Troubleshooting; What Is Midi - Roland f-20 Owner's Manual

Troubleshooting

Problem Cause/Action
Excessive current flow occurred at the USB MEMORY port.
All LEDs other than
the [ ] (POWER)
Check whether there might be a problem with the USB flash drive. Next,
button are blinking
turn the power off, then back on again.
The speakers
produce sound
Could the headphones be connected to the OUTPUT jack instead of the
even though
PHONES jack (p. 4)?
headphones are
connected
This unit uses a hammer action keyboard in order to simulate an acoustic
Even though you're piano's playing touch as realistically as possible. For this reason, you'll hear
using headphones
the hammers thump when you play the keyboard, just as you would when
and the sound is playing an acoustic piano. Since this unit allows you to adjust its volume,
muted, a thumping
you might notice the sound of the hammers in certain situations, but this
sound is heard does not indicate a malfunction. If vibration transmitted to the floor or
when you play the
walls is a concern, you may be able to minimize the vibration by moving
keyboard the piano away from the wall, or by laying down a commercially available
anti-vibration mat designed for use with pianos.
When 30 minutes have elapsed since you last played or operated this unit,
the power will turn off automatically (This is the factory setting).
Power turns off on
its own
If you don't need the power to turn off automatically, turn the "Auto Off"
setting "OFF" (p. 5).
Power does not
Is the AC adaptor connected correctly (p. 4)?
turn on
Is the pedal connected correctly?
Pedal does not
work, or is "stuck"
Plug the cord firmly into the PEDAL jack (p. 4).
Could the unit's volume be turned down?
No sound/
Could headphones be connected?
No sound when you
play back a song The speakers will not produce sound if headphones is connected to the
PHONES jack (p. 4).
Could you have made Transpose settings (p. 7)?
Is the Master Tune setting appropriate (p. 7)?
Pitch of the
keyboard or song is
The notes of a piano are tuned using a unique method (stretched tuning),
incorrect
which makes upper-range notes slightly higher in pitch, and lower-range
notes slightly lower in pitch. For this reason, you might perceive the pitch
as being incorrect, but this is the way an acoustic piano should sound.
Sounds are heard
twice (doubled)
Could you have selected a dual tone (p. 2)?
when the keyboard
is played
On an acoustic piano, the approximately one and a half octaves of notes
at the upper end of the keyboard will continue sounding regardless of the
The sound of
damper pedal. These notes also have a somewhat different tonal character.
the higher notes
suddenly changes
This unit faithfully simulate this characteristic of acoustic pianos. On
from a certain key
this unit, the range that is unaffected by the damper pedal will change
according to the transpose setting.
If you hear this in headphones:
Piano sounds that have a brilliant and crisp character contain substantial
high-frequency components that may sound as though a metallic ringing
has been added. This is because the characteristics of an actual piano are
being faithfully reproduced, and is not a malfunction.
High-pitched
This ringing is more obtrusive if the reverb effect is applied heavily, so you
ringing is heard
may be able to minimize it by decreasing the reverb.
If you don't hear this in headphones:
It is likely that there is some other reason (such as resonances within the
unit). Please contact your dealer or the nearest Roland service center.
The volume will be reduced if you connect a USB device to the USB
Volume is reduced
MEMORY port. This does not indicate a malfunction.
What is MIDI Visual Control?
MIDI Visual Control is an internationally-used recommended practice that was added to the MIDI specification so that visual expression could be linked with
musical performance. Video equipment that is compatible with MIDI Visual Control can be connected to electronic musical instruments via MIDI in order to control
video equipment in tandem with a performance.
What is V-LINK?
V-LINK is Roland's proprietary specification that allows visual expression to be linked with musical performance. Video equipment that is compatible
with V-LINK can be connected to electronic musical instruments via MIDI, making it easy to enjoy a variety of visual effects that are linked with the
performance.

What is MIDI?

MIDI, short for "Musical Instrument Digital Interface, " was developed as a universal standard for the exchange of performance data among electronic musical instruments and computers.
This unit is equipped with USB COMPUTER port to let it exchange performance data with external devices. These connectors can be used to connect the unit to an external device for
even greater versatility.
Problem Cause/Action
If you set the volume to the maximum setting, the sound may be distorted
depending on how you perform. If this occurs, turn down the volume.
If you don't hear this in headphones:
Performing at high volumes may cause the speakers or objects near
the unit to resonate. Fluorescent lights or glass doors may also resonate
sympathetically. In particular, this is more likely to occur for lower notes
and higher volumes. You can take the following measures to minimize
Sound wrong, or
resonances.
are buzzy
• Locate this unit 30 cm (12 inch) away from walls or other surfaces.
• Keep the volume down.
• Move away from the objects that are resonating.
If you hear this in headphones:
It is likely that there is some other reason. Please contact your dealer or a
nearby Roland service center.
In some cases, playing back extremely high-volume SMF or WAV data from
a USB flash drive may cause the protection circuit to operate, turning the
Power turns off
power off.
If this occurs, reduce the volume.
When Using the Wireless LAN Function
Problem Cause/Action
• Make sure that your wireless LAN access point supports WPS.
If your wireless LAN access point does not support WPS, you can connect
using the procedure described in "Connecting in Ad-Hoc mode" (p. 8).
• The 802.11a/b wireless standard is not supported. Please use the
802.11g/n (2.4 GHz) wireless standard.
• The WEP authentication method is not supported. Please use the WPA or
WPA2 authentication method.
Can't connect to a
• Make sure that DHCP is enabled for your wireless LAN access point.
wireless LAN access
• The connection might not occur successfully due to the state of the
point
radio signal. If so, use the procedure described in "Basic Connection
Method (Connect by WPS)" (p. 8), and reconnect your wireless LAN access
point.
• There is a limit to the connection data that can be remembered. Making
a new connection may cause older connection data to be deleted.
All connection data will be deleted if you execute a factory reset. If the
connection data has been deleted, please re-connect to the wireless
LAN access point.
Communication may be unstable depending on the usage of the radio
frequency spectrum.
If communication is unstable, the response may be sluggish, or if using
Communication is audio communication, there may be dropouts in the audio.
unstable
The following actions may improve the situation.
• Move the wireless LAN access point and the F-20 closer to each other.
• Change the channel setting of the wireless LAN access point.
• Is the F-20 turned on?
• Is the wireless USB adapter (WNA1100-RL) inserted to the F-20?
The F-20 is not • Is the F-20 connected to the wireless LAN?
found in the instru-
• Are the F-20 and the iPhone connected to the same network (the same
ment connections
wireless LAN access point)?
of the iOS app (such
• Is the wireless LAN access point set to allow communication between
as "Air Performer")
wireless LAN devices?
For details on settings, refer to the owner's manual of your wireless LAN
access point.
9