Roland GP-100 Owner's Manual page 73

Troubleshooting
Ifthere is no sound or other operational problems occur, first check
through the following solutions. If this does not resolve the
problem, then contact your dealer or a nearby Roland service
station.
No Sound / Volume Too Low
- Are the connection cables broken?
Try using a different set of connection cables.
- ls the GP-100 correctly connected to the other devices?
Check connections with the other devices. (p. 7)
- 15 the connected amp/mixer turned off, or the volume lowered?
Check the settings of your amp/mixer system.
- Is the INPUT Level knob lowered?
Adjust the INPUT Level knob to an appropriate position. (p.9)
- Is the OUTPUT Level knob lowered?
Adjustthe OUTPUT Level knobto an appropriate position.(p.9)
- Is Effect turned off?
If the EFFECT Off operation has been set to "MUTE," setting
EFFECT Off will mean that the direct sound is not output
either.(p.28)
- Are the OUTPUT Channels set correctly?
Sound will be output only to the OUTPUT Jacks which are
assigned to the OUTPUT Channels. (p. 21)
- Are the preamp settings at minimum?
Check the preamp settings. You may also use the "Meter
function" (р. 24).
- ls each effect set correctly?
Use the "Meter function" (p. 24) to check the output level of
each effect. If there is an effect for which the meter does not
move, check the settings for that effect. (p. 19)
- Is "Master Level" specified as a control assign Target?
Move the controller to which it is assigned.
Sound Is Distorted
(the clip indicator lights frequently)
- Have you adjusted the input level knob?
Adjust the INPUT Level knob to an appropriate setting. (p. 9)
- Are the nominal INPUT and OUTPUT Levels set appropriately?
Set the nominal INPUT and OUTPUT Levels to "+4 dBm."
- Are the levels of connected devices excessively high?
Adjust the output levels of connected devices to an appropriate
setting.
Section 5 Appendix
Patch Number Does Not Change
- Is something other than the Play page (р. 9) shown in the display?
On the GP-100, Patches can be selected only when the Play
page is displayed. Press the [EXIT] button to return to the Play
page.
PedalConnectedto CONTRL 1/2 Jack Doesn't
Change Patches
- ls something other than the Play page (p. 9) shown in the display?
On the GP-100, Patches can be selected only when the Play
page is displayed. Press the [EXIT] button to return to the Play
page.
- Has the Patch number select range been set appropriately?
Check the "Number Up/Down" range. (p. 28)
- Has the function of the CONTROL 1/2 Jack been set correctly?
Set the function ofthe CONTROL 1/2 Jack to either "Number
Up" or "Number Down." (p. 28)
Parameters Specified with Control Assign
Can't Be Controlled
- When using an expression pedal
Make sure that the function of the EFFECT REMOTE / EXP Jack
is set to "EXP PEDAL." (p. 28)
- When a foot switch is connected to the CONTROL 1/2 Jack
Make sure that the function of the jack to which the foot switch
is assigned is set to "Assignable." (p. 28)
- When using MIDI to control parameters
Make sure that the MIDI channels of both devices match.
(p. 53)
Make sure that the control numbers you are using match.
(р. 21)
MIDI Messages Are Not Received
- Are the MIDI cables broken?
Try another set of MIDI cables.
- Is the GP-100 correctly connected to the other MIDI device?
Check connections with the other MIDI device.
- Do the MIDI channel settings of both devices match?
Make sure that the MIDI channels of both devices match.
(p. 53)
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