Roland COSM, Руководство пользователя

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Model
13
Troubleshooting
The power doesn’t come on
●
Have the batteries run down?
Replace with fresh batteries.
* The batteries included with the PREAMP are only for confirming operation of the device.
●
Is the batteries’ polarity correct?
Confirm the batteries’ polarity as described in “Inserting the Batteries.”
●
Is the connection plug properly connected to the guitar’s endpin jack?
Check this connection as described in “Making the Connections.”
There is no sound
●
Is the connection plug properly connected to the guitar’s endpin jack?
Check this connection as described in “Making the Connections.”
●
Is the Volume knob turned down?
Gradually turn the VOLUME knob towards the center position to confirm the sound output.
Follow this by adjusting the sound as described in “Try Producing Some Sound.”
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Is the PREAMP in Tuner mode?
The PREAMP is set at the factory to mute the output sound while the tuner is in use. Either press the TUNER
button to return to the play screen or cancel the setting that mutes sounds while the tuner is operational.
Sound is distorted
●
Could the VOLUME knob be turned up too high?
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Could the BODY knob be turned up too high?
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Could the EQ settings be turned up too high?
Adjust the settings as described in “Try Producing Some Sound.”
Specifications
PREAMP: COSM Acoustic Preamp
Input Impedance................... 10 M
Ω
Nominal Output Level......... -20 dBu
Output Impedance ............... 1 k
Ω
Controls.................................. BODY knob, VOLUME knob, EFFECT button, ANTI-F.BACK button,
LIGHT button, VARIATION button, TUNER button,
EQ/EDIT button (CENTER, UP, DOWN, LEFT, RIGHT)
Connector............................... Output jack (serves also as endpin)
Power Supply........................ DC 3 V: Dry battery LR6/R6 (AA) type x 2
Current Draw ........................ 80 mA (DC 3 V) *
When the backlight is off.
115 mA (DC 3 V) * When the backlight is on.
* Expected battery life under continuous use:
Carbon: 7 hours, Alkaline: 24 hours
These figures will vary depending on the actual conditions of use.
Option .................................... Owner’s Manual, Dry battery R6 (AA) type (carbon) x 2
* The life of the included batteries may be limited, however, since their primary purpose was to enable testing.
We recommend that alkaline batteries be used when replacing the batteries.
* 0 dBu = 0.775 Vrms
* In the interest of product improvement, the specifications and/or appearance of this unit are subject to change without
prior notice.
PREAMP