting

Be sure to check the following table whenever you experience problems with keyboard operation.
Symptom
• No sound when keyboard keys
are pressed.
• Any of the following symptoms
while using battery power.
• Dim power indicator.
• 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 play.
• Loss of power, sound distortion, or low volume when playing from a connected computer or MIDI
device.
• Abnormally low microphone volume.
• Distortion of microphone input.
• Dim power supply indicator when a microphone is used.
• Key light stays on.
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LK-1261_e_32-35.p65
Cause
1. Power supply problem.
2. Volume setting is too low.
3. Headphones are plugged into
the keyboard.
4. The POWER/MODE selector is
in the CONCERT CHORD or
FINGERED position.
5. Tone "99 PERCUSSION" is
selected and you are pressing
keys that are not assigned tones.
6. LOCAL CONTROL is off.
• Low battery power
• Keyboard is waiting for play of
the correct note during Step 1
or Step 2 play.
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Action
1. C o r r e c t l y a t t a c h t h e A C
a d a p t o r , m a k e s u r e t h a t
batteries (+/–) are facing
correctly, and check to make
sure that batteries are not dead.
2. Use the MAIN VOL slider to
increase volume.
3. Unplug the headphones from
the PHONES/OUTPUT jack.
4. Normal play is not possible on
the accompaniment keyboard
while the POWER/MODE
selector is set to CONCERT
C H O R D o r F I N G E R E D .
Change the POWER/MODE
selector setting to NORMAL.
5. While "99 PERCUSSION" is
selected, you can use only keys
that are marked on the console
with illustrations of percussion
instruments.
6. Turn on LOCAL CONTROL.
• Replace the batteries with a set
of new ones or use the AC
adaptor.
1. Press the lit key to continue with
Step 1 or Step 2 play.
2. Press the START/STOP button
to quit Step 1 or Step 2 play.
04.6.15, 3:45 PM
Adobe PageMaker 6.5J/PPC
See Page
Page E-12
Page E-15
Page E-14
Page E-18
Page E-16
Page E-31
Page E-12
Pages
E-26, 27
Pages
E-26, 27
648U-E-034A