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Error Messages
If an error occurs during operation, one of the following error message numbers will appear in
the display. Stop operation of the device and follow the proper solution described below.
E 1
: MIDI Receive Buffer Full
CAUSE:
SOLUTION: Try reducing the amount of data being sent or, break the data into smaller blocks.
E 2
: Communication Error.
CAUSE:
SOLUTION: Check all connections, etc. and try again.
E 3
: Bulk Receive Check Sum Error.
CAUSE:
SOLUTION: Check all connections and data, and try again.
E 4
: Bulk Receive Data Abnormality.
CAUSE:
SOLUTION: Check all connections and data, and try again.
E 5
: Backup Battery Error.
CAUSE:
SOLUTION: Continued use of the device will result in the loss of data. Return the device to the
Trouble Shooting
No Sound
→ Is the power adaptor properly connected?
→ Is the volume level of the instrument connected
to the INPUT jack turned up?
→ Are the EFFECT LEVEL knob and the DIRECT
LEVEL knob values set to "0"?
→ Is the OUTPUT LEVEL knob value set to "0"?
→ If an EXP. Pedal is being used to control the
volume, try stepping on the pedal.
No Effect
→ Is the LEVEL knob value set to "0"?
→ Is the EFFECT LEVEL knob value set to "0"?
→ Is the TIME setting's value set to "0"?
→ Is the BYPASS mode switched ON with the
BANK Footswitch (the BANK Footswitch lamp
lights)?
→ Is the effect switched OFF with the Footswitch
(1, 2, 3) (the lights for the Footswitches are
off)?
28
Too much MIDI data is being received at one time.
An abnormality is detected during MIDI communications.
The check sum does not match the received MIDI bulk data.
An abnormality is detected in the received MIDI bulk data.
Backup battery power is depleted.
music dealer where you purchased it or, the nearest Yamaha Service center and
have the battery replaced.
→ If an EXP. Pedal is being used to control the
volume, try stepping on the pedal.
Turning the Knobs Does Not Change the
Sound
→ First, rotate the knob until the value in the dis-
play changes and then set. (→ page 13)
→ Is an Effect Band selected? After selecting an
Effect Band with one of the [EFFECT BAND 1-
8] buttons, rotate the knob to set. (→ page 13)
Can Not Transmit MIDI
→ Is the MIDI channel matched with MIDI chan-
nel on the receiving device? (→ page 25)
→ Is the MIDI Merge set to "OFF"? (→ page 25)
Can Not Receive MIDI
→ Is the UD-Stomp in the Play Mode? Return to
the Play Mode and try receiving again.
→ Is the UD-Stomp's MIDI channel set to "OFF"?
(→ page 25)
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