Roland ep-90/70 사용자 설명서
30
Troubleshooting
If you are encountering problems with the unit, please read
the section below before assuming that there is a
malfunction.
The piano cannot be switched on
No sound is produced
❍ Is the [Volume] knob set to the minimum position?
Demo songs do not play
Metronome does not sound
Buttons do not function
Keyboard sound does not change
Two sounds are produced when the keyboard
is played
is played
The pitch of the keyboard sounds incorrect
The pedals are not functioning, or function
intermittently
intermittently
Can’t Record
❍ Is Panel Lock on? (p. 22)
❍ Is the [Demo] button’s indicator lit?
❍ Is the [Demo] button’s indicator lit?
Press the [Demo] button; the button’s indicator goes out
(p. 11).
(p. 11).
❍ The metronome sound or count sound is not recorded.
The recorded performance has been deleted
❍ The performance data that you recorded will disappear
❍ If you record again after recording, the first-recorded
Bass notes sound wrong/buzzing or vibration
occurs
occurs
❍ If you can’t hear the problem in the headphones:
When playing at high volumes, resonance may occur in
the piano itself or in objects near the piano. At times,
other objects in the room, such as fluorescent lights or
glass doors, could start vibrating. Such phenomenon
becomes more prevalent when sounding the lower
frequencies at high volume. To minimize such unwanted
resonance, please observe the following:
the piano itself or in objects near the piano. At times,
other objects in the room, such as fluorescent lights or
glass doors, could start vibrating. Such phenomenon
becomes more prevalent when sounding the lower
frequencies at high volume. To minimize such unwanted
resonance, please observe the following:
- Locate the instrument so it is 10–15 cm away from
walls.
- Reduce the volume.
- Increase the distance from the object that is
- Increase the distance from the object that is
resonating.
❍ If you can hear the problem in the headphones:
The problem may be for a different reason. Please
contact your dealer.
contact your dealer.
In the upper range, the sound changes
abruptly beyond a certain key
abruptly beyond a certain key
❍ On an acoustic piano, notes in the upper one and a half
octaves of the keyboard continue to sound until they
decay naturally, regardless of the damper pedal. There is
a difference in the timbre as well. Roland pianos
faithfully simulate such characteristics of the acoustic
piano. On the ep-70/90, the range that is unaffected by
the damper pedal will change depending on the Key
Transpose setting.
decay naturally, regardless of the damper pedal. There is
a difference in the timbre as well. Roland pianos
faithfully simulate such characteristics of the acoustic
piano. On the ep-70/90, the range that is unaffected by
the damper pedal will change depending on the Key
Transpose setting.
<When the ep-90/70 is connected to
an external device>
an external device>
No sound is produced
❍ Is the power to all equipment turned on?
❍ Are the connections between ep-90/70 and the MIDI
❍ Are the connections between ep-90/70 and the MIDI
sequencer or the other external devices correct?
(p. 24, p. 25)
(p. 24, p. 25)
Strange sounds (or two sounds) are produced
when the ep-90/70 is played
when the ep-90/70 is played
❍ With the sequencer’s “Thru” function on, the same notes
may be sounded twice. Set the ep-90/70 to Local off
(p. 26).
(p. 26).
The volume level of the instrument connected
to Input jacks is too low
to Input jacks is too low
❍ Could you be using a connection cable that contains a
resistor?
Use a connection cable that does not contain a resistor.
Use a connection cable that does not contain a resistor.