29
Troubleshooting
Problem Items to check Action
Power does not turn on
Is your guitar correctly connected to the
INPUT A/MONO jack?
Check the connection once again.
Could the batteries be low? Install fresh batteries.
Is the specied PSA-S series AC adaptor
connected correctly?
Check the connection once again.
No sound is output
Could the insert loop function be
assigned?
If the insert loop function is on, there will
be no sound unless the external eect
unit is correctly connected and its power
is on (p. 24).
Footswitch does not change sounds as
you expect
Is the SYSTEM: FSW MODE (p. 22) setting
correct?
The FSW MODE (p. 22) setting determines
what happens when you press the [A], [B],
and [TAP/CTL] switches. Check the setting.
Main Specications
BOSS MD-500: Modulation
Power Supply
Alkaline battery (AA, LR6) x 4
AC adaptor
Current Draw 225 mA
Battery Life for Continuous
Use
Alkaline batteries (AA, LR6): Approximately 4.5 hours
* This gure will vary depending on the actual conditions of use.
Dimensions
170 (W) x 138 (D) x 62 (H) mm
6-3/4 (W) x 5-7/16 (D) x 2-1/2 (H) inches
Weight (including batteries)
1.0 kg
2 lbs 4 oz
Accessories Owner’s manual, Leaet “USING THE UNIT SAFELY,” Alkaline Batteries (AA LR6) x 4
Options (sold separately)
AC adaptor: PSA-S series
Footswitch: FS-5U, FS-5L
Dual Footswitch: FS-6, FS-7
Expression pedal: FV-500H, FV-500L, EV-30, Roland EV-5
* 0 dBu = 0.775 Vrms
* This document explains the specications of the product at the time that the document was issued. For the latest information, refer to the
Roland website.
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